Annual report pursuant to Section 13 and 15(d)

Computation of Basic and Diluted Net Income (Loss) Per Share Attributable to Gaiam, Inc. Common Shareholders (Detail)

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Computation of Basic and Diluted Net Income (Loss) Per Share Attributable to Gaiam, Inc. Common Shareholders (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
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 $ (12,882) [1] $ (24,872) [1] $ 4,275 [1]
Denominator:      
Weighted average shares for basic net income (loss) per share attributable to Gaiam, Inc. common shareholders 22,703 [1] 23,126 [1] 23,226 [1]
Effect of dilutive securities:      
Weighted average of common stock and stock options     157
Denominators for diluted net income (loss) per share attributable to Gaiam, Inc. common shareholders 22,703 [1] 23,126 [1] 23,383 [1]
Net income (loss) per share attributable to Gaiam, Inc. common shareholders-basic $ (0.57) [1] $ (1.08) [1] $ 0.18 [1]
Net income (loss) per share attributable to Gaiam, Inc. common shareholders-diluted $ (0.57) [1] $ (1.08) [1] $ 0.18 [1]
[1] RSOL was deconsolidated and accounted for as an equity method investment effective December 31, 2011. Consequently, RSOL is reported as an equity method investment for the year ended December 31, 2012 and as a consolidated subsidiary for the years ended December 31, 2011 and 2010.