| As of December 31 , | ||||||||||||
| (in thousands) | 201 7 | 201 6 | 201 5 | |||||||||
| Current: | ||||||||||||
| Federal | $ | 7,695 | $ | 2,563 | $ | (149 | ) | |||||
| State and local | 666 | 929 | (752 | ) | ||||||||
8,361 | 3,492 | (901 | ) | |||||||||
| Deferred | (10,974 | ) | (1,994 | ) | (5,916 | ) | ||||||
| Income tax provision (benefit) | $ | (2,613 | ) | $ | 1,498 | $ | (6,817 | ) | ||||
| (in thousands ) | 201 7 | 201 6 | ||||||
| Deferred tax assets : | ||||||||
| Inventory (excluding LIFO reserve ) | $ | 1,690 | $ | 2,531 | ||||
| Net operating loss and tax credit carryforward s | 3,520 | 3,224 | ||||||
| Allowance for doubtful account s | 419 | 533 | ||||||
| Accrued expense s | 5,684 | 7,228 | ||||||
| Othe r | 143 | 169 | ||||||
| Deferred tax assets before valuation allowanc e | 11,456 | 13,685 | ||||||
| Valuation allowanc e | (2,379 | ) | (2,017 | ) | ||||
| Total deferred tax asset s | 9,077 | 11,668 | ||||||
| Deferred tax liabilities : | ||||||||
| LIFO reserv e | (3,958 | ) | (5,874 | ) | ||||
| Property and equipmen t | (11,363 | ) | (19,846 | ) | ||||
| Intangible s | (5,901 | ) | (9,067 | ) | ||||
| Total deferred tax liabilitie s | (21,222 | ) | (34,787 | ) | ||||
| Deferred tax liabilities, ne t | $ | (12,145 | ) | $ | (23,119 | ) | ||
| (in thousands ) | 201 7 | 201 6 | 201 5 | |||||||||
| Balance as of January 1 | $ | 38 | $ | 38 | $ | 58 | ||||||
| Decreases related to prior year tax positions | - | - | (20 | ) | ||||||||
| Increases related to current year tax positions | 15 | 13 | 13 | |||||||||
| Decreases related to lapsing of statute of limitations | (13 | ) | (13 | ) | (13 | ) | ||||||
| Balance as of December 31 | $ | 40 | $ | 38 | $ | 38 | ||||||
| 201 7 | 201 6 | 201 5 | ||||||||||
| U.S. federal statutory rate in effect | 35.0% | 35.0% | 35.0% | |||||||||
| State and local taxes, net of federal benefit | 3.6% | 11.8% | 1.4% | |||||||||
| Sec. 199 manufacturing deduction | (3.8% | ) | (33.6% | ) | 0.0% | |||||||
| Meals and entertainment | 1.8% | 64.3% | (0.6% | ) | ||||||||
| Tax credits | (1.3% | ) | (48.7% | ) | 0.4% | |||||||
| Change in valuation allowance | 0.6% | 205.4% | 0.0% | |||||||||
| Change in U.S. federal statutory rate | (37.7% | ) | 0.0% | 0.0% | ||||||||
| Change in tax affect of SERP | (11.4% | ) | 0.0% | 0.0% | ||||||||
| Goodwill impairment | 0.0% | 0.0% | (17.1% | ) | ||||||||
| All other, net | (2.8% | ) | 122.4% | 1.2% | ||||||||
| Effective income tax rate | (16.0% | ) | 356.6% | 20.3% | ||||||||