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Financial Derivative Instruments (Tables)
9 Months Ended
Sep. 30, 2015
Financial Derivative Instruments [Abstract]  
Schedule of Notional Amounts of Outstanding Derivative Positions
                Unamortized      
      3-Month         Premium at   Fair Value Cumulative
  Notional Termination LIBOR     Premium   September 30,   September 30, Cash Flows
  Amount Date Strike Rate     Paid   2015   2015 Received
 
$ 25,000 06/02/21 3.00 % $ 922 $ 921 $ 327 $ ---
$ 20,000 06/04/24 3.00 % $ 1,470 $ 1,470 $ 688 $ ---
$ 20,000 10/21/21 3.00 % $ 632 $ 632 $ 297 $ ---
$ 25,000 10/21/24 3.00 % $ 1,542 $ 1,542 $ 939 $ ---
Schedule of Interest Rate Derivatives
    September 30, 2015  
    Gross     Net of Tax  
Unrealized losses on interest rate caps $ (2,314 ) $ (1,504 )
Unamortized premium on interest rate caps   4,565     2,967  
Total $ 2,251   $ 1,463  
 
 
 
    December 31, 2014  
    Gross     Net of Tax  
Unrealized losses on interest rate caps $ (1,111 ) $ (722 )
Unamortized premium on interest rate caps   4,566     2,968  
Total $ 3,455 $ 2,246