Annual report pursuant to Section 13 and 15(d)

INCOME TAXES (Details)

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INCOME TAXES (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2009
Current [Abstract]      
Federal $ 15,306 $ 20,898 $ 15,896
State 3,004 3,191 1,584
Foreign 10,689 9,325 5,963
Total provision for income taxes, current 28,999 33,414 23,443
Deferred 9,557 5,225 7,870
Total 38,556 38,639 31,313
Deferred tax assets [Abstract]      
Postretirement benefits 10,743 9,516  
Environmental reserve 2,430 2,649  
Pension costs 25,524 19,112  
Deferred compensation 1,037 5,898  
Stock options 9,447 7,436  
Other 22,790 16,162  
Deferred tax assets 71,971 60,773  
Deferred tax liabilities:      
Depreciation (3,503) (1,018)  
Goodwill (48,494) (41,281)  
Other (1,441) (2,203)  
Deferred tax liabilities (53,438) (44,502)  
Net deferred tax asset 18,533 16,271  
Reconciliation of the federal statutory tax rate to the consolidated effective tax rate [Abstract]      
Federal statutory tax rate (in hundredths) 35.00% 35.00% 35.00%
Effect of state income taxes, net of federal deduction (in hundredths) 2.50% 2.60% 2.90%
Foreign taxes less than federal statutory rate (in hundredths) (1.30%) (0.70%) (1.80%)
Other (in hundredths) (1.80%) (1.90%) (1.70%)
Effective tax rate (in hundredths) 34.40% 35.00% 34.40%
Foreign subsidiaries income before income taxes 36,870 36,040 24,815
Changes in the total amount of gross unrecognized tax benefits [Roll Forward]      
Balance beginning of year 3,422 3,575 4,370
Increases for tax positions of prior years 0 437 120
Decreases for tax positions of prior years (96) (506) (607)
Increases based on tax positions related to the current year 202 355 674
Decreases due to settlements with taxing authorities (38) (57) (542)
Decreases due to lapse of statute of limitation (562) (382) (440)
Balance end of year 2,928 3,422 3,575
Unrecognized tax benefits that could be recognized in the next 12 months 279    
Increase (decrease) in interest and penalties on tax uncertainties (570)    
Total penalties and interest accrued 1,842 2,412  
Undistributed Earnings of Foreign Subsidiaries [Member]
     
Deferred Tax Liability Not Recognized [Line Items]      
Gross amount on which deferred tax liability is not recognized $ 176,300    
United States - Federal [Member]
     
Open Tax Years By Jurisdiction [Line Items]      
Years subject to examination 2008 and forward    
United States - State [Member]
     
Open Tax Years By Jurisdiction [Line Items]      
Years subject to examination 2008 and forward    
Canada [Member]
     
Open Tax Years By Jurisdiction [Line Items]      
Years subject to examination 2007 and forward    
Europe [Member]
     
Open Tax Years By Jurisdiction [Line Items]      
Years subject to examination 2003 and forward    
United Kingdom [Member]
     
Open Tax Years By Jurisdiction [Line Items]      
Years subject to examination 2009 and forward    
Australia [Member]
     
Open Tax Years By Jurisdiction [Line Items]      
Years subject to examination 2007 and forward    
Asia [Member]
     
Open Tax Years By Jurisdiction [Line Items]      
Years subject to examination 2005 and forward