Annual report pursuant to Section 13 and 15(d)

Quarterly Financial Data (Detail)

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Quarterly Financial Data (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended 3 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Real Goods Solar Deconsolidated
Sep. 30, 2012
Real Goods Solar Deconsolidated
Jun. 30, 2012
Real Goods Solar Deconsolidated
Mar. 31, 2012
Real Goods Solar Deconsolidated
Dec. 31, 2011
Real Goods Solar Deconsolidated
Sep. 30, 2011
Real Goods Solar Deconsolidated
Jun. 30, 2011
Real Goods Solar Deconsolidated
Mar. 31, 2011
Real Goods Solar Deconsolidated
Dec. 31, 2011
Real Goods Solar Consolidated
Sep. 30, 2011
Real Goods Solar Consolidated
Jun. 30, 2011
Real Goods Solar Consolidated
Mar. 31, 2011
Real Goods Solar Consolidated
Quarterly Financial Data [Line Items]                              
Net revenue $ 202,475 [1] $ 274,773 [1] $ 274,268 [1] $ 66,713 $ 42,983 [2] $ 45,446 $ 47,333 $ 55,627 [3] $ 41,747 $ 30,755 $ 37,387 $ 95,919 [3] $ 73,333 $ 50,709 $ 54,812
Gross profit 116,104 [1] 116,861 [1] 135,830 [1] 36,916 24,071 [2] 28,011 27,106 26,867 [3] 24,061 17,242 20,831 36,485 [3] 31,914 22,602 25,860
Loss from equity method investment (18,410) [1]     (830) (15,940) [2] (944) (696)                
Income (loss) before income taxes and noncontrolling interests (18,252) [1] (35,927) [1] 7,435 [1] 3,019 (16,303) [2] (3,033) (1,935) (21,151) [3] (1,095) (5,821) (1,563) (25,650) [3] (1,655) (7,113) (1,509)
Net income (loss) (12,577) [1] (25,270) [1] 5,069 [1] 1,756 (10,926) [2] (2,109) (1,298) (20,834) [3] (890) (3,994) (964) (18,162) [3] (1,189) (4,978) (941)
Net income (loss) attributable to Gaiam, Inc. $ 305 [1] $ (398) [1] $ 794 [1] $ 1,547 $ (11,157) [2] $ (2,053) $ (1,219) $ (21,120) [3] $ (1,142) $ (3,868) $ (1,006) $ (18,502) [3] $ (1,229) $ (4,141) $ (1,000)
Diluted net income (loss) per share attributable to Gaiam, Inc. common shareholders $ (0.57) [1] $ (1.08) [1] $ 0.18 [1] $ 0.07 $ (0.49) [2] $ (0.09) $ (0.05) $ (0.93) [3] $ (0.05) $ (0.17) $ (0.04) $ (0.82) [3] $ (0.05) $ (0.18) $ (0.04)
Weighted average shares outstanding-diluted 22,703 [1] 23,126 [1] 23,383 [1] 22,706 22,704 [2] 22,702 22,698 22,691 [3] 23,205 23,314 23,301 22,691 [3] 23,205 23,314 23,301
[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.
[2] During the quarter ended September 30, 2012, we recorded a noncash loss from our equity method investment in RSOL of $15.9 million and related income tax benefits of $5.7 million. See Note 3. Equity Method Investment and Receivable From Investee.
[3] During the quarter ended December 31, 2011, we recorded a noncash, goodwill impairment charge of $22.5 million, a noncash loss on deconsolidation of subsidiary of $4.5 million, and an income tax benefit of $7.1 million related to the remeasurement to fair value of our equity method investment in Real Goods Solar. See Notes 3 and 6 to our consolidated financial statements for 2011