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Valuation and Qualifying Accounts
12 Months Ended
Dec. 31, 2011
Valuation and Qualifying Accounts [Abstract]  
Valuation and Qualifying Accounts
Schedule II - Valuation and Qualifying Accounts – Years ended December 31, 2011, 2010, and 2009
(in thousands)
 
Col. A
Col. B
Col. C(1)
Col. C(2)
Col. D
Col. E
Additions
Balance at
Charged to
Charged
Deductions
Balance
Beginning
Costs and
to Other
Charged to
at End
of Period
Expenses
Accounts
Reserves
of Period
Allowance for doubtful accounts receivable:
2011
$ 30 $ - $ - $ - $ 30
2010
$ 30 $ - $ - $ - $ 30
2009
$ 30 $ - $ - $ - $ 30
Inventory reserves:
2011
$ 989 $ 450 $ - $ 36 $ 1,403
2010
$ 1,137 $ 305 $ - $ 453 $ 989
2009
$ 738 $ 399 $ - $ - $ 1,137
Warranty reserves:
2011
$ 0 $ - $ - $ - $ 0
2010
$ 0 $ - $ - $ - $ 0
2009
$ 118 $ - $ - $ 118 $ 0
Deferred tax asset valuation allowance:
2011
$ 41,759 $ - ($ 1,283 ) $ - $ 40,476
2010
$ 42,770 $ - ($ 1,011 ) $ - $ 41,759
2009
$ 42,481 $ - $ 289 $ - $ 42,770