Derivative Instruments and Hedging Activities - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Derivative [Line Items]
Amount hedged of borrowed funds using forward starting interest rate swaps	$ 25,000		$ 25,000
Amount to be hedged of borrowed funds using forward starting interest rate swaps	$ 25,000		$ 25,000
Weighted-average interest rate to be paid (as a percent)	0.60%		0.60%
Interest rate cash flow hedge loss to be reclassified during next 12 months, net	$ 5,800		$ 5,800
Capital market products income	$ 1,333	$ 886	$ 5,376	$ 6,302
Portion of fair value of outstanding interest rate swaps covered by collateral agreements (percent)	100.00%		100.00%		100.00%
Cash Flow Hedging
Derivative [Line Items]
Amount of variable rate loans hedged using interest rate swaps	$ 430,000		$ 430,000