General Information and Basis of Accounting - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 233,476	$ 237,991	$ 467,984	$ 474,585
PSAV | Revenue Benchmark | Contract Type
Disaggregation of Revenue [Line Items]
Customer concentration risk percentage	89.20%	89.90%	88.90%	90.40%
PEPM | Revenue Benchmark | Contract Type
Disaggregation of Revenue [Line Items]
Customer concentration risk percentage	9.30%	9.10%	9.40%	8.80%
Other | Revenue Benchmark | Contract Type
Disaggregation of Revenue [Line Items]
Customer concentration risk percentage	1.60%	1.00%	1.60%	0.80%
Network-Based Services
Disaggregation of Revenue [Line Items]
Revenues	$ 45,723	$ 57,148	$ 91,878	$ 114,343
Network-Based Services | PSAV
Disaggregation of Revenue [Line Items]
Revenues	31,647	41,288	62,869	82,238
Network-Based Services | PEPM
Disaggregation of Revenue [Line Items]
Revenues	12,356	14,431	25,409	29,329
Network-Based Services | Other
Disaggregation of Revenue [Line Items]
Revenues	1,720	1,429	3,600	2,776
Analytics-Based Services
Disaggregation of Revenue [Line Items]
Revenues	159,896	151,441	319,988	303,861
Analytics-Based Services | PSAV
Disaggregation of Revenue [Line Items]
Revenues	148,758	143,420	297,373	290,760
Analytics-Based Services | PEPM
Disaggregation of Revenue [Line Items]
Revenues	9,177	7,142	18,578	12,222
Analytics-Based Services | Other
Disaggregation of Revenue [Line Items]
Revenues	1,961	879	4,037	879
Payment and Revenue Integrity Services
Disaggregation of Revenue [Line Items]
Revenues	27,857	29,402	56,118	56,381
Payment and Revenue Integrity Services | PSAV
Disaggregation of Revenue [Line Items]
Revenues	27,749	29,302	55,901	56,174
Payment and Revenue Integrity Services | PEPM
Disaggregation of Revenue [Line Items]
Revenues	$ 108	$ 100	$ 217	$ 207