Subordinated Debt (Details) - USD ($)	1 Months Ended			3 Months Ended	12 Months Ended
	May 31, 2021	Aug. 31, 2014	Oct. 31, 2013	Sep. 30, 2023	Jun. 30, 2023	Feb. 28, 2022
Subordinated debt				$ 23,118,000	$ 23,105,000
Investment, carrying value				444,900,000	464,200,000
Prepaid Expenses and Other Current Assets
Investment, face amount				505,000
Investment, carrying value				$ 465,000	464,000
Trust Preferred Securities
Number of years after securities became redeemable				5 years
Interest rate (as a percent)				8.42%
Subordinated debt				$ 7,200,000	7,200,000
Ozarks Legacy Community Financial, Inc.
Interest rate (as a percent)				8.12%
Floating rate			$ 3,100,000
Ozarks Legacy Community Financial, Inc. | Reported Value Measurement
Floating rate				$ 2,800,000	2,700,000
Peoples Service Company, Inc.
Interest rate (as a percent)				7.47%
Floating rate		$ 6,500,000
Peoples Service Company, Inc. | Reported Value Measurement
Floating rate				$ 5,500,000	5,500,000
Fortune | Subordinated notes Issued in May 2021
Interest rate (as a percent)	4.50%
Subordinated debt				$ 7,600,000	$ 7,700,000
Instrument face amount						$ 7,500,000
Fortune | Subordinated notes Issued in May 2021 | Secured overnight financing rate
Variable rate (as a percent)	3.77%