Note 8 - Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

8. Goodwill and Intangible Assets

The changes in the carrying amount of goodwill by reportable segment for the years ended

December 31, 2018

and

2017

are as follows:

	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

The details of the gross goodwill applicable to each reportable segment at

December 31, 2018

and

2017

are as follows:

	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

Refer to Note

3,

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

The following table summarizes intangible assets by major category as of

December 31, 2018

and

2017:

	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

Amortization of intangible assets was

$22,112,

$28,861

and

$32,953

in

2018,

2017

and

2016,

respectively. Excluding the impact of any future acquisitions, the Company estimates amortization expense for the next

five

years will be as follows:

2019

- 

$21,542;

2020

-

$21,451;

2021

-

$19,653;

2022

-

$12,339;

2023

-

$9,975.