Balance
beginning of
year

Additions
(Deductions)
charged to
costs and
expenses

Charge off’s
and other

Balance
end of
year

Allowance for doubtful accounts:

2011

$

107

$

9

$

(9

)

$

107

2010

95

39

(27

)

107

2009

73

53

(31

)

95

Allowance for excess and obsolete inventories:

2011

$

270

$

70

$

(59

)

$

281

2010

206

106

(42

)

270

2009

123

100

(17

)

206

Valuation allowance for deferred tax assets:

2011

$

9

$

4

$

—

$

13

2010

8

1

—

9

2009

10

—

(2

)

8

Warranty reserve:

2011

$

215

$

40

$

(44

)

$

211

2010

217

52

(54

)

215

2009

114

144

(41

)

217