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LOANS AND ALLOWANCE FOR CREDIT LOSSES (Tables) | 9 Months Ended
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Sep. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Schedule of Loans | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
(in thousands) |  | 2021 |  | 2020
Commercial construction | ​ | $ | 152,700 | ​ | $ | 117,882
Commercial real estate owner occupied | ​ |  | 253,792 | ​ |  | 219,217
Commercial real estate non-owner occupied | ​ |  | 733,353 | ​ |  | 716,776
Tax exempt | ​ |  | 42,448 | ​ |  | 47,862
Commercial and industrial | ​ |  | 336,989 | ​ |  | 355,684
Residential real estate | ​ |  | 917,301 | ​ |  | 995,216
Home equity | ​ |  | 88,002 | ​ |  | 100,096
Consumer other | ​ |  | 9,569 | ​ |  | 10,152
Total loans | ​ |  | 2,534,154 | ​ |  | 2,562,885
Allowance for credit losses | ​ |  | 22,448 | ​ |  | 19,082
Net loans | ​ | $ | 2,511,706 | ​ | $ | 2,543,803
Summary of Unamortized Net Costs and Premiums in Business Activity Loans | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
(in thousands) |  | 2021 |  | 2020
Unamortized net loan origination costs | ​ | $ | 4,015 | ​ | $ | 5,157
Unamortized net premium on purchased loans | ​ |  | (65) | ​ |  | (85)
Total unamortized net costs and premiums | ​ | $ | 3,950 | ​ | $ | 5,072
Schedule of Activity in the Allowance for Loan Losses | The Company’s activity in the allowance for credit losses for the periods ended are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, 2021
​ | ​ | Balance at | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Beginning of | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Balance at
(in thousands) |  | Period |  | Charge Offs |  | Recoveries |  | Provision |  | End of Period
Commercial construction | ​ | $ | 2,372 | ​ | $ | — | ​ | $ | — | ​ | $ | (286) | ​ | $ | 2,086
Commercial real estate owner occupied | ​ |  | 2,552 | ​ |  | (142) | ​ |  | 72 | ​ |  | 237 | ​ |  | 2,719
Commercial real estate non-owner occupied | ​ |  | 5,604 | ​ |  | — | ​ |  | — | ​ |  | (22) | ​ |  | 5,582
Tax exempt | ​ |  | 91 | ​ |  | — | ​ |  | — | ​ |  | (6) | ​ |  | 85
Commercial and industrial | ​ |  | 5,225 | ​ |  | (24) | ​ |  | — | ​ |  | 105 | ​ |  | 5,306
Residential real estate | ​ |  | 6,069 | ​ |  | (6) | ​ |  | 19 | ​ |  | (290) | ​ |  | 5,792
Home equity | ​ |  | 822 | ​ |  | (49) | ​ |  | 1 | ​ |  | 30 | ​ |  | 804
Consumer other | ​ |  | 80 | ​ |  | (65) | ​ |  | 1 | ​ |  | 58 | ​ |  | 74
Total | ​ | $ | 22,815 | ​ | $ | (286) | ​ | $ | 93 | ​ | $ | (174) | ​ | $ | 22,448
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine Months Ended September 30, 2021
​ | ​ | Balance at | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Beginning of | ​ | Impact of ASC | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Balance at
(in thousands) |  | Period |  | 326 |  | Charge Offs |  | Recoveries |  | Provision |  | End of Period
Commercial construction | ​ | $ | 824 | ​ | $ | 1,196 | ​ | $ | — | ​ | $ | 18 | ​ | $ | 48 | ​ | $ | 2,086
Commercial real estate owner occupied | ​ |  | 1,783 | ​ |  | 708 | ​ |  | (403) | ​ |  | 72 | ​ |  | 559 | ​ |  | 2,719
Commercial real estate non-owner occupied | ​ |  | 7,864 | ​ |  | (2,008) | ​ |  | — | ​ |  | 4 | ​ |  | (278) | ​ |  | 5,582
Tax exempt | ​ |  | 58 | ​ |  | 40 | ​ |  | — | ​ |  | — | ​ |  | (13) | ​ |  | 85
Commercial and industrial | ​ |  | 3,137 | ​ |  | 2,996 | ​ |  | (44) | ​ |  | 14 | ​ |  | (797) | ​ |  | 5,306
Residential real estate | ​ |  | 5,010 | ​ |  | 1,732 | ​ |  | (67) | ​ |  | 141 | ​ |  | (1,024) | ​ |  | 5,792
Home equity | ​ |  | 285 | ​ |  | 603 | ​ |  | (108) | ​ |  | 48 | ​ |  | (24) | ​ |  | 804
Consumer other | ​ |  | 121 | ​ |  | (39) | ​ |  | (119) | ​ |  | 10 | ​ |  | 101 | ​ |  | 74
Total | ​ | $ | 19,082 | ​ | $ | 5,228 | ​ | $ | (741) | ​ | $ | 307 | ​ | $ | (1,428) | ​ | $ | 22,448
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, 2020
​ | ​ | Balance at | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Beginning of | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Balance at
(in thousands) |  | Period |  | Charge Offs |  | Recoveries |  | Provision |  | End of Period
Commercial construction | ​ | $ | 532 | ​ | $ | — | ​ | $ | — | ​ | $ | 185 | ​ | $ | 717
Commercial real estate owner occupied | ​ |  | 1,524 | ​ |  | — | ​ |  | — | ​ |  | 370 | ​ |  | 1,894
Commercial real estate non-owner occupied | ​ |  | 5,926 | ​ |  | (266) | ​ |  | 14 | ​ |  | 783 | ​ |  | 6,457
Tax exempt | ​ |  | 64 | ​ |  | — | ​ |  | — | ​ |  | 4 | ​ |  | 68
Commercial and industrial | ​ |  | 3,056 | ​ |  | (24) | ​ |  | 14 | ​ |  | 236 | ​ |  | 3,282
Residential real estate | ​ |  | 4,991 | ​ |  | — | ​ |  | 1 | ​ |  | 86 | ​ |  | 5,078
Home equity | ​ |  | 318 | ​ |  | — | ​ |  | — | ​ |  | (4) | ​ |  | 314
Consumer other | ​ |  | 98 | ​ |  | (149) | ​ |  | 8 | ​ |  | 140 | ​ |  | 97
Total | ​ | $ | 16,509 | ​ | $ | (439) | ​ | $ | 37 | ​ | $ | 1,800 | ​ | $ | 17,907
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​
​ | ​ | Nine Months Ended September 30, 2020
​ | ​ | Balance at | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Beginning of | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Balance at
(in thousands) |  | Period |  | Charge Offs |  | Recoveries |  | Provision |  | End of Period
Commercial construction | ​ | $ | 317 | ​ | $ | — | ​ | $ | — | ​ | $ | 400 | ​ | $ | 717
Commercial real estate owner occupied | ​ |  | 2,368 | ​ |  | — | ​ |  | — | ​ |  | (474) | ​ |  | 1,894
Commercial real estate non-owner occupied | ​ |  | 4,695 | ​ |  | (1,137) | ​ |  | 109 | ​ |  | 2,790 | ​ |  | 6,457
Tax exempt | ​ |  | 67 | ​ |  | — | ​ |  | — | ​ |  | 1 | ​ |  | 68
Commercial and industrial | ​ |  | 3,262 | ​ |  | (360) | ​ | ​ | 25 | ​ |  | 355 | ​ |  | 3,282
Residential real estate | ​ |  | 4,213 | ​ |  | (32) | ​ |  | 12 | ​ |  | 885 | ​ |  | 5,078
Home equity | ​ |  | 320 | ​ |  | — | ​ |  | — | ​ |  | (6) | ​ |  | 314
Consumer other | ​ |  | 111 | ​ |  | (341) | ​ |  | 13 | ​ |  | 314 | ​ |  | 97
Total | ​ | $ | 15,353 | ​ | $ | (1,870) | ​ | $ | 159 | ​ | $ | 4,265 | ​ | $ | 17,907
Schedule of Loans by Risk Rating | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
(in thousands) | ​ | 2021 | ​ | 2020 | ​ | 2019 | ​ | 2018 | ​ | 2017 | ​ | Prior | ​ | Total
Commercial construction |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Risk rating: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Pass | ​ | $ | 22,192 | ​ | $ | 76,226 | ​ | $ | 44,453 | ​ | $ | 9,829 | ​ | $ | — | ​ | $ | — | ​ | $ | 152,700
Special mention | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Substandard | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Total | ​ | $ | 22,192 | ​ | $ | 76,226 | ​ | $ | 44,453 | ​ | $ | 9,829 | ​ | $ | — | ​ | $ | — | ​ | $ | 152,700
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Commercial real estate owner occupied | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Risk rating: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Pass | ​ | $ | 9,937 | ​ | $ | 16,003 | ​ | $ | 35,366 | ​ | $ | 47,026 | ​ | $ | 20,038 | ​ | $ | 110,663 | ​ | $ | 239,033
Special mention | ​ |  | — | ​ |  | — | ​ |  | 767 | ​ |  | — | ​ |  | — | ​ |  | 3,125 | ​ |  | 3,892
Substandard | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 248 | ​ |  | 248 | ​ |  | 10,030 | ​ |  | 10,526
Doubtful | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 172 | ​ | ​ | — | ​ | ​ | 169 | ​ | ​ | 341
Total | ​ | $ | 9,937 | ​ | $ | 16,003 | ​ | $ | 36,133 | ​ | $ | 47,446 | ​ | $ | 20,286 | ​ | $ | 123,987 | ​ | $ | 253,792
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Commercial real estate non-owner occupied | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Risk rating: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Pass | ​ | $ | 101,706 | ​ | $ | 147,754 | ​ | $ | 90,963 | ​ | $ | 40,545 | ​ | $ | 147,197 | ​ | $ | 186,056 | ​ | $ | 714,221
Special mention | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 15,612 | ​ |  | 15,612
Substandard | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 131 | ​ |  | 131 | ​ |  | 3,086 | ​ |  | 3,348
Doubtful | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 172 | ​ | ​ | 172
Total | ​ | $ | 101,706 | ​ | $ | 147,754 | ​ | $ | 90,963 | ​ | $ | 40,676 | ​ | $ | 147,328 | ​ | $ | 204,926 | ​ | $ | 733,353
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Tax exempt | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Risk rating: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Pass | ​ | $ | 1,511 | ​ | $ | 604 | ​ | $ | 975 | ​ | $ | 14,453 | ​ | $ | 5,387 | ​ | $ | 19,518 | ​ | $ | 42,448
Special mention | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Substandard | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Total | ​ | $ | 1,511 | ​ | $ | 604 | ​ | $ | 975 | ​ | $ | 14,453 | ​ | $ | 5,387 | ​ | $ | 19,518 | ​ | $ | 42,448
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Commercial and industrial | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Risk rating: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Pass | ​ | $ | 104,179 | ​ | $ | 64,303 | ​ | $ | 36,010 | ​ | $ | 17,635 | ​ | $ | 35,407 | ​ | $ | 73,972 | ​ | $ | 331,506
Special mention | ​ |  | 619 | ​ |  | 222 | ​ |  | 717 | ​ |  | 596 | ​ |  | 202 | ​ |  | 1,429 | ​ |  | 3,785
Substandard | ​ |  | 98 | ​ |  | — | ​ |  | 549 | ​ |  | 14 | ​ |  | 50 | ​ |  | 677 | ​ |  | 1,388
Doubtful | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 122 | ​ | ​ | 188 | ​ | ​ | 310
Total | ​ | $ | 104,896 | ​ | $ | 64,525 | ​ | $ | 37,276 | ​ | $ | 18,245 | ​ | $ | 35,781 | ​ | $ | 76,266 | ​ | $ | 336,989
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(continued)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) | ​ | 2021 | ​ | 2020 | ​ | 2019 | ​ | 2018 | ​ | 2017 | ​ | Prior | ​ | Total
Residential real estate |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Performing | ​ | $ | 143,071 | ​ | $ | 126,171 | ​ | $ | 95,942 | ​ | $ | 70,062 | ​ | $ | 69,486 | ​ | $ | 404,395 | ​ | $ | 909,127
Nonperforming | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 576 | ​ |  | 183 | ​ |  | 7,415 | ​ |  | 8,174
Total | ​ | $ | 143,071 | ​ | $ | 126,171 | ​ | $ | 95,942 | ​ | $ | 70,638 | ​ | $ | 69,669 | ​ | $ | 411,810 | ​ | $ | 917,301
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Home equity | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Performing | ​ | $ | 8,227 | ​ | $ | 10,946 | ​ | $ | 9,775 | ​ | $ | 7,647 | ​ | $ | 6,975 | ​ | $ | 43,133 | ​ | $ | 86,703
Nonperforming | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 1,299 | ​ |  | 1,299
Total | ​ | $ | 8,227 | ​ | $ | 10,946 | ​ | $ | 9,775 | ​ | $ | 7,647 | ​ | $ | 6,975 | ​ | $ | 44,432 | ​ | $ | 88,002
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Consumer other | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Performing | ​ | $ | 3,037 | ​ | $ | 1,942 | ​ | $ | 1,023 | ​ | $ | 803 | ​ | $ | 329 | ​ | $ | 2,429 | ​ | $ | 9,563
Nonperforming | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 6 | ​ |  | 6
Total | ​ | $ | 3,037 | ​ | $ | 1,942 | ​ | $ | 1,023 | ​ | $ | 803 | ​ | $ | 329 | ​ | $ | 2,435 | ​ | $ | 9,569
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Loans | ​ | $ | 394,577 | ​ | $ | 444,171 | ​ | $ | 316,540 | ​ | $ | 209,737 | ​ | $ | 285,755 | ​ | $ | 883,374 | ​ | $ | 2,534,154
​ The following table summarizes credit risk exposure indicators by portfolio segment, under the incurred loss methodology, as of the period indicated: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2020
​ | ​ | Commercial | ​ | Commercial | ​ | Residential | ​ |  | ​ | ​ |  | ​
​ | ​ | Real Estate | ​ | and Industrial | ​ | Real Estate | ​ | Consumer | ​ | Total
Grade: |  | ​ |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | ​
Pass |  | $ | 1,053,773 | ​ | $ | 422,016 | ​ | $ | — | ​ | $ | — | ​ | $ | 1,475,789
Performing | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 914,749 | ​ | ​ | 112,190 | ​ | ​ | 1,026,939
Special mention |  | ​ | 6,075 | ​ | ​ | 2,771 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 8,846
Substandard |  | ​ | 22,267 | ​ | ​ | 15,180 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 37,447
Doubtful |  | ​ | 2,265 | ​ | ​ | 1,100 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 3,365
Loss |  | ​ | 1 | ​ | ​ | 2 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 3
Non-performing | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 9,142 | ​ | ​ | 1,354 | ​ | ​ | 10,496
Total |  | $ | 1,084,381 | ​ | $ | 441,069 | ​ | $ | 923,891 | ​ | $ | 113,544 | ​ | $ | 2,562,885
Summary of Past Due Loans | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021
(in thousands) |  | 30-59 |  | 60-89 |  | 90+ |  | Total Past Due |  | Current |  | Total Loans
Commercial construction | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | 152,700 | ​ | $ | 152,700
Commercial real estate owner occupied | ​ |  | — | ​ |  | 10 | ​ |  | 627 | ​ |  | 637 | ​ |  | 253,155 | ​ |  | 253,792
Commercial real estate non-owner occupied | ​ |  | 314 | ​ |  | — | ​ |  | 117 | ​ |  | 431 | ​ |  | 732,922 | ​ |  | 733,353
Tax exempt | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 42,448 | ​ |  | 42,448
Commercial and industrial | ​ |  | 44 | ​ |  | 35 | ​ |  | 313 | ​ |  | 392 | ​ |  | 336,597 | ​ |  | 336,989
Residential real estate | ​ |  | 414 | ​ |  | 1,007 | ​ |  | 2,796 | ​ |  | 4,217 | ​ |  | 913,084 | ​ |  | 917,301
Home equity | ​ |  | 344 | ​ |  | 95 | ​ |  | 62 | ​ |  | 501 | ​ |  | 87,501 | ​ |  | 88,002
Consumer other | ​ |  | 32 | ​ |  | 2 | ​ |  | — | ​ |  | 34 | ​ |  | 9,535 | ​ |  | 9,569
Total | ​ | $ | 1,148 | ​ | $ | 1,149 | ​ | $ | 3,915 | ​ | $ | 6,212 | ​ | $ | 2,527,942 | ​ | $ | 2,534,154
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2020
(in thousands) |  | 30-59 |  | 60-89 |  | 90+ |  | Total Past Due |  | Current |  | Total Loans
Commercial construction | ​ | $ | 74 | ​ | $ | — | ​ | $ | 1 | ​ | $ | 75 | ​ | $ | 117,807 | ​ | $ | 117,882
Commercial real estate owner occupied | ​ |  | 1,309 | ​ |  | 464 | ​ |  | 438 | ​ |  | 2,211 | ​ |  | 217,006 | ​ |  | 219,217
Commercial real estate non-owner occupied | ​ |  | 503 | ​ |  | 674 | ​ |  | 624 | ​ |  | 1,801 | ​ |  | 714,975 | ​ |  | 716,776
Tax exempt | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 47,862 | ​ |  | 47,862
Commercial and industrial | ​ |  | 161 | ​ |  | — | ​ |  | 193 | ​ |  | 354 | ​ |  | 355,330 | ​ |  | 355,684
Residential real estate | ​ |  | 9,178 | ​ |  | 2,511 | ​ |  | 3,200 | ​ |  | 14,889 | ​ |  | 980,327 | ​ |  | 995,216
Home equity | ​ |  | 1,062 | ​ |  | 614 | ​ |  | 375 | ​ |  | 2,051 | ​ |  | 98,045 | ​ |  | 100,096
Consumer other | ​ |  | 20 | ​ |  | — | ​ |  | 2 | ​ |  | 22 | ​ |  | 10,130 | ​ |  | 10,152
Total | ​ | $ | 12,307 | ​ | $ | 4,263 | ​ | $ | 4,833 | ​ | $ | 21,403 | ​ | $ | 2,541,482 | ​ | $ | 2,562,885
Summary of Non-Accrual Loans | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021
​ | ​ | ​ | ​ | ​ | Nonaccrual With No | ​ | 90+ Days Past
(in thousands) |  | Nonaccrual |  | Related Allowance |  | Due and Accruing
Commercial construction | ​ | $ | — | ​ | $ | — | ​ | $ | —
Commercial real estate owner occupied | ​ |  | 1,184 | ​ |  | 808 | ​ |  | 366
Commercial real estate non-owner occupied | ​ |  | 770 | ​ |  | 314 | ​ |  | —
Tax exempt | ​ |  | — | ​ |  | — | ​ |  | —
Commercial and industrial | ​ |  | 775 | ​ |  | 629 | ​ |  | 149
Residential real estate | ​ |  | 8,174 | ​ |  | 3,217 | ​ |  | 105
Home equity | ​ |  | 1,298 | ​ |  | 316 | ​ |  | —
Consumer other | ​ |  | 6 | ​ |  | — | ​ |  | —
Total | ​ | $ | 12,207 | ​ | $ | 5,284 | ​ | $ | 620
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2020
​ | ​ | ​ | ​ | ​ | Nonaccrual With No | ​ | 90+ Days Past
(in thousands) |  | Nonaccrual |  | Related Allowance |  | Due and Accruing
Commercial construction | ​ | $ | 258 | ​ | $ | — | ​ | $ | —
Commercial real estate owner occupied | ​ |  | 3,038 | ​ |  | 929 | ​ |  | —
Commercial real estate non-owner occupied | ​ |  | 383 | ​ |  | 118 | ​ |  | —
Tax exempt | ​ |  | — | ​ |  | — | ​ |  | —
Commercial and industrial | ​ |  | 1,223 | ​ |  | 1,065 | ​ |  | —
Residential real estate | ​ |  | 5,883 | ​ |  | 4,948 | ​ |  | —
Home equity | ​ |  | 1,345 | ​ |  | 1,346 | ​ |  | 267
Consumer other | ​ |  | 58 | ​ |  | 58 | ​ |  | —
Total | ​ | $ | 12,188 | ​ | $ | 8,464 | ​ | $ | 267
Schedule of amortized cost basis of collateral-dependent loans | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021 | ​ | December 31, 2020
(in thousands) |  | Real Estate |  | Other |  | Real Estate |  | Other
Commercial construction | ​ | $ | — | ​ | $ | — | ​ | $ | 259 | ​ | $ | —
Commercial real estate owner occupied | ​ |  | 1,184 | ​ |  | — | ​ |  | 3,441 | ​ |  | —
Commercial real estate non-owner occupied | ​ |  | 770 | ​ |  | — | ​ |  | 383 | ​ |  | —
Tax exempt | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Commercial and industrial | ​ |  | 436 | ​ |  | 339 | ​ |  | 625 | ​ |  | 607
Residential real estate | ​ |  | 8,174 | ​ |  | — | ​ |  | 7,432 | ​ |  | —
Home equity | ​ |  | 1,298 | ​ |  | — | ​ |  | 1,493 | ​ |  | —
Consumer other | ​ |  | 6 | ​ |  | — | ​ |  | 60 | ​ |  | —
Total | ​ | $ | 11,868 | ​ | $ | 339 | ​ | $ | 13,693 | ​ | $ | 607
Summary of Impaired Loans | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2020
​ | ​ | Recorded |  | Unpaid Principal |  | Related |  | Average Recorded |  | Interest
(in thousands) | ​ | Investment | ​ | Balance | ​ | Allowance | ​ | Investment | ​ | Income Recognized
With no related allowance: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Construction and land development | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | —
Other commercial real estate | ​ |  | 2,001 | ​ |  | 2,047 | ​ |  | — | ​ |  | 1,610 | ​ |  | —
Commercial | ​ |  | 1,095 | ​ |  | 1,254 | ​ |  | — | ​ |  | 1,140 | ​ |  | 4
Agricultural | ​ |  | 361 | ​ |  | 150 | ​ |  | — | ​ |  | 114 | ​ |  | 2
Tax exempt loans | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Residential real estate | ​ |  | 2,745 | ​ |  | 3,165 | ​ |  | — | ​ |  | 1,077 | ​ |  | 17
Home equity | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Other consumer | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
With an allowance recorded: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Construction and land development | ​ |  | 258 | ​ |  | 258 | ​ |  | 205 | ​ |  | 203 | ​ |  | —
Other commercial real estate | ​ |  | 1,963 | ​ |  | 2,108 | ​ |  | 1,038 | ​ |  | 1,973 | ​ |  | 17
Commercial | ​ |  | 282 | ​ |  | 289 | ​ |  | 164 | ​ |  | 73 | ​ |  | —
Agricultural | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Tax exempt loans | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Residential real estate | ​ |  | 887 | ​ |  | 944 | ​ |  | 106 | ​ |  | 1,865 | ​ |  | 37
Home equity | ​ |  | 13 | ​ |  | 13 | ​ |  | — | ​ |  | 12 | ​ |  | 1
Other consumer | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Commercial real estate | ​ |  | 4,222 | ​ |  | 4,413 | ​ |  | 1,243 | ​ |  | 3,786 | ​ |  | 17
Commercial and industrial | ​ |  | 1,738 | ​ |  | 1,693 | ​ |  | 164 | ​ |  | 1,327 | ​ |  | 6
Residential real estate | ​ |  | 3,632 | ​ |  | 4,109 | ​ |  | 106 | ​ |  | 2,942 | ​ |  | 54
Consumer | ​ |  | 13 | ​ |  | 13 | ​ |  | — | ​ |  | 12 | ​ |  | 1
Total impaired loans | ​ | $ | 9,605 | ​ | $ | 10,228 | ​ | $ | 1,513 | ​ | $ | 8,067 | ​ | $ | 78
Schedule of Recorded Investment and Number of Modifications for TDRs | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, 2020
​ | ​ | ​ | ​ | Pre-Modification | ​ | Post-Modification | ​ | ​ | ​
​ | ​ | Number of | ​ | Outstanding | ​ | Outstanding | ​ | ​ | ​
(in thousands) |  | Modifications |  | Balance |  | Balance |  | Reserve
Commercial and industrial |  | 1 | ​ |  | 86 | ​ |  | 86 | ​ |  | —
Total |  | 1 | ​ | $ | 86 | ​ | $ | 86 | ​ | $ | —
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine Months Ended September 30, 2020
​ | ​ | ​ | ​ | Pre-Modification | ​ | Post-Modification | ​ | ​ | ​
​ | ​ | Number of | ​ | Outstanding | ​ | Outstanding | ​ | ​ | ​
(in thousands) |  | Modifications |  | Balance |  | Balance |  | Reserve
Commercial construction | ​ | — | ​ | $ | — | ​ | $ | — | ​ | $ | —
Commercial real estate owner occupied |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Commercial real estate non-owner occupied |  | 1 | ​ |  | 54 | ​ |  | 247 | ​ |  | —
Tax exempt |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Commercial and industrial |  | 4 | ​ |  | 127 | ​ |  | 248 | ​ |  | —
Residential real estate |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Home equity |  | 1 | ​ |  | 26 | ​ |  | 24 | ​ |  | —
Consumer other |  | 1 | ​ |  | 9 | ​ |  | 9 | ​ |  | —
Total |  | 7 | ​ | $ | 216 | ​ | $ | 528 | ​ | $ | —
​
Summary of Loan Concessions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021 | ​ | September 30, 2020
​ |  | ​ |  | Post-Modification |  | ​ |  | Post-Modification
​ | ​ | Number of | ​ | Outstanding | ​ | Number of | ​ | Outstanding
(in thousands) | ​ | Modifications | ​ | Balance | ​ | Modifications | ​ | Balance
Interest rate, forbearance and maturity concession |  | — | ​ | $ | — |  | 4 | ​ | $ | 409
Forbearance and interest only payments |  | — | ​ |  | — |  | 1 | ​ |  | 24
Maturity concession |  | — | ​ |  | — |  | 2 | ​ |  | 95
Total |  | — | ​ | $ | — |  | 7 | ​ | $ | 528
Unfunded Loan Commitment |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Schedule of Activity in the Allowance for Loan Losses | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) | ​ | Three Months Ended September 30, 2021 |  | Nine Months Ended September 30, 2021
Begininng Balance | ​ | $ | 1,921 | ​ | $ | 359
Impact of CECL adoption | ​ | ​ | — | ​ | ​ | 1,616
Provision for credit losses | ​ |  | 280 | ​ |  | 226
Ending Balance | ​ | $ | 2,201 | ​ | $ | 2,201
​
​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) | ​ | Three Months Ended September 30, 2020 |  | Nine Months Ended September 30, 2020
Begininng Balance | ​ | $ | 319 | ​ | $ | 314
Provision for credit losses | ​ |  | 2 | ​ |  | 7
Ending Balance | ​ | $ | 321 | ​ | $ | 321

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