Note 17 - Income Taxes - Significant Components of Company's Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Lease liability	$ 4,684	$ 5,147
Inventory reserves	2,453	2,004
Net operating loss carry forwards	2,822	4,775
Stock-based compensation expense	2,782	1,742
Tax credits	3,022	2,485
Compensation accrual	1,236	1,037
Foreign currency exchange	282	229
Accrued expenses and other	491	0
Gross deferred tax assets	17,772	17,419
Less: valuation allowance	0	(857)
Deferred tax assets	17,772	16,562
Acquisition-related intangible asset	(14,770)	(13,972)
Depreciation	(8,509)	(8,493)
Right of use asset	(4,650)	(5,111)
Accrued expenses and other	0	(881)
Deferred tax liabilities	(27,929)	(28,457)
Net deferred tax liabilities	$ (10,157)	$ (11,895)