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Loans Receivable and Allowance for Loan Losses (Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | $ 2,855 | $ 8,632 |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 6,373 | 2,973 |
Impaired Financing Receivable, Recorded Investment | 9,228 | 11,605 |
Unpaid Principal Balance, With no related allowance recorded | 4,826 | 8,799 |
Unpaid Principal Balance, With an allowance recorded | 6,446 | 3,837 |
Unpaid Principal Balance, Total | 11,272 | 12,636 |
Associated Allowance | 1,613 | 293 |
Average Recorded Investment, Total | 9,015 | 7,725 | $ 10,580
Interest Income Recognized, Total | 532 | 508 | 241
Residential Real Estate Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 168 | 225 |
Impaired Financing Receivable, Recorded Investment | 168 | 225 |
Unpaid Principal Balance, With no related allowance recorded | 173 | 233 |
Unpaid Principal Balance, Total | 173 | 233 |
Associated Allowance | 0 | 0 |
Average Recorded Investment, Total | 159 | 233 | 252
Interest Income Recognized, Total | 4 | 5 | 5
Commercial Real Estate Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,644 | 8,407 |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 6,373 | 2,973 |
Impaired Financing Receivable, Recorded Investment | 9,017 | 11,380 |
Unpaid Principal Balance, With no related allowance recorded | 4,610 | 8,566 |
Unpaid Principal Balance, With an allowance recorded | 6,446 | 3,837 |
Unpaid Principal Balance, Total | 11,056 | 12,403 |
Associated Allowance | 1,613 | 293 |
Average Recorded Investment, Total | 8,847 | 7,492 | 10,328
Interest Income Recognized, Total | 526 | 503 | 236
Commercial, financial and agricultural loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 43 |  |
Impaired Financing Receivable, Recorded Investment | 43 |  |
Unpaid Principal Balance, With no related allowance recorded | 43 |  |
Unpaid Principal Balance, Total | 43 |  |
Associated Allowance | 0 |  |
Average Recorded Investment, Total | 9 | 0 | 0
Interest Income Recognized, Total | $ 2 | $ 0 | $ 0

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524 + Details
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