| 
           Consolidated Statements of Cash Flows (Parenthetical) (USD $) 
        In Thousands, unless otherwise specified  | 
        
           Dec. 31, 2010 
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|---|---|
| Consolidated Statements Of Cash Flows | |
| Junior subordinated notes | $ 52,094 | 
| X | ||||||||||
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- Details 
          
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| X | ||||||||||
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- Definition 
          Principal amount of junior subordinated notes exchanged. No definition available. 
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