Annual report pursuant to Section 13 and 15(d)

Organization and Summary of Significant Accounting Policies (Tables)

Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Organization and Summary of Significant Accounting Policies [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table sets forth the reconciliation of the numerator and denominator used in the computation of basic and diluted net income (loss) per common share for the years ended December 31, 2014, 2013 and 2012:

	Years ended December 31,
(in thousands, except per share amounts)	2014		2013		2012
Numerator:
Net income (loss) used for basic earnings per share	$	(2,403)	$	9,711	$	(15,180)
Less change in fair value of warrant liability		1,083		1,737		—
Net (loss) income used for diluted earnings per share	$	(3,486)	$	7,974	$	(15,180)
Denominator:
Basic weighted-average outstanding common shares		93,814		82,099		66,509
Effect of dilutive potential common shares resulting from options		18		493		—
Effect of dilutive potential common shares resulting from warrants		—		67		—
Weighted-average shares outstanding—diluted		93,832		82,659		66,509
Net income (loss) per common share:
Basic	$	(0.03)	$	0.12	$	(0.23)
Diluted	$	(0.04)	$	0.10	$	(0.23)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The table below presents common shares underlying stock options and warrants that are excluded from the calculation of the weighted average number of shares of common stock outstanding used for the calculation of diluted net income (loss) per common share. These are excluded from the calculation due to their anti-dilutive effect for the years ended December 31, 2014, 2013 and 2012:

	Years ended December 31,
(in thousands)	2014		2013		2012
Weighted-average anti-dilutive common shares resulting from options and awards		6,894		2,628		4,213
Weighted-average anti-dilutive common shares resulting from warrants		2,333		675		3,011
		9,227		3,303		7,224

Fair Value of Warrant Liability [Table Text Block]

The following table rolls forward the fair value of the Company’s warrant liability, the fair value of which is determined by Level 3 inputs for the years ended December 31, 2014 and 2013 (in thousands):

	December 31,
	2014		2013
Fair value, beginning of period	$	1,817	$	8,240
Issuance of warrants		4,844		—
Exercise of warrants		—		(4,686)
Change in fair value		(1,083)		(1,737)
Fair value, end of period	$	5,578	$	1,817