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STOCKHOLDERS' EQUITY - JonesTrading Agreements (Details) - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Equity [Abstract] |  |
Proceeds from issuance of common stock | $ 0 | $ 0

X
- Definition Proceeds from Issuance of Common Stock included in Accounts Receivable + References No definition available. + Details
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Namespace Prefix: | ostk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration