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Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Operating Activities |  |  |
Consolidated net income | $ 22,053,000 | $ 78,954,000 | $ 110,373,000
Adjustments to reconcile consolidated net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 48,474,000 | 45,334,000 | 40,476,000
Gain on sale of property and equipment | (460,000) |  |
Currency (gain) loss on foreign denominated transactions | (283,000) | 155,000 | (70,000)
Other non-cash expense, net | 88,000 |  |
Deferred taxes | (37,864,000) | (22,114,000) | 6,163,000
Provision for doubtful accounts | 378,000 | 1,769,000 | 999,000
Stock-based compensation expense | 63,737,000 | 54,777,000 | 53,525,000
Amortization of deferred financing costs | 515,000 | 136,000 | 0
Amortization of deferred contract costs | 11,817,000 | 11,067,000 | 12,653,000
Impairment of long-lived assets | 184,000 | 165,000 | 3,128,000
Changes in operating assets and liabilities: |  |  |
Accounts receivable | 10,975,000 | 152,954,000 | (174,771,000)
Inventory | 1,958,000 | 14,374,000 | (17,318,000)
Prepaid expenses, prepaid income taxes, and other assets | (1,498,000) | (6,573,000) | (5,068,000)
Deferred contract costs | (18,440,000) | (13,697,000) | (7,714,000)
Accounts payable | 2,080,000 | (35,047,000) | 35,397,000
Accrued expenses, accrued income taxes, and other liabilities | (3,419,000) | (25,077,000) | 35,817,000
Deferred revenue | 9,067,000 | (525,000) | 3,661,000
Lease obligations | 15,165,000 | (546,000) | 1,041,000
Net cash provided by operating activities | 124,527,000 | 256,106,000 | 98,292,000
Investing Activities |  |  |
Purchases of property and equipment | (24,563,000) | (5,924,000) | (7,713,000)
Proceeds from sale of property and equipment | 460,000 |  |
Capitalization of website development costs | (16,648,000) | (11,346,000) | (6,163,000)
Cash paid for acquisitions, net of cash acquired |  |  | (64,273,000)
Purchases of short-term investments | (98,016,000) |  | (120,000,000)
Maturities of short-term investments |  | 90,000,000 | 130,000,000
Sale of short-term investments | 77,462,000 |  |
Advance payments to customers, net of collections | (259,000) |  |
Net cash (used in) provided by investing activities | (61,564,000) | 72,730,000 | (68,149,000)
Financing Activities |  |  |
Proceeds from issuance of common stock upon exercise of stock options | 74,000 | 721,000 | 663,000
Payment of finance lease obligations | (70,000) | (68,000) | (39,000)
Payment of withholding taxes on net share settlements of restricted stock units | (15,597,000) | (16,022,000) | (15,388,000)
Repurchase of common stock | (208,524,000) | (14,428,000) |
Repayment of line of credit |  |  | (14,250,000)
Payment of deferred financing costs |  | (2,578,000) |
Payment of tax distributions to redeemable noncontrolling interest holders | (38,000) | (19,913,000) |
Acquisition of remaining interest in CarOffer, LLC | (25,014,000) |  |
Change in gross advance payments received from third-party transaction processor | (4,475,000) | (40,332,000) | 46,822,000
Net cash (used in) provided by financing activities | (253,644,000) | (92,620,000) | 17,808,000
Impact of foreign currency on cash, cash equivalents, and restricted cash | 475,000 | (364,000) | (597,000)
Net (decrease) increase in cash, cash equivalents, and restricted cash | (190,206,000) | 235,852,000 | 47,354,000
Cash, cash equivalents, and restricted cash at beginning of period | 484,132,000 | 248,280,000 | 200,926,000
Cash, cash equivalents, and restricted cash at end of period | 293,926,000 | 484,132,000 | 248,280,000
Supplemental disclosure of cash flow information: |  |  |
Cash paid for income taxes | 74,783,000 | 61,001,000 | 27,520,000
Cash paid for operating lease liabilities | 19,504,000 | 17,548,000 | 16,168,000
Cash paid for interest | 566,000 | 64,000 |
Supplemental noncash disclosure of cash flow information: |  |  |
Unpaid purchases of property and equipment, capitalized website development, capitalized internal-use software and capitalized hosting arrangements | 18,149,000 | 1,927,000 | 478,000
Unpaid repurchases of common stock |  | 4,289,000 |
Unpaid excise tax on repurchases of shares | 1,584,000 |  |
Capitalized stock-based compensation expense in website development and internal-use software costs and hosting arrangements | 5,472,000 | 4,468,000 | 3,247,000
Obtaining a right-of-use asset in exchange for a finance lease liability |  |  | 664,000
Obtaining a right-of-use asset in exchange for an operating lease liability | $ 149,185,000 | 9,845,000 | 12,336,000
Issuance of stock for acquisition |  |  | 103,645,000
Accretion of redeemable noncontrolling interest to redemption value |  | (109,398,000) | 109,398,000
Accrued tax distributions to redeemable noncontrolling interest holders |  | $ 16,000 | $ 8,701,000

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