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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash flows provided by operating activities: |  |  |
Net income | $ 204,985 | $ 184,675 | $ 260,344
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Share-based compensation | 13,204 | 12,642 | 11,526
Reversal of credit loss reserve |  |  | (5,000)
Depreciation and amortization | 23,554 | 22,758 | 21,994
Amortization of intangible assets | 8,419 | 8,419 | 8,419
Deferred income taxes | 402 | 401 | 5,674
Other, including fixed asset disposals | (442) | 853 | 677
Changes in assets and liabilities: |  |  |
Accounts receivable from university partners | (1,398) | (7,350) | (2,863)
Other assets | (1,639) | (2,604) | (256)
Right-of-use assets and lease liabilities | 2,105 | 1,193 | 545
Accounts payable | (3,109) | (3,894) | 7,392
Accrued liabilities | (1,974) | (1,023) | 4,148
Income taxes receivable/payable | (445) | 4,759 | 509
Deferred revenue |  | (10) | 10
Net cash provided by operating activities | 243,662 | 220,819 | 313,119
Cash flows used in investing activities: |  |  |
Capital expenditures | (44,537) | (35,232) | (28,875)
Additions of amortizable content | (897) | (397) | (515)
Funding to GCU |  |  | (190,000)
Repayment by GCU |  |  | 1,159,912
Purchases of investments | (98,853) | (171,549) | (56,335)
Proceeds from sale or maturity of investments | 63,815 | 110,039 | 66,792
Net cash used in investing activities | (80,472) | (97,139) | 950,979
Cash flows used in financing activities: |  |  |
Principal payments on notes payable |  |  | (107,774)
Repurchase of common shares and shares withheld in lieu of income taxes | (137,124) | (604,212) | (803,832)
Net proceeds from exercise of stock options |  |  | 2,680
Net cash used in financing activities | (137,124) | (604,212) | (908,926)
Net increase (decrease) in cash and cash equivalents and restricted cash | 26,066 | (480,532) | 355,172
Cash and cash equivalents and restricted cash, beginning of period | 120,409 | 600,941 | 245,769
Cash and cash equivalents and restricted cash, end of period | 146,475 | 120,409 | 600,941
Supplemental disclosure of cash flow information |  |  |
Cash paid for interest | 33 | 2 | 3,697
Cash paid for income taxes | 59,026 | 48,573 | 61,900
Supplemental disclosure of non-cash investing and financing activities |  |  |
Purchases of property and equipment included in accounts payable | 1,909 | 1,131 | 1,536
ROU Asset and Liability recognition | 19,735 | $ 15,067 | $ 3,368
Excise tax on treasury stock repurchases | $ 1,146 |  |

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