Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 88,541	$ 45,976
Restricted cash and cash equivalents	70,342	84,931
Investments	81,557	62,596
Accounts receivable, net	9,026	9,999
Income tax receivable	4,829	4,686
Other current assets	23,627	21,880
Total current assets	277,922	230,068
Property and equipment, net	870,289	855,528
Prepaid royalties	2,985	3,059
Goodwill	2,941	2,941
Other assets	1,123	897
Total assets	1,155,260	1,092,493
Current liabilities
Accounts payable	24,114	24,824
Accrued compensation and benefits	20,670	19,697
Accrued liabilities	23,704	21,283
Income taxes payable	19,531	2,734
Student deposits	70,716	85,881
Deferred revenue	69,759	40,739
Current portion of notes payable	6,651	31,636
Total current liabilities	235,145	226,794
Other noncurrent liabilities	1,606	1,689
Deferred income taxes, noncurrent	27,043	23,708
Notes payable, less current portion	64,943	66,616
Total liabilities	328,737	318,807
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.01 par value, 10,000 shares authorized; 0 shares issued and outstanding at March 31, 2017 and December 31, 2016
Common stock, $0.01 par value, 100,000 shares authorized; 51,939 and 51,509 shares issued and 47,829 and 47,559 shares outstanding at March 31, 2017 and December 31, 2016, respectively	519	515
Treasury stock, at cost, 4,110 and 3,950 shares of common stock at March 31, 2017 and December 31, 2016, respectively	(98,910)	(89,394)
Additional paid-in capital	218,667	212,559
Accumulated other comprehensive loss	(522)	(910)
Retained earnings	706,769	650,916
Total stockholders' equity	826,523	773,686
Total liabilities and stockholders' equity	$ 1,155,260	$ 1,092,493