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Fair Value Measurements (Details) (Fair value on a recurring basis, USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Fair Value
  
Fair value assets and liabilities measured on recurring basis:  
Marketable equity securities $ 26
Total fair value assets and liabilities measured on recurring basis (6,891)
Fair Value | Interest-rate swap contracts
  
Fair value assets and liabilities measured on recurring basis:  
Derivative assets 1,447
Derivative liabilities (7,580)
Fair Value | Currency Swap [Member]
  
Fair value assets and liabilities measured on recurring basis:  
Derivative assets 484
Derivative liabilities (1,337)
Fair Value | Warrants
  
Fair value assets and liabilities measured on recurring basis:  
Derivative assets 69
Level 1
  
Fair value assets and liabilities measured on recurring basis:  
Marketable equity securities 26
Total fair value assets and liabilities measured on recurring basis 26
Level 2
  
Fair value assets and liabilities measured on recurring basis:  
Total fair value assets and liabilities measured on recurring basis (6,986)
Level 2 | Interest-rate swap contracts
  
Fair value assets and liabilities measured on recurring basis:  
Derivative assets 1,447
Derivative liabilities (7,580)
Level 2 | Currency Swap [Member]
  
Fair value assets and liabilities measured on recurring basis:  
Derivative assets 484
Derivative liabilities (1,337)
Level 3
  
Fair value assets and liabilities measured on recurring basis:  
Total fair value assets and liabilities measured on recurring basis 69
Level 3 | Warrants
  
Fair value assets and liabilities measured on recurring basis:  
Derivative assets $ 69