Accumulated Other Comprehensive Income (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Total reclassifications for the period	$ 2,071	$ 2,365
Net of tax [Member]
Total reclassifications for the period	56
Gain on sale of securities [Member]
Unrealized gains and losses on available-for-sale securities	85
Tax expense [Member]
Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Tax	$ (29)