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Interest Rate Derivatives (Details) (USD $)
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3 Months Ended |
9 Months Ended |
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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Dec. 31, 2012
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| Fair values of interest rate swap derivatives |
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| Fair value of interest rate swaps |
$ 1,600,000
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$ 1,600,000
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$ (6,185,000)
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| Fair value of interest rate derivatives and balance sheet classification |
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| Interest rate derivatives |
5,195,000
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|
5,195,000
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|
0
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| Effect of interest rate derivatives on consolidated statements of operations and comprehensive income |
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| Amount of (loss) gain recognized in accumulated other comprehensive income (loss) (“AOCI”) (effective portion) |
(2,482,000)
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(2,760,000)
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5,810,000
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(7,386,000)
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| Amount of loss reclassified from AOCI into interest expense (effective portion) |
689,000
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|
632,000
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2,021,000
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3,034,000
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Interest rate swaps
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| Fair value of interest rate derivatives and balance sheet classification |
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| Interest rate derivatives |
5,195,000
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5,195,000
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0
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| Fair value of Interest rate swaps classified as interest rate derivatives |
(3,595,000)
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(3,595,000)
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(6,185,000)
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| Effect of interest rate derivatives on consolidated statements of operations and comprehensive income |
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| Approximate amount to be reclassified from AOCI to interest expense over the next 12 months |
2,600,000
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2,600,000
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| Interest rate derivatives in liability position, fair value |
3,600,000
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3,600,000
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| Termination value to settle obligations under interest rate derivative agreements |
3,800,000
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3,800,000
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Designated | Interest rate swap, effective date January 3, 2012, swap one
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| Fair values of interest rate swap derivatives |
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| Notional Amount |
100,000,000
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|
100,000,000
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| Fixed rate (as a percent) |
0.6123%
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0.6123%
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| Floating rate index |
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One-Month LIBOR
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| Fair value of interest rate swaps |
(365,000)
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(365,000)
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|
(594,000)
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Designated | Interest rate swap, effective date January 3, 2012, swap two
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| Fair values of interest rate swap derivatives |
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| Notional Amount |
100,000,000
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|
100,000,000
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| Fixed rate (as a percent) |
0.61%
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0.61%
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| Floating rate index |
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One-Month LIBOR
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| Fair value of interest rate swaps |
(362,000)
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(362,000)
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(591,000)
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Designated | Interest rate swap, effective date January 3, 2012, swap three
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| Fair values of interest rate swap derivatives |
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| Notional Amount |
100,000,000
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100,000,000
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| Fixed rate (as a percent) |
0.832%
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|
0.832%
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| Floating rate index |
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One-Month LIBOR
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| Fair value of interest rate swaps |
(963,000)
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|
(963,000)
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(1,313,000)
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Designated | Interest rate swap, effective date January 3, 2012, swap four
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| Fair values of interest rate swap derivatives |
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| Notional Amount |
100,000,000
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|
100,000,000
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| Fixed rate (as a percent) |
0.832%
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|
0.832%
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| Floating rate index |
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One-Month LIBOR
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| Fair value of interest rate swaps |
(963,000)
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(963,000)
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(1,313,000)
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Designated | Interest rate swap, effective date November 2, 2010
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| Fair values of interest rate swap derivatives |
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| Notional Amount |
37,894,000
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[1] |
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37,894,000
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[1] |
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| Fixed rate (as a percent) |
3.83%
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3.83%
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| Floating rate index |
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|
One-Month LIBOR + 2.25%
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| Derivative, Basis Spread on Variable Rate |
2.25%
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2.25%
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| Fair value of interest rate swaps |
(933,000)
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(933,000)
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(1,268,000)
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| Notional amount of interest rate derivatives after scheduled amortization |
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|
36,200,000
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Designated | Interest rate swap, effective date September 2, 2014, swap one
|
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| Fair values of interest rate swap derivatives |
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| Notional Amount |
100,000,000
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|
100,000,000
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| Fixed rate (as a percent) |
0.8055%
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0.8055%
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| Floating rate index |
|
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One-Month LIBOR
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| Fair value of interest rate swaps |
1,000
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|
1,000
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(263,000)
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Designated | Interest rate swap, effective date September 2, 2014, swap two
|
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| Fair values of interest rate swap derivatives |
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| Notional Amount |
100,000,000
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100,000,000
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| Fixed rate (as a percent) |
0.81%
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0.81%
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| Floating rate index |
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One-Month LIBOR
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| Fair value of interest rate swaps |
(9,000)
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(9,000)
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(272,000)
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Designated | Interest rate swap, effective date September 1, 2015, swap one
|
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| Fair values of interest rate swap derivatives |
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| Notional Amount |
100,000,000
|
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|
100,000,000
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| Fixed rate (as a percent) |
1.673%
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1.673%
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| Floating rate index |
|
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One-Month LIBOR
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| Fair value of interest rate swaps |
2,685,000
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2,685,000
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(154,000)
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Designated | Interest rate swap, effective date September 1, 2015, swap two
|
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| Fair values of interest rate swap derivatives |
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| Notional Amount |
100,000,000
|
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|
100,000,000
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| Fixed rate (as a percent) |
1.73%
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1.73%
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| Floating rate index |
|
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One-Month LIBOR
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| Fair value of interest rate swaps |
$ 2,509,000
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$ 2,509,000
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$ (417,000)
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