Segment Reporting - Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues
Revenues	$ 255,831	$ 245,110	$ 521,133	$ 491,618
Income from operations
Income from operations	46,395	27,596	90,354	53,319
Amortization of intangible assets	(15,417)	(15,417)	(30,834)	(30,834)
Merger and integration costs	(1,174)	(3,019)	(4,938)	(10,198)
Strayer University
Revenues
Revenues	138,080	131,728	283,734	262,474
Income from operations
Income from operations	35,813	24,433	72,416	48,236
Capella University
Revenues
Revenues	117,751	113,382	237,399	229,144
Income from operations
Income from operations	$ 27,173	$ 21,599	$ 53,710	$ 46,115