Derivative Instruments and Hedging Activities - Effect of Derivative Financial Instruments on Income Statement (Details) - Derivatives Designated as Hedging Instruments - Interest Rate Contracts - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest expense
Derivative [Line Items]
Amount of Loss Reclassified from Other Comprehensive Income into Income (Effective Portion)	$ (334)	$ (470)
Amount of Loss Reclassified from Other Comprehensive Income into Income (Effective Portion)			$ (985)
Cash Flow Hedging
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	$ (1,072)	$ 247