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Income Taxes Components of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforward | $ 17,518 | $ 19,336
Compensation and benefits | 12,126 | 11,979
Inventory reserve | 2,750 | 2,726
Capital Loss Carryforward | 2,210 | 2,210
Accounts receivable reserve | 183 | 218
Other | 1,770 | 2,073
Total deferred tax assets | 36,557 | 38,542
Deferred tax liabilities: |  |
Property, plant and equipment | 433 | 1,100
Other | 688 | 875
Total deferred liabilities | 1,121 | 1,975
Net deferred assets before valuation allowance | 35,436 | 36,567
Valuation allowance | (35,416) | (36,516)
Net deferred assets | $ 20 | $ 51

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