Common Stock And Stock Options (Tables)

12 Months Ended

Dec. 31, 2016

Common Stock And Stock Options [Abstract]

Schedule Of Stock Option Activity

			Weighted-average		Aggregate
	Number of Shares		Exercise Price		Intrinsic Value
Outstanding at December 31, 2013	1,407	$	5.75
Options forfeited or cancelled	(63)		7.87
Options granted	174		4.99
Options exercised	(205)		3.74
Outstanding at December 31, 2014	1,313		5.86
Options granted	170		7.14
Options exercised	(159)		3.12
Outstanding at December 31, 2015	1,324		6.36
Options forfeited or cancelled	(70)		5.75
Options granted	192		7.11
Options exercised	(61)		5.22
Outstanding at December 31, 2016	1,385	$	6.54	$	1,774
Exercisable at December 31, 2015	989	$	6.50	$	2,076
Exercisable at December 31, 2016	1,025	$	6.45	$	1,615
Available for future grant at December 31, 2016	404

Schedule Of Weighted Average Assumptions

	2016		2015		2014
Dividend yield	0.0	%	0.0	%	0.0	%
Expected volatility	61.66 - 66.45	%	65.15 - 72.81	%	75.03 - 75.59	%
Risk-free interest rate	1.36-2.00	%	1.42-1.88	%	2.00-2.07	%
Expected life (years)	6.0		6.0		6.0