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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

Schedule II—Valuation and Qualifying Accounts

 

      September 30,       September 30,       September 30,       September 30,       September 30,  
    Additions  
    December 31,
2010		     Charged to
Expense		     Charged to
Other
Accounts		     Deductions     December 31,
2011		  

Allowance for doubtful accounts

   $ 490     $ 237     $ (2 )    $ 42     $ 683  

Inventory reserves

     3,781       1,537       1,074       1,233       5,159  

Warranty reserves

     1,314       591       —         1,066       839  

Deferred tax valuation allowance

     26,260       496       —         231       26,525  

 

      September 30,       September 30,       September 30,       September 30,       September 30,  
    Additions  
    December 31,
2009		     Charged to
Expense		     Charged to
Other
Accounts		     Deductions     December 31,
2010		  

Allowance for doubtful accounts

   $ 1,024     $ (216 )    $ (7 )    $ 311     $ 490  

Inventory reserves

     3,990       387       (10 )      586       3,781  

Warranty reserves

     1,211       602       —         499       1,314  

Deferred tax valuation allowance

     25,775       (115 )      —         (600 )      26,260  

 

      September 30,       September 30,       September 30,       September 30,       September 30,  
    Additions  
    December 31,
2008		     Charged to
Expense		     Charged to
Other
Accounts		     Deductions     December 31,
2009		  

Allowance for doubtful accounts

   $ 1,086     $ 188     $ (42 )    $ 208     $ 1,024  

Inventory reserves

     2,850       1,123       17       —         3,990  

Warranty reserves

     1,026       436       —         251       1,211  

Deferred tax valuation allowance

     23,605       360       —         (1,810 )      25,775