Fair Value Measurements - Financial Instruments Carried at Fair Value on Recurring Basis (Details) - USD ($)		6 Months Ended
	Mar. 16, 2022	Jun. 30, 2024	Dec. 31, 2023
Assets:
Loans, held for sale		$ 89,380,000	$ 81,599,000
Loans, net, fair value		0	9,348,000
Investments held to maturity		3,446,000	3,446,000
Derivative instruments		14,382,000	2,404,000
Investment in unconsolidated joint venture		6,974,000	7,360,000
Liabilities:
Derivative instruments, at fair value		2,638,000	212,000
Contingent consideration		3,926,000	7,628,000
Mosaic
Fair value
Fair value of CERs issued	$ 25,000,000.0	$ 0
Value per CER unit	$ 0.83
Minimum
Fair value
Return of capital assumption used in PWERM		65.00%
Maximum
Fair value
Return of capital assumption used in PWERM		100.00%
Recurring
Assets:
Cash held in money market funds		$ 72,499,000	100,238,000
Loans, held for sale		89,380,000	81,599,000
Loans, net, fair value			9,348,000
Paycheck Protection Program loans		230,000	165,000
Mortgage backed securities, at fair value		30,174,000	27,436,000
Derivative instruments		14,382,000	2,404,000
Investment in unconsolidated joint venture		6,974,000	7,360,000
Preferred equity investments		108,423,000	108,423,000
Total assets		322,062,000	336,973,000
Liabilities:
Derivative instruments, at fair value		2,638,000	212,000
Contingent consideration		3,926,000	7,628,000
Total liabilities		6,564,000	7,840,000
Recurring | Level 1
Assets:
Cash held in money market funds		72,499,000	100,238,000
Total assets		72,499,000	100,238,000
Recurring | Level 2 inputs
Assets:
Loans, held for sale		80,235,000	81,599,000
Paycheck Protection Program loans		230,000	165,000
Mortgage backed securities, at fair value		30,174,000	27,436,000
Derivative instruments		14,382,000	2,404,000
Total assets		125,021,000	111,604,000
Liabilities:
Derivative instruments, at fair value		2,638,000	212,000
Total liabilities		2,638,000	212,000
Recurring | Level 3 inputs
Assets:
Loans, held for sale		9,145,000
Loans, net, fair value			9,348,000
Investment in unconsolidated joint venture		6,974,000	7,360,000
Preferred equity investments		108,423,000	108,423,000
Total assets		124,542,000	125,131,000
Liabilities:
Contingent consideration		3,926,000	7,628,000
Total liabilities		$ 3,926,000	$ 7,628,000