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Loans, net and allowance for loan losses - Changes in Allowance for Loan Losses Account by Major Classification of Loans (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2017 | Dec. 31, 2016
Allowance for loan losses: |  |  |  |
Beginning Balance | $ 15,961 | $ 12,975 |  |
Charge-offs | (311) | (123) |  |
Recoveries | 119 | 106 |  |
Provisions | 1,200 | 1,200 |  |
Ending balance | 16,969 | 14,158 |  |
Beginning Balance | 15,961 | 12,975 |  |
Ending balance: individually evaluated for impairment |  |  | $ 1,424 | $ 1,942
Charge-offs | (311) | (123) |  |
Ending balance: collectively evaluated for impairment |  |  | 15,545 | 14,019
Recoveries | 119 | 106 |  |
Ending balance: loans acquired with deteriorated credit quality | 15,961 | 12,975 | 16,969 | 15,961
Provisions | 1,200 | 1,200 |  |
Loans receivable: |  |  |  |
Total Loans |  |  | 1,559,867 | 1,532,965
Ending balance: individually evaluated for impairment |  |  | 9,726 | 11,242
Ending balance: collectively evaluated for impairment |  |  | 1,548,393 | 1,519,386
Total Loans |  |  | 1,559,867 | 1,532,965
Ending balance | 16,969 | 14,158 |  |
Ending balance: individually evaluated for impairment |  |  | 9,726 | 11,242
Ending balance: collectively evaluated for impairment |  |  | 1,548,393 | 1,519,386
Loans Acquired with Deteriorated Credit Quality |  |  |  |
Loans receivable: |  |  |  |
Ending balance |  |  | 1,748 | 2,337
Ending balance |  |  | 1,748 | 2,337
Commercial |  |  |  |
Allowance for loan losses: |  |  |  |
Beginning Balance | 3,799 | 3,042 |  |
Charge-offs |  | (3) |  |
Recoveries | 7 | 2 |  |
Provisions | 323 | 281 |  |
Ending balance | 4,129 | 3,322 |  |
Beginning Balance | 3,799 | 3,042 |  |
Ending balance: individually evaluated for impairment |  |  | 404 | 225
Charge-offs |  | (3) |  |
Ending balance: collectively evaluated for impairment |  |  | 3,725 | 3,574
Recoveries | 7 | 2 |  |
Ending balance: loans acquired with deteriorated credit quality | 3,799 | 3,042 | 4,129 | 3,799
Provisions | 323 | 281 |  |
Loans receivable: |  |  |  |
Total Loans |  |  | 431,164 | 408,814
Ending balance: individually evaluated for impairment |  |  | 2,311 | 1,724
Ending balance: collectively evaluated for impairment |  |  | 428,476 | 406,127
Total Loans |  |  | 431,164 | 408,814
Ending balance | 4,129 | 3,322 |  |
Ending balance: individually evaluated for impairment |  |  | 2,311 | 1,724
Ending balance: collectively evaluated for impairment |  |  | 428,476 | 406,127
Commercial | Loans Acquired with Deteriorated Credit Quality |  |  |  |
Loans receivable: |  |  |  |
Ending balance |  |  | 377 | 963
Ending balance |  |  | 377 | 963
Real estate Commercial |  |  |  |
Allowance for loan losses: |  |  |  |
Beginning Balance | 5,847 | 4,245 |  |
Charge-offs | (125) | (55) |  |
Recoveries | 33 | 16 |  |
Provisions | 536 | 410 |  |
Ending balance | 6,291 | 4,616 |  |
Beginning Balance | 5,847 | 4,245 |  |
Ending balance: individually evaluated for impairment |  |  | 513 | 1,197
Charge-offs | (125) | (55) |  |
Ending balance: collectively evaluated for impairment |  |  | 5,778 | 4,650
Recoveries | 33 | 16 |  |
Ending balance: loans acquired with deteriorated credit quality | 5,847 | 4,245 | 6,291 | 5,847
Provisions | 536 | 410 |  |
Loans receivable: |  |  |  |
Total Loans |  |  | 703,194 | 700,144
Ending balance: individually evaluated for impairment |  |  | 3,849 | 5,820
Ending balance: collectively evaluated for impairment |  |  | 698,008 | 692,987
Total Loans |  |  | 703,194 | 700,144
Ending balance | 6,291 | 4,616 |  |
Ending balance: individually evaluated for impairment |  |  | 3,849 | 5,820
Ending balance: collectively evaluated for impairment |  |  | 698,008 | 692,987
Real estate Commercial | Loans Acquired with Deteriorated Credit Quality |  |  |  |
Loans receivable: |  |  |  |
Ending balance |  |  | 1,337 | 1,337
Ending balance |  |  | 1,337 | 1,337
Real estate Residential |  |  |  |
Allowance for loan losses: |  |  |  |
Beginning Balance | 4,707 | 4,082 |  |
Charge-offs | (15) |  |  |
Recoveries | 22 | 25 |  |
Provisions | 264 | 252 |  |
Ending balance | 4,978 | 4,359 |  |
Beginning Balance | 4,707 | 4,082 |  |
Ending balance: individually evaluated for impairment |  |  | 484 | 520
Charge-offs | (15) |  |  |
Ending balance: collectively evaluated for impairment |  |  | 4,494 | 4,187
Recoveries | 22 | 25 |  |
Ending balance: loans acquired with deteriorated credit quality | 4,707 | 4,082 | 4,978 | 4,707
Provisions | 264 | 252 |  |
Loans receivable: |  |  |  |
Total Loans |  |  | 286,389 | 289,781
Ending balance: individually evaluated for impairment |  |  | 3,359 | 3,543
Ending balance: collectively evaluated for impairment |  |  | 282,996 | 286,201
Total Loans |  |  | 286,389 | 289,781
Ending balance | 4,978 | 4,359 |  |
Ending balance: individually evaluated for impairment |  |  | 3,359 | 3,543
Ending balance: collectively evaluated for impairment |  |  | 282,996 | 286,201
Real estate Residential | Loans Acquired with Deteriorated Credit Quality |  |  |  |
Loans receivable: |  |  |  |
Ending balance |  |  | 34 | 37
Ending balance |  |  | 34 | 37
Consumer |  |  |  |
Allowance for loan losses: |  |  |  |
Beginning Balance | 1,608 | 1,583 |  |
Charge-offs | (171) | (65) |  |
Recoveries | 57 | 63 |  |
Provisions | 77 | 65 |  |
Ending balance | 1,571 | 1,646 |  |
Beginning Balance | 1,608 | 1,583 |  |
Ending balance: individually evaluated for impairment |  |  | 23 |
Charge-offs | (171) | (65) |  |
Ending balance: collectively evaluated for impairment |  |  | 1,548 | 1,608
Recoveries | 57 | 63 |  |
Ending balance: loans acquired with deteriorated credit quality | 1,608 | 1,583 | 1,571 | 1,608
Provisions | 77 | 65 |  |
Loans receivable: |  |  |  |
Total Loans |  |  | 139,120 | 134,226
Ending balance: individually evaluated for impairment |  |  | 207 | 155
Ending balance: collectively evaluated for impairment |  |  | 138,913 | 134,071
Total Loans |  |  | 139,120 | 134,226
Ending balance | $ 1,571 | 1,646 |  |
Ending balance: individually evaluated for impairment |  |  | 207 | 155
Ending balance: collectively evaluated for impairment |  |  | $ 138,913 | $ 134,071
Unallocated |  |  |  |
Allowance for loan losses: |  |  |  |
Beginning Balance |  | 23 |  |
Provisions |  | 192 |  |
Ending balance |  | 215 |  |
Beginning Balance |  | 23 |  |
Ending balance: loans acquired with deteriorated credit quality |  | 23 |  |
Provisions |  | 192 |  |
Loans receivable: |  |  |  |
Ending balance |  | $ 215 |  |

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5074-111524 + Details
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- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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