Fair Value Measurements (Details 1) - USD ($) $ in Thousands		Jun. 30, 2024	Dec. 31, 2023
ASSETS
Trading		$ 4,384	$ 4,987
Equity		21,028	22,510
Recurring fair value measurements
ASSETS
Trading		4,384	4,987
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		1,235,298	1,338,201
Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		21,028	22,510
Recurring fair value measurements | U.S. government agency securities
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		205,882	207,138
Recurring fair value measurements | Agency mortgage-backed securities
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		266,060	277,047
Recurring fair value measurements | Agency collateralized mortgage obligations
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		30,931	33,189
Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		190	190
Recurring fair value measurements | Pooled trust preferred securities issued by banks and insurers
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		1,037	1,018
Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		43,141	46,572
Recurring fair value measurements | Loans held for sale
ASSETS
Loans Held-for-sale, Fair Value Disclosure		17,850	6,368
Recurring fair value measurements | Derivative Financial Instruments, Assets [Member]
ASSETS
Derivative Asset, Fair Value, Gross Asset		119,746	103,948
Recurring fair value measurements | Derivative instruments
LIABILITIES
Financial and Nonfinancial Liabilities, Fair Value Disclosure		148,366	133,868
Recurring fair value measurements | US Treasury Securities [Member]
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		673,415	769,102
Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		25,853	28,881
Nonrecurring fair value measurements | Collateral Dependent Loans [Member]
ASSETS
Assets, Fair Value Disclosure	[1]	25,853	28,881
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements
ASSETS
Trading		4,384	4,987
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		25,412	27,497
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		21,028	22,510
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)			0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		0	0
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		1,209,886	1,310,704
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		0	0
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | U.S. government agency securities
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		205,882	207,138
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Agency mortgage-backed securities
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		266,060	277,047
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Agency collateralized mortgage obligations
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		30,931	33,189
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		190	190
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Pooled trust preferred securities issued by banks and insurers
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		1,037	1,018
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		43,141	46,572
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Loans held for sale
ASSETS
Loans Held-for-sale, Fair Value Disclosure		17,850	6,368
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Derivative Financial Instruments, Assets [Member]
ASSETS
Derivative Asset, Fair Value, Gross Asset		119,746	103,948
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Derivative instruments
LIABILITIES
Financial and Nonfinancial Liabilities, Fair Value Disclosure		148,366	133,868
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | US Treasury Securities [Member]
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		673,415	769,102
Significant Other Observable Inputs (Level 2) | Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		0	0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		0	0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		0	0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)			0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,344,856 and $1,459,862)		0	0
Significant Unobservable Inputs (Level 3) | Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		25,853	28,881
Significant Unobservable Inputs (Level 3) | Nonrecurring fair value measurements | Collateral Dependent Loans [Member]
ASSETS
Assets, Fair Value Disclosure	[1]	$ 25,853	$ 28,881

[1] The carrying value of individually assessed collateral dependent loans is based on the lower of amortized cost or fair value of the underlying collateral less costs to sell. The fair value of the underlying collateral is generally determined through independent appraisals, which generally include various Level 3 inputs which are not identifiable. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of these possible adjustments may vary.