REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 39,469	$ 39,461
Revenue recognized when services are performed or assets are sold
Disaggregation of Revenue [Line Items]
Revenue	34,093	33,935
Revenue related to technology platforms and professional services
Disaggregation of Revenue [Line Items]
Revenue	2,839	3,216
Reimbursable expenses revenue
Disaggregation of Revenue [Line Items]
Revenue	2,537	2,310
Servicer and Real Estate | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	31,502	31,945
Servicer and Real Estate | Revenue recognized when services are performed or assets are sold | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	26,397	26,553
Servicer and Real Estate | Revenue related to technology platforms and professional services | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	2,684	3,208
Servicer and Real Estate | Reimbursable expenses revenue | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	2,421	2,184
Origination | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	7,967	7,516
Origination | Revenue recognized when services are performed or assets are sold | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	7,696	7,382
Origination | Revenue related to technology platforms and professional services | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	155	8
Origination | Reimbursable expenses revenue | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 116	$ 126