Goodwill (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

	Goodwill
	(in thousands)
Balance at January 1, 2015	$	27,856
Additions to goodwill	16,695
Currency translation adjustment	(2,578		)
Balance at December 31, 2015	41,973
Additions to goodwill	169,197
Currency translation adjustment	(1,752		)
Balance at December 31, 2016	$	209,418