Unaudited Consolidated Statements of Comprehensive Income (Parentheticals) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net unrealized holding gain (loss) on available for sale securities arising during the period, net of tax	$ 188	$ 98
Reclassification adjustment for prior period unrealized gain recognized during current period, net of tax	5	226
Change in unfunded portion of postretirement benefit obligation, net of tax	$ 36	$ 32