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Equity (Details Textual) (USD $) | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2012 | Dec. 31, 2011 | Dec. 16, 2011
Equity (Textual) [Abstract] |  |  |
Foreign currency translation net of tax | $ 3,000 |  |
Equity (Additional Textual) [Abstract] |  |  |
Acquisition of a noncontrolling interest, including related taxes | 16,000 |  |
Percentage of ownership by parent in subsidiary | 51.40% |  |
Dividend paid from additional paid in capital | 700,000 |  |
Decrease in Gaiam, Inc.'s paid-in capital for its subsidiary's acquisition of a noncontrolling interest, including related taxes of $16 | (163,000) |  |
Fair market value of common stock |  |  | 21,600,000
Percentage of equity interest in Alteris |  | 100.00% |
Dividend paid from retained earnings | 500,000 |  |
Long-Term Incentive Plan 2009 [Member] |  |  |
Equity (Textual) [Abstract] |  |  |
Issuance of Class A common shares to independent directors, in lieu of cash compensation for services | 13,791 |  |
Alteris [Member] |  |  |
Equity (Textual) [Abstract] |  |  |
Issuance of Class A common shares to acquire Alteris |  | 8,700,000 |
Paid-in Capital [Member] |  |  |
Equity (Additional Textual) [Abstract] |  |  |
Decrease in Gaiam, Inc.'s paid-in capital for its subsidiary's acquisition of a noncontrolling interest, including related taxes of $16 | (170,000) |  |
Noncontrolling Interest [Member] |  |  |
Equity (Additional Textual) [Abstract] |  |  |
Decrease in Gaiam, Inc.'s paid-in capital for its subsidiary's acquisition of a noncontrolling interest, including related taxes of $16 | $ 7,000 |  |

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- Definition This item represents the aggregate value of each identified investment accounted for under the equity method of accounting based on the quoted market price for those investments in common stock for which a quoted market price is available. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 20 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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