Debt - Outstanding Senior Debt (Details) - FHLB of Indianapolis - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Gross Debt	$ 27,387	$ 27,637
Unamortized Debt Issuance Costs	2,441	2,576
Debt Issuance Costs, Net, Total	24,946	25,061
Senior Unsecured Notes
Debt Instrument [Line Items]
Gross Debt	17,887	17,887
Unamortized Debt Issuance Costs	1,591	1,679
Debt Issuance Costs, Net, Total	16,296	16,208
Senior Secured Notes
Debt Instrument [Line Items]
Gross Debt	9,500	9,750
Unamortized Debt Issuance Costs	850	897
Debt Issuance Costs, Net, Total	$ 8,650	$ 8,853