Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows provided by operating activities:
Net income	$ 102,888	$ 88,537
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	7,479	6,622
Depreciation and amortization	13,581	10,939
Amortization of intangible assets	4,210	4,210
Deferred income taxes	266	1,160
Other, including fixed asset disposals	(457)	842
Changes in assets and liabilities:
Accounts receivable from university partners	49,357	52,731
Other assets	(749)	(1,332)
Right-of-use assets and lease liabilities	759	787
Accounts payable	4,986	2,323
Accrued liabilities	8,334	(460)
Income taxes receivable/payable	(14,344)	(18,341)
Deferred revenue	7,216	9,110
Net cash provided by operating activities	183,526	157,128
Cash flows used in investing activities:
Capital expenditures	(17,933)	(17,599)
Additions of amortizable content	(170)	(488)
Purchases of investments	(48,594)	(73,807)
Proceeds from sale or maturity of investments	46,708	43,837
Net cash used in investing activities	(19,989)	(48,057)
Cash flows used in financing activities:
Repurchase of common shares and shares withheld in lieu of income taxes	(68,695)	(86,555)
Net cash used in financing activities	(68,695)	(86,555)
Net increase in cash and cash equivalents and restricted cash	94,842	22,516
Cash and cash equivalents and restricted cash, beginning of period	146,475	120,409
Cash and cash equivalents and restricted cash, end of period	241,317	142,925
Supplemental disclosure of cash flow information
Cash paid for interest	4	26
Cash paid for income taxes	44,220	42,460
Supplemental disclosure of non-cash investing and financing activities
Purchases of property and equipment included in accounts payable	1,713	1,644
ROU Asset and Liability recognition	9,439	3,727
Excise tax on treasury stock repurchases	$ 422	$ 641