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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 |
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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) |  |  |

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