Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 55,824	$ 105,111
Restricted cash and cash equivalents	64,368	55,964
Investments	108,420
Accounts receivable, net	7,217	7,951
Note receivable secured by real estate		27,000
Income taxes receivable	3,599
Deferred income taxes	5,159	5,481
Other current assets	19,116	12,667
Total current assets	263,703	214,174
Property and equipment, net	339,596	269,162
Restricted cash	0	225
Prepaid royalties	4,641	5,299
Goodwill	2,941	2,941
Other assets	5,219	3,122
Total assets	616,100	494,923
Current liabilities
Accounts payable	24,231	14,174
Accrued compensation and benefits	20,093	18,812
Accrued liabilities	14,554	17,467
Income taxes payable	7	8,704
Student deposits	66,772	57,745
Deferred revenue	32,816	28,614
Due to related parties	454	523
Current portion of capital lease obligations	89	87
Current portion of notes payable	6,607	6,601
Total current liabilities	165,623	152,727
Capital lease obligations, less current portion	497	587
Other noncurrent liabilities	6,811	7,405
Deferred income taxes, non-current	11,832	7,045
Notes payable, less current portion	86,493	93,100
Total liabilities	271,256	260,864
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.01 par value, 10,000 shares authorized; 0 shares issued and outstanding at December 31, 2013 and 2012
Common stock, $0.01 par value, 100,000 shares authorized; 48,890 and 47,136 shares issued and 46,045 and 44,716 shares outstanding at December 31, 2013 and 2012, respectively	489	471
Treasury stock, at cost, 2,845 and 2,420 shares of common stock at December 31, 2013 and 2012, respectively	(48,432)	(39,136)
Additional paid-in capital	132,904	102,133
Accumulated other comprehensive income (loss)	358	(223)
Retained earnings	259,525	170,814
Total stockholders' equity	344,844	234,059
Total liabilities and stockholders' equity	$ 616,100	$ 494,923