Intangibles (Tables)

3 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Indefinite-Lived Intangible Assets

The company's intangibles consist of the following (in thousands):

	March 31, 2019				December 31, 2018
	Historical Cost		Accumulated Amortization		Historical Cost		Accumulated Amortization
Customer lists	$	52,311	$	51,590	$	51,828	$	50,768
Trademarks	24,666		—		24,385		—
Developed technology	7,660		6,655		7,608		6,563
Patents	5,511		5,511		5,500		5,497
License agreements	748		748		733		733
Other	1,162		1,147		1,162		1,149
Intangibles	$	92,058	$	65,651	$	91,216	$	64,710

Schedule of Finite-Lived Intangible Assets

The company's intangibles consist of the following (in thousands):

	March 31, 2019				December 31, 2018
	Historical Cost		Accumulated Amortization		Historical Cost		Accumulated Amortization
Customer lists	$	52,311	$	51,590	$	51,828	$	50,768
Trademarks	24,666		—		24,385		—
Developed technology	7,660		6,655		7,608		6,563
Patents	5,511		5,511		5,500		5,497
License agreements	748		748		733		733
Other	1,162		1,147		1,162		1,149
Intangibles	$	92,058	$	65,651	$	91,216	$	64,710