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Loans and Allowance for Credit Losses on Loans - Credit Quality Indicators (Details) - USD ($) | Dec. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Loans |  |  |
2020 | $ 979,432,000 |  |
2019 | 309,922,000 |  |
2018 | 191,961,000 |  |
2017 | 202,725,000 |  |
2016 | 163,654,000 |  |
2015 and Prior | 326,918,000 |  |
Revolving | 451,375,000 |  |
Total loan balance | 2,625,987,000 | $ 31,855,000 | $ 2,534,163,000
Balance to report | 2,574,861,000 |  | 2,510,559,000
Loan classified as loss |  |  |
Loans |  |  |
Balance to report | 0 |  | 0
Commercial |  |  |
Loans |  |  |
2020 | 453,231,000 |  |
2019 | 34,122,000 |  |
2018 | 22,510,000 |  |
2017 | 15,551,000 |  |
2016 | 10,565,000 |  |
2015 and Prior | 8,561,000 |  |
Revolving | 301,846,000 |  |
Total loan balance | 846,386,000 | 6,790,000 | 603,345,000
Commercial | Pass [Member] |  |  |
Loans |  |  |
2020 | 431,369,000 |  |
2019 | 33,350,000 |  |
2018 | 21,154,000 |  |
2017 | 13,840,000 |  |
2016 | 7,341,000 |  |
2015 and Prior | 8,292,000 |  |
Revolving | 296,286,000 |  |
Total loan balance | 811,632,000 |  |
Commercial | Special Mention [Member] |  |  |
Loans |  |  |
2020 | 15,720,000 |  |
2019 | 716,000 |  |
2018 | 1,301,000 |  |
2017 | 953,000 |  |
2016 | 713,000 |  |
2015 and Prior | 170,000 |  |
Revolving | 1,937,000 |  |
Total loan balance | 21,510,000 |  |
Commercial | Substandard [Member] |  |  |
Loans |  |  |
2020 | 4,036,000 |  |
2018 | 19,000 |  |
2017 | 758,000 |  |
2016 | 2,396,000 |  |
2015 and Prior | 73,000 |  |
Revolving | 3,236,000 |  |
Total loan balance | 10,518,000 |  |
Commercial | Substandard-Nonaccrual [Member] |  |  |
Loans |  |  |
2020 | 2,106,000 |  |
2019 | 56,000 |  |
2018 | 36,000 |  |
2016 | 115,000 |  |
2015 and Prior | 26,000 |  |
Revolving | 387,000 |  |
Total loan balance | 2,726,000 |  |
CRE - owner occupied |  |  |
Loans |  |  |
2020 | 177,614,000 |  |
2019 | 75,632,000 |  |
2018 | 72,596,000 |  |
2017 | 55,442,000 |  |
2016 | 50,716,000 |  |
2015 and Prior | 112,398,000 |  |
Revolving | 15,964,000 |  |
Total loan balance | 560,362,000 | 6,994,000 | 548,907,000
CRE - owner occupied | Pass [Member] |  |  |
Loans |  |  |
2020 | 168,224,000 |  |
2019 | 73,064,000 |  |
2018 | 68,068,000 |  |
2017 | 51,705,000 |  |
2016 | 50,716,000 |  |
2015 and Prior | 109,350,000 |  |
Revolving | 15,964,000 |  |
Total loan balance | 537,091,000 |  |
CRE - owner occupied | Special Mention [Member] |  |  |
Loans |  |  |
2020 | 3,151,000 |  |
2019 | 2,568,000 |  |
2018 | 4,128,000 |  |
2017 | 783,000 |  |
2015 and Prior | 2,569,000 |  |
Total loan balance | 13,199,000 |  |
CRE - owner occupied | Substandard [Member] |  |  |
Loans |  |  |
2020 | 2,561,000 |  |
2018 | 400,000 |  |
2017 | 2,954,000 |  |
2015 and Prior | 451,000 |  |
Total loan balance | 6,366,000 |  |
CRE - owner occupied | Substandard-Nonaccrual [Member] |  |  |
Loans |  |  |
2020 | 3,678,000 |  |
2015 and Prior | 28,000 |  |
Total loan balance | 3,706,000 |  |
CRE - non-owner occupied |  |  |
Loans |  |  |
2020 | 181,646,000 |  |
2019 | 128,361,000 |  |
2018 | 72,764,000 |  |
2017 | 99,816,000 |  |
2016 | 57,907,000 |  |
2015 and Prior | 150,683,000 |  |
Revolving | 1,926,000 |  |
Total loan balance | 693,103,000 | 11,672,000 | 767,821,000
CRE - non-owner occupied | Pass [Member] |  |  |
Loans |  |  |
2020 | 166,550,000 |  |
2019 | 128,361,000 |  |
2018 | 68,796,000 |  |
2017 | 99,816,000 |  |
2016 | 57,422,000 |  |
2015 and Prior | 150,683,000 |  |
Revolving | 1,926,000 |  |
Total loan balance | 673,554,000 |  |
CRE - non-owner occupied | Special Mention [Member] |  |  |
Loans |  |  |
2020 | 11,930,000 |  |
2018 | 2,557,000 |  |
Total loan balance | 14,487,000 |  |
CRE - non-owner occupied | Substandard [Member] |  |  |
Loans |  |  |
2020 | 3,166,000 |  |
2018 | 1,411,000 |  |
2016 | 485,000 |  |
Total loan balance | 5,062,000 |  |
Land and construction |  |  |
Loans |  |  |
2020 | 116,291,000 |  |
2019 | 22,054,000 |  |
2015 and Prior | 1,343,000 |  |
Revolving | 4,906,000 |  |
Total loan balance | 144,594,000 | 1,458,000 | 147,189,000
Land and construction | Pass [Member] |  |  |
Loans |  |  |
2020 | 114,932,000 |  |
2019 | 22,054,000 |  |
2015 and Prior | 1,343,000 |  |
Revolving | 4,906,000 |  |
Total loan balance | 143,235,000 |  |
Land and construction | Substandard [Member] |  |  |
Loans |  |  |
2020 | 1,359,000 |  |
Total loan balance | 1,359,000 |  |
Home equity |  |  |
Loans |  |  |
2020 | 383,000 |  |
2018 | 74,000 |  |
2015 and Prior | 143,000 |  |
Revolving | 111,285,000 |  |
Total loan balance | 111,885,000 | 1,321,000 | 151,775,000
Home equity | Pass [Member] |  |  |
Loans |  |  |
2020 | 266,000 |  |
2018 | 74,000 |  |
Revolving | 109,848,000 |  |
Total loan balance | 110,188,000 |  |
Home equity | Substandard [Member] |  |  |
Loans |  |  |
2015 and Prior | 143,000 |  |
Revolving | 605,000 |  |
Total loan balance | 748,000 |  |
Home equity | Substandard-Nonaccrual [Member] |  |  |
Loans |  |  |
2020 | 117,000 |  |
Revolving | 832,000 |  |
Total loan balance | 949,000 |  |
Multi-family |  |  |
Loans |  |  |
2020 | 32,370,000 |  |
2019 | 39,183,000 |  |
2018 | 17,248,000 |  |
2017 | 24,572,000 |  |
2016 | 16,235,000 |  |
2015 and Prior | 35,937,000 |  |
Revolving | 880,000 |  |
Total loan balance | 166,425,000 | 1,253,000 | 180,623,000
Multi-family | Pass [Member] |  |  |
Loans |  |  |
2020 | 31,481,000 |  |
2019 | 39,183,000 |  |
2018 | 17,248,000 |  |
2017 | 24,572,000 |  |
2016 | 16,235,000 |  |
2015 and Prior | 30,751,000 |  |
Revolving | 880,000 |  |
Total loan balance | 160,350,000 |  |
Multi-family | Special Mention [Member] |  |  |
Loans |  |  |
2015 and Prior | 5,186,000 |  |
Total loan balance | 5,186,000 |  |
Multi-family | Substandard [Member] |  |  |
Loans |  |  |
2020 | 889,000 |  |
Total loan balance | 889,000 |  |
Residential mortgages |  |  |
Loans |  |  |
2020 | 17,887,000 |  |
2019 | 10,048,000 |  |
2018 | 4,876,000 |  |
2017 | 7,324,000 |  |
2016 | 28,115,000 |  |
2015 and Prior | 16,866,000 |  |
Total loan balance | 85,116,000 | 678,000 | 100,759,000
Residential mortgages | Pass [Member] |  |  |
Loans |  |  |
2020 | 12,798,000 |  |
2019 | 10,048,000 |  |
2018 | 3,246,000 |  |
2017 | 7,324,000 |  |
2016 | 28,115,000 |  |
2015 and Prior | 15,568,000 |  |
Total loan balance | 77,099,000 |  |
Residential mortgages | Special Mention [Member] |  |  |
Loans |  |  |
2020 | 5,089,000 |  |
2018 | 1,630,000 |  |
Total loan balance | 6,719,000 |  |
Residential mortgages | Substandard [Member] |  |  |
Loans |  |  |
2015 and Prior | 1,298,000 |  |
Total loan balance | 1,298,000 |  |
Consumer and other |  |  |
Loans |  |  |
2020 | 10,000 |  |
2019 | 522,000 |  |
2018 | 1,893,000 |  |
2017 | 20,000 |  |
2016 | 116,000 |  |
2015 and Prior | 987,000 |  |
Revolving | 14,568,000 |  |
Total loan balance | 18,116,000 | $ 1,689,000 | $ 33,744,000
Consumer and other | Pass [Member] |  |  |
Loans |  |  |
2020 | 10,000 |  |
2019 | 522,000 |  |
2018 | 1,486,000 |  |
2017 | 20,000 |  |
2016 | 116,000 |  |
2015 and Prior | 987,000 |  |
Revolving | 14,568,000 |  |
Total loan balance | 17,709,000 |  |
Consumer and other | Substandard-Nonaccrual [Member] |  |  |
Loans |  |  |
2018 | 407,000 |  |
Total loan balance | 407,000 |  |
Risk Grades [Member] |  |  |
Loans |  |  |
2020 | 979,432,000 |  |
2019 | 309,922,000 |  |
2018 | 191,961,000 |  |
2017 | 202,725,000 |  |
2016 | 163,654,000 |  |
2015 and Prior | 326,918,000 |  |
Revolving | 451,375,000 |  |
Total loan balance | 2,625,987,000 |  |
Risk Grades [Member] | Pass [Member] |  |  |
Loans |  |  |
2020 | 925,630,000 |  |
2019 | 306,582,000 |  |
2018 | 180,072,000 |  |
2017 | 197,277,000 |  |
2016 | 159,945,000 |  |
2015 and Prior | 316,974,000 |  |
Revolving | 444,378,000 |  |
Total loan balance | 2,530,858,000 |  |
Risk Grades [Member] | Special Mention [Member] |  |  |
Loans |  |  |
2020 | 35,890,000 |  |
2019 | 3,284,000 |  |
2018 | 9,616,000 |  |
2017 | 1,736,000 |  |
2016 | 713,000 |  |
2015 and Prior | 7,925,000 |  |
Revolving | 1,937,000 |  |
Total loan balance | 61,101,000 |  |
Risk Grades [Member] | Substandard [Member] |  |  |
Loans |  |  |
2020 | 12,011,000 |  |
2018 | 1,830,000 |  |
2017 | 3,712,000 |  |
2016 | 2,881,000 |  |
2015 and Prior | 1,965,000 |  |
Revolving | 3,841,000 |  |
Total loan balance | 26,240,000 |  |
Risk Grades [Member] | Substandard-Nonaccrual [Member] |  |  |
Loans |  |  |
2020 | 5,901,000 |  |
2019 | 56,000 |  |
2018 | 443,000 |  |
2016 | 115,000 |  |
2015 and Prior | 54,000 |  |
Revolving | 1,219,000 |  |
Total loan balance | $ 7,788,000 |  |

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