Goodwill (Tables)

9 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill

Changes in the carrying amount of goodwill by segment is shown below:

	Services		International			Products and Systems		Total
Balance at December 31, 2018	$	243,476	$	35,783		$	—	$	279,259
Goodwill acquired during the period	1,753		—			—		1,753
Adjustments to preliminary purchase price allocations	923		—			—		923
Foreign currency translation	2,830		(1,644		)	—		1,186
Balance at September 30, 2019	$	248,982	$	34,139		$	—	$	283,121