Derivative Instruments - Hedge Derivatives (Details) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Derivative [Line Items]
Net gain on cash flow hedges reclassified from other comprehensive income into net income, net of tax		$ (2,511,000)	$ (2,692,000)	$ (5,020,000)	$ (2,188,000)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months				9,900,000
Cash flow hedge | Hedging derivative | Asset derivatives
Derivative [Line Items]
Derivative Asset, Statement of Financial Position						Other assets
Fair value hedge | Hedging derivative
Derivative [Line Items]
Forecasted Notional Amount		1,427,724,000		1,427,724,000		$ 1,031,490,000
Fair Value Hedge Assets		39,511,000		39,511,000		(24,672,000)
Fair value hedge | Hedging derivative | Securities
Derivative [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ 986,000,000	15,344,000	(8,092,000)	64,183,000	26,674,000
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge		(15,344,000)	8,092,000	(64,183,000)	(26,674,000)
Derivative Instruments and Hedges, Assets		1,476,346,000		1,476,346,000		1,165,773,000
Fair Value Hedging Adjustment		(39,511,000)		(39,511,000)		24,672,000
Gain (Loss) on Fair Value Hedges Recognized in Earnings	13,300,000
Fair value hedge | Hedging derivative | Securities | Asset derivatives
Derivative [Line Items]
Forecasted Notional Amount		$ 1,094,534,000		$ 1,094,534,000		559,820,000
Derivative Asset, Statement of Financial Position		Other assets		Other assets
Weighted Average Remaining Maturity				8 years 6 months 10 days
Pay Rate (as percent)		1.98%		1.98%
Derivative, Type of Interest Rate Paid on Swap				3 month LIBOR/ Federal Funds/ SOFR
Fair Value Hedge Assets		$ 41,928,000		$ 41,928,000		15,109,000
Terminated Notional Amount of Interest Rate Derivatives	164,300,000
Terminated Fair Value Amount of Interest Rate Derivatives	$ 14,300,000
Fair value hedge | Hedging derivative | Securities | Liability derivatives
Derivative [Line Items]
Forecasted Notional Amount		$ 333,190,000		$ 333,190,000		471,670,000
Weighted Average Remaining Maturity				5 years 9 months 21 days
Pay Rate (as percent)		3.15%		3.15%
Derivative, Type of Interest Rate Paid on Swap				3 month LIBOR/ SOFR
Fair Value Hedge Assets		$ (2,417,000)		$ (2,417,000)		$ (39,781,000)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Other liabilities		Other liabilities		Other liabilities
Fair value hedge | Hedging derivative | Securities | LIBOR
Derivative [Line Items]
Forecasted Notional Amount		$ 471,700,000		$ 471,700,000
Fair value hedge | Hedging derivative | Securities | Federal Funds Rate
Derivative [Line Items]
Forecasted Notional Amount		392,200,000		392,200,000
Fair value hedge | Hedging derivative | Securities | Secured Overnight Financing Rate
Derivative [Line Items]
Forecasted Notional Amount		563,800,000		563,800,000
Fair value hedge | Hedging derivative | Loans
Derivative [Line Items]
Amortization expense, reduction to interest income on loans		$ 544,000	$ 927,000	$ 1,200,000	$ 1,900,000