Note 8 - Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Goodwill [Table Text Block]

	Domestic		International			Total
Balance at December 31, 2016	$	621,451	$	83,189		$	704,640
Acquisitions of businesses, net		-		5,271			5,271
Foreign currency translation		-		11,612			11,612
Balance at December 31, 2017		621,451		100,072			721,523
Acquisitions of businesses, net		-		46,788			46,788
Foreign currency translation		-		(3,656	)		(3,656	)
Balance at December 31, 2018	$	621,451	$	143,204		$	764,655

	Year Ended December 31, 2018							Year Ended December 31, 2017
	Gross		Accumulated Impairment			Net		Gross		Accumulated Impairment			Net
Domestic	$	1,124,644	$	(503,193	)	$	621,451	$	1,124,644	$	(503,193	)	$	621,451
International		147,815		(4,611	)		143,204		104,683		(4,611	)		100,072
Total	$	1,272,459	$	(507,804	)	$	764,655	$	1,229,327	$	(507,804	)	$	721,523

Schedule Of Intangible Assets [Table Text Block]

	Weighted Average		December 31, 2018							December 31, 2017
	Amortization Years		Gross		Accumulated Amortization			Net Book Value		Gross		Accumulated Amortization			Net Book Value
Finite-lived intangible assets:
Tradenames		9	$	56,378	$	(32,416	)	$	23,962	$	52,784	$	(28,422	)	$	24,362
Customer lists		12		368,343		(307,149	)		61,194		340,138		(299,074	)		41,064
Patents		14		131,030		(101,060	)		29,970		131,137		(91,520	)		39,617
Unpatented technology		15		13,169		(12,058	)		1,111		13,169		(11,915	)		1,254
Software		-		1,046		(1,046	)		-		1,046		(1,046	)		-
Non-compete/other		7		3,829		(1,897	)		1,932		2,684		(1,537	)		1,147
Total finite-lived intangible assets			$	573,795	$	(455,626	)	$	118,169	$	540,958	$	(433,514	)	$	107,444
Indefinite-lived tradenames				128,321		-			128,321		128,321		-			128,321
Total intangible assets			$	702,116	$	(455,626	)	$	246,490	$	669,279	$	(433,514	)	$	235,765