Loss Per Share

Basic loss per share is computed by dividing net loss for the period by the weighted-average number of shares of common stock outstanding during that period. The diluted loss per share calculation gives effect to dilutive stock options, warrants and other potentially dilutive common stock equivalents outstanding during the period. Diluted loss per share is based on the treasury stock method and includes the effect from potential issuance of common stock, such as shares issuable pursuant to the exercise of stock options and warrants, assuming the exercise of all in-the-money common stock equivalents based on the average market price during the period. Common stock equivalents have been excluded where their inclusion would be anti-dilutive.

Details in the computation of basic and diluted loss per share are as follows:



	Three months ended June 30,						Six months ended June 30,
($ in thousands, except share and per share data)	2016			2015			2016			2015
Loss per share - basic:
Numerator for basic loss per share	$	(8,092	)	$	(6,756	)	$	(9,499	)	$	(15,281	)
Denominator for basic loss per share	43,898,785			40,889,732			43,898,785			40,875,704
Basic loss per common share	$	(0.18	)	$	(0.17	)	$	(0.22	)	$	(0.37	)
Loss per share - diluted:
Numerator for diluted loss per share	$	(8,092	)	$	(6,756	)	$	(9,499	)	$	(15,281	)
Adjust: Warrant revaluation income (expense) for dilutive warrants	—			—			1,958			—
Net loss attributable to common share	$	(8,092	)	$	(6,756	)	$	(11,457	)	$	(15,281	)
Denominator for basic loss per share	43,898,785			40,889,732			43,898,785			40,875,704
Plus: Incremental shares underlying dilutive warrants outstanding	—			—			36,034			—
Denominator for diluted loss per share	43,898,785			40,889,732			43,934,819			40,875,704
Diluted net loss per common share	$	(0.18	)	$	(0.17	)	$	(0.26	)	$	(0.37	)

The following potentially dilutive securities have been excluded from the computations of diluted weighted-average shares outstanding, as their effect would be anti-dilutive:



	Three months ended June 30,		Six months ended June 30,
	2016	2015	2016	2015
“In the money” stock options	216,000	1,482,614	545,500	1,518,957
“Out of the money” stock options	3,979,650	1,654,200	3,556,497	1,442,200
“In the money” warrants	—	1,201,698	—	1,201,698
“Out of the money” warrants	5,340,877	4,831,352	4,751,145	4,831,352

Other securities excluded from the calculation of diluted loss per share:
Stock options with performance condition	—	100,000	—	100,000