Changes and Reclassifications Out of Accumulated Other Comprehensive Income - Changes in AOCI by Component of Comprehensive (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at the beginning of the period	$ 1,240	$ 2,201	$ 2,007
Amounts recognized in other comprehensive income, net of taxes of $3,227, $430 and $386	(6,311)	(835)	749
Reclassified amounts out of accumulated other comprehensive income, net of tax of $60, $65 and $286	117	126	555
Balance at the end of the period	(5,188)	1,240	2,201
Other comprehensive income (loss), before reclassifications, tax	3,227	430	386
Reclassification from accumulated other comprehensive income, current period, tax	60	65	286
Unrealized securities gains and losses [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at the beginning of the period	3,295	4,019	3,479
Amounts recognized in other comprehensive income, net of taxes of $3,227, $430 and $386	(7,070)	(598)	1,095
Reclassified amounts out of accumulated other comprehensive income, net of tax of $60, $65 and $286	117	126	555
Balance at the end of the period	(3,892)	3,295	4,019
Pension and post- retirement costs [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at the beginning of the period	(2,055)	(1,818)	(1,472)
Amounts recognized in other comprehensive income, net of taxes of $3,227, $430 and $386	759	(237)	(346)
Reclassified amounts out of accumulated other comprehensive income, net of tax of $60, $65 and $286	0	0	0
Balance at the end of the period	$ (1,296)	$ (2,055)	$ (1,818)