DISCONTINUED OPERATIONS - Schedule of Discontiued Operations (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Apr. 23, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deconsolidation, Gain (Loss), Amount	$ 243,500
Net income (loss) from discontinued operations		$ 227,372	$ (13,458)	$ 217,246	$ (19,257)
Less: Net loss attributable to noncontrolling interests from discontinued operations		(134)	(1,975)	(335)	(5,207)
Net income (loss) from discontinued operations attributable to stockholders of Overstock.com, Inc.		227,506	(11,483)	217,581	(14,050)
Cash and cash equivalents		0		0		$ 21,075
Other current assets		0		0		13,054
Total current assets of discontinued operations		0		0		34,129
Property and equipment, net		0		0		8,783
Intangible assets, net		0		0		13,852
Goodwill		0		0		28,790
Equity securities		0		0		45,878
Operating lease right-of-use assets		0		0		7,226
Other long-term assets, net		0		0		1,626
Total long-term assets of discontinued operations		0		0		106,155
Accounts payable and accrued liabilities		0		0		11,939
Other current liabilities		0		0		1,985
Total current liabilities of discontinued operations		0		0		13,924
Operating lease liabilities, non-current		0		0		7,099
Other long-term liabilities		0		0		586
Total long-term liabilities of discontinued operations		0		0		$ 7,685
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue, net		1,802	15,588	17,394	27,563
Cost of goods sold		1,325	13,618	13,716	23,959
Gross profit		477	1,970	3,678	3,604
Technology		577	4,615	7,133	10,130
Selling, general, and administrative		2,084	7,109	13,509	16,067
Total operating expenses		2,661	11,724	20,642	26,197
Operating loss from discontinued operations		(2,184)	(9,754)	(16,964)	(22,593)
Interest income, net		5	390	192	473
Other income (loss), net		(398)	(4,417)
Other income (loss), net				4,081	2,553
Deconsolidation, Gain (Loss), Amount		243,541	0	243,541	0
Income (loss) from discontinued operations before income taxes		240,964	(13,781)	230,850	(19,567)
Provision (benefit) for income taxes		13,592	(323)	13,604	(310)
Net income (loss) from discontinued operations		227,372	(13,458)	217,246	(19,257)
Less: Net loss attributable to noncontrolling interests from discontinued operations		(134)	(1,975)	(335)	(5,207)
Net income (loss) from discontinued operations attributable to stockholders of Overstock.com, Inc.		$ 227,506	$ (11,483)	$ 217,581	$ (14,050)