Computation of Net Income (Loss) Per Share (Tables)

9 Months Ended

Oct. 31, 2013

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Net Income (Loss) Per Share

The following summarizes the calculation of basic and diluted net income (loss) per share:

	Three Months Ended October 31,				Nine Months Ended October 31,
	2013		2012		2013			2012
Numerator:
Net income (loss)	$	516	$	159	$	(823	)	$	1,103
Denominator:
Weighted average common shares, basic		13,341,235		13,264,018		13,318,839			6,133,987
Dilutive effect of:
Options to purchase common and preferred stock		1,351,169		1,365,658		—			1,357,992
Warrants to purchase common stock		12,118		9,588		—			51,443
Convertible preferred stock		—		—		—			4,760,301
Weighted average common shares, diluted		14,704,522		14,639,264		13,318,839			12,303,723
Basic net income (loss) per share	$	0.04	$	0.01	$	(0.06	)	$	0.18
Diluted net income (loss) per share	$	0.04	$	0.01	$	(0.06	)	$	0.09

Equity Instruments Excluded from Diluted Net Income (Loss) Per Common Share

The following equity instruments have been excluded from diluted net income (loss) per common share as they would be anti-dilutive:

	Three Months Ended October 31,				Nine Months Ended October 31,
	2013		2012		2013		2012
Options and warrants to purchase common and preferred stock		692,165		561,482		2,319,276		602,319