Related Party Transactions - Summary of Balances of Transactions with Related Parties (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Related Party Transactions [Abstract]
Cash and restricted cash deposits in affiliated bank	$ 187,602	$ 126,189
Other due/to from affiliate
Accounts receivable	38,120	28,419
Prepaid expenses and other assets	1,763	4,678
Operating lease right-of use assets	13,533	17,099
Other long-term assets	2,853	0
Accounts payable	5,601	4,607
Unearned income	40,982	35,807
Operating lease liabilities	$ 14,019	$ 17,781