v3.25.4
SEGMENT REPORTING - Reconciliations of Significant Segment Totals (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
INTEREST INCOME                      
Interest and fees on loans                 $ 238,833 $ 228,585 $ 197,725
Interest on securities                 25,948 31,983 36,523
Other investments                 4,956 6,208 5,429
Total Interest Income $ 67,425 $ 69,290 $ 66,878 $ 66,144 $ 66,978 $ 68,334 $ 66,338 $ 65,126 269,737 266,776 239,677
INTEREST EXPENSE                      
Deposits                 83,498 92,694 75,075
Other borrowings and subordinated debt and debentures                 6,224 7,834 8,273
Total Interest Expense                 89,722 100,528 83,348
Net Interest Income 46,354 45,361 44,615 43,685 42,851 41,854 41,346 40,197 180,015 166,248 156,329
Provision for credit losses 1,923 1,991 1,500 721 2,217 1,488 19 744 6,135 4,468 6,210
Net Interest Income After Provision for Credit Losses                 173,880 161,780 150,119
NON-INTEREST INCOME                      
Interchange income                 13,860 13,992 13,996
Service charges on deposit accounts                 12,022 11,870 12,361
Net gains on mortgage loans                 6,780 6,579 7,436
Mortgage loan servicing, net                 827 9,447 4,626
Other                 12,155 14,474 12,257
Total Non-interest Income                 45,644 56,362 50,676
NON-INTEREST EXPENSE                      
Compensation and employee benefits                 85,194 84,955 78,965
Data processing                 14,788 13,579 11,862
Occupancy, net                 8,567 7,806 7,908
Interchange expense                 4,641 4,504 4,332
Furniture, fixtures and equipment                 3,467 3,762 3,756
Advertising                 3,211 3,058 2,165
FDIC deposit insurance                 2,824 2,870 3,005
Loan and collection                 2,737 2,474 2,174
Legal and professional                 2,448 2,566 2,208
Communications                 1,997 2,095 2,406
Other                 8,359 7,427 8,338
Total Non-interest Expense                 138,233 135,096 127,119
Income Before Income Tax 20,311 21,176 20,678 19,126 22,768 17,291 23,166 19,821 81,291 83,046 73,676
Income tax expense                 12,750 16,256 14,609
Net Income 18,572 $ 17,502 $ 16,877 $ 15,590 18,461 $ 13,810 $ 18,528 $ 15,991 68,541 66,790 59,067
OTHER SEGMENT DISCLOSURES                      
Depreciation                 4,993 5,188 5,183
Amortization                 487 516 547
Total assets 5,505,720       5,338,104       5,505,720 5,338,104 5,263,726
Operating Segments | Independent Bank                      
INTEREST INCOME                      
Interest and fees on loans                 238,532 228,325 197,489
Interest on securities                 25,948 31,983 36,523
Other investments                 4,956 6,208 5,429
Total Interest Income                 269,436 266,516 239,441
INTEREST EXPENSE                      
Deposits                 84,854 94,440 76,392
Other borrowings and subordinated debt and debentures                 828 2,016 2,547
Total Interest Expense                 85,682 96,456 78,939
Net Interest Income                 183,754 170,060 160,502
Provision for credit losses                 6,135 4,468 6,210
Net Interest Income After Provision for Credit Losses                 177,619 165,592 154,292
NON-INTEREST INCOME                      
Interchange income                 13,860 13,992 13,996
Service charges on deposit accounts                 12,022 11,870 12,361
Net gains on mortgage loans                 6,543 6,374 7,270
Mortgage loan servicing, net                 827 9,447 4,626
Other                 11,751 14,074 11,867
Total Non-interest Income                 45,003 55,757 50,120
NON-INTEREST EXPENSE                      
Compensation and employee benefits                 84,799 84,580 78,444
Data processing                 14,709 13,505 11,790
Occupancy, net                 8,544 7,782 7,884
Interchange expense                 4,641 4,504 4,332
Furniture, fixtures and equipment                 3,464 3,759 3,751
Advertising                 3,202 3,049 2,156
FDIC deposit insurance                 2,824 2,870 3,005
Loan and collection                 2,737 2,474 2,174
Legal and professional                 2,009 2,163 1,748
Communications                 1,972 2,073 2,381
Other                 7,559 6,674 7,537
Total Non-interest Expense                 136,460 133,433 125,202
Income Before Income Tax                 86,162 87,916 79,210
Income tax expense                 14,195 17,334 15,842
Net Income                 71,967 70,582 63,368
OTHER SEGMENT DISCLOSURES                      
Depreciation                 4,991 5,185 5,178
Amortization                 487 516 547
Total assets 5,499,615       5,328,488       5,499,615 5,328,488 5,259,523
Segment Reporting, Reconciling Item, Corporate Nonsegment                      
INTEREST INCOME                      
Interest and fees on loans                 0 0 0
Interest on securities                 0 0 0
Other investments                 1,356 1,746 1,317
Total Interest Income                 1,356 1,746 1,317
INTEREST EXPENSE                      
Deposits                 0 0 0
Other borrowings and subordinated debt and debentures                 5,396 5,818 5,726
Total Interest Expense                 5,396 5,818 5,726
Net Interest Income                 (4,040) (4,072) (4,409)
Provision for credit losses                 0 0 0
Net Interest Income After Provision for Credit Losses                 (4,040) (4,072) (4,409)
NON-INTEREST INCOME                      
Interchange income                 0 0 0
Service charges on deposit accounts                 0 0 0
Net gains on mortgage loans                 0 0 0
Mortgage loan servicing, net                 0 0 0
Other                 1,278 1,082 927
Total Non-interest Income                 1,278 1,082 927
NON-INTEREST EXPENSE                      
Compensation and employee benefits                 545 493 609
Data processing                 79 74 72
Occupancy, net                 23 24 24
Interchange expense                 0 0 0
Furniture, fixtures and equipment                 3 3 5
Advertising                 9 9 9
FDIC deposit insurance                 0 0 0
Loan and collection                 0 0 0
Legal and professional                 439 403 460
Communications                 25 22 25
Other                 800 753 801
Total Non-interest Expense                 1,923 1,781 2,005
Income Before Income Tax                 (4,685) (4,771) (5,487)
Income tax expense                 (1,406) (1,057) (1,223)
Net Income                 (3,279) (3,714) (4,264)
OTHER SEGMENT DISCLOSURES                      
Depreciation                 2 3 5
Amortization                 0 0 0
Total assets 565,709       549,242       565,709 549,242 493,158
Eliminations                      
INTEREST INCOME                      
Interest and fees on loans                 301 260 236
Interest on securities                 0 0 0
Other investments                 (1,356) (1,746) (1,317)
Total Interest Income                 (1,055) (1,486) (1,081)
INTEREST EXPENSE                      
Deposits                 (1,356) (1,746) (1,317)
Other borrowings and subordinated debt and debentures                 0 0 0
Total Interest Expense                 (1,356) (1,746) (1,317)
Net Interest Income                 301 260 236
Provision for credit losses                 0 0 0
Net Interest Income After Provision for Credit Losses                 301 260 236
NON-INTEREST INCOME                      
Interchange income                 0 0 0
Service charges on deposit accounts                 0 0 0
Net gains on mortgage loans                 237 205 166
Mortgage loan servicing, net                 0 0 0
Other                 (874) (682) (537)
Total Non-interest Income                 (637) (477) (371)
NON-INTEREST EXPENSE                      
Compensation and employee benefits                 (150) (118) (88)
Data processing                 0 0 0
Occupancy, net                 0 0 0
Interchange expense                 0 0 0
Furniture, fixtures and equipment                 0 0 0
Advertising                 0 0 0
FDIC deposit insurance                 0 0 0
Loan and collection                 0 0 0
Legal and professional                 0 0 0
Communications                 0 0 0
Other                 0 0 0
Total Non-interest Expense                 (150) (118) (88)
Income Before Income Tax                 (186) (99) (47)
Income tax expense                 (39) (21) (10)
Net Income                 (147) (78) (37)
OTHER SEGMENT DISCLOSURES                      
Depreciation                 0 0 0
Amortization                 0 0 0
Total assets $ (559,604)       $ (539,626)       $ (559,604) $ (539,626) $ (488,955)