Fair Value of Financial Instruments (Assets Measured at Fair Value) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets, at fair value	$ 392	$ 4,633
Derivative liabilities, at fair value	5,305
Total	5,697
Total		4,633
Quoted Prices in Active Markets Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets, at fair value	0	0
Derivative liabilities, at fair value	0
Total	0
Total		0
Significant Other Observable Inputs Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets, at fair value	392	4,633
Derivative liabilities, at fair value	5,305
Total	5,697
Total		4,633
Significant Unobservable Inputs Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets, at fair value	0	0
Derivative liabilities, at fair value	0
Total	$ 0
Total		$ 0