Net Loss Per Share Attributable to Gaiam, Inc. Common Shareholders - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Common stock shares excluded from computation of dilutive earnings per share	659,000	1,544,000	762,000	1,531,000