Line of Credit - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Line Of Credit Facility [Line Items]
Amortization of debt issuance costs	$ 54,000	$ 40,000
Interest expense	$ 464,000	143,000
Ameribor [Member]
Line Of Credit Facility [Line Items]
Line of credit facility, interest rate description	(i) the Ameribor Rate plus three and one-quarter percent (3.25%); and (ii) five percent (5.0%).
Revolving Credit Facility [Member]
Line Of Credit Facility [Line Items]
Line of credit facility, maximum amount outstanding during period	$ 10,000,000
Agreement maturity date	Mar. 31, 2022
Line of credit facility, conversion of outstanding principal balance to term loan of fee	0.25%
Maturity date extended	Mar. 31, 2026
Line of credit facility, description	the partnership has the option prior to the end of the extended maturity date to convert the then outstanding principal balance on the line of credit to a two-year term loan - for a fee of one-quarter of one percent (0.25%) – thereby extending the maturity date to March 2026.
Line of credit facility, interest rate description	per annum rate of the greater of (i) five percent (5%) or (ii) the sum of the one-month LIBOR rate plus three and one-quarter percent (3.25%).
Line of credit facility, interest rate	5.00%
Interest rate, increase (decrease)	0.25%
Line of credit facility, unused line of fee	0.50%
Line of Credit Facility, Commitment Fee Description	there is a quarterly unused line fee equal to one-half of one percent (0.50%) per annum of the average daily difference between the average principal outstanding and fifty percent (50%) of the maximum principal of $10 million ($5,000,000).
Pledged Loans Aggregate Principal Amount	$ 21,487,000	5,371,000
Pledged loans, advance amount	10,000,000	3,491,000
Amortization of debt issuance costs	108,000
Interest expense	$ 54,000	$ 40,000
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line Of Credit Facility [Line Items]
Line of credit facility, interest rate	3.25%
Revolving Credit Facility [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Minimum compensating balance amount	$ 1,000,000.0
Revolving Credit Facility [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Line of credit facility, average rate	50.00%
Line Of Credit [Member]
Line Of Credit Facility [Line Items]
Interest rate, increase (decrease)	5.00%
Minimum tangible net worth	$ 50,000,000
Debt instrument, covenant description	the partnership shall maintain (i) minimum tangible net worth of $50 million, net of amounts due from related companies; (ii) debt service coverage ratio at all times of not less than 2.00 to 1.00;
Line Of Credit [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Debt service coverage ratio	1.00
Line Of Credit [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Debt service coverage ratio	2.00
Line Of Credit [Member] | Maximum [Member] | Financial Asset, 61 Days Past Due [Member]
Line Of Credit Facility [Line Items]
Delinquency rate	10.00%