ACCOUNTING POLICIES (Details 8) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings per share
Net income (loss) attributable to stockholders of Overstock.com, Inc.	$ (786)	$ (3,098)	$ (14,188)	$ 9,427
Less: Preferred stock dividends - accumulated	27	0	80	0
Undistributed income (loss)	(813)	(3,098)	(14,268)	9,427
Less: Undistributed loss allocated to participating securities	(22)	0	(386)	0
Net income (loss) attributable to common shares	$ (791)	$ (3,098)	$ (13,882)	$ 9,427
Net income (loss) per common share—basic:
Net income attributable to common shares-basic (in dollars per share)	$ (0.03)	$ (0.12)	$ (0.55)	$ 0.37
Weighted average common shares outstanding-basic	25,003	25,356	25,024	25,326
Effect of dilutive securities:
Stock options and restricted stock awards (in shares)	0	0	0	62
Weighted average common shares outstanding-diluted	25,003	25,356	25,024	25,388
Net income attributable to common shares-diluted (in dollars per share)	$ (0.03)	$ (0.12)	$ (0.55)	$ 0.37
Stock options and restricted stock awards
Anti-dilutive securities excluded from computation of earnings per share
Anti-dilutive securities excluded from computation of earnings per share (in shares)	192	765	165	536