Discontinued Operations - Summary Results of Operations for Discontinued Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	[1]
Discontinued Operations And Disposal Groups [Abstract]
Revenue	$ (20)	$ 4,708	$ 177,791
Operating expenses:
Educational services and facilities	1,211	25,152	139,479
General and administrative	910	13,282	83,096
Depreciation and amortization	0	2,073	10,913
Asset impairment	0	68	1,044
Total operating expenses	2,121	40,575	234,532
Pretax (loss) income	(2,128)	(35,601)	73,493
Income tax (benefit) provision	(997)	0	68,477
(Loss) income from discontinued operations, net of tax	$ (1,131)	$ (35,601)	$ 5,016
Net (loss) income per diluted share	$ (0.02)	$ (0.53)	$ 0.08
Capital expenditures	$ 0	$ 0	$ 6,128

[1] The income tax expense associated with the gain on sale of our International Segment approximates $87.9 million.