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Note 16 - Income Taxes - Significant Components of Company's Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Net operating loss carry forward, foreign $ 959 $ 1,253
Stock-based compensation expense 2,309 1,882
Foreign currency exchange 265 677
Accrued expenses and other 496 308
Inventory reserve 740 640
Deferred tax assets 4,769 4,760
Acquisition-related Intangibles (2,743) (2,932)
Depreciation (7,419) (8,376)
Deferred tax liabilities (10,162) (11,308)
Net deferred tax liabilities $ (5,393) $ (6,548)