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Commitments and Contingencies - Additional Information (Detail)
 3 Months Ended 6 Months Ended 150 Months Ended
Oct. 03, 2014
USD ($)
Sep. 30, 2014
USD ($)
Jun. 30, 2015
USD ($)
Cases
Jun. 30, 2015
USD ($)
Cases
Dec. 31, 2014
Cases
Commitments and Contingencies Disclosure [Abstract]          
Cumulative settlement payments for cases involving asbestos-related claims   $ 500,000   $ 700,000  
Average cost per settled claim excluding legal fees     $ 25,000 $ 25,000  
Number of claims pending | Cases     215 215 195
Number of new cases filed | Cases     27    
Number of cases dismissed | Cases     7    
Number of cases settled | Cases     0    
Settlement recovering expense   $ 200,000      
Loss amount awarded for damage $ 600,000        
Loss amount not paid under the contract $ 200,000        
Loss contingency settlement terms     After a trial on January 12, 2015, on February 27, 2015, the Court issued Findings of Fact and Conclusions of Law that provide that we and Kirk & Blum breached our contract with Viron and that Viron is entitled to damages in the amount of approximately $0.6 million plus attorneys' fees. Additionally, the Court concluded that we and Kirk & Blum are not entitled to an offset for the invoiced amounts of $0.2 million not paid by Viron under the contract.    
Assessment regarding Loss contingency impact Description     We are not aware of pending claims or assessments, other than as described above, which may have a material adverse impact on our liquidity, financial position, results of operations, or cash flows.