Unaudited Consolidated Statements of Comprehensive Income (Parentheticals) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Tax on net unrealized holding gain (loss) on available for sale securities arising during the period	$ 1,270	$ 1,767	$ 1,861	$ 3,289
Tax on reclassification adjustment for prior period unrealized gain recognized during current period	97	25	275	181
Tax on change in unfunded portion of postretirement benefit obligation	$ 44	$ 32	$ 111	$ 95