Significant Accounting Policies (Schedule Of Weighted Average Shares Outstanding) (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Significant Accounting Policies [Abstract]
Weighted average common shares, basic	24,395	24,381	24,052
Dilutive effect of stock options	40	38	161
Weighted average common shares, diluted	24,435	24,419	24,213