Accumulated Other Comprehensive Income (Loss) (Changes in AOCI by component) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]      
Accumulated Other Comprehensive Income (Loss), Net of Tax $ 5,007 $ 2,489 $ (1,709)
OCI before reclassifications (16,851) 3,341 7,111
Amounts reclassified from AOCI 37 (586) 135
Subtotal (16,814) 2,755 7,246
Tax effect 5,466 (237) (3,048)
Other comprehensive income (loss), net of tax (11,348) 2,518 4,198
Accumulated Other Comprehensive Income (Loss), Net of Tax (6,341) 5,007 2,489
Unrealized Holding Gains (Losses) on AFS Securities [Member]
     
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]      
Accumulated Other Comprehensive Income (Loss), Net of Tax 8,678 5,942 444
OCI before reclassifications (18,971) 3,921 9,220
Amounts reclassified from AOCI (171) (837) (3)
Subtotal (19,142) 3,084 9,217
Tax effect 6,257 (348) (3,719)
Other comprehensive income (loss), net of tax (12,885) 2,736 5,498
Accumulated Other Comprehensive Income (Loss), Net of Tax (4,207) 8,678 5,942
Defined Benefit Pension Plan [Member]
     
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]      
Accumulated Other Comprehensive Income (Loss), Net of Tax (3,671) (3,453) (2,153)
OCI before reclassifications 2,120 (580) (2,109)
Amounts reclassified from AOCI 208 251 138
Subtotal 2,328 (329) (1,971)
Tax effect (791) 111 671
Other comprehensive income (loss), net of tax 1,537 (218) (1,300)
Accumulated Other Comprehensive Income (Loss), Net of Tax $ (2,134) $ (3,671) $ (3,453)