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Equity (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Summary of changes in the components of equity |  |  |  |
Balance, December 31, 2012 |  |  | $ 118,097 |
Accrued dividends on preferred stock |  |  | (615) |
Repurchases of Class B common stock from employees |  |  | (270) | (133)
Exercise of stock options |  |  | 53 | 5
Issuance of common stock to subsidiary deferred stock unit holders |  |  |  |
Grants of equity of subsidiaries |  |  |  |
Stock-based compensation |  |  | 2,931 |
Comprehensive (loss) income: |  |  |  |
Net (loss) income | 2,042 | (1,084) | (4,223) | (3,595)
Other comprehensive income (loss) | 235 | 112 | 336 | 45
Comprehensive (loss) income | 2,277 | (972) | (3,887) | (3,550)
Balance, September 30, 2013 | 116,309 |  | 116,309 |
Attributable to Genie [Member] |  |  |  |
Summary of changes in the components of equity |  |  |  |
Balance, December 31, 2012 |  |  | 122,490 |
Accrued dividends on preferred stock |  |  | (615) |
Repurchases of Class B common stock from employees |  |  | (270) |
Exercise of stock options |  |  | 53 |
Issuance of common stock to subsidiary deferred stock unit holders |  |  | 1,837 |
Grants of equity of subsidiaries |  |  | 357 |
Stock-based compensation |  |  | 2,931 |
Comprehensive (loss) income: |  |  |  |
Net (loss) income |  |  | (5,420) |
Other comprehensive income (loss) |  |  | 349 |
Comprehensive (loss) income |  |  | (5,071) |
Balance, September 30, 2013 | 121,712 |  | 121,712 |
Noncontrolling Interests [Member] |  |  |  |
Summary of changes in the components of equity |  |  |  |
Balance, December 31, 2012 |  |  | (4,393) |
Accrued dividends on preferred stock |  |  |  |
Repurchases of Class B common stock from employees |  |  |  |
Exercise of stock options |  |  |  |
Issuance of common stock to subsidiary deferred stock unit holders |  |  | (1,837) |
Grants of equity of subsidiaries |  |  | (357) |
Stock-based compensation |  |  |  |
Comprehensive (loss) income: |  |  |  |
Net (loss) income |  |  | 1,197 |
Other comprehensive income (loss) |  |  | (13) |
Comprehensive (loss) income |  |  | 1,184 |
Balance, September 30, 2013 | $ (5,403) |  | $ (5,403) |

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