Shareholders' Equity And Stock-Based Compensation (Summary Of Stock Option Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Shareholders' Equity And Stock-Based Compensation [Abstract]
Number of Shares, Outstanding at December 31, 2011	1,085
Number of Shares, Options forfeited or cancelled	(3)
Number of Shares, Options granted	182
Number of Shares, Options exercised	(20)
Number of Shares, Outstanding at September 30, 2012	1,244
Number of Shares, Exercisable at September 30, 2012	925
Number of Shares, Available for future grant at December 31, 2011	239
Number of Shares, Available for future grant at September 30, 2012	359
Weighted-average Exercise Price, Outstanding at December 31, 2011	$ 5.84
Weighted-average Exercise Price, Options forfeited or cancelled	$ 6.76
Weighted-average Exercise Price, Options granted	$ 6.42
Weighted-average Exercise Price, Options exercised	$ 2.54
Weighted-average Exercise Price, Outstanding at September 30, 2012	$ 5.97
Weighted-average Exercise Price, Exercisable at September 30, 2012	$ 6.13
Aggregate Intrinsic Value, Outstanding at June 30, 2012	$ 985
Aggregate Intrinsic Value, Exercisable at September 30, 2012	$ 878