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Acquisitions (Tables) - OnCourse Learning [Member] | 12 Months Ended
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Jun. 30, 2021
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed | The following table summarizes the fair values of the assets acquired and liabilities assumed at the date of acquisition (in thousands): ​
​ | ​ | ​ | ​
​ | ​ | May 31,
​ | ​ | 2019
Current assets | ​ | $ | 5,260
Property and equipment | ​ |  | 1,197
Intangible assets | ​ |  | 63,100
Goodwill | ​ |  | 59,427
Total assets acquired | ​ |  | 128,984
Liabilities assumed | ​ |  | 9,445
Net assets acquired | ​ | $ | 119,539
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | May 31, 2019
​ | ​ | Value | ​ | Estimated
​ | ​ | Assigned | ​ | Useful Life
Customer relationships | ​ | $ | 26,400 | ​ | 11 years
Curriculum |  | ​ | 11,600 |  | 6 years
Course delivery technology |  | ​ | 6,700 |  | 5 years

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- Definition Tabular disclosure of finite-lived intangible assets acquired as part of a business combination or through an asset purchase, by major class and in total, including the value of the asset acquired, any significant residual value (the expected value of the asset at the end of its useful life) and the weighted-average amortization period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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