Quarterly report pursuant to Section 13 or 15(d)

Interest Rate Derivatives (Details)

v3.5.0.2
Interest Rate Derivatives (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
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) $ 407 $ (3,638) $ (16,581) $ (6,720)  
Amount of losses reclassified from AOCL into interest expense (effective portion) 1,043 915 2,763 2,457  
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 5,200   5,200    
Interest rate derivatives in liability position, fair value 17,900   17,900    
Termination value to settle obligations under interest rate derivative agreements 18,400   18,400    
Interest rate swaps | Interest Expense          
Effect of interest rate derivatives on consolidated statements of operations and comprehensive income          
Amount of gain (loss) recognized in interest expense (ineffective portion) 1,523 $ 0 (347) $ 0  
Interest rate swaps | Prepaid expenses and other current assets          
Fair value of interest rate derivatives and balance sheet classification          
Interest rate swaps designated as cash flow hedges 0   0   $ 53
Interest rate swaps | Interest rate derivatives          
Fair value of interest rate derivatives and balance sheet classification          
Interest rate swaps designated as cash flow hedges (17,272)   (17,272)   (3,160)
Designated          
Fair values of interest rate swap derivatives          
Fair value of interest rate swaps (17,272)   (17,272)   (3,107)
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 $ (2,339)   $ (2,339)   (1,217)
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 $ (2,500)   $ (2,500)   (1,429)
Designated | Interest rate swap, effective October 13, 2015          
Fair values of interest rate swap derivatives          
Notional Amount $ 13,676   $ 13,676    
Fixed rate (as a percent) 1.39%   1.39%    
Fair value of interest rate swaps $ (236)   $ (236)   53
Notional amount of interest rate derivatives after scheduled amortization 12,100   12,100    
Designated | Interest rate swap, effective September 1, 2016, swap one          
Fair values of interest rate swap derivatives          
Notional Amount $ 100,000   $ 100,000    
Fixed rate (as a percent) 1.9013%   1.9013%    
Fair value of interest rate swaps $ (4,879)   $ (4,879)   (138)
Designated | Interest rate swap, effective September 1, 2016, swap two          
Fair values of interest rate swap derivatives          
Notional Amount $ 100,000   $ 100,000    
Fixed rate (as a percent) 1.905%   1.905%    
Fair value of interest rate swaps $ (4,872)   $ (4,872)   (45)
Designated | Interest rate swap, effective September 1, 2016, swap three          
Fair values of interest rate swap derivatives          
Notional Amount $ 50,000   $ 50,000    
Fixed rate (as a percent) 1.9079%   1.9079%    
Fair value of interest rate swaps $ (2,446)   $ (2,446)   (32)
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 $ 0   $ 0   (148)
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 $ 0   $ 0   $ (151)