Loss Per Share

The calculation of basic and diluted loss per share was as follows:



	Three Months Ended January 31,
	2016			2015
Numerator
Net loss	$	(11,779	)	$	(4,154	)
Net loss attributable to noncontrolling interest	67			88
Preferred stock dividend	(800		)	(800		)
Net loss attributable to common shareholders	$	(12,512	)	$	(4,866	)
Denominator
Weighted average basic common shares	26,246,271			23,798,744
Effect of dilutive securities ⁽¹⁾	—			—
Weighted average diluted common shares	26,246,271			23,798,744
Basic loss per share	$	(0.48	)	$	(0.20	)
Diluted loss per share (1)	$	(0.48	)	$	(0.20	)

(1)

Diluted loss per share was computed without consideration to potentially dilutive instruments as their inclusion would have been antidilutive. Potentially dilutive instruments include stock options, unvested restricted stock awards, convertible preferred stock and warrants. As of January 31, 2016 and 2015, there were options to purchase 0.3 million shares of common stock, and as of January 31, 2016 and 2015, there were warrants to purchase 0.2 million and 0.4 million shares of common stock, respectively, which were excluded from the computation as they would be antidilutive.