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Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Deferred tax assets:    
Product liability $ 294 $ 201
Employee compensation and benefits 2,356 2,336
Allowances for doubtful accounts and discounts 2,750 1,769
Inventories 729 758
Stock-based compensation 2,292 1,406
Other 1,113 1,326
Total deferred tax assets 9,534 7,796
Deferred tax liabilities:    
Depreciation 6,256 8,956
Other 309 242
Total deferred tax liabilities 6,565 9,198
Net deferred tax (liabilities) assets $ 2,969 $ (1,402)