Derivative Financial Instruments- Cash Flow Hedging (Details) - Interest Rate Contract - Cash Flow Hedging - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Amount of unrealized loss recognized in OCI on derivatives	$ (99)	$ (2,060)	$ (10,292)	$ (7,305)
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of loss (gain) reclassified from AOCI into interest expense	933	3	1,965	(154)
Total interest expense presented in the Condensed Consolidated Statements of Income in which the effects of the cash flow hedges are recorded	$ 2,064	$ 2,483	$ 6,496	$ 6,788