| Organization Consolidation And Presentation Of Financial Statements [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Organization Consolidation And Presentation Of Financial Statements [Abstract] | |
Summary of Estimated Fair Value of Short-Term Investments |
The following represents a summary of the estimated fair value of short-term investments at December 31, 2016 and 2015 (in thousands):
|
At December 31, 2016 |
|
Maturity
(in years) |
|
Amortized
Cost |
|
|
Unrealized
Gain |
|
|
Unrealized
Loss |
|
|
Estimated
Fair Value |
|
|
Available-for-sale investment securities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Commercial paper |
|
Less than 1 |
|
$ |
8,483 |
|
|
$ |
1 |
|
|
$ |
(2 |
) |
|
$ |
8,482 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Trading securities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mutual funds held for nonqualified deferred compensation plan participants |
|
|
|
$ |
354 |
|
|
$ |
26 |
|
|
$ |
(2 |
) |
|
$ |
378 |
|
|
Total |
|
|
|
$ |
8,837 |
|
|
$ |
27 |
|
|
$ |
(4 |
) |
|
$ |
8,860 |
|
|
At December 31, 2015 |
|
Maturity
(in years) |
|
Amortized
Cost |
|
|
Unrealized
Gain |
|
|
Unrealized
Loss |
|
|
Estimated
Fair Value |
|
|
Available-for-sale investment securities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Commercial paper |
|
Less than 1 |
|
$ |
21,712 |
|
|
$ |
23 |
|
|
$ |
— |
|
|
$ |
21,735 |
|
|
US Treasuries |
|
Less than 1 |
|
|
2,035 |
|
|
|
— |
|
|
|
(1 |
) |
|
|
2,034 |
|
|
Government-sponsored enterprise securities |
|
Less than 1 |
|
|
4,029 |
|
|
|
— |
|
|
|
(2 |
) |
|
|
4,027 |
|
|
|
|
|
|
$ |
27,776 |
|
|
$ |
23 |
|
|
$ |
(3 |
) |
|
$ |
27,796 |
|
|
Trading securities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mutual funds held for nonqualified deferred compensation plan participants |
|
|
|
$ |
224 |
|
|
$ |
1 |
|
|
$ |
(3 |
) |
|
$ |
222 |
|
|
Total |
|
|
|
$ |
28,000 |
|
|
$ |
24 |
|
|
$ |
(6 |
) |
|
$ |
28,018 |
|
|
Summary of Accounts Receivable |
Accounts receivable consisted of the following at (in thousands):
|
|
|
December 31, |
|
|
|
|
2016 |
|
|
2015 |
|
|
Accounts receivable |
|
$ |
12,112 |
|
|
$ |
14,583 |
|
|
Less allowance for doubtful accounts, and product returns |
|
|
(940 |
) |
|
|
(528 |
) |
|
Total |
|
$ |
11,172 |
|
|
$ |
14,055 |
|
|
Reconciliation of Change in Estimated Allowance for Doubtful Accounts, and Product Returns |
The following table provides a reconciliation of the change in estimated allowance for doubtful accounts, and product returns for the years ended December 31, 2016, 2015 and 2014 (in thousands):
|
|
|
Allowance for doubtful accounts |
|
|
Balance at December 31, 2013 |
|
$ |
218 |
|
|
Provision for doubtful accounts and return reserves |
|
|
188 |
|
|
Write-offs and adjustments, net of recoveries |
|
|
(153 |
) |
|
Balance at December 31, 2014 |
|
$ |
253 |
|
|
Provision for doubtful accounts and return reserves |
|
|
70 |
|
|
Write-offs and adjustments, net of recoveries |
|
|
(102 |
) |
|
Balance at December 31, 2015 |
|
$ |
221 |
|
|
Provision for doubtful accounts and return reserves |
|
632 |
|
|
Write-offs and adjustments, net of recoveries |
|
|
(118 |
) |
|
Balance at December 31, 2016 |
|
$ |
735 |
|
|
Summary of Inventory |
Inventory consisted of the following at (in thousands):
|
|
|
December 31, |
|
|
|
|
2016 |
|
|
2015 |
|
|
Raw materials |
|
$ |
9,375 |
|
|
$ |
10,606 |
|
|
Work in process |
|
|
4,395 |
|
|
|
3,394 |
|
|
Finished goods |
|
|
7,425 |
|
|
|
3,543 |
|
|
Total |
|
$ |
21,195 |
|
|
$ |
17,543 |
|
|
Summary of Property and Equipment |
Property and equipment consisted of the following at (in thousands):
|
|
|
December 31, |
|
|
|
|
2016 |
|
|
2015 |
|
|
Leasehold improvements |
|
$ |
8,851 |
|
|
$ |
7,781 |
|
|
Computer equipment and software |
|
|
7,844 |
|
|
|
6,599 |
|
|
Office furniture and equipment |
|
|
4,185 |
|
|
|
3,898 |
|
|
Manufacturing and scientific equipment |
|
|
16,785 |
|
|
|
12,793 |
|
|
|
|
|
37,665 |
|
|
|
31,071 |
|
|
Less accumulated depreciation and amortization |
|
|
(19,256 |
) |
|
|
(15,545 |
) |
|
Total |
|
$ |
18,409 |
|
|
$ |
15,526 |
|
|
Summary of Capitalized Patents |
The following represents the capitalized patents at December 31, 2016 and 2015 (in thousands)
|
|
|
December 31, |
|
|
|
|
2016 |
|
|
2015 |
|
|
Gross amount |
|
$ |
3,247 |
|
|
$ |
3,247 |
|
|
Accumulated amortization |
|
|
(1,463 |
) |
|
|
(1,137 |
) |
|
Total |
|
$ |
1,784 |
|
|
$ |
2,110 |
|
|
Weighted average remaining amortization
period (in months) |
|
|
66 |
|
|
|
78 |
|
|