Loans Receivable - Credit Loss Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 224,036	$ 68,372
Provision for loan losses	1,383	7,072
Loan write-offs	(1,322)	0
Foreign currency translation	49	(85)
Balance at end of period	$ 224,146	$ 80,571
Accounting Standards Update [Extensible List]		Accounting Standards Update 2016-13
Accounting Standards Update 2016-13 | Cumulative effect, period of adoption, adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		$ 5,212