Derivative Instruments and Hedging Activities - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Apr. 20, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Amount of variable rate loans hedged using interest rate swaps	$ 430,000		$ 430,000
Amount hedged of borrowed funds using forward starting interest rate swaps	1,600,000		1,600,000		$ 1,100,000
Amount to be hedged of borrowed funds using forward starting interest rate swaps	$ 485,000		$ 485,000
Weighted-average interest rate to be paid (as a percent)	1.86%		1.86%
Interest rate cash flow hedge loss to be reclassified during next 12 months, net	$ 4,300		$ 4,300
Capital market products income	$ 694	$ 2,154	$ 5,416	$ 3,433
Portion of fair value of outstanding interest rate swaps covered by collateral agreements (percent)	100.00%		100.00%			100.00%