Consolidated Condensed Statements of Comprehensive Income (Unaudited) (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
Statement Of Income and Comprehensive Income [Abstract]
Unrealized holding gains arising during the period, tax expense (in dollars)	$ 275	$ 424	$ 503	$ 990
Reclassification adjustment for gains included in net income, tax expense (in dollars)	$ 45	$ 38	$ 162	$ 94