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Summary of Significant Accounting Policies (Schedule of Changes in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Unrealized Gain (Loss) on Securities Available for Sale |  |  |
Beginning balance | $ (421) | $ (1,232) |
Other comprehensive income (loss) before reclassifications | (289) | 1,290 |
Amounts reclassified from accumulated other comprehensive income | 1 | (479) |
Net current-period other comprehensive income (loss) | (288) | 811 |
Ending balance | (709) | (421) | $ (1,232)
Additional Pension Asset (Liability) |  |  |
Beginning balance | (157) | 3,132 |
Other comprehensive income (loss) before reclassifications | (2,636) | (3,154) |
Amounts reclassified from accumulated other comprehensive income | (48) | (135) |
Net current-period other comprehensive income (loss) | (2,684) | (3,289) |
Ending balance | (2,841) | (157) | 3,132
Total |  |  |
Beginning balance | (578) | 1,900 |
Other comprehensive income (loss) before reclassifications | (2,925) | (1,864) |
Amounts reclassified from accumulated other comprehensive income | (47) | (614) |
Net current-period other comprehensive income (loss) | (2,972) | (2,478) | 2,076
Ending balance | $ (3,550) | $ (578) | $ 1,900

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