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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Income Statement [Abstract] |  |  |  |
Revenue | $ 168,611 | $ 156,898 | $ 329,469 | $ 298,235
Cost of revenue | 40,882 | 40,857 | 81,309 | 78,773
Gross profit | 127,729 | 116,041 | 248,160 | 219,462
Operating expenses |  |  |  |
Research and development | 43,246 | 35,830 | 87,727 | 73,991
Sales and marketing | 59,069 | 63,283 | 124,069 | 120,925
General and administrative | 28,983 | 33,324 | 58,270 | 62,465
Provision for transaction losses | 2,547 | 6,652 | 9,248 | 8,781
Total operating expenses | 133,845 | 139,089 | 279,314 | 266,162
Loss from operations | (6,116) | (23,048) | (31,154) | (46,700)
Interest expense | 713 | 1,120 | 1,814 | 2,245
Other income, net | (4,695) | (375) | (48,796) | (443)
Income (loss) before income taxes | (2,134) | (23,793) | 15,828 | (48,502)
Income tax provision | (1,857) | (27) | (2,652) | (56)
Net income (loss) | $ (3,991) | $ (23,820) | $ 13,176 | $ (48,558)
Net income (loss) per share: |  |  |  |
Basic (in dollars per share) | $ (0.03) | $ (0.18) | $ 0.10 | $ (0.37)
Diluted (in dollars per share) | $ (0.03) | $ (0.18) | $ (0.18) | $ (0.37)
Weighted-average shares used to compute net income (loss) per share |  |  |  |
Basic (in shares) | 134,141,525 | 130,060,694 | 133,492,087 | 129,707,197
Diluted (in shares) | 134,141,525 | 130,060,694 | 135,048,728 | 129,707,197
Other comprehensive income (loss), net of tax: |  |  |  |
Net unrealized holding gain (loss) on marketable securities, net | $ 297 | $ (1,405) | $ 2,220 | $ (4,255)
Total comprehensive income (loss) | $ (3,694) | $ (25,225) | $ 15,396 | $ (52,813)

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-10 + Details
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