v3.25.2
Segment Reporting (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Segment
Jun. 30, 2024
USD ($)
Segment
Dec. 31, 2024
USD ($)
Segment Reporting [Abstract]          
Number of reportable segments | Segment     2 1  
Financial Information of Reportable Segments [Abstract]          
Net interest income $ 124,220 $ 97,174 $ 231,443 $ 192,348  
Provision for loan losses 17,835 8,899 25,389 14,478  
Net interest income after provision for loan losses 106,385 88,275 206,054 177,870  
Noninterest income [Abstract]          
Service charges on deposit accounts 4,578 4,219 8,821 8,336  
Card services income 6,077 5,587 11,394 10,782  
Retirement plan administration fees 15,710 14,798 31,568 29,085  
Wealth management 10,678 10,173 21,624 19,870  
Insurance services 4,097 3,848 8,858 8,236  
Bank owned life insurance income 2,180 1,834 5,577 4,186  
Net securities gains (losses) 112 (92) 8 2,091  
Other 3,500 2,865 6,534 6,038  
Total noninterest income 46,932 43,232 94,384 88,624  
Noninterest expense [Abstract]          
Salaries and employee benefits 64,155 55,393 124,849 111,097  
Technology and data services 10,804 9,249 21,042 18,999  
Occupancy 9,038 7,671 18,065 15,769  
Professional fees and outside services 5,021 4,565 9,973 9,418  
Office supplies and postage 1,871 1,804 3,813 3,669  
FDIC assessment 1,820 1,667 3,514 3,402  
Advertising 974 873 2,112 1,685  
Amortization of intangible assets 3,042 2,133 5,153 4,301  
Loan collection and other real estate owned, net 489 715 1,148 1,268  
Acquisition expenses 17,180 0 18,401 0  
Other 8,216 5,518 14,440 11,753  
Total noninterest expense 122,610 89,588 222,510 181,361  
Income before income tax expense 30,707 41,919 77,928 85,133  
Income tax expense 8,197 9,203 18,673 18,594  
Net income 22,510 32,716 59,255 66,539  
Goodwill 454,072 361,851 454,072 361,851 $ 362,663
Intangible assets, net 64,447 36,835 64,447 36,835 36,360
Total assets 16,014,781 13,501,909 $ 16,014,781 13,501,909 $ 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 $ 0 0  
Provision for loan losses 0 0 0 0  
Net interest income after provision for loan losses 0 0 0 0  
Noninterest income [Abstract]          
Service charges on deposit accounts 0 0 0 0  
Card services income 0 0 0 0  
Retirement plan administration fees (371) (353) (769) (722)  
Wealth management 8 13 19 26  
Insurance services 4,096 3,848 8,857 8,235  
Bank owned life insurance income 0 0 0 0  
Net securities gains (losses) 0 0 0 0  
Other (1,663) (1,919) (4,397) (4,685)  
Total noninterest income 2,070 1,589 3,710 2,854  
Noninterest expense [Abstract]          
Salaries and employee benefits 2,796 2,677 5,488 5,363  
Technology and data services 160 178 327 346  
Occupancy 67 59 134 116  
Professional fees and outside services (351) (326) (718) (666)  
Office supplies and postage 15 13 29 28  
FDIC assessment 0 0 0 0  
Advertising 1 2 2 3  
Amortization of intangible assets 57 16 116 34  
Loan collection and other real estate owned, net 0 0 0 0  
Acquisition expenses 0 0 0 0  
Other (1,742) (1,882) (4,292) (4,451)  
Total noninterest expense 1,003 737 1,086 773  
Income before income tax expense 1,067 852 2,624 2,081  
Income tax expense 0 41 0 167  
Net income 1,067 811 2,624 1,914  
Goodwill 14,536 14,377 14,536 14,377  
Intangible assets, net 1,158 323 1,158 323  
Total assets (2,047,258) (1,673,919) (2,047,258) (1,673,919)  
Operating Segments [Member] | Banking [Member]          
Financial Information of Reportable Segments [Abstract]          
Net interest income 124,202 97,156 231,407 192,313  
Provision for loan losses 17,835 8,899 25,389 14,478  
Net interest income after provision for loan losses 106,367 88,257 206,018 177,835  
Noninterest income [Abstract]          
Service charges on deposit accounts 4,578 4,219 8,821 8,336  
Card services income 6,077 5,587 11,394 10,782  
Retirement plan administration fees 0 0 0 0  
Wealth management 10,153 9,660 20,490 18,847  
Insurance services 1 0 1 1  
Bank owned life insurance income 2,180 1,834 5,577 4,186  
Net securities gains (losses) 112 (92) 8 2,091  
Other 5,018 4,652 10,631 10,458  
Total noninterest income 28,119 25,860 56,922 54,701  
Noninterest expense [Abstract]          
Salaries and employee benefits 52,659 44,349 102,207 89,474  
Technology and data services 10,341 8,813 20,142 18,093  
Occupancy 8,687 7,331 17,379 15,089  
Professional fees and outside services 4,851 4,515 9,666 9,239  
Office supplies and postage 1,783 1,710 3,664 3,468  
FDIC assessment 1,820 1,667 3,514 3,402  
Advertising 952 859 2,070 1,655  
Amortization of intangible assets 2,500 1,666 4,008 3,348  
Loan collection and other real estate owned, net 489 715 1,148 1,268  
Acquisition expenses 17,180 0 18,401 0  
Other 9,684 7,101 18,224 15,627  
Total noninterest expense 110,946 78,726 200,423 160,663  
Income before income tax expense 23,540 35,391 62,517 71,873  
Income tax expense 6,917 7,947 15,968 16,001  
Net income 16,623 27,444 46,549 55,872  
Goodwill 415,659 324,250 415,659 324,250  
Intangible assets, net 56,785 30,624 56,785 30,624  
Total assets 18,013,397 15,132,919 18,013,397 15,132,919  
Operating Segments [Member] | Retirement Plan Administration [Member]          
Financial Information of Reportable Segments [Abstract]          
Net interest income 18 18 36 35  
Provision for loan losses 0 0 0 0  
Net interest income after provision for loan losses 18 18 36 35  
Noninterest income [Abstract]          
Service charges on deposit accounts 0 0 0 0  
Card services income 0 0 0 0  
Retirement plan administration fees 16,081 15,151 32,337 29,807  
Wealth management 517 500 1,115 997  
Insurance services 0 0 0 0  
Bank owned life insurance income 0 0 0 0  
Net securities gains (losses) 0 0 0 0  
Other 145 132 300 265  
Total noninterest income 16,743 15,783 33,752 31,069  
Noninterest expense [Abstract]          
Salaries and employee benefits 8,700 8,367 17,154 16,260  
Technology and data services 303 258 573 560  
Occupancy 284 281 552 564  
Professional fees and outside services 521 376 1,025 845  
Office supplies and postage 73 81 120 173  
FDIC assessment 0 0 0 0  
Advertising 21 12 40 27  
Amortization of intangible assets 485 451 1,029 919  
Loan collection and other real estate owned, net 0 0 0 0  
Acquisition expenses 0 0 0 0  
Other 274 299 508 577  
Total noninterest expense 10,661 10,125 21,001 19,925  
Income before income tax expense 6,100 5,676 12,787 11,179  
Income tax expense 1,280 1,215 2,705 2,426  
Net income 4,820 4,461 10,082 8,753  
Goodwill 23,877 23,224 23,877 23,224  
Intangible assets, net 6,504 5,888 6,504 5,888  
Total assets $ 48,642 $ 42,909 $ 48,642 $ 42,909