Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other comprehensive income:
Unrealized holding gains arising during the period, tax	$ 1,511	$ 2,826	$ 646
Reclassification adjustment for gains included in net income, tax	151	156	294
Unrealized losses on securities for which other-than-temporary impairment	0	9	375
Unrealized gain on interest rate swap, tax	50	213	106
Change in benefit obligation and plan assets for defined benefit plan, net of tax	$ 0	$ 80	$ 80