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Loans and the Allowance for Loan Losses (Analysis of Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012
Financing Receivable, Impaired [Line Items] |  |  |  |  |
No Related Allowance: Recorded Invesment | $ 1,275 |  | $ 1,275 |  | $ 1,500
No Related Allowance: Unpaid Principal Balance | 1,576 |  | 1,576 |  | 1,950
With An Allowance Recorded: Recorded Investment | 1,410 |  | 1,410 |  | 5,435
With An Allowance Recorded: Unpaid Principal Balance | 1,609 |  | 1,609 |  | 5,435
With An Allowance Recorded: Related Allowance | 140 |  | 140 |  | 645
Total Impaired: Recorded Investment | 2,685 |  | 2,685 |  | 6,935
Total Impaired: Unpaid Principal Balance | 3,185 |  | 3,185 |  | 7,385
Total Impaired: Related Allowance | 140 |  | 140 |  | 645
No Related Allowance: Average Recorded Investment | 1,450 | 2,250 | 1,450 | 2,250 |
No Related Allowance: Interest Income Recognized | 19 | 28 | 38 | 58 |
With An Allowance Recorded: Average Recorded Investment | 5,152 | 11,069 | 5,331 | 11,490 |
With An Allowance Recorded: Interest Income Recognized | 45 | 83 | 89 | 144 |
Total Impaired: Average Recorded Investment | 6,602 | 13,319 | 6,781 | 13,740 |
Total Impaired: Interest Income Recognized | 64 | 111 | 127 | 202 |
Commercial real estate [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
No Related Allowance: Recorded Invesment | 1,275 |  | 1,275 |  | 1,500
No Related Allowance: Unpaid Principal Balance | 1,576 |  | 1,576 |  | 1,950
With An Allowance Recorded: Recorded Investment | 175 |  | 175 |  | 4,180
With An Allowance Recorded: Unpaid Principal Balance | 374 |  | 374 |  | 4,180
With An Allowance Recorded: Related Allowance | 63 |  | 63 |  | 493
Total Impaired: Recorded Investment | 1,450 |  | 1,450 |  | 5,680
Total Impaired: Unpaid Principal Balance | 1,950 |  | 1,950 |  | 6,130
Total Impaired: Related Allowance | 63 |  | 63 |  | 493
No Related Allowance: Average Recorded Investment | 1,450 | 2,250 | 1,450 | 2,250 |
No Related Allowance: Interest Income Recognized | 19 | 28 | 38 | 58 |
With An Allowance Recorded: Average Recorded Investment | 3,908 | 4,180 | 4,087 | 4,180 |
With An Allowance Recorded: Interest Income Recognized | 34 | 34 | 68 | 69 |
Total Impaired: Average Recorded Investment | 5,358 | 6,430 | 5,537 | 6,430 |
Total Impaired: Interest Income Recognized | 53 | 62 | 106 | 127 |
Construction [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
With An Allowance Recorded: Average Recorded Investment | 0 | 2,873 | 0 | 3,093 |
With An Allowance Recorded: Interest Income Recognized | 0 | 16 | 0 | 16 |
Total Impaired: Average Recorded Investment | 0 | 2,873 | 0 | 3,093 |
Total Impaired: Interest Income Recognized | 0 | 16 | 0 | 16 |
Residential mortgage [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
With An Allowance Recorded: Recorded Investment | 1,235 |  | 1,235 |  | 1,255
With An Allowance Recorded: Unpaid Principal Balance | 1,235 |  | 1,235 |  | 1,255
With An Allowance Recorded: Related Allowance | 77 |  | 77 |  | 152
Total Impaired: Recorded Investment | 1,235 |  | 1,235 |  | 1,255
Total Impaired: Unpaid Principal Balance | 1,235 |  | 1,235 |  | 1,255
Total Impaired: Related Allowance | 77 |  | 77 |  | 152
With An Allowance Recorded: Average Recorded Investment | 1,244 | 4,016 | 1,244 | 4,217 |
With An Allowance Recorded: Interest Income Recognized | 11 | 33 | 21 | 59 |
Total Impaired: Average Recorded Investment | 1,244 | 4,016 | 1,244 | 4,217 |
Total Impaired: Interest Income Recognized | $ 11 | $ 33 | $ 21 | $ 59 |

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