Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Statement of Other Comprehensive Income [Abstract]
Net income	$ 2,598	$ 1,607
Unrealized gains (losses) on securities:
Unrealized gains (losses) on securities available for sale arising during the period, net of tax of $339 and $156 for the three months ended March 31	(572)	269
Unrealized gains on other-than-temporarily impaired securities available for sale arising during the period, net of tax of $3 and $20 for the three months ended March 31	7	33
Reclassification adjustment for gains on securities available for sale included in net income, net of tax of $6 and $220 for the three months ended March 31	(10)	(371)
Unrealized losses net of settlements on cash flow hedge arising during the period, net of tax of $33 and $40 for the three months ended March 31	55	66
Defined benefit pension plans:
Amortization of actuarial loss, net of tax of $220 and $199 for the three months ended March 31	371	335
Other comprehensive income (loss)	(149)	332
Total comprehensive income	$ 2,449	$ 1,939