Years ended July 31,

2012

2011

2010

Numerator

Net (loss) income (numerator for basic and diluted Class A net income per share)

$

(17,911

)

$

108,652

$

81,956

Less:

Restricted stock dividends

(2029

)

(223

)

(147

)

Numerator for basic and diluted Class A net income per share

$

(18,140

)

$

108,429

$

81,809

Less:

Preferential dividends

(818

)

(820

)

(816

)

Preferential dividends on dilutive stock options

(5

)

(6

)

(11

)

Numerator for basic and diluted Class B net income per share

$

(18,963

)

$

107,603

$

80,982

Denominator:

Denominator for basic net (loss) income per share for both Class A and B

52,453

52,639

52,402

Plus: effect of dilutive stock options

—

494

544

Denominator for diluted net (loss) income per share for both Class A and B

52,453

53,133

52,946

Class A common stock net (loss) income per share calculation:

Basic

$

(0.35

)

$

2.06

$

1.56

Diluted

$

(0.35

)

$

2.04

$

1.55

Class B common stock net (loss) income per share calculation:

Basic

$

(0.36

)

$

2.04

$

1.55

Diluted

$

(0.36

)

$

2.03

$

1.53