Computation of Basic and Diluted Net Loss Per Share Attributable to Gaiam, Inc. Common Shareholders (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule Of Computation Of Basic And Diluted Earnings Per Common Share [Line Items]
Numerator for basic and diluted net income (loss) per share attributable to Gaiam, Inc. common shareholders	$ 120	$ (11,157)	$ 7,692	$ (14,429)
Denominator:
Weighted average shares for basic net income (loss) per share attributable to Gaiam, Inc. common shareholders	22,751	22,704	22,741	22,702
Effect of dilutive securities:
Weighted average of common stock and stock options	14
Denominators for diluted net income (loss) per share attributable to Gaiam, Inc. common shareholders	22,765	22,704	22,741	22,702
Net income (loss) per share attributable to Gaiam, Inc. common shareholders - basic	$ 0.01	$ (0.49)	$ 0.34	$ (0.64)
Net income (loss) per share attributable to Gaiam, Inc. common shareholders - diluted	$ 0.01	$ (0.49)	$ 0.34	$ (0.64)