Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows provided by operating activities:
Net income	$ 83,640	$ 127,573
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	6,361	5,959
Depreciation and amortization	11,352	10,821
Amortization of intangible assets	4,210	4,210
Deferred income taxes	732	1,837
Other, including fixed asset impairments	631	302
Changes in assets and liabilities:
Accounts receivable and interest receivable from university partners	44,336	47,312
Other assets	(3,171)	(3,975)
Right-of-use assets and lease liabilities	322	237
Accounts payable	(6,285)	6,653
Accrued liabilities	5,568	5,027
Income taxes receivable/payable	(13,555)	(5,387)
Deferred revenue	11,948	9,760
Net cash provided by operating activities	146,089	210,329
Cash flows used in investing activities:
Capital expenditures	(15,136)	(15,757)
Additions of amortizable content	(114)	(271)
Purchases of investments	(91,361)	(51,223)
Funding to GCU		(190,000)
Proceeds from sale or maturity of investments	26,994	17,166
Net cash used in investing activities	(79,617)	(240,085)
Cash flows used in financing activities:
Principal payments on notes payable		(16,572)
Net borrowings from revolving line of credit		35,000
Repurchase of common shares and shares withheld in lieu of income taxes	(528,012)	(167,673)
Net proceeds from exercise of stock options		2,680
Net cash used in financing activities	(528,012)	(146,565)
Net decrease in cash and cash equivalents and restricted cash	(461,540)	(176,321)
Cash and cash equivalents and restricted cash, beginning of period	600,941	245,769
Cash and cash equivalents and restricted cash, end of period	139,401	69,448
Supplemental disclosure of cash flow information
Cash paid for interest	5	1,658
Cash paid for income taxes	38,841	37,132
Supplemental disclosure of non-cash investing and financing activities
Purchases of property and equipment included in accounts payable	1,654	422
ROU Asset and Liability recognition	$ 503	$ 1,717