Accounting Policies - Schedule of Error Corrections and Prior Period Adjustments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Interest income
Loans receivable	$ 55,364	$ 36,539
Total interest income	71,798	50,742
Net interest income	45,237	46,831
Net interest income after credit loss expense (recovery)	44,995	48,217
Non–interest expense
Loan expense	1,118	1,205
Total non–interest expense	34,524	35,270
Net income	18,228	23,563
Operating Activities
Other assets	3,900	657
Net cash provided by operating activities	25,311	28,193
Investing activities
Net change in loans	(27,865)	(68,629)
Net cash used in investing activities	(19,490)	(556,996)
Net Change in Cash and Cash Equivalents	134,722	120,954	$ 123,505	$ 593,508
Additional Supplemental Information
Transfer of available for sale securities to held to maturity securities	$ 0	120,881
As Reported
Interest income
Loans receivable		37,879
Total interest income		52,082
Net interest income		48,171
Net interest income after credit loss expense (recovery)		49,557
Non–interest expense
Loan expense		2,545
Total non–interest expense		36,610
Net income		23,563
Operating Activities
Other assets		4,730
Net cash provided by operating activities		27,055
Investing activities
Net change in loans		(67,592)
Net cash used in investing activities		(555,959)
Net Change in Cash and Cash Equivalents		120,954
Indirect Loan Dealer Reserve Adjustment
Interest income
Loans receivable		(1,340)
Total interest income		(1,340)
Net interest income		(1,340)
Net interest income after credit loss expense (recovery)		(1,340)
Non–interest expense
Loan expense		(1,340)
Total non–interest expense		(1,340)
Operating Activities
Other assets		1,037
Net cash provided by operating activities		1,037
Investing activities
Net change in loans		(1,037)
Net cash used in investing activities		(1,037)
Transfer of AFS Securities to HTM Securities
Additional Supplemental Information
Transfer of available for sale securities to held to maturity securities		120,881
As Revised
Operating Activities
Other assets		5,767
Net cash provided by operating activities		$ 28,092