Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Details)

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Acquisitions (Details) (USD $)
6 Months Ended 1 Months Ended 1 Months Ended 1 Months Ended 1 Months Ended
Sep. 30, 2011
Jun. 30, 2011
Cornell Dubilier Foil, LLC
item
Jun. 13, 2011
Cornell Dubilier Foil, LLC
Aug. 31, 2012
Niotan Incorporated
Feb. 29, 2012
Niotan Incorporated
Feb. 21, 2012
Niotan Incorporated
Feb. 29, 2012
Niotan Incorporated
Developed technology
Feb. 21, 2012
Niotan Incorporated
Developed technology
Feb. 29, 2012
Niotan Incorporated
Software
Feb. 21, 2012
Niotan Incorporated
Software
Acquisitions                    
Purchase price     $ 15,000,000              
Purchase price paid at closing (net of cash received) 11,584,000 11,600,000     30,500,000          
Purchase price installment paid on the first anniversary of the acquisition closing date     1,000,000              
Purchase price installment payable on each of the next two anniversaries of the acquisition closing date     1,000,000              
Number of remaining anniversaries from closing date on which installment payments are due   2                
Additional deferred payments           45,000,000        
Period of payment of additional deferred payments after the closing         30 months          
First installment payment       5,000,000            
Aggregate amount of quarterly royalty payments           10,000,000        
Discounted purchase price                    
Cash at closing         30,656,000          
Deferred payments (discounted)           41,938,000        
Royalty payments (discounted)           8,975,000        
Working capital adjustment     500,000     421,000        
Discounted purchase price           81,990,000        
Allocations of the aggregate purchase price                    
Cash           153,000        
Accounts receivable           479,000        
Inventories           7,305,000        
Prepaid expenses           186,000        
Property, plant and equipment           15,122,000        
Goodwill     1,100,000     35,584,000        
Intangible assets     1,600,000     22,420,000   22,300,000   120,000
Deferred income taxes           311,000        
Other noncurrent assets           1,303,000        
Current Liabilities           (873,000)        
Total net assets acquired           $ 81,990,000        
Additional disclosures                    
Useful Life             18 years   4 years