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Supplemental Comprehensive Income Disclosures (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Supplemental Comprehensive Income Disclosures [Abstract] |  |
Unrealized holding (losses) gains on securities arising during the period | $ 12,457 | $ (2,411)
Reclassification adjustment for gains on securities included in net income | 0 | (4)
Total unrealized (losses) gains on securities | 12,457 | (2,415)
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax | (4,361) | 844
Total other comprehensive (loss) income | 12,457 | (2,415)
Unrealized holding (losses) gains on securities arising during the period | (4,361) | 843
Reclassification adjustment for gains on securities included in net income | 0 | 1
Total other comprehensive (loss) income | (4,361) | 844
Other comprehensive income (loss) before reclassification adjustment | 8,096 | (1,568)
Reclassification adjustment for gains on securities included in net income | 0 | (3)
Total unrealized (losses) gains on securities | 8,096 | (1,571)
Total other comprehensive (loss) income | $ 8,096 | $ (1,571)

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