Goodwill (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Goodwill by Reporting Units

December 31, 2018	Beginning Balance		Additions		Foreign Currency Translation			Ending Balance
3D Manufacturing	$	40,802	$	—	$	(1,316	)	$	39,486
Construction BIM	6,521		1,010		(226		)	7,305
Public Safety Forensics	3,070		—		(107		)	2,963
3D Design	—		9,130		(180		)	8,950
Photonics	2,357		6,283		(70		)	8,570
Total	$	52,750	$	16,423	$	(1,899	)	$	67,274

December 31, 2017	Beginning Balance		Additions		Foreign Currency Translation		Ending Balance
3D Manufacturing	$	37,861	$	—	$	2,941	$	40,802
Construction BIM	6,078		—		443		6,521
Public Safety Forensics	2,805		55		210		3,070
3D Design	—		—		—		—
Photonics	—		2,357		—		2,357
Total	$	46,744	$	2,412	$	3,594	$	52,750