Computation of Basic and Diluted Net Loss Per Share Attributable to Gaiam, Inc. Common Shareholders (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net loss attributable to Gaiam, Inc. common shareholders:
Income (loss) from continuing operations	$ 4	$ (2,390)	$ (3,422)	$ (4,550)
(Loss) income from discontinued operations	(1,121)	2	(1,587)	28
Net loss attributable to Gaiam, Inc.	$ (1,117)	$ (2,388)	$ (5,009)	$ (4,522)
Weighted average shares for basic net loss per share	24,511	24,090	24,501	24,048
Effect of dilutive securities	99
Weighted average shares for diluted net loss per share	24,610	24,090	24,501	24,048
Net loss per share attributable to Gaiam, Inc. common shareholders-basic and diluted:
Income (loss) from continuing operations	$ 0.00	$ (0.10)	$ (0.14)	$ (0.19)
(Loss) income from discontinued operations	(0.05)	0.00	(0.06)	0.00
Basic and diluted net loss per share attributable to Gaiam, Inc.	$ (0.05)	$ (0.10)	$ (0.20)	$ (0.19)