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Note 15 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

		Year Ended December 31,
(in thousands)		2020				2019				2018
Domestic		$	58,551			$	74,841			$	81,893
Foreign			4,394				6,352				9,762
Total		$	62,945			$	81,193			$	91,655

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

		Year Ended December 31,
(in thousands)		2020				2019				2018
Current:
Federal		$	2,128			$	6,991			$	(782	)
State			1,136				2,882				2,078
Foreign			1,241				1,544				1,810
Deferred
Federal			6,904				5,121				11,325
State			(431	)			269				538
Foreign			210				(809	)			(430	)
Valuation Allowance			890				1,540				528
Total		$	12,078			$	17,538			$	15,067

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

		Year Ended December 31,
		2020				2019				2018
Federal tax statutory rate			21.0	%			21.0	%			21.0	%
State tax (net of federal benefit)			2.1				2.1				2.0
Share based compensation			(1.3	)			(0.5	)			(2.8	)
Valuation allowance against deferred tax assets			2.0				1.4				0.7
Research and development credit			(3.7	)			(2.8	)			(2.5	)
Foreign rate differential			(0.8	)			(0.3	)			(0.1	)
Tax reserves			1.4				1.1				(0.1	)
Provision to return difference			(1.4	)			-				-
Miscellaneous			(0.1	)			(0.4	)			(0.5	)
Transition tax			-				-				(0.8	)
Revaluation of deferred tax liability			-				-				(0.5	)
Total			19.2	%			21.6	%			16.4	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

		December 31,
(in thousands)		2020				2019
Deferred tax assets:
Accrued expenses		$	2,155			$	1,362
Leases			3,598				3,337
Stock-based compensation			3,356				3,325
Intangible assets			1,693				1,171
Inventories			172				169
Other assets			1,790				1,765
Net operating loss			6,647				6,513
Less valuation allowance			(9,138	)			(8,248	)
Total deferred tax assets			10,273				9,394
Deferred tax liabilities:
Depreciation			(32,671	)			(26,750	)
Goodwill			(7,858	)			(5,590	)
Leases			(3,598	)			(3,337	)
Total deferred tax liabilities			(44,127	)			(35,677	)
Net deferred tax liability		$	(33,854	)		$	(26,283	)

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

		December 31,
		2020				2019
Balance at beginning of period		$	4,598			$	4,096
Additions for tax positions of current year			324				592
Additions for tax positions of prior years			475				-
Decrease related to expiration of statutes of limitations			(567	)			(90	)
Balance at period end		$	4,830			$	4,598

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