Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income	$ 20,206	$ 23,259
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of gain on sale of assets	(140)	(140)
Amortization of deferred rent	(446)	(424)
Amortization of deferred financing costs	131	390
Depreciation and amortization	8,873	9,292
Deferred income taxes	(2,158)	(1,621)
Stock-based compensation	4,926	4,923
Changes in assets and liabilities:
Tuition receivable, net	245	1,554
Other current assets	(1,466)	2,357
Other assets	(2,639)	2
Accounts payable and accrued expenses	(726)	(2,808)
Income taxes payable and income taxes receivable	(3,314)	3,387
Deferred revenue	3,313	5,544
Other long-term liabilities	(4,380)	(1,959)
Net cash provided by operating activities	22,425	43,756
Cash flows from investing activities:
Purchases of property and equipment	(3,852)	(7,057)
Cash used in acquisition, net of cash acquired	(7,635)
Net cash used in investing activities	(11,487)	(7,057)
Cash flows from financing activities:
Payments on term loan		(3,125)
Payments of contingent consideration	(405)	(300)
Net cash used in financing activities	(405)	(3,425)
Net increase in cash and cash equivalents	10,533	33,274
Cash and cash equivalents - beginning of year	106,889	162,283
Cash and cash equivalents - end of year	117,422	195,557
Non-cash transactions:
Purchases of property and equipment included in accounts payable	274	$ 546
Contingent consideration recorded in connection with an acquisition	$ 8,500