Securities Held-to-Maturity (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2022 USD ($) item	Dec. 31, 2021 USD ($)	Jun. 30, 2022 USD ($)
Held-to-Maturity
Face Value	$ 236,712,000	$ 210,728,000
Net Carrying Value	157,818,000	140,484,000
Unrealized Gain		9,427,000
Unrealized Loss	(7,791,000)
Estimated Fair Value	150,027,000	149,911,000
Allowance for Credit Losses	2,090,000	1,753,000	$ 2,022,000
B Piece bonds
Held-to-Maturity
Face Value	43,921,000	61,360,000
Net Carrying Value	34,527,000	47,615,000
Unrealized Gain	1,995,000	4,420,000
Estimated Fair Value	36,522,000	52,035,000
Allowance for Credit Losses	$ 287,000	$ 331,000	266,000
Seven B Piece Bonds | Held-to-Maturity Securities
Held-to-Maturity
Bonds retained percentage	49.00%
Number of B Piece bonds | item	7
Discounted value of bonds purchased	$ 74,700,000
Remaining of B Piece bond sold to the third party at par	51.00%
Estimated weighted average remaining maturity period	6 years
Initial face value of bonds purchased	$ 106,200,000
Agency B Piece Bonds
Held-to-Maturity
Weighted average variable interest rate (as a percent)		11.32%
Agency B Piece Bonds | Held-to-Maturity Securities
Held-to-Maturity
Weighted average variable interest rate (as a percent)	3.74%
Weighted average effective interest rate (as a percent)	11.92%
Held-to-maturity securities, estimated fiscal year
Within one year	$ 7,500,000
After one year through five years	19,800,000
After five years through ten years	800,000
After ten years	15,800,000
APL certificates
Held-to-Maturity
Face Value	192,791,000	$ 149,368,000
Net Carrying Value	123,291,000	92,869,000
Unrealized Gain		5,007,000
Unrealized Loss	(9,786,000)
Estimated Fair Value	113,505,000	97,876,000
Allowance for Credit Losses	1,803,000	$ 1,422,000	$ 1,756,000
APL certificates | Held-to-Maturity Securities
Held-to-Maturity
Face Value	$ 192,800,000
Weighted average variable interest rate (as a percent)	3.94%
Estimated weighted average remaining maturity period	7 years 9 months 10 days
Amount purchased at a discount	$ 119,000,000.0
Weighted average fixed interest rate	8.85%	9.11%
Held-to-maturity securities, estimated fiscal year
After one year through five years	$ 6,800,000
After five years through ten years	$ 186,000,000.0
APL certificates | Held-to-Maturity Securities | Minimum
Held-to-Maturity
Securities maturity term	5 years
APL certificates | Held-to-Maturity Securities | Maximum
Held-to-Maturity
Securities maturity term	10 years