Derivatives and Hedging Activities - Deferred (Gains) and Losses Terminated Interest Rate (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | | |
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Feb. 04, 2016 | Jan. 10, 2013 |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Net interest settlements on active interest rate derivatives expected to be amortized over the next 12 months, net of tax | | | $ 1,054 | | | |
Net interest settlements on active interest rate derivatives expected to be amortized over the next 12 months, tax | | | 681 | | | |
Deferred losses on the Company's terminated derivatives expected to be amortized over the next twelve months, net of tax | | | 8,966 | | | |
Deferred losses on the Company's terminated derivatives expected to be amortized over the next twelve months, tax | | | 5,795 | | | |
Interest rate swap | | | | | | |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Fixed Rate % | | | | | 1.063% | 0.756% |
Interest rate swap | Designated as hedge | Cash flow hedge | | | | | | |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Deferred Loss Upon Termination | $ 72,587 | | 72,587 | | | |
Un-amortized Deferred (Gain) or Loss | 19,334 | | 19,334 | | | |
Amount of Deferred (Gain)Loss Amortized (including Accelerated Amortization) Into Interest Expense | 4,165 | $ 5,110 | 8,566 | $ 10,526 | | |
Amount of Deferred (Gain) Loss Expected to be Amortized Over the Next Twelve Months | | | 14,761 | | | |
Interest rate swap | Designated as hedge | Cash flow hedge | Terminated derivative at fixed rate of 5.299%, original maturity of Oct-2017 | | | | | | |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Original Maximum Notional Amount | $ 60,852 | | $ 60,852 | | | |
Fixed Rate % | 5.299% | | 5.299% | | | |
Deferred Loss Upon Termination | $ 1,853 | | $ 1,853 | | | |
Un-amortized Deferred (Gain) or Loss | (3) | | (3) | | | |
Amount of Deferred (Gain)Loss Amortized (including Accelerated Amortization) Into Interest Expense | (2) | | (3) | | | |
Amount of Deferred (Gain) Loss Expected to be Amortized Over the Next Twelve Months | | | (3) | | | |
Interest rate swap | Designated as hedge | Cash flow hedge | Terminated derivative at fixed rate of 5.307%, original maturity of Jul-2017 | | | | | | |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Original Maximum Notional Amount | $ 200,000 | | $ 200,000 | | | |
Fixed Rate % | 5.307% | | 5.307% | | | |
Deferred Loss Upon Termination | $ 6,412 | | $ 6,412 | | | |
Un-amortized Deferred (Gain) or Loss | (10) | | (10) | | | |
Amount of Deferred (Gain)Loss Amortized (including Accelerated Amortization) Into Interest Expense | (3) | (1) | (7) | | | |
Amount of Deferred (Gain) Loss Expected to be Amortized Over the Next Twelve Months | | | (10) | | | |
Interest rate swap | Designated as hedge | Cash flow hedge | Terminated derivative at fixed rate of 5.436%, original maturity of Oct-2017, one | | | | | | |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Original Maximum Notional Amount | $ 480,088 | | $ 480,088 | | | |
Fixed Rate % | 5.436% | | 5.436% | | | |
Deferred Loss Upon Termination | $ 1,711 | | $ 1,711 | | | |
Un-amortized Deferred (Gain) or Loss | 642 | | 642 | | | |
Amount of Deferred (Gain)Loss Amortized (including Accelerated Amortization) Into Interest Expense | 124 | 162 | 262 | 341 | | |
Amount of Deferred (Gain) Loss Expected to be Amortized Over the Next Twelve Months | | | 493 | | | |
Interest rate swap | Designated as hedge | Cash flow hedge | Terminated derivative at fixed rate of 5.436%, original maturity of Oct-2017, two | | | | | | |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Original Maximum Notional Amount | $ 480,088 | | $ 480,088 | | | |
Fixed Rate % | 5.436% | | 5.436% | | | |
Deferred Loss Upon Termination | $ 1,526 | | $ 1,526 | | | |
Un-amortized Deferred (Gain) or Loss | 417 | | 417 | | | |
Amount of Deferred (Gain)Loss Amortized (including Accelerated Amortization) Into Interest Expense | 122 | 156 | 265 | 342 | | |
Amount of Deferred (Gain) Loss Expected to be Amortized Over the Next Twelve Months | | | 352 | | | |
Interest rate swap | Designated as hedge | Cash flow hedge | Terminated derivative at fixed rate of 4.305%, original maturity of Oct-2017 | | | | | | |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Original Maximum Notional Amount | $ 58,238 | | $ 58,238 | | | |
Fixed Rate % | 4.305% | | 4.305% | | | |
Deferred Loss Upon Termination | $ 862 | | $ 862 | | | |
Un-amortized Deferred (Gain) or Loss | (20) | | (20) | | | |
Amount of Deferred (Gain)Loss Amortized (including Accelerated Amortization) Into Interest Expense | (12) | (16) | (25) | (30) | | |
Amount of Deferred (Gain) Loss Expected to be Amortized Over the Next Twelve Months | | | (19) | | | |
Interest rate swap | Designated as hedge | Cash flow hedge | Terminated derivative at fixed rate of 4.365%, original maturity of Jul-2017 | | | | | | |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Original Maximum Notional Amount | $ 193,333 | | $ 193,333 | | | |
Fixed Rate % | 4.365% | | 4.365% | | | |
Deferred Loss Upon Termination | $ 3,265 | | $ 3,265 | | | |
Un-amortized Deferred (Gain) or Loss | (63) | | (63) | | | |
Amount of Deferred (Gain)Loss Amortized (including Accelerated Amortization) Into Interest Expense | (33) | (56) | (71) | (114) | | |
Amount of Deferred (Gain) Loss Expected to be Amortized Over the Next Twelve Months | | | (62) | | | |
Interest rate swap | Designated as hedge | Cash flow hedge | Terminated derivative at fixed rate of 3.989%, original maturity of Oct-2017 | | | | | | |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Original Maximum Notional Amount | $ 53,286 | | $ 53,286 | | | |
Fixed Rate % | 3.989% | | 3.989% | | | |
Deferred Loss Upon Termination | $ 2,048 | | $ 2,048 | | | |
Un-amortized Deferred (Gain) or Loss | 84 | | 84 | | | |
Amount of Deferred (Gain)Loss Amortized (including Accelerated Amortization) Into Interest Expense | 57 | 86 | 120 | 179 | | |
Amount of Deferred (Gain) Loss Expected to be Amortized Over the Next Twelve Months | | | 84 | | | |
Interest rate swap | Designated as hedge | Cash flow hedge | Terminated derivative at fixed rate of 4.033%, original maturity of Jul-2017 | | | | | | |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Original Maximum Notional Amount | $ 181,667 | | $ 181,667 | | | |
Fixed Rate % | 4.033% | | 4.033% | | | |
Deferred Loss Upon Termination | $ 8,538 | | $ 8,538 | | | |
Un-amortized Deferred (Gain) or Loss | 300 | | 300 | | | |
Amount of Deferred (Gain)Loss Amortized (including Accelerated Amortization) Into Interest Expense | 162 | 357 | 366 | 763 | | |
Amount of Deferred (Gain) Loss Expected to be Amortized Over the Next Twelve Months | | | 294 | | | |
Interest rate swap | Designated as hedge | Cash flow hedge | Terminated derivative at fixed rate of 5.174%, original maturity of Oct-2017 | | | | | | |
Deferred (gains) and losses for the terminated interest rate derivatives and the related amortization into interest expense | | | | | | |
Original Maximum Notional Amount | $ 427,407 | | $ 427,407 | | | |
Fixed Rate % | 5.174% | | 5.174% | | | |
Deferred Loss Upon Termination | $ 46,372 | | $ 46,372 | | | |
Un-amortized Deferred (Gain) or Loss | 17,987 | | 17,987 | | | |
Amount of Deferred (Gain)Loss Amortized (including Accelerated Amortization) Into Interest Expense | $ 3,750 | $ 4,422 | 7,659 | $ 9,045 | | |
Amount of Deferred (Gain) Loss Expected to be Amortized Over the Next Twelve Months | | | $ 13,632 | | | |