Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Unrealized (loss) gain on available-for-sale securities [Abstract]
Unrealized (loss) gain on sale securities - net of income tax (benefit) of ($745) and $(156)	$ 1,118	$ (235)
Less: Reclassification adjustment for loss (gain) on sale of available-for-sale securities included in net income - net of income tax provision (benefit) of $78 and ($4)	117	(7)
Net unrealized (loss) gain on available-for-sale securities - net income tax provision (benefit) of ($597) and $(152)	1,001	(228)
Previously unrecognized past service costs of employee benefit plans - net of tax (benefit) $136 and ($56)	(203)	(75)
Total other comprehensive income (loss)	798	(303)
Tax effect of unrealized (loss) gain on sale securities	(745)	156
Tax effect of reclassification adjustment for loss (gain) on sale of available-for-sale securities included in net income	78	(4)
Tax effect of net unrealized (loss) gain on available-for-sale securities	(667)	(152)
Tax effect of previously unrecognized past service costs of employee benefit plans	$ 136	$ (56)