Intangible Asset (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Nov. 20, 2018
Intangible Asset
Client-related intangible asset	$ 100,000	$ 100,000
Accumulated amortization	(14,947)	(100,000)
Intangible asset, net	85,053		$ 100,000
Amortization expense	$ 14,900	$ 85,100
Amortization period		9 months 18 days