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Revenue Recognition (Disaggregation of Revenue by Market Group) (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
Social Sector
Disaggregation of Revenue [Line Items]
Revenue	223,809	221,194	672,182	651,215
Corporate Sector
Disaggregation of Revenue [Line Items]
Revenue	37,334	8,596	111,634	27,275
Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 154	$ 1,428	$ (468)	$ 1,359

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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