Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ (323)	$ (3,969)
Other comprehensive income before reclassifications	(15,416)
Amounts reclassified from accumulated other comprehensive income	(1,866)
Other comprehensive income/(loss), net of tax	(17,282)	3,646	(278)
Ending balance	(17,605)	(323)	(3,969)
Unrealized gains (losses) on available for sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	3,650
Other comprehensive income before reclassifications	(16,447)
Amounts reclassified from accumulated other comprehensive income	(1,679)
Other comprehensive income/(loss), net of tax	(18,126)
Ending balance	(14,476)
Defined benefit plan items [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(3,973)
Other comprehensive income before reclassifications	1,031
Amounts reclassified from accumulated other comprehensive income	(187)
Other comprehensive income/(loss), net of tax	844
Ending balance	$ (3,129)