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Schedule II - Valuation And Qualifying Accounts
 12 Months Ended
Dec. 31, 2011
Schedule II - Valuation And Qualifying Accounts [Abstract]  
Schedule II - Valuation And Qualifying Accounts

NORTHWEST PIPE COMPANY

VALUATION AND QUALIFYING ACCOUNTS

(Dollars in thousands)

 

     Balance at
Beginning
of Period		      Charged to
Profit  and
Loss		      Deduction
from Reserves		     Balance at
End of
Period		  

Year ended December 31, 2011:

           

Allowance for doubtful accounts

    $ 2,151       $ 3,518       $ (4,019 )    $ 1,650   

Valuation allowance for deferred tax assets

      105         872         (51 )      926   

Year ended December 31, 2010:

           

Allowance for doubtful accounts

    $ 793       $ 3,118       $ (1,760 )    $ 2,151   

Valuation allowance for deferred tax assets

      470         —           (365 )      105   

Year ended December 31, 2009:

           

Allowance for doubtful accounts

    $ 701       $ 960       $ (868 )    $ 793   

Valuation allowance for deferred tax assets

      290         244         (64 )      470