Shareholders' Equity And Stock-Based Compensation (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended		12 Months Ended			3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 2006 Equity Incentive Plan [Member]	Jun. 30, 2013 2006 Equity Incentive Plan [Member]	Jun. 30, 2014 2006 Equity Incentive Plan [Member]	Jun. 30, 2013 2006 Equity Incentive Plan [Member]	Dec. 31, 2012 2006 Equity Incentive Plan [Member]	Dec. 31, 2010 2006 Equity Incentive Plan [Member]	Jun. 30, 2014 2001 Stock Option Plan And Non-Employee Directors' Stock Option Plan [Member]	Jun. 30, 2014 Employee Stock Purchase Plan [Member]	Jun. 30, 2013 Employee Stock Purchase Plan [Member]	Jun. 30, 2014 Employee Stock Purchase Plan [Member]	Jun. 30, 2013 Employee Stock Purchase Plan [Member]	Jun. 30, 2014 Minimum [Member] 2006 Equity Incentive Plan [Member]	Jun. 30, 2014 Maximum [Member] 2006 Equity Incentive Plan [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Aggregate number of shares of common stock which awards could be granted	200,000		200,000		182,000					699,000		144,000
Increase in maximum number of shares approved										300,000	250,000				100,000
Vesting period of options under equity incentive plan																	3 years
Term of options																		10 years
Shares issued in lieu of cash for director fees under director program						0	0	0	0
Maximum amount of common stock participants may elect to purchase			$ 100
Window period			20 days
Weighted average fair value of options granted	$ 4.55	$ 2.60	$ 3.17	$ 2.52
Expected forfeiture rate of stock options			5.00%
Weighted average remaining contractual life of options exercisable, years			4 years 4 months 13 days
Stock option expense	102	134	244	265
Unrecognized compensation costs on non-vested awards	$ 908		$ 908
Unrecognized compensation costs, period of recognition, years			1 year 11 months 23 days
Maximum number of shares approved under purchase plan													100,000		100,000
Shares purchased for award	0	0	0	0									3,000	7,000	8,000	12,000