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Note 15 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

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

		Year Ended December 31,
		2021				2020				2019
Current:
Federal		$	105,236			$	62,714			$	41,686
State			21,295				13,071				4,211
Foreign			10,536				1,974				2,660
			137,067				77,759				48,557
Deferred:
Federal			10,518				20,452				19,393
State			(3,728	)			1,243				1,390
Foreign			(7,863	)			(1,197	)			(1,263	)
			(1,073	)			20,498				19,520
Change in valuation allowance			(1,037	)			716				(778	)
Provision for income taxes		$	134,957			$	98,973			$	67,299

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

		December 31,
		2021				2020
Deferred tax assets:
Accrued expenses		$	37,797			$	24,358
Deferred revenue			27,003				15,851
Inventories			14,907				11,795
Stock-based compensation			10,202				8,348
Operating loss and credit carryforwards			68,368				31,275
Bad debt			1,253				1,633
Other			12,203				8,558
Valuation allowance			(7,874	)			(5,740	)
Total deferred tax assets			163,859				96,078
Deferred tax liabilities:
Goodwill and intangible assets			328,162				171,831
Depreciation			21,340				33,716
Debt refinancing costs			2,916				3,544
Prepaid expenses			1,664				1,259
Total deferred tax liabilities			354,082				210,350
Net deferred tax liabilities		$	(190,223	)		$	(114,272	)

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

		December 31,
		2021				2020
Unrecognized tax benefit, beginning of period		$	7,613			$	6,720
Increase in unrecognized tax benefit for positions taken in prior period			272				332
Increase in unrecognized tax benefit for positions taken in current period			990				750
Statute of limitation expirations			(228	)			(189	)
Settlements			-				-
Unrecognized tax benefit, end of period		$	8,647			$	7,613

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

		Year Ended December 31,
		2021				2020				2019
U.S. statutory rate			21.0	%			21.0	%			21.0	%
State taxes			4.3				4.3				4.3
State tax rate differential			0.0				0.0				(1.0	)
Research and development credits			(1.0	)			(1.1	)			(0.8	)
State credits			(1.1	)			(1.5	)			(1.0	)
Share-based compensation			(3.8	)			(1.0	)			(0.6	)
Nondeductible U.S. compensation			1.5				0.0				0.0
Foreign tax deduction			(1.5	)			0.0				0.0
Foreign deferred tax rate change			1.2				0.0				0.0
Other			(1.1	)			0.5				(0.8	)
Effective tax rate			19.5	%			22.2	%			21.1	%

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