Entity information:
NOTE
8
—INCOME TAXES
 
 
The Company files income tax returns in the U.S. federal and various state and local jurisdictions and foreign jurisdictions. For financial statement reporting purposes, income (loss) before provision for income taxes inclu
de the following (in thousands):
 
   
Year Ended December 31,
 
   
2017
   
2016
   
2015
 
U.S.
  $
11,203
    $
2,207
    $
(4,588
)
International
   
757
     
513
     
360
 
Income (loss) before income taxes
  $
11,960
    $
2,720
    $
(4,228
)
 
 
The federal and statement income tax provision (benefit) is summarized as follows (in thousands):
 
   
Year Ended December 31,
 
   
2017
   
2016
   
2015
 
Current:
                       
Federal
  $
148
    $
    $
(7
)
State
   
71
     
16
     
23
 
International
   
511
     
131
     
218
 
Total Current
   
730
     
147
     
234
 
Deferred:
                       
Federal
   
(17,393
)
   
(24
)
   
33
 
State
   
(1,348
)
   
(2
)
   
 
International
   
(22
)
   
22
     
(55
)
Total deferred
tax benefit
   
(18,763
)
   
(4
)
   
(22
)
Total tax expense
(benefit)
  $
(18,033
)
  $
143
    $
212
 
 
Deferred income taxes reflect the net tax effects of (a) temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes, an
d (b) operating losses and tax credit carryforwards.
 
The
tax effects of significant items comprising the Company’s deferred taxes after 
December 31, 2017 and 2016 
are as follows (in thousands):
 
   
December 31,
 
   
2017
   
2016
 
Deferred Tax Assets:
           
Net
operating loss carryforwards
  $
8,604
    $
15,487
 
Stock-based compensation
   
1,179
     
1,486
 
Other accruals and reserves
   
1,663
     
2,160
 
Credits
   
11,781
     
9,006
 
Foreign
   
399
     
377
 
Accrued warranty
   
847
     
890
 
Depreciation and amortization
   
1,592
     
2,627
 
Other
   
303
     
95
 
Deferred tax asset before valuation allowance
   
26,368
     
32,128
 
Valuation allowance    
(7,242
)    
(31,751
)
Deferred tax asset after valuation allowance
   
19,126
     
377
 
Deferred tax liability on goodwill
   
(71
)    
(85
)
Net d
eferred tax asset
  $
19,055
    $
292
 
 
Net operating losses and tax credit carryforwards as of
December 31, 2017 were 
as follows
(in thousands):
 
   
Amount
   
Expiration Years
 
Net operating losses, federal
  $
34,700
     
2029-2035
 
Net operating losses, state
   
20,773
   
 
Various
 
Tax credits, federal
   
6,109
     
2024-2036
 
Tax credits, state
  $
6,872
   
 
Various
 
 
The
effective tax rate of the Company’s provision (benefit) for income taxes differs from the federal statutory rate as follows:
 
   
Year Ended December 31,
 
   
2017
   
2016
   
2015
 
Statutory rate
   
34.00
%
   
34.00
%
   
34.00
%
State tax
   
(5.59
)
   
(14.56
)
   
1.94
 
General Business Credits
   
(2.72
)
   
(9.25
)
   
15.92
 
Stock-based compensation
   
(21.55
)
   
14.36
     
(19.19
)
Foreign Rate Differential
   
(0.50
)    
(0.16
)
   
(1.47
)
Change in Federal Tax Rate
   
60.98
     
 
   
 
Other
*
   
0.65
     
(2.15
)    
(1.35
)
Meals and Entertainment*
   
2.15
     
7.56
     
(3.23
)
Valuation allowance
   
(218.17
)
   
(24.57
)
   
(31.63
)
Effective tax rate
   
(150.75
)
%
   
5.23
%
   
(5.01
)%
 
*
Other balance in
2016
and
2015
was reclassified for consistency with current year.
 
The Company assesses the
ability to realize its net deferred tax assets by evaluating all available evidence, both positive and negative, including (
1
) cumulative results of operations in recent years, (
2
) sources of recent income (loss), (
3
) estimates of future taxable income and (
4
) the length of net operating loss and tax credit carryforward periods. Such assessment is required on a jurisdiction-by-jurisdiction basis. In making such assessment, significant weight is given to evidence that can be objectively verified.
 
As of
December 31,
2017
and
2016,
the Company
’s deferred tax assets were primarily comprised of U.S. Net Operating Loss (“NOL”), tax credit and other deferred tax assets relating to book-to-tax temporary differences. From the
third
quarter of
2009,
the Company had determined that it was more likely than
not
that all of the net deferred tax assets in the U.S. jurisdictions would
not
be realized. As a result, the Company had recorded and maintained a full valuation allowance against those net deferred tax assets to reduce them to their estimated net realizable value through
September 30, 2017
.
 
As of
December 31, 2017,
the Com
pany determined that it is more likely than
not
that a portion of the net deferred tax assets will be realized for federal and U.S. states, except California, and therefore recorded a net valuation allowance release of
$26.3
million. As a result, the Company continued to maintain a full valuation allowance against the net deferred tax assets relating to the states of California and for the R&D credit carry forwards for the state of Massachusetts.
 
As of each reporting date, the Company
’s management considers new evidence, both positive and negative, that could impact management’s view with regard to future realization of deferred tax assets. As of
December 31, 2017,
in part because in the current year, the Company achieved
three
years of cumulative pre-tax income in the U.S. federal tax jurisdiction, management determined that sufficient positive evidence exists as of
December 31, 2017,
to conclude that it is more likely than
not
that deferred taxes of
$26.3
 million are realizable, and therefore, reduced the valuation allowance accordingly.
 
At
December 31, 2017,
the Company had approximately
$34.7
million and
$20.8
million of federal and state net operating loss carryforwards, respectively, available to offset future taxable income. The federal and state net operat
ing loss carryforwards, if
not
utilized will generally begin to expire in
2029
through
2035.
At December
31,
2017,
the Company had research and development tax credits available to offset federal, California and Massachusetts tax liabilities in the amount of
$6.1
million, 
$6.6
 million and 
$0.3
million, respectively. Federal credits will begin to expire in
2024,
 California state tax credits have
no
expiration, and Massachusetts tax credits begin to expire in
2021.
 
The utilization of NOL carryforwards and tax credits
may
be subject to a substantial annual limitation due to the ownership change limitations set forth in Internal Revenue Code Sections
382
and
383
and similar state provisions. Such annual limitation could result in the expiration of net operating loss and tax credit carryforwards before utilization.
 
Uncertain Tax Positions
 
The Company establishes reserves fo
r uncertain tax positions based on the largest amount that is more-likely-than-
not
to be sustained. An uncertain income tax position will
not
be recognized if it has less than a
50%
likelihood of being sustained. The Company performs a
two
-step approach to recognizing and measuring uncertain tax positions
. The
first
step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than
not
that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The
second
step is to measure the tax benefit as the largest amount that is more than
50%
likely of being realized upon settlement. Although the Company believes it has adequately reserved for its uncertain tax positions,
no
assurance can be given that the final tax outcome of these matters will
not
be different. The Company adjusts these reserves in light of changing facts and circumstances, such as the closing of a tax audit or the refinement of an estimate. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will impact the provision for income taxes in the period in which such determination is made. The provision for income taxes includes the impact of reserve provisions and changes to reserves that are considered appropriate, as well as the related net interest and penalties.
 
The Company files U.S., state, and foreign income tax returns in jurisdictions with varying statutes of limitat
ions. The
2005
through
2017
tax years generally remain subject to examination by U.S. federal and California state tax authorities due to the Company’s net operating loss and credit carryforwards. For significant foreign jurisdictions, the
2011
through
2017
tax years generally remain subject to examination by their respective tax authorities.
 
The following table summarizes the activity related to the Company's unrecognized tax benefits for the year ended
December
201
7
and
December 2016 (
in thousands):
 
   
2017
   
2016
 
Beginning of the year unrecognized tax benefits
  $
707
    $
651
 
Increases related to prior year tax positions
   
643
     
 
Increases related to current year tax positions
   
169
     
56
 
End of the year unrecognized tax benefits
  $
1,519
    $
707
 
 
It is the Company
’s policy to recognize interest and penalties related to income tax matters in income tax expense. As of
December 31, 2017,
the Company had accrued interest and penalties of $
97,298
related to uncertain tax positions.
 
2017
Tax Act
 
On
December 22, 2017,
the Tax Cuts and Jobs Act of
2017
(the
“2017
Tax Act”) was signed into law making significant changes to the Code. The
2017
Tax Act makes broad and complex changes to the U.S. tax code, including, but
not
limited to, (i) reducing the U.S. federal statutory tax rate from
35%
to
21%;
(ii) requiring companies to pay a
one
-time transition tax on certain un-repatriated earnings of foreign subsidiaries; (iii) generally eliminating U.S federal income taxes on dividends from foreign subsidiaries; (iv) requiring a current inclusion in U.S. federal taxable income of certain earnings of controlled foreign corporations; (v) eliminating the corporate alternative minimum tax (AMT) and changing how existing AMT credits can be realized; (vi) creating the base erosion anti-abuse tax (BEAT), a new minimum tax; (vii) creating a tax on global intangible low-taxed income (GILTI) of foreign subsidiaries; (viii) creating a new limitation on deductible interest expense; (ix) changing rules related to uses and limitations of net operating loss carryforwards created in tax years beginning after
December 31, 2017;
and (
x
) modifying the officer
’s compensation limitation.
 
In
December 2017,
the SEC issued Staff Accounting Bulletin
No.
118
(“SAB
118”
), which provided a measurement period of up to
one
year from the enactment date of the
2017
Tax Act for companies to complete the accounting for the
2017
Tax Act and its related impacts. The income tax effects of the
2017
Tax Act for which the accounting is incomplete include: the impact of the transition tax, the revaluation of deferred tax assets and liabilities to reflect the
21%
corporate tax rate, and the impact to the aforementioned items on state income taxes. The Company has made reasonable provisional estimates for each of the items applicable, however, these estimates
may
be affected by other analyses related to the
2017
Tax Act, including but
not
limited to, any deferred adjustments related to the filing of its
2017
federal and state income tax returns and further guidance yet to be issued.
 
ASC
740
requires companies to recognize the effect of tax law changes in the period of enactment, accordingly the effects must be recognized on companies’ calendar year-end financial statements, even though the effective date for most provisions is
January 1, 2018.
As a result the Company re-measured its net U.S. deferred tax assets at the
21%
future tax rate recorded a net decrease of approximately
$7.3
million.
 
At
December 31, 2017,
according to the
2017
Tax Act for estimating the Company's foreign undistributed earnings, the Company estimated an aggregate deficit in "accumulated earnings and profits," which is how foreign undistributed earnings are determined for the
one
-time transition tax and for U.S. income tax purposes. The deficit was primarily a result of
2017
stock option exercises by foreign employees, which exceeded current year and prior year foreign earnings. As a result, the
one
-time transition tax did
not
have a significant impact on the Company’s
2017
tax provision and there was
no
undistributed accumulated earnings and profits as of
December 31, 2017.
 
The Company's current effective tax r
ate does
not
include foreign taxes on undistributed profits of foreign subsidiaries. These earnings could become subject to incremental foreign withholding, should these earnings be actually remitted to the U.S. The Company's future effective tax rates could be adversely affected by earnings being lower in countries where the Company has lower statutory rates and being higher in countries where the Company has higher statutory rates, or by changes in tax laws, accounting principles, interpretations thereof, and due to changes in the valuation allowance of the Company's U.S. deferred tax assets.
 
The Company
considered the impact of the Act on its need for valuation allowance assessment. The Company’s ASC
740
-
30
assertion remains unchanged and continues to assert that it will indefinitely reinvest its undistributed earnings.