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Goodwill (Details Textual) (USD $) In Thousands, unless otherwise specified | 12 Months Ended | 3 Months Ended
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2012 Goodwill [Member] | Mar. 31, 2012 Goodwill [Member] | Sep. 30, 2011 Goodwill [Member]
Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill and intangible assets impairment | $ 49,521 | $ 3,277 | $ 0 | $ 13,200 | $ 6,500 | $ 3,300
Goodwill (Textual) [Abstract] |  |  |  |  |  |
Impairments analyses | Sep. 30, 2012 |  |  |  |  |

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- Details
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- Definition Impairments analyses. + References No definition available. + Details
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- Definition Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. + References No definition available. + Details
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- Details
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