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Allowance for Loan and Lease Losses - Allowance for Originated and Acquired Loan and Lease Losses by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 39,771 |  |  |  |  | $ 39,771 |  |
Provision for loan and lease losses | $ 2,058 | $ 272 | $ 1,045 | 567 | $ 2,014 | $ 402 | $ 976 | $ 769 | 3,942 | $ 4,161 | $ 4,321
Ending Balance | 43,410 |  |  |  | 39,771 |  |  |  | 43,410 | 39,771 |
Originated Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 39,686 |  |  |  | 35,598 | 39,686 | 35,598 |
Charge-offs |  |  |  |  |  |  |  |  | (2,127) | (1,856) |
Recoveries |  |  |  |  |  |  |  |  | 1,865 | 1,716 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | 3,897 | 4,228 |
Ending Balance | 43,321 |  |  |  | 39,686 |  |  |  | 43,321 | 39,686 | 35,598
Acquired Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 85 |  |  |  | 157 | 85 | 157 |
Charge-offs |  |  |  |  |  |  |  |  | (313) | (718) |
Recoveries |  |  |  |  |  |  |  |  | 272 | 713 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | 45 | (67) |
Ending Balance | 89 |  |  |  | 85 |  |  |  | 89 | 85 | 157
Commercial and industrial | Originated Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 11,812 |  |  |  | 9,389 | 11,812 | 9,389 |
Charge-offs |  |  |  |  |  |  |  |  | (293) | (291) |
Recoveries |  |  |  |  |  |  |  |  | 50 | 119 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | (352) | 2,595 |
Ending Balance | 11,217 |  |  |  | 11,812 |  |  |  | 11,217 | 11,812 | 9,389
Commercial and industrial | Acquired Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 25 |  |  |  | 0 | 25 | 0 |
Charge-offs |  |  |  |  |  |  |  |  | (41) | (74) |
Recoveries |  |  |  |  |  |  |  |  | 106 | 24 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | (35) | 75 |
Ending Balance | 55 |  |  |  | 25 |  |  |  | 55 | 25 | 0
Commercial real estate | Originated Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 20,412 |  |  |  | 19,836 | 20,412 | 19,836 |
Charge-offs |  |  |  |  |  |  |  |  | (60) | (21) |
Recoveries |  |  |  |  |  |  |  |  | 812 | 980 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | 2,319 | (383) |
Ending Balance | 23,483 |  |  |  | 20,412 |  |  |  | 23,483 | 20,412 | 19,836
Commercial real estate | Acquired Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 0 |  |  |  | 97 | 0 | 97 |
Charge-offs |  |  |  |  |  |  |  |  | (82) | (159) |
Recoveries |  |  |  |  |  |  |  |  | 31 | 637 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | 51 | (575) |
Ending Balance | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 97
Residential real estate | Originated Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 6,161 |  |  |  | 5,149 | 6,161 | 5,149 |
Charge-offs |  |  |  |  |  |  |  |  | (424) | (584) |
Recoveries |  |  |  |  |  |  |  |  | 324 | 212 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | 1,256 | 1,384 |
Ending Balance | 7,317 |  |  |  | 6,161 |  |  |  | 7,317 | 6,161 | 5,149
Residential real estate | Acquired Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 54 |  |  |  | 54 | 54 | 54 |
Charge-offs |  |  |  |  |  |  |  |  | (190) | (483) |
Recoveries |  |  |  |  |  |  |  |  | 135 | 44 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | 29 | 439 |
Ending Balance | 28 |  |  |  | 54 |  |  |  | 28 | 54 | 54
Consumer and other | Originated Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 1,301 |  |  |  | 1,224 | 1,301 | 1,224 |
Charge-offs |  |  |  |  |  |  |  |  | (1,350) | (960) |
Recoveries |  |  |  |  |  |  |  |  | 679 | 405 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | 674 | 632 |
Ending Balance | 1,304 |  |  |  | 1,301 |  |  |  | 1,304 | 1,301 | 1,224
Consumer and other | Acquired Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 6 |  |  |  | 6 | 6 | 6 |
Charge-offs |  |  |  |  |  |  |  |  | 0 | (2) |
Recoveries |  |  |  |  |  |  |  |  | 0 | 8 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | 0 | (6) |
Ending Balance | 6 |  |  |  | 6 |  |  |  | 6 | 6 | 6
Finance Leases | Originated Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 0 |  |  |  | 0 | 0 | 0 |
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 |
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | 0 | 0 |
Ending Balance | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Finance Leases | Acquired Loans and Leases |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 0 |  |  |  | $ 0 | 0 | 0 |
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 |
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 |
Provision for loan and lease losses |  |  |  |  |  |  |  |  | 0 | 0 |
Ending Balance | $ 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=84173941&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=84173941&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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