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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 33,407	$ 80,351
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on sale of marketable securities	781	0
Gain on sale of property and equipment	(681)	0
Amortization of deferred financing costs	414	250
Amortization of investment discount/premium	55	108
Depreciation and amortization	88,188	78,189
Deferred income taxes	(12,197)	(12,867)
Stock-based compensation	12,714	10,759
Impairment of right-of-use lease assets	18,914	453
Changes in assets and liabilities:
Tuition receivable, net	(38,490)	(1,224)
Other assets	(6,106)	(8,684)
Accounts payable and accrued expenses	(253)	681
Income taxes payable and income taxes receivable	4,050	10,674
Contract liabilities	66,022	4,540
Other liabilities	(5,655)	(4,444)
Net cash provided by operating activities	161,163	158,786
Cash flows from investing activities:
Purchases of property and equipment	(33,632)	(34,787)
Purchases of marketable securities	0	(1,863)
Proceeds from marketable securities	9,300	22,868
Proceeds from sale of property and equipment	4,328	0
Other investments	(589)	(768)
Net cash used in investing activities	(20,593)	(14,550)
Cash flows from financing activities:
Net proceeds from issuance of common stock	0	220,248
Common dividends paid	(44,289)	(41,305)
Net payments for stock awards	(2,283)	(24,778)
Repurchase of common stock	(5,905)	(247)
Net cash provided by (used in) financing activities	(52,477)	153,918
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(3,280)	0
Net increase in cash, cash equivalents, and restricted cash	84,813	298,154
Cash, cash equivalents, and restricted cash — beginning of period	202,020	420,497
Cash, cash equivalents, and restricted cash — end of period	286,833	718,651
Noncash transactions:
Non-cash additions to property and equipment	6,849	2,496
Right-of-use lease assets obtained in exchange for operating lease liabilities	$ 46,213	$ 12,427

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