Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at the beginning of the period	$ (495)	$ (5,188)
Changes in unrealized securities' holding gain (loss), net of taxes	762	1,871
Reclassified amounts out of accumulated other comprehensive income, net of tax of $65	(127)	0
Balance at the end of the period	140	(3,317)
Realized gains on sale of securities	391	964
Realized gains on sale of securities	(192)	0
Tax expense (34%)	65	0
Reclassified amounts out of accumulated other comprehensive income, net of tax of $65	(127)	0
Federal tax rate (percent)	34.00%
Unrealized securities gains and losses
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at the beginning of the period	1,013	(3,892)
Changes in unrealized securities' holding gain (loss), net of taxes	762	1,871
Reclassified amounts out of accumulated other comprehensive income, net of tax of $65	(127)	0
Balance at the end of the period	1,648	(2,021)
Reclassified amounts out of accumulated other comprehensive income, net of tax of $65	(127)	0
Pension and post- retirement costs
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at the beginning of the period	(1,508)	(1,296)
Changes in unrealized securities' holding gain (loss), net of taxes	0	0
Reclassified amounts out of accumulated other comprehensive income, net of tax of $65	0	0
Balance at the end of the period	(1,508)	(1,296)
Reclassified amounts out of accumulated other comprehensive income, net of tax of $65	$ 0	$ 0