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, convertible preferred stock, convertible notes and other potentially dilutive common stock equivalents outstanding during the period. Diluted loss per share is based on the if-converted method or the treasury stock method, as applicable, and includes the effect from the potential issuance of common stock, such as shares issuable pursuant to the conversion of convertible preferred stock, convertible notes and 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 is as follows:



	Three months ended March 31,
($ in thousands except share and per share data)	2019			2018
Loss per share - basic:
Net loss	$	(3,666	)	$	(2,901	)
Less: Dividend paid in-kind to preferred stockholders	(85		)	(82		)
Less: Deemed dividend on preferred stock	(140		)	(121		)
Net loss attributable to common stockholders - basic	$	(3,891	)	$	(3,104	)

Numerator for basic loss per share	$	(3,891	)	$	(3,104	)
Denominator for basic loss per share	9,758,332			5,672,976
Basic loss per common share	$	(0.40	)	$	(0.55	)

Loss per share - diluted:
Numerator for basic loss per share	$	(3,891	)	$	(3,104	)
Adjust: Warrant revaluation income for dilutive warrants	—			—
Net loss attributable to common stockholders - diluted	$	(3,891	)	$	(3,104	)

Denominator for basic loss per share	9,758,332			5,672,976
Adjust: Incremental shares underlying dilutive “in the money” warrants outstanding	—			—
Denominator for diluted loss per share	9,758,332			5,672,976
Diluted net loss per common share	$	(0.40	)	$	(0.55	)

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 March 31,
	2019	2018
“In the money” stock options	—	—
“Out of the money” stock options	286,327	266,539
“In the money” warrants	—	—
“Out of the money” warrants	7,392,966	4,969,702
Shares underlying convertible notes	1,056,068	1,056,068
Shares underlying convertible accrued interest on convertible notes	113,517	67,824
Shares underlying convertible preferred stock	744,000	712,000