Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Revenue	$ 75,688	$ 83,966
Costs and expenses:
Instructional costs and services	28,956	29,708
Selling and promotional	15,435	16,469
General and administrative	17,756	16,669
Loss on disposals of long-lived assets	490	261
Depreciation and amortization	4,744	4,889
Total costs and expenses	67,381	67,996
Income from continuing operations before interest income and income taxes	8,307	15,970
Interest income	11	37
Income from continuing operations before income taxes	8,318	16,007
Income tax expense	3,849	6,267
Equity investment income	40	600
Net income	$ 4,509	$ 10,340
Net Income per common share:
Basic (in dollars per share)	$ 0.28	$ 0.64
Diluted (in dollars per share)	$ 0.28	$ 0.64
Weighted average number of common shares:
Basic (in shares)	16,190,061	16,038,243
Diluted (in shares)	16,320,858	16,171,424