Segment Reporting - Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues
Revenues	$ 239,026	$ 241,747	$ 760,159	$ 733,365
Income from operations
Income from operations	15,422	20,000	105,776	73,319
Amortization of intangible assets	(15,417)	(15,417)	(46,251)	(46,251)
Merger and integration costs	(2,920)	(1,500)	(7,858)	(11,698)
Restructuring costs	(4,024)	0	(4,024)	0
Strayer University
Revenues
Revenues	128,411	129,993	412,145	392,466
Income from operations
Income from operations	22,809	17,993	95,225	66,229
Capella University
Revenues
Revenues	110,615	111,754	348,014	340,899
Income from operations
Income from operations	$ 14,974	$ 18,924	$ 68,684	$ 65,039