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Convertible Preferred Stock And Stockholders' Deficit - Summary of Convertible preferred stock (Detail) - USD ($) $ / shares in Units, $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Temporary Equity [Line Items] |  |  |
Shares Issued and Outstanding | 34,693,585 | 33,657,472 |
Groop Internet Platform Inc [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Net Carrying Value | $ 111,282 | $ 111,282 | $ 111,282
Seed [Member] | Groop Internet Platform Inc [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Issue Price | $ 0.3275 | $ 0.3275 | $ 0.3275
Shares Authorized | 3,435,000 | 3,435,000 | 3,435,000
Shares Issued and Outstanding | 3,434,999 | 3,434,999 | 3,434,999
Net Carrying Value | $ 1,112 | $ 1,112 | $ 1,112
Aggregate Liquidation Preference | $ 1,125 | $ 1,125 | $ 1,125
Seed-1 [Member] | Groop Internet Platform Inc [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Issue Price | $ 0.3036 | $ 0.3036 | $ 0.3036
Shares Authorized | 7,812,250 | 7,812,250 | 7,812,250
Shares Issued and Outstanding | 7,812,248 | 7,812,248 | 7,812,248
Net Carrying Value | $ 2,340 | $ 2,340 | $ 2,340
Aggregate Liquidation Preference | $ 2,372 | $ 2,372 | $ 2,372
Seed-2 [Member] | Groop Internet Platform Inc [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Issue Price | $ 0.3624 | $ 0.3624 | $ 0.3624
Shares Authorized | 3,311,260 | 3,311,260 | 3,311,260
Shares Issued and Outstanding | 3,311,260 | 3,311,260 | 3,311,260
Net Carrying Value | $ 1,150 | $ 1,150 | $ 1,150
Aggregate Liquidation Preference | $ 1,200 | $ 1,200 | $ 1,200
Series A [Member] | Groop Internet Platform Inc [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Issue Price | $ 0.5842 | $ 0.5842 | $ 0.5842
Shares Authorized | 16,014,920 | 16,014,920 | 16,014,920
Shares Issued and Outstanding | 16,014,920 | 16,014,920 | 16,014,920
Net Carrying Value | $ 9,316 | $ 9,316 | $ 9,316
Aggregate Liquidation Preference | $ 9,356 | $ 9,356 | $ 9,356
Series B [Member] | Groop Internet Platform Inc [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Issue Price | $ 1.0413 | $ 1.0413 | $ 1.0413
Shares Authorized | 14,741,184 | 14,741,184 | 14,741,184
Shares Issued and Outstanding | 14,405,065 | 14,405,065 | 14,405,065
Net Carrying Value | $ 14,934 | $ 14,934 | $ 14,934
Aggregate Liquidation Preference | $ 15,000 | $ 15,000 | $ 15,000
Series C [Member] | Groop Internet Platform Inc [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Issue Price | $ 1.5839 | $ 1.5839 | $ 1.5839
Shares Authorized | 19,761,349 | 19,761,349 | 19,761,349
Shares Issued and Outstanding | 19,761,349 | 19,761,349 | 19,761,349
Net Carrying Value | $ 31,226 | $ 31,226 | $ 31,226
Aggregate Liquidation Preference | $ 31,300 | $ 31,300 | $ 31,300
Series D [Member] | Groop Internet Platform Inc [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Issue Price | $ 2.7515 | $ 2.7515 | $ 2.7515
Shares Authorized | 19,313,201 | 19,313,201 | 19,313,201
Shares Issued and Outstanding | 18,655,974 | 18,655,974 | 18,655,974
Net Carrying Value | $ 51,204 | $ 51,204 | $ 51,204
Aggregate Liquidation Preference | $ 51,332 | $ 51,332 | $ 51,332
Convertible Preferred Stock [Member] | Groop Internet Platform Inc [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Shares Authorized | 84,389,164 | 84,389,164 | 84,389,164
Shares Issued and Outstanding | 83,395,815 | 83,395,815 | 83,395,815
Net Carrying Value | $ 111,282 | $ 111,282 | $ 111,282
Aggregate Liquidation Preference | $ 111,685 | $ 111,685 | $ 111,685

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