Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at the beginning of the period	$ (5,188)	$ 1,240
Amounts recognized in other comprehensive income, net of taxes	1,871	(714)
Reclassified amounts out of accumulated other comprehensive income, net of tax	0	0
Balance at the end of the period	(3,317)	409
Other Comprehensive Income (Loss), before Reclassifications, Tax	964	368
Unrealized securities gains and losses
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at the beginning of the period	(3,892)	3,295
Amounts recognized in other comprehensive income, net of taxes	1,871	(714)
Reclassified amounts out of accumulated other comprehensive income, net of tax	0	117
Balance at the end of the period	(2,021)	2,464
Pension and post- retirement costs
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at the beginning of the period	(1,296)	(2,055)
Amounts recognized in other comprehensive income, net of taxes	0	0
Reclassified amounts out of accumulated other comprehensive income, net of tax	0	0
Balance at the end of the period	$ (1,296)	$ (2,055)