Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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+ Details

- Definition

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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+ Details

Segment and Geographic Information - Geographical Information Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Geographical Information
Total revenue	$ 229,699	$ 232,238	$ 690,292	$ 727,031
Assets	1,537,935		1,537,935		$ 1,810,859
Alternative Credential Segment
Geographical Information
Total revenue	92,095	94,996	292,714	292,532
Assets	1,157,773		1,157,773		1,351,607
Non-US
Geographical Information
Total revenue	28,100	$ 24,500	87,600	$ 79,800
Non-US \| Alternative Credential Segment
Geographical Information
Assets	$ 3,700		$ 3,700		$ 4,500