Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2019
Intangible asset activity
Net balance	$ 45,462
Net foreign currency translation	322
Amortization expense	(2,348)
Net balance	43,436
Intangible assets, net
Balance at cost		$ 95,676
Accumulated amortization		(52,240)
Ending Balance	45,462	43,436
Capitalized Technology
Intangible asset activity
Net balance	8,795
Net foreign currency translation	120
Amortization expense	(882)
Net balance	8,033
Intangible assets, net
Balance at cost		42,612
Accumulated amortization		(34,579)
Ending Balance	8,795	8,033
Customer relationships
Intangible asset activity
Net balance	30,408
Net foreign currency translation	214
Amortization expense	(912)
Net balance	29,710
Intangible assets, net
Balance at cost		39,359
Accumulated amortization		(9,649)
Ending Balance	30,408	29,710
Other
Intangible asset activity
Net balance	6,259
Net foreign currency translation	(12)
Amortization expense	(554)
Net balance	5,693
Intangible assets, net
Balance at cost		13,705
Accumulated amortization		(8,012)
Ending Balance	$ 6,259	$ 5,693