General Information and Basis of Accounting - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 234,508	$ 236,594
PSAV | Revenue Benchmark | Contract Type
Disaggregation of Revenue [Line Items]
Customer concentration risk percentage	88.70%	90.90%
PEPM | Revenue Benchmark | Contract Type
Disaggregation of Revenue [Line Items]
Customer concentration risk percentage	9.60%	8.50%
Other | Revenue Benchmark | Contract Type
Disaggregation of Revenue [Line Items]
Customer concentration risk percentage	1.70%	0.60%
Network-Based Services
Disaggregation of Revenue [Line Items]
Revenues	$ 46,155	$ 57,195
Network-Based Services | PSAV
Disaggregation of Revenue [Line Items]
Revenues	31,222	40,950
Network-Based Services | PEPM
Disaggregation of Revenue [Line Items]
Revenues	13,053	14,898
Network-Based Services | Other
Disaggregation of Revenue [Line Items]
Revenues	1,880	1,347
Analytics-Based Services
Disaggregation of Revenue [Line Items]
Revenues	160,092	152,420
Analytics-Based Services | PSAV
Disaggregation of Revenue [Line Items]
Revenues	148,615	147,340
Analytics-Based Services | PEPM
Disaggregation of Revenue [Line Items]
Revenues	9,401	5,080
Analytics-Based Services | Other
Disaggregation of Revenue [Line Items]
Revenues	2,076	0
Payment and Revenue Integrity Services
Disaggregation of Revenue [Line Items]
Revenues	28,261	26,979
Payment and Revenue Integrity Services | PSAV
Disaggregation of Revenue [Line Items]
Revenues	28,152	26,872
Payment and Revenue Integrity Services | PEPM
Disaggregation of Revenue [Line Items]
Revenues	$ 109	$ 107