Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Increase (Decrease} In Accumulated Other Comprehensive Income (Loss), Net Of Tax1 [Roll Forward]
Beginning Balance	$ (4,894)	$ 5,357
Other comprehensive income (loss) before reclassifications	3,516	(997)
Amounts reclassified from accumulated other comprehensive income (loss)	(259)	(651)
Total other comprehensive income (loss)	3,257	(1,648)
Ending Balance	(1,637)	3,709
Net Unrealized Gain (Loss) on Available for Sale Securities
Increase (Decrease} In Accumulated Other Comprehensive Income (Loss), Net Of Tax1 [Roll Forward]
Beginning Balance	(2,169)	10,164
Other comprehensive income (loss) before reclassifications	3,516	(997)
Amounts reclassified from accumulated other comprehensive income (loss)	(259)	(651)
Total other comprehensive income (loss)	3,257	(1,648)
Ending Balance	1,088	8,516
Defined Benefit Plan
Increase (Decrease} In Accumulated Other Comprehensive Income (Loss), Net Of Tax1 [Roll Forward]
Beginning Balance	(2,725)	(4,807)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Total other comprehensive income (loss)	0	0
Ending Balance	$ (2,725)	$ (4,807)