Note 9 - Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2019

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

9. Goodwill and Intangible Assets

The changes in the carrying amount of goodwill by reportable segment for the years ended December 31, 2019 and 2018 are as follows:

	Domestic		International			Total
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
Acquisitions of businesses, net		37,758		3,078			40,836
Foreign currency translation		-		(207	)		(207	)
Balance at December 31, 2019	$	659,209	$	146,075		$	805,284

Refer to Note 3, “Acquisitions,” to the consolidated financial statements for further information regarding the Company’s acquisitions.

The details of the gross goodwill applicable to each reportable segment at December 31, 2019 and 2018 are as follows:

	Year Ended December 31, 2019							Year Ended December 31, 2018
	Gross		Accumulated Impairment			Net		Gross		Accumulated Impairment			Net
Domestic	$	1,162,402	$	(503,193	)	$	659,209	$	1,124,644	$	(503,193	)	$	621,451
International		150,686		(4,611	)		146,075		147,815		(4,611	)		143,204
Total	$	1,313,088	$	(507,804	)	$	805,284	$	1,272,459	$	(507,804	)	$	764,655

The following table summarizes intangible assets by major category as of December 31, 2019 and 2018:

	Weighted Average		December 31, 2019							December 31, 2018
	Amortization Years		Gross		Accumulated Amortization			Net Book Value		Gross		Accumulated Amortization			Net Book Value
Finite-lived intangible assets:
Tradenames		9	$	56,669	$	(36,613	)	$	20,056	$	56,378	$	(32,416	)	$	23,962
Customer lists		12		369,932		(314,380	)		55,552		368,343		(307,149	)		61,194
Patents		13		131,086		(110,554	)		20,532		131,030		(101,060	)		29,970
Developed technology		9		82,886		(17,872	)		65,014		13,169		(12,058	)		1,111
Software		-		1,046		(1,046	)		-		1,046		(1,046	)		-
Non-compete/other		4		12,063		(3,804	)		8,259		3,829		(1,897	)		1,932
Total finite-lived intangible assets			$	653,682	$	(484,269	)	$	169,413	$	573,795	$	(455,626	)	$	118,169
Indefinite-lived tradenames				128,321		-			128,321		128,321		-			128,321
Total intangible assets			$	782,003	$	(484,269	)	$	297,734	$	702,116	$	(455,626	)	$	246,490

Amortization of intangible assets was $28,644, $22,112 and $28,861 in 2019, 2018 and 2017, respectively. Excluding the impact of any future acquisitions, the Company estimates amortization expense for the next five years will be as follows: 2020 - $31,237; 2021 - $29,473; 2022 - $22,226; 2023 - $18,344; 2024 - $16,156.