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Income Taxes Components of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforward | $ 12,120 | $ 17,518
Compensation and benefits | 7,828 | 12,126
Inventory reserve | 1,689 | 2,750
Capital Loss Carryforward | 1,326 | 2,210
Accounts receivable reserve | 130 | 183
Other | 1,155 | 1,770
Total deferred tax assets | 24,248 | 36,557
Deferred Tax Liabilities, Intangible Assets | 3,115 | 0
Deferred tax liabilities: |  |
Property, plant and equipment | 41 | 433
Other | 403 | 688
Total deferred liabilities | 3,559 | 1,121
Net deferred assets before valuation allowance | 20,689 | 35,436
Valuation allowance | (2,556) | (35,416)
Net deferred assets | $ 18,133 | $ 20

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