Quarterly report pursuant to Section 13 or 15(d)

Interest Rate Derivatives (Details)

v3.2.0.727
Interest Rate Derivatives (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Effect of interest rate derivatives on consolidated statements of operations and comprehensive income          
Amount of gain (loss) recognized in accumulated other comprehensive loss (“AOCL”) (effective portion) $ 392 $ (3,630) $ (3,082) $ (5,753)  
Interest Expense [Member]          
Effect of interest rate derivatives on consolidated statements of operations and comprehensive income          
Amount of losses reclassified from AOCL into interest expense (effective portion) 769 $ 719 1,542 $ 1,414  
Interest rate swaps          
Effect of interest rate derivatives on consolidated statements of operations and comprehensive income          
Approximate loss amount to be reclassified from AOCI to interest expense over the next 12 months 3,300   3,300    
Interest rate derivatives in liability position, fair value 3,100   3,100    
Termination value to settle obligations under interest rate derivative agreements 3,400   3,400    
Interest rate swaps | Prepaid expenses and other current assets          
Fair value of interest rate derivatives and balance sheet classification          
Interest rate derivatives 0   0   $ 274
Interest rate swaps | Interest rate derivatives          
Fair value of interest rate derivatives and balance sheet classification          
Fair value of Interest rate swaps classified as interest rate derivatives (3,121)   (3,121)   (1,855)
Designated          
Fair values of interest rate swap derivatives          
Fair value of interest rate swaps (3,121)   (3,121)   (1,581)
Designated | Interest rate swap, effective date January 3, 2012, swap three          
Fair values of interest rate swap derivatives          
Notional Amount $ 100,000   $ 100,000    
Fixed rate (as a percent) 0.832%   0.832%    
Fair value of interest rate swaps $ (110)   $ (110)   (407)
Designated | Interest rate swap, effective date January 3, 2012, swap four          
Fair values of interest rate swap derivatives          
Notional Amount $ 100,000   $ 100,000    
Fixed rate (as a percent) 0.832%   0.832%    
Fair value of interest rate swaps $ (110)   $ (110)   (407)
Designated | Interest rate swap, effective date November 2, 2010          
Fair values of interest rate swap derivatives          
Notional Amount $ 36,457   $ 36,457    
Fixed rate (as a percent) 3.83%   3.83%    
Fair value of interest rate swaps $ (171)   $ (171)   (400)
Notional amount of interest rate derivatives after scheduled amortization $ 36,200   $ 36,200    
Designated | Interest rate swap, effective date November 2, 2010 | London Interbank Offered Rate (LIBOR)          
Fair values of interest rate swap derivatives          
Derivative, basis spread on variable rate 2.25%   2.25%    
Designated | Interest rate swap, effective date September 2, 2014, swap one          
Fair values of interest rate swap derivatives          
Notional Amount $ 100,000   $ 100,000    
Fixed rate (as a percent) 0.8055%   0.8055%    
Fair value of interest rate swaps $ (405)   $ (405)   (317)
Designated | Interest rate swap, effective date September 2, 2014, swap two          
Fair values of interest rate swap derivatives          
Notional Amount $ 100,000   $ 100,000    
Fixed rate (as a percent) 0.81%   0.81%    
Fair value of interest rate swaps $ (410)   $ (410)   (324)
Designated | Interest rate swap, effective date September 1, 2015, swap one          
Fair values of interest rate swap derivatives          
Notional Amount $ 100,000   $ 100,000    
Fixed rate (as a percent) 1.673%   1.673%    
Fair value of interest rate swaps $ (849)   $ (849)   239
Designated | Interest rate swap, effective date September 1, 2015, swap two          
Fair values of interest rate swap derivatives          
Notional Amount $ 100,000   $ 100,000    
Fixed rate (as a percent) 1.73%   1.73%    
Fair value of interest rate swaps $ (1,066)   $ (1,066)   $ 35