The following table sets forth the computation of basic and diluted net income per share:

	Three Months Ended July 31,						Six Months Ended July 31,
	2012			2011			2012			2011
	(in thousands)						(in thousands)
Net income	$	959		$	3,070		$	2,803		$	4,090
Less: Dividends declared		(1,110	)		(947	)		(2,187	)		(1,881	)
Undistributed net income (loss)	$	(151	)	$	2,123		$	616		$	2,209

Net income per share – Class A Common Stock
Dividends declared	$	920		$	785		$	1,810		$	1,559
Allocation of undistributed net income		(125	)		1,759			509			1,830
Net income attributable to Class A common stock	$	795		$	2,544		$	2,319		$	3,389

Weighted average shares of Class A common stock outstanding—basic		12,649			12,900			12,671			12,849
Weighted average potential shares of Class A common stock		433			397			473			393
Weighted average shares of Class A common stock and potential common shares outstanding—diluted		13,082			13,297			13,144			13,242

Basic net income per Class A common share	$	0.06		$	0.20		$	0.18		$	0.26
Diluted net income per Class A common share	$	0.06		$	0.19		$	0.18		$	0.26

Net income per share – Class B Common Stock
Dividends declared	$	190		$	162		$	377		$	322
Allocation of undistributed net income		(26	)		364			107			379
Net income attributable to Class B common stock	$	164		$	526		$	484		$	701

Weighted average shares of Class B common stock outstanding—basic		3,164			3,195			3,166			3,189
Weighted average potential shares of Class B common stock		100			99			108			99
Weighted average shares of Class B common stock and potential common shares outstanding—diluted		3,264			3,294			3,274			3,288

Basic net income per Class B common share	$	0.05		$	0.16		$	0.15		$	0.22
Diluted net income per Class B common share	$	0.05		$	0.16		$	0.15		$	0.21