Unaudited Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Revenues	$ 245,110	$ 114,668	$ 491,618	$ 231,137
Costs and expenses:
Instructional and support costs	130,704	69,299	264,754	137,751
General and administration	68,374	32,176	132,513	63,518
Amortization of intangible assets	15,417	0	30,834	0
Merger and integration costs	3,019	2,824	10,198	8,171
Impairment of intangible assets	0	6,185	0	6,185
Total costs and expenses	217,514	110,484	438,299	215,625
Income from operations	27,596	4,184	53,319	15,512
Other income	4,125	447	7,452	736
Income before income taxes	31,721	4,631	60,771	16,248
Provision (benefit) for income taxes	7,312	(557)	24,862	1,593
Net income	$ 24,409	$ 5,188	$ 35,909	$ 14,655
Earnings per share:
Basic (In Dollars per Share)	$ 1.12	$ 0.48	$ 1.66	$ 1.36
Diluted (In Dollars per Share)	$ 1.10	$ 0.46	$ 1.63	$ 1.29
Weighted average shares outstanding:
Basic (In Shares)	21,777	10,879	21,638	10,812
Diluted (In Shares)	22,109	11,380	22,079	11,346
Cash dividend declared per share (in dollars per share)	$ 0.50	$ 0.25	$ 1.00	$ 0.50