Revenue Recognition (Disaggregation of Recurring Revenue by Type) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 261,297	$ 231,218	$ 783,348	$ 679,849
Contractual recurring [Member]
Disaggregation of Revenue [Line Items]
Revenue	178,264	150,581	530,146	448,552
Transactional recurring [Member]
Disaggregation of Revenue [Line Items]
Revenue	71,123	67,949	216,414	193,714
Recurring [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 249,387	$ 218,530	$ 746,560	$ 642,266