Revenue and Related Matters - Deferred Implementation and Commission Costs (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Capitalized Contract Cost [Line Items]
Deferred implementation and commission costs, current portion	$ 4,995	$ 5,060
Deferred implementation and commission costs, net of current portion	9,686	9,238
Commissions
Capitalized Contract Cost [Line Items]
Deferred implementation and commission costs, current portion	3,107	2,997
Deferred implementation and commission costs, net of current portion	7,452	6,392
Implementation Costs
Capitalized Contract Cost [Line Items]
Deferred implementation and commission costs, current portion	1,888	2,063
Deferred implementation and commission costs, net of current portion	$ 2,234	$ 2,846