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BASIS OF PRESENTATION	9 Months Ended
BASIS OF PRESENTATION	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	1. DESCRIPTION OF BUSINESS Overstock.com, Inc. is an online retailer business and advocate of blockchain technology. As used herein, "Overstock," "the Company," "we," "our" and similar terms include Overstock.com, Inc. and its majority-owned subsidiaries, unless the context indicates otherwise.