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Allowance for Loan Losses - Activity by Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 11,639 |  |  |  | $ 11,232 | $ 11,639 | $ 11,232 | $ 10,729
Chargeoffs |  |  |  |  |  |  |  |  | 1,661 | 1,120 | 1,273
Recoveries |  |  |  |  |  |  |  |  | 225 | 277 | 276
Provision for loan losses | $ 1,500 | $ 1,800 | $ 2,350 | 400 | $ 375 | $ 250 | $ 250 | 375 | 6,050 | 1,250 | 1,500
Ending balance | 16,253 |  |  |  | 11,639 |  |  |  | 16,253 | 11,639 | 11,232
Ending balance specifically evaluated for impairment | 462 |  |  |  | 2,213 |  |  |  | 462 | 2,213 | 2,308
Ending balance collectively evaluated for impairment | 15,791 |  |  |  | 9,426 |  |  |  | 15,791 | 9,426 | 8,924
Ending balance | 1,476,761 |  |  |  | 1,297,075 |  |  |  | 1,476,761 | 1,297,075 | 1,238,283
Ending balance specifically evaluated for impairment | 16,039 |  |  |  | 29,274 |  |  |  | 16,039 | 29,274 | 31,751
Ending balance collectively evaluated for impairment | 1,460,722 |  |  |  | 1,267,801 |  |  |  | 1,460,722 | 1,267,801 | 1,206,532
Commercial | Real estate |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 3,742 |  |  |  | 3,567 | 3,742 | 3,567 | 3,872
Chargeoffs |  |  |  |  |  |  |  |  | 1,088 | 89 | 168
Recoveries |  |  |  |  |  |  |  |  | 0 | 15 | 52
Provision for loan losses |  |  |  |  |  |  |  |  | 2,524 | 249 | (189)
Ending balance | 5,178 |  |  |  | 3,742 |  |  |  | 5,178 | 3,742 | 3,567
Ending balance specifically evaluated for impairment | 112 |  |  |  | 251 |  |  |  | 112 | 251 | 260
Ending balance collectively evaluated for impairment | 5,066 |  |  |  | 3,491 |  |  |  | 5,066 | 3,491 | 3,307
Ending balance | 442,121 |  |  |  | 372,810 |  |  |  | 442,121 | 372,810 | 353,243
Ending balance specifically evaluated for impairment | 3,029 |  |  |  | 6,309 |  |  |  | 3,029 | 6,309 | 9,760
Ending balance collectively evaluated for impairment | 439,092 |  |  |  | 366,501 |  |  |  | 439,092 | 366,501 | 343,483
Commercial | Construction |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 365 |  |  |  | 255 | 365 | 255 | 434
Chargeoffs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision for loan losses |  |  |  |  |  |  |  |  | 297 | 110 | (179)
Ending balance | 662 |  |  |  | 365 |  |  |  | 662 | 365 | 255
Ending balance specifically evaluated for impairment | 18 |  |  |  | 0 |  |  |  | 18 | 0 | 0
Ending balance collectively evaluated for impairment | 644 |  |  |  | 365 |  |  |  | 644 | 365 | 255
Ending balance | 56,565 |  |  |  | 38,084 |  |  |  | 56,565 | 38,084 | 27,304
Ending balance specifically evaluated for impairment | 770 |  |  |  | 958 |  |  |  | 770 | 958 | 721
Ending balance collectively evaluated for impairment | 55,795 |  |  |  | 37,126 |  |  |  | 55,795 | 37,126 | 26,583
Commercial | Other |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 3,329 |  |  |  | 3,541 | 3,329 | 3,541 | 3,358
Chargeoffs |  |  |  |  |  |  |  |  | 27 | 179 | 423
Recoveries |  |  |  |  |  |  |  |  | 37 | 73 | 40
Provision for loan losses |  |  |  |  |  |  |  |  | 99 | (106) | 566
Ending balance | 3,438 |  |  |  | 3,329 |  |  |  | 3,438 | 3,329 | 3,541
Ending balance specifically evaluated for impairment | 169 |  |  |  | 1,273 |  |  |  | 169 | 1,273 | 1,696
Ending balance collectively evaluated for impairment | 3,269 |  |  |  | 2,056 |  |  |  | 3,269 | 2,056 | 1,845
Ending balance | 285,015 |  |  |  | 218,773 |  |  |  | 285,015 | 218,773 | 196,391
Ending balance specifically evaluated for impairment | 1,779 |  |  |  | 7,075 |  |  |  | 1,779 | 7,075 | 9,259
Ending balance collectively evaluated for impairment | 283,236 |  |  |  | 211,698 |  |  |  | 283,236 | 211,698 | 187,132
Municipal |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 27 |  |  |  | 24 | 27 | 24 | 20
Chargeoffs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision for loan losses |  |  |  |  |  |  |  |  | 144 | 3 | 4
Ending balance | 171 |  |  |  | 27 |  |  |  | 171 | 27 | 24
Ending balance specifically evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Ending balance collectively evaluated for impairment | 171 |  |  |  | 27 |  |  |  | 171 | 27 | 24
Ending balance | 43,783 |  |  |  | 41,288 |  |  |  | 43,783 | 41,288 | 51,128
Ending balance specifically evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Ending balance collectively evaluated for impairment | 43,783 |  |  |  | 41,288 |  |  |  | 43,783 | 41,288 | 51,128
Residential | Construction |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 25 |  |  |  | 34 | 25 | 34 | 36
Chargeoffs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision for loan losses |  |  |  |  |  |  |  |  | 77 | (9) | (2)
Ending balance | 102 |  |  |  | 25 |  |  |  | 102 | 25 | 34
Ending balance specifically evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Ending balance collectively evaluated for impairment | 102 |  |  |  | 25 |  |  |  | 102 | 25 | 34
Ending balance | 21,600 |  |  |  | 14,813 |  |  |  | 21,600 | 14,813 | 17,743
Ending balance specifically evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Ending balance collectively evaluated for impairment | 21,600 |  |  |  | 14,813 |  |  |  | 21,600 | 14,813 | 17,743
Residential | Term |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 1,024 |  |  |  | 1,235 | 1,024 | 1,235 | 1,130
Chargeoffs |  |  |  |  |  |  |  |  | 66 | 445 | 213
Recoveries |  |  |  |  |  |  |  |  | 34 | 57 | 64
Provision for loan losses |  |  |  |  |  |  |  |  | 1,587 | 177 | 254
Ending balance | 2,579 |  |  |  | 1,024 |  |  |  | 2,579 | 1,024 | 1,235
Ending balance specifically evaluated for impairment | 163 |  |  |  | 237 |  |  |  | 163 | 237 | 335
Ending balance collectively evaluated for impairment | 2,416 |  |  |  | 787 |  |  |  | 2,416 | 787 | 900
Ending balance | 522,070 |  |  |  | 492,455 |  |  |  | 522,070 | 492,455 | 469,145
Ending balance specifically evaluated for impairment | 9,414 |  |  |  | 12,439 |  |  |  | 9,414 | 12,439 | 10,904
Ending balance collectively evaluated for impairment | 512,656 |  |  |  | 480,016 |  |  |  | 512,656 | 480,016 | 458,241
Home equity line of credit |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 1,078 |  |  |  | 730 | 1,078 | 730 | 692
Chargeoffs |  |  |  |  |  |  |  |  | 153 | 69 | 121
Recoveries |  |  |  |  |  |  |  |  | 22 | 4 | 24
Provision for loan losses |  |  |  |  |  |  |  |  | 264 | 413 | 135
Ending balance | 1,211 |  |  |  | 1,078 |  |  |  | 1,211 | 1,078 | 730
Ending balance specifically evaluated for impairment | 0 |  |  |  | 447 |  |  |  | 0 | 447 | 17
Ending balance collectively evaluated for impairment | 1,211 |  |  |  | 631 |  |  |  | 1,211 | 631 | 713
Ending balance | 79,750 |  |  |  | 92,349 |  |  |  | 79,750 | 92,349 | 98,469
Ending balance specifically evaluated for impairment | 1,039 |  |  |  | 2,488 |  |  |  | 1,039 | 2,488 | 1,092
Ending balance collectively evaluated for impairment | 78,711 |  |  |  | 89,861 |  |  |  | 78,711 | 89,861 | 97,377
Consumer |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 867 |  |  |  | 630 | 867 | 630 | 545
Chargeoffs |  |  |  |  |  |  |  |  | 327 | 338 | 348
Recoveries |  |  |  |  |  |  |  |  | 132 | 128 | 96
Provision for loan losses |  |  |  |  |  |  |  |  | 106 | 447 | 337
Ending balance | 778 |  |  |  | 867 |  |  |  | 778 | 867 | 630
Ending balance specifically evaluated for impairment | 0 |  |  |  | 5 |  |  |  | 0 | 5 | 0
Ending balance collectively evaluated for impairment | 778 |  |  |  | 862 |  |  |  | 778 | 862 | 630
Ending balance | 25,857 |  |  |  | 26,503 |  |  |  | 25,857 | 26,503 | 24,860
Ending balance specifically evaluated for impairment | 8 |  |  |  | 5 |  |  |  | 8 | 5 | 15
Ending balance collectively evaluated for impairment | 25,849 |  |  |  | 26,498 |  |  |  | 25,849 | 26,498 | 24,845
Unallocated |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 1,182 |  |  |  | $ 1,216 | 1,182 | 1,216 | 642
Chargeoffs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision for loan losses |  |  |  |  |  |  |  |  | 952 | (34) | 574
Ending balance | 2,134 |  |  |  | 1,182 |  |  |  | 2,134 | 1,182 | 1,216
Ending balance specifically evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Ending balance collectively evaluated for impairment | 2,134 |  |  |  | 1,182 |  |  |  | 2,134 | 1,182 | 1,216
Ending balance | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Ending balance specifically evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Ending balance collectively evaluated for impairment | $ 0 |  |  |  | $ 0 |  |  |  | $ 0 | $ 0 | $ 0

X
- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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