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Acquisitions and Disposals - Additional Information (Detail) (USD $)
 6 Months Ended 0 Months Ended 6 Months Ended 3 Months Ended 0 Months Ended 6 Months Ended
Jun. 30, 2014
Dec. 30, 2013
Permalok Corporation [Member]
Jun. 30, 2014
Permalok Corporation [Member]
Dec. 30, 2013
Permalok Corporation [Member]
Jun. 30, 2014
Accrued Liabilities [Member]
Permalok Corporation [Member]
Jun. 30, 2014
Other Long-term Liabilities [Member]
Permalok Corporation [Member]
Jun. 30, 2014
Cost of Sales [Member]
Permalok Corporation [Member]
Mar. 30, 2014
Disposal of OCTG Business [Member]
Jun. 30, 2014
Disposal of OCTG Business [Member]
Mar. 30, 2014
Disposal of OCTG Business [Member]
Business Acquisition [Line Items]                    
Business disposal date                 Mar. 30, 2014  
Proceeds from sale of business               $ 42,700,000    
Loss on sale of discontinued operations (12,083,000)             (12,100,000)    
Proceeds held in escrow for indemnification obligations under the purchase agreement                   4,300,000
Payment of capital lease obligations at closing date               5,000,000    
Goodwill written off related to sale of business               4,400,000    
Transaction costs                   1,800,000
Proceeds from sale of business 31,609,000             31,600,000    
Business acquisition date     Dec. 30, 2013              
Business acquisition, percentage       100.00%            
Business acquisition (net of received), amount paid   15,700,000                
Business acquisition, goodwill   5,300,000                
Business acquisition, contingent consideration recorded         500,000 3,000,000        
Business acquisition, reduction in cost of sales $ (877,000)           $ (900,000)