Common Stock And Stock Options (Narrative) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended							12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 2006 Equity Incentive Plan [Member]	Dec. 31, 2010 2006 Equity Incentive Plan [Member]	Dec. 31, 2013 2006 Equity Incentive Plan [Member]	Dec. 31, 2013 2001 Stock Option Plan And Non-Employee Directors' Stock Option Plan [Member]	Dec. 31, 2013 Employee Stock Purchase Plan [Member]	Dec. 31, 2012 Employee Stock Purchase Plan [Member]	Dec. 31, 2011 Employee Stock Purchase Plan [Member]	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Minimum [Member] 2006 Equity Incentive Plan [Member]	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 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	182					699	160
Increase in maximum number of shares approved				300	250				100
Vesting period of options under equity incentive plan											1 year	3 years	3 years	10 years
Shares issued in lieu of cash for director fees under director program	0	1	3
Maximum amount of common stock participants may elect to purchase	$ 100
Window period	20 days
Shares repurchased under management purchase program	0	0	0
Weighted average remaining contractual life of options exercisable, years	4 years 7 days
Weighted average remaining contractual life of options outstanding, years	5 years 2 months 1 day
Total intrinsic value of options exercised	12	84	163
Weighted average fair value of options granted	$ 4.06	$ 3.84	$ 2.57
Stock option expense	532	414	214
Unrecognized compensation costs on non-vested awards	$ 619
Unrecognized compensation costs, period of recognition, years	1 year 5 months 19 days
Maximum number of shares approved under purchase plan								100
Shares purchased for award								26	20	17