| 
           Non-controlling Interests (Summary of the impact of the consolidated VIE) (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        
           Jun. 30, 2012 
         | 
      
|---|---|
| Variable Interest Entity [Line Items] | |
| Variable Interest Entity, Classification of Carrying Amount, Assets | $ 16,546 | 
| Variable Interest Entity, Classification of Carrying Amount, Liabilities and Equity | 16,546 | 
| 
           Restricted Cash [Member] 
         | 
        |
| Variable Interest Entity [Line Items] | |
| Variable Interest Entity, Classification of Carrying Amount, Assets | 14,804 | 
| 
           Construction in Progress [Member] 
         | 
        |
| Variable Interest Entity [Line Items] | |
| Variable Interest Entity, Classification of Carrying Amount, Assets | 1,742 | 
| 
           Noncontrolling Interest [Member] 
         | 
        |
| Variable Interest Entity [Line Items] | |
| Variable Interest Entity, Classification of Carrying Amount, Liabilities and Equity | 15,954 | 
| 
           Retained Earnings [Member] 
         | 
        |
| Variable Interest Entity [Line Items] | |
| Variable Interest Entity, Classification of Carrying Amount, Liabilities and Equity | $ 592 | 
| X | ||||||||||
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- Definition 
          The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The net carrying amount of the consolidated Variable Interest Entity's assets and liabilities included in the reporting entity's statement of financial position. No definition available. 
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- Details 
          
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