Intangibles (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Indefinite-Lived Intangible Assets

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

	December 31, 2017				December 31, 2016
	Historical Cost		Accumulated Amortization		Historical Cost		Accumulated Amortization
Customer lists	$	54,516	$	51,957	$	49,362	$	45,797
Trademarks	26,372		—		24,091		—
License agreements	1,187		1,187		1,126		1,126
Developed technology	7,925		6,636		7,287		5,969
Patents	5,566		5,559		5,512		5,487
Other	1,162		1,145		1,162		1,138
	$	96,728	$	66,484	$	88,540	$	59,517

Schedule of Finite Lived Intangible Assets

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

	December 31, 2017				December 31, 2016
	Historical Cost		Accumulated Amortization		Historical Cost		Accumulated Amortization
Customer lists	$	54,516	$	51,957	$	49,362	$	45,797
Trademarks	26,372		—		24,091		—
License agreements	1,187		1,187		1,126		1,126
Developed technology	7,925		6,636		7,287		5,969
Patents	5,566		5,559		5,512		5,487
Other	1,162		1,145		1,162		1,138
	$	96,728	$	66,484	$	88,540	$	59,517