Note 17 - Significant Components of Company's Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Net operating loss carry forward, foreign	$ 1,567	$ 2,292
Stock-based compensation expense	1,043	755
Foreign currency exchange	762	353
Accrued expenses and other	510	527
Inventory reserve	$ 547	334
Tax credit carry forward		46
Deferred tax assets	$ 4,429	4,307
Acquisition-related Intangibles	(3,738)	(4,827)
Depreciation	(7,466)	(7,221)
Deferred tax liabilities	(11,204)	(12,048)
Net deferred tax liabilities	$ (6,775)	$ (7,741)