Commitments and Contingencies - Allowance for Credit Losses for Unfunded Loan Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 4,467	$ 3,112
Impact of adopting ASU 2016-13 at January 1, 2020	5,189	4,467
Provision for credit losses	722	6
Balance at end of period	5,189	4,467
Cumulative Effect, Period of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	0	1,349
Impact of adopting ASU 2016-13 at January 1, 2020		0
Balance at end of period		0
Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 4,467	4,461
Impact of adopting ASU 2016-13 at January 1, 2020		4,467
Balance at end of period		$ 4,467