v3.25.1
Segment Reporting (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
USD ($)
Segment
Mar. 31, 2024
USD ($)
Segment
Dec. 31, 2024
USD ($)
Segment Reporting [Abstract]      
Number of reportable segments | Segment 2 1  
Financial Information of Reportable Segments [Abstract]      
Net interest income $ 107,223 $ 95,174  
Provision for loan losses 7,554 5,579  
Net interest income after provision for loan losses 99,669 89,595  
Noninterest income [Abstract]      
Service charges on deposit accounts 4,243 4,117  
Card services income 5,317 5,195  
Retirement plan administration fees 15,858 14,287  
Wealth management 10,946 9,697  
Insurance services 4,761 4,388  
Bank owned life insurance income 3,397 2,352  
Net securities (losses) gains (104) 2,183  
Other 3,034 3,173  
Total noninterest income 47,452 45,392  
Noninterest expense [Abstract]      
Salaries and employee benefits 60,694 55,704  
Technology and data services 10,238 9,750  
Occupancy 9,027 8,098  
Professional fees and outside services 4,952 4,853  
Office supplies and postage 1,942 1,865  
FDIC assessment 1,694 1,735  
Advertising 1,138 812  
Amortization of intangible assets 2,111 2,168  
Loan collection and other real estate owned, net 659 553  
Acquisition expenses 1,221 0  
Other 6,224 6,235  
Total noninterest expense 99,900 91,773  
Income before income tax expense 47,221 43,214  
Income tax expense 10,476 9,391  
Net income 36,745 33,823  
Goodwill 362,663 361,851 $ 362,663
Intangible assets, net 34,249 38,968 36,360
Total assets $ 13,864,251 13,439,199 $ 13,786,666
Segment reporting, other segment item, composition, description Included in All Other is the revenue and expenses from certain other non-bank subsidiaries of the parent, including the insurance subsidiary, along with eliminating amounts that do not meet the definition of an operating segment.    
All Other [Member]      
Financial Information of Reportable Segments [Abstract]      
Net interest income $ 0 0  
Provision for loan losses 0 0  
Net interest income after provision for loan losses 0 0  
Noninterest income [Abstract]      
Service charges on deposit accounts 0 0  
Card services income 0 0  
Retirement plan administration fees (398) (369)  
Wealth management 11 13  
Insurance services 4,761 4,387  
Bank owned life insurance income 0 0  
Net securities (losses) gains 0 0  
Other (2,734) (2,766)  
Total noninterest income 1,640 1,265  
Noninterest expense [Abstract]      
Salaries and employee benefits 2,692 2,686  
Technology and data services 167 168  
Occupancy 67 57  
Professional fees and outside services (367) (340)  
Office supplies and postage 14 15  
FDIC assessment 0 0  
Advertising 1 1  
Amortization of intangible assets 59 18  
Loan collection and other real estate owned, net 0 0  
Acquisition expenses 0 0  
Other (2,550) (2,569)  
Total noninterest expense 83 36  
Income before income tax expense 1,557 1,229  
Income tax expense 0 126  
Net income 1,557 1,103  
Goodwill 14,536 14,377  
Intangible assets, net 1,215 339  
Total assets (1,782,231) (1,650,032)  
Operating Segments [Member] | Banking [Member]      
Financial Information of Reportable Segments [Abstract]      
Net interest income 107,205 95,157  
Provision for loan losses 7,554 5,579  
Net interest income after provision for loan losses 99,651 89,578  
Noninterest income [Abstract]      
Service charges on deposit accounts 4,243 4,117  
Card services income 5,317 5,195  
Retirement plan administration fees 0 0  
Wealth management 10,337 9,187  
Insurance services 0 1  
Bank owned life insurance income 3,397 2,352  
Net securities (losses) gains (104) 2,183  
Other 5,613 5,806  
Total noninterest income 28,803 28,841  
Noninterest expense [Abstract]      
Salaries and employee benefits 49,548 45,125  
Technology and data services 9,801 9,280  
Occupancy 8,692 7,758  
Professional fees and outside services 4,815 4,724  
Office supplies and postage 1,881 1,758  
FDIC assessment 1,694 1,735  
Advertising 1,118 796  
Amortization of intangible assets 1,508 1,682  
Loan collection and other real estate owned, net 659 553  
Acquisition expenses 1,221 0  
Other 8,540 8,526  
Total noninterest expense 89,477 81,937  
Income before income tax expense 38,977 36,482  
Income tax expense 9,051 8,054  
Net income 29,926 28,428  
Goodwill 324,250 324,250  
Intangible assets, net 26,045 32,290  
Total assets 15,591,557 15,050,010  
Operating Segments [Member] | Retirement Plan Administration [Member]      
Financial Information of Reportable Segments [Abstract]      
Net interest income 18 17  
Provision for loan losses 0 0  
Net interest income after provision for loan losses 18 17  
Noninterest income [Abstract]      
Service charges on deposit accounts 0 0  
Card services income 0 0  
Retirement plan administration fees 16,256 14,656  
Wealth management 598 497  
Insurance services 0 0  
Bank owned life insurance income 0 0  
Net securities (losses) gains 0 0  
Other 155 133  
Total noninterest income 17,009 15,286  
Noninterest expense [Abstract]      
Salaries and employee benefits 8,454 7,893  
Technology and data services 270 302  
Occupancy 268 283  
Professional fees and outside services 504 469  
Office supplies and postage 47 92  
FDIC assessment 0 0  
Advertising 19 15  
Amortization of intangible assets 544 468  
Loan collection and other real estate owned, net 0 0  
Acquisition expenses 0 0  
Other 234 278  
Total noninterest expense 10,340 9,800  
Income before income tax expense 6,687 5,503  
Income tax expense 1,425 1,211  
Net income 5,262 4,292  
Goodwill 23,877 23,224  
Intangible assets, net 6,989 6,339  
Total assets $ 54,925 $ 39,221