XML 66 R54.htm IDEA: XBRL DOCUMENT
v3.25.1

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Credit Quality Indicator (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Term Loans Amortized Cost by Origination Year |  |  |
2025 | $ 79,254 |  | $ 260,403
2024 | 261,083 |  | 299,782
2023 | 290,186 |  | 496,016
2022 | 482,916 |  | 272,066
2021 | 266,278 |  | 192,541
Prior | 547,831 |  | 380,263
Revolving Loans Amortized Cost | 162,193 |  | 166,273
Revolving Loans Converted to Term | 7,895 |  | 4,075
Total loans, net of deferred loan fees and costs | 2,097,636 |  | 2,071,419
Total gross charge-offs |  |  |
2025 | 0 |  | 52
2024 | 57 |  | 622
2023 | 186 |  | 746
2022 | 82 |  | 181
2021 | 37 |  | 99
Prior | 29 |  | 152
Revolving Loans Amortized Cost | 7 |  | 21
Revolving Loans Converted to Term | 0 |  | 0
Total | 398 | $ 367 | 1,873
Commercial and industrial |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 13,238 |  | 45,060
2024 | 40,405 |  | 32,419
2023 | 30,940 |  | 38,803
2022 | 37,365 |  | 17,520
2021 | 16,692 |  | 12,746
Prior | 37,824 |  | 31,812
Revolving Loans Amortized Cost | 113,882 |  | 119,401
Revolving Loans Converted to Term | 5,386 |  | 1,760
Total loans, net of deferred loan fees and costs | 295,732 |  | 299,521
Total gross charge-offs |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 84
2023 | 0 |  | 200
2022 | 0 |  | 6
2021 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost | 5 |  | 12
Revolving Loans Converted to Term | 0 |  | 0
Total | 5 |  | 302
Commercial and industrial | Pass |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 13,238 |  | 44,130
2024 | 39,353 |  | 32,157
2023 | 30,511 |  | 34,862
2022 | 33,249 |  | 16,787
2021 | 15,512 |  | 8,326
Prior | 29,362 |  | 27,452
Revolving Loans Amortized Cost | 106,238 |  | 108,819
Revolving Loans Converted to Term | 2,427 |  | 1,380
Total loans, net of deferred loan fees and costs | 269,890 |  | 273,913
Commercial and industrial | Special mention |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 810
2024 | 664 |  | 262
2023 | 429 |  | 3,933
2022 | 4,112 |  | 0
2021 | 450 |  | 4,390
Prior | 7,801 |  | 3,673
Revolving Loans Amortized Cost | 7,124 |  | 10,203
Revolving Loans Converted to Term | 2,650 |  | 62
Total loans, net of deferred loan fees and costs | 23,230 |  | 23,333
Commercial and industrial | Substandard |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 99
2024 | 367 |  | 0
2023 | 0 |  | 8
2022 | 4 |  | 733
2021 | 730 |  | 30
Prior | 0 |  | 0
Revolving Loans Amortized Cost | 520 |  | 379
Revolving Loans Converted to Term | 309 |  | 318
Total loans, net of deferred loan fees and costs | 1,930 |  | 1,567
Commercial and industrial | Doubtful |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 21
2024 | 21 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 661 |  | 687
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 682 |  | 708
Commercial Mortgages |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
Total loans, net of deferred loan fees and costs | 1,260,256 |  | 1,217,004
Total gross charge-offs |  |  |
Total | 0 | 0 |
Commercial Mortgages | Construction |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 5,033 |  | 19,344
2024 | 21,401 |  | 46,954
2023 | 39,868 |  | 17,568
2022 | 18,406 |  | 9,058
2021 | 8,996 |  | 0
Prior | 1,484 |  | 1,536
Revolving Loans Amortized Cost | 483 |  | 483
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 95,671 |  | 94,943
Total gross charge-offs |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 |  | 0
Commercial Mortgages | Construction | Pass |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 5,033 |  | 19,344
2024 | 21,401 |  | 46,954
2023 | 39,868 |  | 17,568
2022 | 18,406 |  | 9,058
2021 | 8,996 |  | 0
Prior | 1,484 |  | 1,536
Revolving Loans Amortized Cost | 483 |  | 483
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 95,671 |  | 94,943
Commercial Mortgages | Construction | Special mention |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 0 |  | 0
Commercial Mortgages | Construction | Substandard |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 0 |  | 0
Commercial Mortgages | Construction | Doubtful |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 0 |  | 0
Commercial Mortgages | Owner occupied commercial real estate |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 13,848 |  | 23,196
2024 | 23,872 |  | 23,651
2023 | 23,192 |  | 27,808
2022 | 27,430 |  | 21,409
2021 | 21,110 |  | 9,513
Prior | 42,628 |  | 34,550
Revolving Loans Amortized Cost | 2,896 |  | 2,097
Revolving Loans Converted to Term | 51 |  | 55
Total loans, net of deferred loan fees and costs | 155,027 |  | 142,279
Total gross charge-offs |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 |  | 0
Commercial Mortgages | Owner occupied commercial real estate | Pass |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 13,848 |  | 23,196
2024 | 23,872 |  | 23,185
2023 | 20,294 |  | 26,945
2022 | 24,369 |  | 20,979
2021 | 20,101 |  | 9,513
Prior | 38,794 |  | 31,222
Revolving Loans Amortized Cost | 896 |  | 97
Revolving Loans Converted to Term | 51 |  | 55
Total loans, net of deferred loan fees and costs | 142,225 |  | 135,192
Commercial Mortgages | Owner occupied commercial real estate | Special mention |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 370
2023 | 2,802 |  | 0
2022 | 2,220 |  | 109
2021 | 692 |  | 0
Prior | 2,771 |  | 2,206
Revolving Loans Amortized Cost | 2,000 |  | 2,000
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 10,485 |  | 4,685
Commercial Mortgages | Owner occupied commercial real estate | Substandard |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 96
2023 | 96 |  | 863
2022 | 841 |  | 321
2021 | 317 |  | 0
Prior | 1,051 |  | 1,107
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 2,305 |  | 2,387
Commercial Mortgages | Owner occupied commercial real estate | Doubtful |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 12 |  | 15
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 12 |  | 15
Commercial Mortgages | Non-owner occupied commercial real estate |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 33,419 |  | 97,155
2024 | 101,231 |  | 111,502
2023 | 116,997 |  | 273,361
2022 | 270,832 |  | 149,657
2021 | 148,488 |  | 98,842
Prior | 330,461 |  | 241,792
Revolving Loans Amortized Cost | 7,366 |  | 6,696
Revolving Loans Converted to Term | 764 |  | 777
Total loans, net of deferred loan fees and costs | 1,009,558 |  | 979,782
Total gross charge-offs |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 |  | 0
Commercial Mortgages | Non-owner occupied commercial real estate | Pass |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 33,419 |  | 97,155
2024 | 101,231 |  | 109,354
2023 | 111,244 |  | 267,280
2022 | 263,465 |  | 141,864
2021 | 140,798 |  | 97,828
Prior | 321,071 |  | 233,084
Revolving Loans Amortized Cost | 7,366 |  | 6,696
Revolving Loans Converted to Term | 764 |  | 777
Total loans, net of deferred loan fees and costs | 979,358 |  | 954,038
Commercial Mortgages | Non-owner occupied commercial real estate | Special mention |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 3,586 |  | 5,935
2022 | 7,225 |  | 7,793
2021 | 7,690 |  | 0
Prior | 7,734 |  | 7,833
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 26,235 |  | 21,561
Commercial Mortgages | Non-owner occupied commercial real estate | Substandard |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 2,148
2023 | 2,167 |  | 146
2022 | 142 |  | 0
2021 | 0 |  | 1,014
Prior | 1,656 |  | 875
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 3,965 |  | 4,183
Commercial Mortgages | Non-owner occupied commercial real estate | Doubtful |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 0 |  | 0
Commercial Mortgages | Home equity lines and loans | Special mention |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 |  |  | 0
2024 |  |  | 0
2023 |  |  | 115
2022 |  |  | 0
2021 |  |  | 0
Prior |  |  | 0
Revolving Loans Amortized Cost |  |  | 0
Revolving Loans Converted to Term |  |  | 0
Total loans, net of deferred loan fees and costs |  |  | 115
Residential Mortgages |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 5,205 |  | 21,574
2024 | 23,364 |  | 20,257
2023 | 20,232 |  | 55,406
2022 | 54,258 |  | 55,923
2021 | 54,775 |  | 64,691
Prior | 117,614 |  | 57,128
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 275,448 |  | 274,979
Total gross charge-offs |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 0 |  | 21
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 | 16 | 21
Residential Mortgages | Not rated |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 5,205 |  | 21,574
2024 | 23,364 |  | 20,257
2023 | 20,232 |  | 55,321
2022 | 54,173 |  | 55,152
2021 | 54,150 |  | 64,471
Prior | 116,497 |  | 56,708
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 273,621 |  | 273,483
Residential Mortgages | Substandard |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 85
2022 | 85 |  | 771
2021 | 625 |  | 220
Prior | 1,117 |  | 420
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 1,827 |  | 1,496
Consumer Loans |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
Total loans, net of deferred loan fees and costs | 266,200 |  | 279,915
Total gross charge-offs |  |  |
Total | 393 | $ 351 |
Consumer Loans | Home equity lines and loans |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 3,099 |  | 13,833
2024 | 13,445 |  | 10,681
2023 | 10,097 |  | 14,272
2022 | 13,228 |  | 4,879
2021 | 4,668 |  | 2,503
Prior | 12,299 |  | 10,454
Revolving Loans Amortized Cost | 35,399 |  | 35,131
Revolving Loans Converted to Term | 1,679 |  | 1,467
Total loans, net of deferred loan fees and costs | 93,914 |  | 93,220
Total gross charge-offs |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 1
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 0 |  | 11
Revolving Loans Amortized Cost | 0 |  | 1
Revolving Loans Converted to Term | 0 |  | 0
Total | 0 |  | 13
Consumer Loans | Home equity lines and loans | Not rated |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 3,099 |  | 13,833
2024 | 13,445 |  | 10,657
2023 | 10,074 |  | 14,094
2022 | 12,938 |  | 4,879
2021 | 4,668 |  | 2,503
Prior | 12,109 |  | 10,259
Revolving Loans Amortized Cost | 35,303 |  | 35,015
Revolving Loans Converted to Term | 1,130 |  | 1,252
Total loans, net of deferred loan fees and costs | 92,766 |  | 92,492
Consumer Loans | Home equity lines and loans | Special mention |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  |
2024 | 0 |  |
2023 | 0 |  |
2022 | 114 |  |
2021 | 0 |  |
Prior | 0 |  |
Revolving Loans Amortized Cost | 0 |  |
Revolving Loans Converted to Term | 0 |  |
Total loans, net of deferred loan fees and costs | 114 |  |
Consumer Loans | Home equity lines and loans | Substandard |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 24
2023 | 23 |  | 63
2022 | 176 |  | 0
2021 | 0 |  | 0
Prior | 190 |  | 195
Revolving Loans Amortized Cost | 96 |  | 116
Revolving Loans Converted to Term | 549 |  | 215
Total loans, net of deferred loan fees and costs | 1,034 |  | 613
Consumer Loans | Indirect consumer |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 4,918 |  | 37,821
2024 | 35,301 |  | 52,637
2023 | 47,507 |  | 67,344
2022 | 60,216 |  | 13,345
2021 | 11,357 |  | 4,205
Prior | 5,295 |  | 2,766
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 164,594 |  | 178,118
Total gross charge-offs |  |  |
2025 | 0 |  | 47
2024 | 57 |  | 517
2023 | 178 |  | 525
2022 | 82 |  | 161
2021 | 34 |  | 99
Prior | 28 |  | 116
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 379 |  | 1,465
Consumer Loans | Indirect consumer | Not rated |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 4,918 |  | 37,746
2024 | 35,199 |  | 52,480
2023 | 47,215 |  | 67,237
2022 | 59,984 |  | 13,266
2021 | 11,299 |  | 4,194
Prior | 5,243 |  | 2,726
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 163,858 |  | 177,649
Consumer Loans | Indirect consumer | Substandard |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 75
2024 | 102 |  | 157
2023 | 292 |  | 107
2022 | 232 |  | 79
2021 | 58 |  | 11
Prior | 52 |  | 40
Revolving Loans Amortized Cost | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total loans, net of deferred loan fees and costs | 736 |  | 469
Consumer Loans | Direct consumer |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 494 |  | 2,420
2024 | 2,064 |  | 1,681
2023 | 1,353 |  | 1,454
2022 | 1,181 |  | 275
2021 | 192 |  | 41
Prior | 226 |  | 225
Revolving Loans Amortized Cost | 2,167 |  | 2,465
Revolving Loans Converted to Term | 15 |  | 16
Total loans, net of deferred loan fees and costs | 7,692 |  | 8,577
Total gross charge-offs |  |  |
2025 | 0 |  | 5
2024 | 0 |  | 21
2023 | 8 |  | 20
2022 | 0 |  | 14
2021 | 3 |  | 0
Prior | 1 |  | 4
Revolving Loans Amortized Cost | 2 |  | 8
Revolving Loans Converted to Term | 0 |  | 0
Total | 14 |  | 72
Consumer Loans | Direct consumer | Not rated |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 494 |  | 2,420
2024 | 2,064 |  | 1,681
2023 | 1,346 |  | 1,454
2022 | 1,181 |  | 275
2021 | 192 |  | 41
Prior | 226 |  | 225
Revolving Loans Amortized Cost | 2,157 |  | 2,455
Revolving Loans Converted to Term | 7 |  | 14
Total loans, net of deferred loan fees and costs | 7,667 |  | 8,565
Consumer Loans | Direct consumer | Substandard |  |  |
Term Loans Amortized Cost by Origination Year |  |  |
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 7 |  | 0
2022 | 0 |  | 0
2021 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost | 10 |  | 10
Revolving Loans Converted to Term | 8 |  | 2
Total loans, net of deferred loan fees and costs | $ 25 |  | $ 12

X
- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffByOriginationYearAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossByOriginationYearAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of revolving financing receivable converted to term loan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of revolving financing receivable converted to term loan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6A + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated four years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated three years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated two years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated in fiscal year before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=chmg_CommercialAndIndustrialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=chmg_OwnerOccupiedCommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=chmg_NonOwnerOccupiedCommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=chmg_HomeEquityLinesAndLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=chmg_NotRatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=chmg_IndirectConsumerLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=chmg_DirectConsumerLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |