Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-1B

Name:	us-gaap_GainLossOnSaleOfBusiness
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Other Non-Operating Income (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Non-Operating Income [Line Items]
Net gain on sale of businesses			$ 15,618	$ 22,679	$ 3,789
Pinna [Member]
Schedule of Non-Operating Income [Line Items]
Net gain on sale of businesses	$ 10,000
CyberVista [Member]
Schedule of Non-Operating Income [Line Items]
Net gain on sale of businesses		$ 18,400
Education [Member] \| Higher Education [Member] \| Kaplan University Transaction [Member]
Schedule of Non-Operating Income [Line Items]
Gain related to contingent consideration			$ 5,600	$ 4,300	$ 3,900