XML 127 R105.htm IDEA: XBRL DOCUMENT v3.24.0.1
Income Taxes - Provision for income taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Difference between the provision for income taxes and taxes computed by applying the federal statutory income tax rate to income before provision for income taxes      
Income taxes at federal statutory rate $ 132,479 $ 133,006 $ 126,899
Increase (reduction) of taxes resulting from:      
State income taxes, net of federal tax benefit 19,123 21,491 18,372
Non- deductible merger expenses   415  
Increase in cash surrender value of BOLI policies (5,605) (5,105) (3,866)
Tax-exempt interest (7,016) (7,828) (5,450)
Income tax credits (14,253) (13,667) (11,759)
Non-deductible FDIC premiums 5,330 3,287 2,380
Non-deductible executive compensation 4,745 4,319 530
Other, net 1,741 1,395 1,630
Provision for income taxes 136,544 137,313 $ 128,736
Components of the net deferred tax asset      
Allowance for credit losses 123,496 101,416  
Share-based compensation 10,425 10,509  
Pension plan and post-retirement benefits 371 1,157  
Deferred compensation 14,039 14,583  
Purchase accounting adjustments 1,439 1,484  
Capitalized research and development costs 4,524    
Accrued expenses 14,470 6,953  
Other real estate owned   877  
FDIC special assessment 6,168    
Net operating loss and tax credit carryforwards 20,263 27,271  
Nonaccrual Interest 1,773 566  
Lease liability 26,076 27,675  
Unrealized losses on investment securities available for sale 142,543 215,013  
Other 2,201 1,277  
Total deferred tax assets 367,788 408,781  
Depreciation 10,439 22,442  
Intangible assets 17,764 23,558  
Net deferred loan costs 16,468 10,431  
Right of use assets 24,161 25,848  
Prepaid expense 809 836  
Mark to market liabilities 92,505 110,122  
Tax deductible goodwill 12,398 9,090  
Mortgage servicing rights 20,863 21,371  
Other real estate owned 192    
Other 3,950 1,776  
Total deferred tax liabilities 199,549 225,474  
Net deferred tax assets before valuation allowance 168,239 183,307  
Less, valuation allowance (3,885) (5,506)  
Net deferred tax assets $ 164,354 $ 177,801