Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Revenue	$ 73,803	$ 76,291	$ 234,514	$ 241,998
Costs and expenses:
Instructional costs and services	28,357	29,167	86,968	89,123
Selling and promotional	13,139	14,062	44,592	47,233
General and administrative	17,125	17,616	50,703	54,845
Loss on disposals of long-lived assets	4,323	43	5,048	60
Loss on assets held for sale	822	0	822	0
Impairment of goodwill	4,735	0	4,735	0
Depreciation and amortization	4,910	4,891	14,624	14,178
Total costs and expenses	73,411	65,779	207,492	205,439
Income from operations before interest income and income taxes	392	10,512	27,022	36,559
Interest income	37	37	111	78
Income before income taxes	429	10,549	27,133	36,637
Income tax expense	85	3,796	10,524	13,994
Equity investment income/(loss)	(18)	4	653	(20)
Net income	$ 326	$ 6,757	$ 17,262	$ 22,623
Net Income per common share:
Basic (in dollars per share)	$ 0.02	$ 0.41	$ 1.07	$ 1.34
Diluted (in dollars per share)	$ 0.02	$ 0.41	$ 1.07	$ 1.33
Weighted average number of common shares:
Basic (in shares)	16,074,701	16,562,177	16,057,710	16,843,587
Diluted (in shares)	16,233,229	16,661,795	16,174,723	16,974,042