Financing Receivables - Concentrations by State (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2022 USD ($) state	Dec. 31, 2021 USD ($) state
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		$ 56,073	$ 71,952
Financing Receivable | Geographic Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	100.00%	100.00%
Financing Receivable | Geographic Concentration Risk | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	19.10%	18.60%
Financing Receivable | Geographic Concentration Risk | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	17.80%	17.70%
Financing Receivable | Geographic Concentration Risk | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	8.70%	9.40%
Financing Receivable | Geographic Concentration Risk | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	6.70%	6.80%
Financing Receivable | Geographic Concentration Risk | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	6.20%	6.50%
Financing Receivable | Geographic Concentration Risk | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	4.50%	4.50%
Financing Receivable | Geographic Concentration Risk | Massachusetts
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	4.10%	4.40%
Financing Receivable | Geographic Concentration Risk | Pennsylvania
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	4.10%	4.00%
Financing Receivable | Geographic Concentration Risk | South Carolina
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	3.70%	3.50%
Financing Receivable | Geographic Concentration Risk | Missouri
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	2.80%	2.80%
Financing Receivable | Geographic Concentration Risk | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
% of total	22.30%	21.80%
Loans and Loan Participations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		$ 3,944	4,875
Loans and Loan Participations | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		732	930
Loans and Loan Participations | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		698	867
Loans and Loan Participations | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		371	423
Loans and Loan Participations | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		269	325
Loans and Loan Participations | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		256	302
Loans and Loan Participations | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		178	220
Loans and Loan Participations | Massachusetts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		174	201
Loans and Loan Participations | Pennsylvania
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		159	202
Loans and Loan Participations | South Carolina
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		137	178
Loans and Loan Participations | Missouri
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		111	135
Loans and Loan Participations | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amounts outstanding		$ 859	$ 1,092
Loans and Loan Participations | Financing Receivable | Geographic Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of states not individually disclosed | state		31	31
Threshold percentage for disclosing individually		2.60%	2.60%