Fair Value of Financial Assets and Liabilities - Schedule of Fair Value Hierarchy of Financial Assets and Liabilities under U.S. GAAP Guidance (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Assets:
Loans held for sale, at fair value	$ 1,141,298	$ 913,302
Fair Value, Recurring
Assets:
Marketable securities	0	0
Loans held for sale, at fair value	1,141,298	913,302
Total	1,153,441	919,342
Liabilities:
Contingent consideration	22,628	22,652
Total	23,984	25,068
Rate lock commitments | Fair Value, Recurring
Assets:
Derivative asset	2,878	3,241
Liabilities:
Derivative liability	1	607
Forward Sales Contracts | Fair Value, Recurring
Assets:
Derivative asset	9,265	2,799
Liabilities:
Derivative liability	1,355	1,809
Level 1 | Fair Value, Recurring
Assets:
Marketable securities	0	0
Loans held for sale, at fair value	0	0
Total	0	0
Liabilities:
Contingent consideration	0	0
Total	0	0
Level 1 | Rate lock commitments | Fair Value, Recurring
Assets:
Derivative asset	0	0
Liabilities:
Derivative liability	0	0
Level 1 | Forward Sales Contracts | Fair Value, Recurring
Assets:
Derivative asset	0	0
Liabilities:
Derivative liability	0	0
Level 2 | Fair Value, Recurring
Assets:
Marketable securities	0	0
Loans held for sale, at fair value	1,141,298	913,302
Total	1,141,298	913,302
Liabilities:
Contingent consideration	0	0
Total	0	0
Level 2 | Rate lock commitments | Fair Value, Recurring
Assets:
Derivative asset	0	0
Liabilities:
Derivative liability	0	0
Level 2 | Forward Sales Contracts | Fair Value, Recurring
Assets:
Derivative asset	0	0
Liabilities:
Derivative liability	0	0
Level 3
Liabilities:
Contingent consideration	22,628	22,652
Level 3 | Fair Value, Recurring
Assets:
Marketable securities	0	0
Loans held for sale, at fair value	0	0
Total	12,143	6,040
Liabilities:
Contingent consideration	22,628	22,652
Total	23,984	25,068
Level 3 | Rate lock commitments | Fair Value, Recurring
Assets:
Derivative asset	2,878	3,241
Liabilities:
Derivative liability	1	607
Level 3 | Forward Sales Contracts | Fair Value, Recurring
Assets:
Derivative asset	9,265	2,799
Liabilities:
Derivative liability	$ 1,355	$ 1,809