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Merger with Capella Education Company - Additional Information (Details) $ in Thousands		3 Months Ended		6 Months Ended		11 Months Ended
	Aug. 01, 2018 USD ($) University	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of independent universities | University	2
Goodwill		$ 732,104		$ 732,104		$ 732,104	$ 732,540
Merger costs		3,019	$ 2,824	10,198	$ 8,171
Goodwill measurement period adjustment				436
Capella Merger
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Share conversion ratio of common stock issued	0.875
Goodwill	$ 725,304
Merger costs						20,100
Issuance costs	100
Reduction in deferred tax liabilities				3,400
Reduction in current assets				1,900
Increase in current liabilities				1,000
Increase in noncurrent liabilities				100
Goodwill measurement period adjustment				(400)
Course content and internally developed software including in Property and Equipment	$ 53,182
Amortization period (in years)	3 years
Strayer University
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Goodwill	$ 330,600	337,381		337,381		337,381	337,381
Goodwill measurement period adjustment				0
Capella University
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Goodwill	394,700	$ 394,723		394,723		$ 394,723	$ 395,159
Goodwill measurement period adjustment				$ 436
Relief From Royalty Approach Valuation Technique | Capella Merger
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Course content and internally developed software including in Property and Equipment	14,000
Valuation, Cost Approach | Capella Merger
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Course content and internally developed software including in Property and Equipment	$ 5,000

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