Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities
Net income	$ 24,155	$ 32,414	$ 40,877
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	19,384	20,520	16,121
Stock-based compensation	5,211	5,912	5,369
Investment loss/(income)	(703)	(90)	166
Deferred income taxes	(455)	(160)	2,494
Loss on disposal of long-lived assets	5,147	817	115
Loss on assets held for sale	823	0	0
Impairment of goodwill	4,735	0	0
Other	329	66	90
Changes in operating assets and liabilities:
Accounts receivable, net of allowance for bad debt	968	(1,787)	3,390
Prepaid expenses and other assets	997	64	(512)
Income tax receivable	0	2,029	1,186
Accounts payable	589	(4,765)	(534)
Accrued liabilities	(424)	56	(6,708)
Income tax payable	(123)	682	0
Deferred revenue and student deposits	(4,619)	1,453	(1,024)
Net cash provided by operating activities	56,014	57,211	61,030
Investing activities
Capital expenditures	(13,826)	(26,002)	(24,596)
Proceeds from sale of real property	844	0	0
Equity investment	(950)	(3,871)	(1,620)
Dividend received from equity investment	2,957	0	0
Notes receivable	0	(199)	6,000
Capitalized program development costs and other assets	(2,573)	(1,265)	(1,075)
Net cash used in investing activities	(13,548)	(31,337)	(21,291)
Financing activities
Cash paid for repurchase of common/restricted stock	(847)	(35,310)	(19,711)
Cash received from issuance of common stock	118	55	536
Excess tax benefit/(expense) from stock-based compensation	(1,120)	(519)	250
Net cash used in financing activities	(1,849)	(35,774)	(18,925)
Net increase (decrease) in cash and cash equivalents	40,617	(9,900)	20,814
Cash and cash equivalents at beginning of period	105,734	115,634	94,820
Cash and cash equivalents at end of period	146,351	105,734	115,634
Supplemental disclosures of cash flow information
Income taxes paid	$ 16,637	$ 18,037	$ 21,631