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Loans and Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 20,868 | $ 15,835 | $ 16,677 | $ 15,821 |
Provision (reversal) | 1,250 | 400 | 5,450 | 400 |
Charge-offs | (10) | 0 | (30) | (9) |
Recoveries | 5 | 5 | 16 | 28 |
Ending balance | 22,113 | 16,240 | 22,113 | 16,240 |
Ending ALLL related to loans collectively evaluated for impairment | 21,007 |  | 21,007 |  | $ 16,280
Ending ALLL related to loans individually evaluated for impairment | 1,106 |  | 1,106 |  | 397
Ending ALLL | 22,113 |  | 22,113 |  | 16,677
Collectively evaluated for impairment | 2,094,224 |  | 2,094,224 |  | 1,831,786
Individually evaluated for impairment | 13,767 |  | 13,767 |  | 11,500
Total loans | $ 2,107,991 |  | $ 2,107,991 |  | $ 1,843,286
Ratio of allowance for loan losses to total loans | 1.05% |  | 1.05% |  | 0.90%
Allowance for loan losses to non-accrual loans | 1533.00% |  | 1533.00% |  | 7379.00%
Commercial loans | Commercial and industrial |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 2,609 | 2,368 | $ 2,334 | 2,436 |
Provision (reversal) | (79) | 326 | 208 | 256 |
Charge-offs | (10) | 0 | (30) | (9) |
Recoveries | 5 | 5 | 13 | 16 |
Ending balance | 2,525 | 2,699 | 2,525 | 2,699 |
Ending ALLL related to loans collectively evaluated for impairment | 2,506 |  | 2,506 |  | $ 2,231
Ending ALLL related to loans individually evaluated for impairment | 19 |  | 19 |  | 103
Ending ALLL | 2,525 |  | 2,525 |  | 2,334
Collectively evaluated for impairment | 511,956 |  | 511,956 |  | 245,464
Individually evaluated for impairment | 1,017 |  | 1,017 |  | 1,223
Total loans | $ 512,973 |  | $ 512,973 |  | $ 246,687
Ratio of allowance for loan losses to total loans | 0.49% |  | 0.49% |  | 0.95%
Commercial real estate loans | Commercial real estate, owner-occupied |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 2,910 | 2,321 | $ 2,462 | 2,407 |
Provision (reversal) | 225 | 21 | 673 | (65) |
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
Ending balance | 3,135 | 2,342 | 3,135 | 2,342 |
Ending ALLL related to loans collectively evaluated for impairment | 2,910 |  | 2,910 |  | $ 2,267
Ending ALLL related to loans individually evaluated for impairment | 225 |  | 225 |  | 195
Ending ALLL | 3,135 |  | 3,135 |  | 2,462
Collectively evaluated for impairment | 292,751 |  | 292,751 |  | 301,826
Individually evaluated for impairment | 7,003 |  | 7,003 |  | 6,998
Total loans | $ 299,754 |  | $ 299,754 |  | $ 308,824
Ratio of allowance for loan losses to total loans | 1.05% |  | 1.05% |  | 0.80%
Commercial real estate loans | Commercial real estate, investor-owned |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 10,403 | 7,721 | $ 8,483 | 7,703 |
Provision (reversal) | 1,221 | 211 | 3,141 | 217 |
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 12 |
Ending balance | 11,624 | 7,932 | 11,624 | 7,932 |
Ending ALLL related to loans collectively evaluated for impairment | 10,927 |  | 10,927 |  | $ 8,442
Ending ALLL related to loans individually evaluated for impairment | 697 |  | 697 |  | 41
Ending ALLL | 11,624 |  | 11,624 |  | 8,483
Collectively evaluated for impairment | 962,322 |  | 962,322 |  | 944,547
Individually evaluated for impairment | 4,195 |  | 4,195 |  | 1,770
Total loans | $ 966,517 |  | $ 966,517 |  | $ 946,317
Ratio of allowance for loan losses to total loans | 1.20% |  | 1.20% |  | 0.90%
Allowance for loan losses to non-accrual loans | 1312.00% |  | 1312.00% |  |
Commercial real estate loans | Construction |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 836 | 619 | $ 638 | 756 |
Provision (reversal) | 24 | (117) | 219 | (254) |
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 3 | 0 |
Ending balance | 860 | 502 | 860 | 502 |
Ending ALLL related to loans collectively evaluated for impairment | 860 |  | 860 |  | $ 638
Ending ALLL related to loans individually evaluated for impairment | 0 |  | 0 |  | 0
Ending ALLL | 860 |  | 860 |  | 638
Collectively evaluated for impairment | 66,663 |  | 66,663 |  | 61,095
Individually evaluated for impairment | 0 |  | 0 |  | 0
Total loans | $ 66,663 |  | $ 66,663 |  | $ 61,095
Ratio of allowance for loan losses to total loans | 1.29% |  | 1.29% |  | 1.04%
Residential loans | Home equity |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 1,044 | 907 | $ 850 | 915 |
Provision (reversal) | (6) | (28) | 188 | (36) |
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
Ending balance | 1,038 | 879 | 1,038 | 879 |
Ending ALLL related to loans collectively evaluated for impairment | 1,034 |  | 1,034 |  | $ 845
Ending ALLL related to loans individually evaluated for impairment | 4 |  | 4 |  | 5
Ending ALLL | 1,038 |  | 1,038 |  | 850
Collectively evaluated for impairment | 106,581 |  | 106,581 |  | 115,606
Individually evaluated for impairment | 783 |  | 783 |  | 418
Total loans | $ 107,364 |  | $ 107,364 |  | $ 116,024
Ratio of allowance for loan losses to total loans | 0.97% |  | 0.97% |  | 0.73%
Allowance for loan losses to non-accrual loans | 195.00% |  | 195.00% |  | 506.00%
Residential loans | Other residential |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 1,266 | 849 | $ 973 | 800 |
Provision (reversal) | (6) | 56 | 287 | 105 |
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
Ending balance | 1,260 | 905 | 1,260 | 905 |
Ending ALLL related to loans collectively evaluated for impairment | 1,260 |  | 1,260 |  | $ 973
Ending ALLL related to loans individually evaluated for impairment | 0 |  | 0 |  | 0
Ending ALLL | 1,260 |  | 1,260 |  | 973
Collectively evaluated for impairment | 130,915 |  | 130,915 |  | 136,205
Individually evaluated for impairment | 0 |  | 0 |  | 452
Total loans | $ 130,915 |  | $ 130,915 |  | $ 136,657
Ratio of allowance for loan losses to total loans | 0.96% |  | 0.96% |  | 0.71%
Consumer loans | Installment and other consumer |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 426 | 323 | $ 284 | 310 |
Provision (reversal) | (20) | (28) | 122 | (15) |
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
Ending balance | 406 | 295 | 406 | 295 |
Ending ALLL related to loans collectively evaluated for impairment | 245 |  | 245 |  | $ 231
Ending ALLL related to loans individually evaluated for impairment | 161 |  | 161 |  | 53
Ending ALLL | 406 |  | 406 |  | 284
Collectively evaluated for impairment | 23,036 |  | 23,036 |  | 27,043
Individually evaluated for impairment | 769 |  | 769 |  | 639
Total loans | $ 23,805 |  | $ 23,805 |  | $ 27,682
Ratio of allowance for loan losses to total loans | 1.71% |  | 1.71% |  | 1.03%
Allowance for loan losses to non-accrual loans | 1692.00% |  | 1692.00% |  | 490.00%
Unallocated |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 1,374 | 727 | $ 653 | 494 |
Provision (reversal) | (109) | (41) | 612 | 192 |
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
Ending balance | 1,265 | $ 686 | 1,265 | $ 686 |
Ending ALLL related to loans collectively evaluated for impairment | 1,265 |  | 1,265 |  | $ 653
Ending ALLL related to loans individually evaluated for impairment | 0 |  | 0 |  | 0
Ending ALLL | 1,265 |  | 1,265 |  | 653
Collectively evaluated for impairment | 0 |  | 0 |  | 0
Individually evaluated for impairment | 0 |  | 0 |  | 0
Total loans | $ 0 |  | $ 0 |  | $ 0

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