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Goodwill and Intangible Assets (Details Textual) (USD $)
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Mar. 31, 2013
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Dec. 31, 2012
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| Goodwill and Intangible Assets (Textual) [Abstract] | ||
| Net of accumulated impairment losses | $ 796,725,000 | |
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Lease Agreements [Member]
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| Goodwill and Intangible Assets (Additional Textual) [Abstract] | ||
| Definite life intangibles | $ 9,500,000 | $ 9,900,000 |
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- Details
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- Details
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- Definition
Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The accumulated impairment losses related to goodwill as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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