Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows provided by operating activities:
Net income	$ 175,231	$ 170,441
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	8,715	8,047
Depreciation and amortization	16,401	15,839
Amortization of intangible assets	6,315	6,315
Deferred income taxes	2,333	2,136
Other, including fixed asset impairments	478	344
Changes in assets and liabilities:
Accounts receivable and interest receivable from university partners	(32,815)	(40,112)
Other assets	(2,451)	(6,021)
Right-of-use assets and lease liabilities	445	1,667
Accounts payable	23,487	(50)
Accrued liabilities	13,358	19,627
Income taxes receivable/payable	(5,806)	(8,370)
Deferred revenue	3,204	10,220
Net cash provided by operating activities	208,895	180,083
Cash flows used in investing activities:
Capital expenditures	(21,352)	(22,156)
Additions of amortizable content	(409)	(238)
Purchases of investments	(56,335)
Funding to GCU	(190,000)	(75,000)
Repayment by GCU	190,000	75,000
Proceeds from sale or maturity of investments	66,792	8,653
Net cash used in investing activities	(11,304)	(13,741)
Cash flows (used in) provided by financing activities:
Principal payments on notes payable	(24,859)	(24,858)
Repurchase of common shares including shares withheld in lieu of income taxes	(360,179)	(97,284)
Net proceeds from exercise of stock options	2,680	178
Net cash used in financing activities	(382,358)	(121,964)
Net increase (decrease) in cash and cash equivalents and restricted cash	(184,767)	44,378
Cash and cash equivalents and restricted cash, beginning of period	245,769	122,572
Cash and cash equivalents and restricted cash, end of period	61,002	166,950
Supplemental disclosure of cash flow information
Cash paid for interest	2,399	3,536
Cash paid for income taxes	48,408	54,114
Supplemental disclosure of non-cash investing and financing activities
Purchases of property and equipment included in accounts payable	1,802	1,022
ROU Asset and Liability recognition	$ 3,775	$ 31,173