Long-Lived Assets - Summary of Carrying Value of Software Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 157,963	$ 155,781
Accumulated Amortization	(125,437)	(119,381)
Net Amount	32,526	36,400
Acquired software
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	75,370	75,156
Accumulated Amortization	(68,157)	(65,719)
Net Amount	7,213	9,437
Internal use software
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	82,593	80,625
Accumulated Amortization	(57,280)	(53,662)
Net Amount	$ 25,313	$ 26,963