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Loans and allowance for credit losses (Details 7) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Allowance for credit losses: |  |  |  |
Beginning balance | $ 10,069 | $ 15,735 | $ 10,725 | $ 15,991
Charge-offs | (2,177) | (2,919) | (3,925) | (5,630)
Recoveries | 234 | 207 | 351 | 512
Net charge-offs | (1,943) | (2,712) | (3,574) | (5,118)
Provision | 950 | 2,700 | 1,925 | 4,850
Ending balance | 9,076 | 15,723 | 9,076 | 15,723
Construction Loans [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance | 1,997 | 4,116 | 1,960 | 4,387
Charge-offs | (224) | (802) | (241) | (1,509)
Recoveries | 1 | 1 | 11 | 2
Net charge-offs | (223) | (801) | (230) | (1,507)
Provision | 474 | 1,031 | 518 | 1,466
Ending balance | 2,248 | 4,346 | 2,248 | 4,346
Residential Real Estate [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance | 2,086 | 4,864 | 3,854 | 5,194
Charge-offs | (315) | (1,096) | (987) | (1,889)
Recoveries | 63 | 59 | 106 | 298
Net charge-offs | (252) | (1,037) | (881) | (1,591)
Provision | 520 | 432 | (619) | 656
Ending balance | 2,354 | 4,259 | 2,354 | 4,259
Commercial Real Estate [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance | 4,584 | 4,374 | 3,029 | 4,134
Charge-offs | (1,523) | (872) | (1,613) | (1,947)
Recoveries | 7 | 90 | 13 | 93
Net charge-offs | (1,516) | (782) | (1,600) | (1,854)
Provision | (416) | 1,922 | 1,223 | 3,234
Ending balance | 2,652 | 5,514 | 2,652 | 5,514
Commercial Loan [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance | 677 | 1,760 | 1,266 | 1,682
Charge-offs | (95) | (136) | (937) | (223)
Recoveries | 157 | 50 | 207 | 102
Net charge-offs | 62 | (86) | (730) | (121)
Provision | 119 | (458) | 322 | (345)
Ending balance | 858 | 1,216 | 858 | 1,216
Consumer Loan [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance | 308 | 330 | 243 | 407
Charge-offs | (20) | (13) | (147) | (62)
Recoveries | 6 | 7 | 14 | 17
Net charge-offs | (14) | (6) | (133) | (45)
Provision | 12 | (23) | 196 | (61)
Ending balance | 306 | 301 | 306 | 301
Unallocated Financing Receivables [Member] |  |  |  |
Allowance for credit losses: |  |  |  |
Beginning balance | 417 | 291 | 373 | 187
Charge-offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Net charge-offs | 0 | 0 | 0 | 0
Provision | 241 | (204) | 285 | (100)
Ending balance | $ 658 | $ 87 | $ 658 | $ 87

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
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- Definition The increase (decrease) in the allowance for credit losses related to financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
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- Definition Amount of direct write-downs of financing receivables charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
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- Details
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- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
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