Business Combinations - Supplemental pro forma information (Details) - Pinnacle 21, LLC - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Unaudited pro forma combined financial information
Revenue	$ 303,234	$ 262,048
Net Income (Loss)	(11,307)	(49,012)
Incremental amortization expense, net of tax	5,246	7,001
Incremental equity-based compensation expense, net of tax	$ 641	$ 856