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Derivative Instruments, Hedging Activities and Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Derivative, average cap interest rate (as percent) | 3.92% |  | 3.92% |  |
Hedge derivative at fair value, net | $ 20,700 |  | $ 20,700 |  | $ 3,500
Gain (loss) reclassified to earnings | 36 |  | 800 |  |
Gain (loss) reclassified from accumulated OCI into income, effective portion, net |  | $ 300 |  | $ 400 |
Interest expense | 14,302 | $ 16,058 | 46,884 | $ 49,141 |
Decrease As Hedged Forecasted Interest Payments Occur |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Interest expense |  |  | 1,400 |  |
Prepaid and Other Assets |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Hedge asset at fair value |  |  |  |  | 3,600
Accounts Payable and Accrued Expenses |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Hedge liability at fair value |  |  |  |  | 7,100
Accrued Interest |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Hedge derivative at fair value, net | 20 |  | 20 |  | $ 100
Cash Flow Hedging |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Derivative, notional amount | $ 266,200 |  | $ 266,200 |  |

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