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Segment Reporting - Schedule of Non-cash items (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Non cash items included in segment income (loss) from operations by reportable segment
Depreciation and amortization	$ 12,003	$ 11,158	$ 23,198	$ 22,227
Restructuring costs	653	0	771	0
Restructuring costs	41	69	148	205
Stock-based compensation	5,856	6,573	11,327	11,902
U.S. Higher Education
Non cash items included in segment income (loss) from operations by reportable segment
Depreciation and amortization	7,625	7,798	15,250	15,626
Stock-based compensation	4,655	5,109	9,035	9,019
Australia / New Zealand
Non cash items included in segment income (loss) from operations by reportable segment
Depreciation and amortization	2,486	2,563	4,824	5,009
Stock-based compensation	407	916	762	1,810
Education Technology Services
Non cash items included in segment income (loss) from operations by reportable segment
Depreciation and amortization	1,239	797	2,353	1,592
Stock-based compensation	$ 753	$ 479	$ 1,382	$ 868

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+ References

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

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-1

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Amount of noncash expense for share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section 45
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