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Acquisitions - Additional Information (Detail)
0 Months Ended 3 Months Ended 9 Months Ended 0 Months Ended 9 Months Ended
Jan. 15, 2014
Thomas Plant
USD ($)
Jan. 15, 2014
Thomas Plant
GBP (£)
Sep. 30, 2014
Thomas Plant
USD ($)
Sep. 30, 2013
Thomas Plant
USD ($)
Sep. 30, 2014
Thomas Plant
USD ($)
Sep. 30, 2013
Thomas Plant
USD ($)
Sep. 30, 2014
Thomas Plant
GBP (£)
Jan. 15, 2014
Thomas Plant
USD ($)
Jan. 15, 2014
Thomas Plant
GBP (£)
Oct. 31, 2014
Thomas Plant
Subsequent Event
USD ($)
Oct. 31, 2014
Thomas Plant
Subsequent Event
GBP (£)
Sep. 30, 2014
Thomas Plant
Cost of Sales
USD ($)
Sep. 30, 2014
Other Acquisitions
USD ($)
Business Acquisition [Line Items]                          
Percentage of equity interests acquired               100.00% 100.00%        
Business acquisition cash paid $ 61,500,000 £ 37,400,000                      
Business acquisition, issuance of common stock shares 581,432 581,432                      
Business acquisition, common stock value 9,000,000 5,500,000                      
Business acquisition, contingent cash consideration payable               9,000,000 5,500,000        
Projected benefit obligation     11,700,000   11,700,000   7,100,000            
Discount rate of obligation plan     3.30%   3.30%                
Additional payment on plan settlement                   2,400,000 1,500,000    
Net impact on plan settlements                   0      
Net periodic benefit cost     0   0                
Net Sales     16,800,000   47,200,000                
Income from operations     1,600,000   1,900,000                
Business combination increase in fair value of inventory                       900,000  
Amortization of intangible assets       900,000   2,600,000              
Elimination of acquisition costs         900,000                
Interest Expense and Debt Issuance Cost       400,000   1,400,000              
Adjustment to compensation expense           2,100,000              
Business acquisition cash paid $ 61,302,000                       $ 5,300,000