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Loans Receivable and Allowance for Loan Losses (Allowance for Loan Losses and Recorded Investment in Financing Receivables) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Allowance at beginning of period | $ 6,463 | $ 7,298
Charge Offs | (184) | (136)
Recoveries | 22 | 30
Provision for loan losses | 600 | 450
Allowance at end of period | 6,901 | 7,642
Ending balance individually evaluated for impairment |  | 1,644
Ending balance collectively evaluated for impairment | 6,901 | 5,998
Residential Real Estate Loans [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Allowance at beginning of period | 1,092 | 1,069
Charge Offs | (39) | 0
Recoveries | 1 | 1
Provision for loan losses | 125 | 7
Allowance at end of period | 1,179 | 1,077
Ending balance individually evaluated for impairment | 0 | 0
Ending balance collectively evaluated for impairment | 1,179 | 1,077
Commercial Real Estate Loans [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Allowance at beginning of period | 4,623 | 5,506
Charge Offs | (85) | (129)
Recoveries | 2 | 2
Provision for loan losses | 291 | 379
Allowance at end of period | 4,831 | 5,758
Ending balance individually evaluated for impairment | 0 | 1,644
Ending balance collectively evaluated for impairment | 4,831 | 4,114
Construction Real Estate Loans [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Allowance at beginning of period | 78 | 90
Charge Offs | (8) | 0
Recoveries | 12 | 0
Provision for loan losses | 13 | 19
Allowance at end of period | 95 | 109
Ending balance individually evaluated for impairment | 0 | 0
Ending balance collectively evaluated for impairment | 95 | 109
Commercial, financial and agricultural loans [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Allowance at beginning of period | 307 | 397
Charge Offs | 0 | 0
Recoveries | 0 | 0
Provision for loan losses | 62 | 49
Allowance at end of period | 369 | 446
Ending balance individually evaluated for impairment | 0 | 0
Ending balance collectively evaluated for impairment | 369 | 446
Consumer loans to individuals [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Allowance at beginning of period | 363 | 236
Charge Offs | (52) | (7)
Recoveries | 7 | 27
Provision for loan losses | 109 | (4)
Allowance at end of period | 427 | 252
Ending balance individually evaluated for impairment | 0 | 0
Ending balance collectively evaluated for impairment | $ 427 | $ 252

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- 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://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=66008989&loc=SL6953423-111524 + 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://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=66008989&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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 The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + 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 (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + 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 (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 Reference 2: 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=66008989&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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 4: http://www.xbrl.org/2003/role/presentationRef -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 Reference 5: http://www.xbrl.org/2003/role/presentationRef -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=6379141&loc=d3e15032-111544 + Details
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- Definition Amount of expense related to estimated loss from loan and lease transactions. + References Reference 1: 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 2: 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=66902209&loc=d3e3602-108585 Reference 3: 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=66008989&loc=SL6953423-111524 + Details
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