Debt - Narrative (Details) - USD ($)		6 Months Ended
	Sep. 24, 2018	Jun. 30, 2023	Jun. 30, 2022	Aug. 08, 2023
Senior Unsecured Notes | Senior Unsecured Notes
Debt Instrument [Line Items]
Face amount of debt	$ 25,300,000	$ 24,300,000
Maturity date	Sep. 30, 2023
Interest rate	6.75%
Number of units repurchased		0	0
Debt issuance costs		$ 65,000
Senior Unsecured Notes | Senior Unsecured Notes | Subsequent Events
Debt Instrument [Line Items]
Cash on hand available to repay existing notes				$ 12,500,000
Fund pledged by directors for existing potes repayment				12,500,000
Current liquidity shortfall				12,200,000
Senior Unsecured Notes | Senior Unsecured Notes August 2023 | Subsequent Events
Debt Instrument [Line Items]
Face amount of debt				7,200,000
Liquidity to fund repayment of existing notes				$ 24,400,000
Maturity date				Sep. 30, 2028
Interest rate				9.75%
Debt issuance costs				$ 691,000
Subordinated notes | Subordinated notes
Debt Instrument [Line Items]
Face amount of debt	$ 10,500,000	$ 10,500,000
Maturity date	Sep. 30, 2038
Interest rate, payment terms		Interest is payable quarterly at the end of March, June, September and December.
Call premium percentage	12.50%
Debt issuance costs		$ 785,000
Subordinated notes | Subordinated notes | Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Interest rate	7.50%
Call premium	$ 1,100,000
Subordinated notes | Subordinated notes | Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Interest rate	12.50%
Call premium	$ 1,750,000
Subordinated notes | Subordinated notes | Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Call premium	$ 3,050,000.00