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Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2011
Valuation and Qualifying Accounts [Abstract]  
VALUATION AND QUALIFYING ACCOUNTS VALUATION AND QUALIFYING ACCOUNTS

VALUATION AND QUALIFYING ACCOUNTS

Years ended December 31, 2011, 2010 and 2009

 

                                 

Description

   Balance at
Beginning of Period		     (Credit) Charge
to Costs and
Expenses		     Other Charges,
Deductions (1)		     Balance at
End of Period		  

Allowance for doubtful accounts:

                                

Year ended:

                                

December 31, 2011

   $ 309,000     $ 18,000     $ (61,000 )    $ 266,000  

December 31, 2010

     260,000       57,000       (8,000 )      309,000  

December 31, 2009

     300,000       3,000       (43,000 )      260,000  

 

(1) Reflects uncollectible accounts written off, net of recoveries.

 

                                 

Description

   Balance at
Beginning of Period		     (Credit) Charge
to Costs and
Expenses		     Other Charges,
Deductions (2)		     Balance at
End of Period		  

Inventory Reserves:

                                

Year ended:

                                

December 31, 2011

   $ 5,444,000     $ 1,650,000     $ (727,000 )    $ 6,367,000  

December 31, 2010

     5,943,000       1,721,000       (2,220,000 )      5,444,000  

December 31, 2009

     6,358,000       1,010,000       (1,425,000 )      5,943,000  

 

(2) Reflects amounts associated with inventory that have been discarded or sold.