Derivative Instruments and Hedging Activities - Schedule of Effect of Cash Flow Hedge Accounting on Accumulated OCI (Details) - Cash Flow Hedges - Derivatives Designated as Hedging Instruments - Interest Rate Swap Agreements - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Derivative Instruments Gain Loss [Line Items]
Loss related to effective portion of derivatives recognized in accumulated OCI, gross of tax effect	$ 5,076	$ 21,220
Interest Expense
Derivative Instruments Gain Loss [Line Items]
Gain related to effective portion of derivatives reclassified from accumulated OCI to interest expense, gross of tax effect	$ 39	$ 199