Derivatives, Hedging Activities and Other Financial Instruments - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Collateral already posted, fair value	$ 46,500	$ 13,700
Interest Rate Swap
Derivative [Line Items]
Income (expense) in fair value adjustments	428	(478)
Other liabilities
Derivative [Line Items]
Credit risk derivative liability, fair value	45,429	10,708
Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	$ 725,900	$ 337,600