The computation of basic and diluted net income per common share using the two-class method is as follows (in thousands, except per share amounts):



	Three Months Ended September 30,
	2013			2012
Basic net income per common share calculation
Net income	$	7,699		$	899
Less: Undistributed earnings allocated to participating securities	(20		)	(6		)
Net income attributable to common shares—basic	$	7,679		$	893
Weighted-average number of common shares used to compute basic net income per common share	42,496			41,667
Basic net income per common share	$	0.18		$	0.02
Diluted net income per common share calculation
Net income	$	7,699		$	899
Less: Undistributed earnings allocated to participating securities	(19		)	(6		)
Net income attributable to common shares—diluted	$	7,680		$	893
Weighted-average number of common shares used to compute basic net income per common share	42,496			41,667
Dilutive effect of options to purchase common stock	2,106			2,507
Weighted-average number of common shares used to compute diluted net income per common share	44,602			44,174
Diluted net income per common share	$	0.17		$	0.02