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Fair Value of Financial Instruments (Details) (Recurring, USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Level 2 | Interest rate cap
   
Fair value information    
Derivative assets   $ 1
Level 2 | Interest rate swaps
   
Fair value information    
Derivative liabilities 2,066 3,080
Total Fair Value | Interest rate cap
   
Fair value information    
Derivative assets   1
Total Fair Value | Interest rate swaps
   
Fair value information    
Derivative liabilities $ 2,066 $ 3,080