Col. A

Col. B
Beginning

Balance

Col. C
Charged to
Expenses

Col. E
Deductions from
Reserves

Col. F
Ending
Balance

Allowance for doubtful accounts for the period ended:

January 31, 2012

$

200

$

187

$

37

$

350

January 31, 2011

$

200

$

79

$

79

$

200

January 31, 2010

$

200

$

127

$

127

$

200

Inventory valuation reserve for the period ended, as adjusted:

period ended:

January 31, 2012

$

3,750

$

150

$

—

$

3,900

January 31, 2011

$

3,500

$

250

$

—

$

3,750

January 31, 2010

$

3,150

$

350

$

—

$

3,500

Warranty reserve for the period ended:

January 31, 2012

$

2,300

$

(64

)

$

836

$

1,400

January 31, 2011

$

1,675

$

1,519

$

894

$

2,300

January 31, 2010

$

1,950

$

710

$

985

$

1,675

Product, general, workers’ compensationand automobile liability reserves for the period ended:

January 31, 2012

$

2,770

$

145

$

—

$

2,915

January 31, 2011

$

2,614

$

156

$

—

$

2,770

January 31, 2010

$

2,345

$

269

$

—

$

2,614

Deferred tax valuation allowance for the period ended:

January 31, 2012

$

14,548

$

8,311

$

—

$

22,859

January 31, 2011

$

490

$

14,058

$

—

$

14,548

January 31, 2010

$

927

$

269

$

706

$

490