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Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Deferred tax assets:    
Product liability $ 263 $ 289
Employee compensation and benefits 3,822 3,621
Allowances for doubtful accounts and discounts 3,454 2,351
Inventories 886 1,411
Stock-based compensation 5,410 4,517
Other 1,623 1,487
Total deferred tax assets 15,458 13,676
Deferred tax liabilities:    
Depreciation 12,946 14,377
Other 343 387
Total deferred tax liabilities 13,289 14,764
Net deferred tax (liabilities)   $ (1,088)
Net deferred tax assets $ 2,169