Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Preferred stock	Preferred stock Series A	Preferred stock Series B	Treasury stock	Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive loss	Parent	Noncontrolling interest
Beginning balance at Dec. 31, 2013						$ (80,230)	$ 361,706	$ (162,718)	$ 0		$ 0
Beginning balance (in shares) at Dec. 31, 2013		26,909		0	0	3,124
Increase (Decrease) in Stockholders' Equity
Rights offering (in shares)				0	0
Rights offering							0
Stock Issued During Period, Shares, Treasury Stock Reissued						0
Stock-based compensation to employees and directors							4,035
Common stock issued upon vesting of restricted stock		302
Exercise of stock options							511
Exercise of stock options (in shares)		30
Net other comprehensive loss	$ (621)								(621)
Purchase of treasury stock						$ (2,301)
Purchase of treasury stock (in shares)						80
Issuance of treasury stock (in shares)						$ 0
Net loss attributable to noncontrolling interests	(53)										(53)
Paid-in capital attributable to noncontrolling interests											35
Net income attributable to stockholders of Overstock.com, Inc.	8,854							8,854
Deficiency in cost of treasury stock issued								0
Ending balance at Dec. 31, 2014	$ 129,220		$ 0			$ (82,531)	366,252	(153,864)	(621)	$ 129,238	(18)
Ending balance (in shares) at Dec. 31, 2014	24,037	27,241		0	0	3,204
Common stock		$ 2
Increase (Decrease) in Stockholders' Equity
Rights offering (in shares)				0	0
Rights offering							0
Stock Issued During Period, Shares, Treasury Stock Reissued						(908)
Stock-based compensation to employees and directors							3,526
Common stock issued upon vesting of restricted stock		377
Exercise of stock options							269
Exercise of stock options (in shares)		16
Net other comprehensive loss	$ (809)								(809)
Purchase of treasury stock						$ (2,367)
Purchase of treasury stock (in shares)						104
Issuance of treasury stock (in shares)						$ 33,151
Net loss attributable to noncontrolling interests	(1,226)										(1,226)
Paid-in capital attributable to noncontrolling interests											152
Net income attributable to stockholders of Overstock.com, Inc.	2,446							2,446
Deficiency in cost of treasury stock issued								(15,002)
Ending balance at Dec. 31, 2015	$ 149,361		0			$ (51,747)	370,047	(166,420)	(1,430)	150,453	(1,092)
Ending balance (in shares) at Dec. 31, 2015	25,234	27,634		0	0	2,400
Common stock	$ 3	$ 3
Increase (Decrease) in Stockholders' Equity
Rights offering (in shares)				127	569
Rights offering							7,591
Stock Issued During Period, Shares, Treasury Stock Reissued						0
Stock-based compensation to employees and directors							4,891
Common stock issued upon vesting of restricted stock		219
Exercise of stock options							819
Exercise of stock options (in shares)		42
Net other comprehensive loss	(110)								(110)
Purchase of treasury stock						$ (840)
Purchase of treasury stock (in shares)						63
Issuance of treasury stock (in shares)						$ 0
Net loss attributable to noncontrolling interests	(1,274)										(1,274)
Paid-in capital attributable to noncontrolling interests											0
Net income attributable to stockholders of Overstock.com, Inc.	12,522							12,522
Deficiency in cost of treasury stock issued								0
Ending balance at Dec. 31, 2016	$ 172,960		$ 0			$ (52,587)	$ 383,348	$ (153,898)	$ (1,540)	$ 175,326	$ (2,366)
Ending balance (in shares) at Dec. 31, 2016	25,432	27,895		127	569	2,463
Common stock	$ 3	$ 3