Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues	$ 81,777	$ 77,122	$ 246,542	$ 227,516
Costs and expenses:
Instructional costs and services	28,139	26,436	83,751	80,538
Selling and promotional	15,989	14,430	48,573	43,276
General and administrative	16,766	15,978	51,403	48,191
Depreciation and amortization	3,376	2,760	9,895	8,131
Total costs and expenses	64,270	59,604	193,622	180,136
Income from operations before interest income and income taxes	17,507	17,518	52,920	47,380
Interest income, net	77	30	230	17
Income before income taxes	17,584	17,548	53,150	47,397
Income tax expense	6,612	6,724	20,006	18,249
Equity investment loss, net of taxes	(61)		(107)
Net income	$ 10,911	$ 10,824	$ 33,037	$ 29,148
Net Income per common share:
Basic	$ 0.62	$ 0.61	$ 1.87	$ 1.64
Diluted	$ 0.61	$ 0.60	$ 1.84	$ 1.61
Weighted average number of common shares:
Basic	17,658,317	17,706,088	17,689,055	17,823,508
Diluted	17,876,747	17,950,524	17,942,798	18,103,996