Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 11,500	$ 9,467
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of deferred financing costs	83	66
Amortization of investment discount/premium	127	0
Depreciation and amortization	25,983	5,035
Deferred income taxes	10,834	(1,842)
Stock-based compensation	3,010	2,688
Changes in assets and liabilities:
Tuition receivable, net	4,847	(2,249)
Other current assets	(1,060)	931
Other assets	325	115
Accounts payable and accrued expenses	(3,537)	(867)
Income taxes payable and income taxes receivable	6,031	3,995
Contract liabilities	1,702	1,192
Other long-term liabilities	(1,187)	(1,482)
Net cash provided by operating activities	58,658	17,049
Cash flows from investing activities:
Purchases of property and equipment	(8,756)	(4,233)
Purchases of marketable securities	(6,249)	0
Maturities of marketable securities	12,910	0
Other investments	(374)	0
Net cash used in investing activities	(2,469)	(4,233)
Cash flows from financing activities:
Common dividends paid	(11,091)	(2,889)
Taxes paid for stock awards	(4,443)	0
Net cash used in financing activities	(15,534)	(2,889)
Net increase in cash, cash equivalents, and restricted cash	40,655	9,927
Cash, cash equivalents, and restricted cash — beginning of period	312,237	156,448
Cash, cash equivalents, and restricted cash — end of period	352,892	166,375
Noncash transactions:
Purchases of property and equipment included in accounts payable	$ 634	$ 2,385