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Balance Sheet Components - Allowance for Credit Losses and Reserve for Subscriber Refunds (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Allowance for doubtful accounts |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Balance at the beginning of the year | $ 1,468 | $ 2,094
Additions — charged to costs and expenses, or contra revenue | 172 | 54
Deductions — recoveries of amounts previously reserved | (133) | (470)
Deductions — write-offs or refunds | (23) | (210)
Balance at end of year | 1,484 | 1,468
Reserve for member refunds |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Balance at the beginning of the year | 1,278 | 5,166
Additions — charged to costs and expenses, or contra revenue | 0 | 15
Deductions — recoveries of amounts previously reserved | (459) | (3,006)
Deductions — write-offs or refunds | (551) | (897)
Balance at end of year | $ 268 | $ 1,278

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- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-4 + Details
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