Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Merger with Capella Education Company - Intangible Assets Acquired (Details) - USD ($) $ in Thousands		3 Months Ended
	Aug. 01, 2018	Mar. 31, 2019
Student relationships
Business Acquisition [Line Items]
Weighted Average Useful Life in Years		3 years
Capella Merger
Business Acquisition [Line Items]
Total intangible assets	$ 349,800
Capella Merger \| Student relationships
Business Acquisition [Line Items]
Finite-lived intangible assets, fair value	$ 166,000
Weighted Average Useful Life in Years	3 years
Capella Merger \| Trade names
Business Acquisition [Line Items]
Indefinite lived intangible assets, fair value	$ 183,800