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Debt (Schedule of Interest Rate Derivatives) (Details) | 9 Months Ended
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Sep. 30, 2019 USD ($)
Derivative [Line Items] |
Derivative, Notional Amount | $ 610,000,000
Interest Rate Swap, Date Entered, June 2013 [Member] |
Derivative [Line Items] |
Derivative, Fixed Interest Rate | 3.46%
Debt Instrument, Description of Variable Rate Basis | 1-month LIBOR
Derivative, Notional Amount | $ 80,000,000
Derivative Asset, Fair Value, Gross Asset | $ (238,000)
Interest Rate Swap, Date Entered, March 2014 [Member] |
Derivative [Line Items] |
Derivative, Fixed Interest Rate | 3.51%
Debt Instrument, Description of Variable Rate Basis | 1-month LIBOR
Derivative, Notional Amount | $ 130,000,000
Derivative Asset, Fair Value, Gross Asset | $ (431,000)
Interest Rate Swap, Date Entered, March 2019 - 3.46% [Member] |
Derivative [Line Items] |
Derivative, Fixed Interest Rate | 3.51%
Debt Instrument, Description of Variable Rate Basis | 1-month LIBOR
Derivative, Notional Amount | $ 100,000,000
Interest Rate Derivative Liabilities, at Fair Value | $ (1,691,000)
Interest Rate Swap, Date Entered, March 2019 - 3.47% [Member] |
Derivative [Line Items] |
Derivative, Fixed Interest Rate | 3.52%
Debt Instrument, Description of Variable Rate Basis | 1-month LIBOR
Derivative, Notional Amount | $ 100,000,000
Interest Rate Derivative Liabilities, at Fair Value | $ (1,720,000)
Interest Rate Swap, Date Entered, June 2019 - 2.84% [Member] |
Derivative [Line Items] |
Derivative, Fixed Interest Rate | 2.89%
Debt Instrument, Description of Variable Rate Basis | 1-month LIBOR
Derivative, Notional Amount | $ 150,000,000
Interest Rate Derivative Liabilities, at Fair Value | $ (538,000)
Interest Rate Swap, Date Entered, June 2019 - 2.88% [Member] |
Derivative [Line Items] |
Derivative, Fixed Interest Rate | 2.93%
Debt Instrument, Description of Variable Rate Basis | 1-month LIBOR
Derivative, Notional Amount | $ 50,000,000
Interest Rate Derivative Liabilities, at Fair Value | $ (193,000)

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