Acquisitions and Disposals - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		0 Months Ended	9 Months Ended				3 Months Ended		9 Months Ended	0 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 30, 2013 Permalok Corporation [Member]	Sep. 30, 2014 Permalok Corporation [Member]	Dec. 30, 2013 Permalok Corporation [Member]	Sep. 30, 2014 Accrued Liabilities [Member] Permalok Corporation [Member]	Sep. 30, 2014 Other Long-term Liabilities [Member] Permalok Corporation [Member]	Sep. 30, 2014 Cost of Sales [Member] Permalok Corporation [Member]	Jun. 30, 2014 Cost of Sales [Member] Permalok Corporation [Member]	Sep. 30, 2014 Cost of Sales [Member] Permalok Corporation [Member]	Mar. 30, 2014 Disposal of OCTG Business [Member]	Sep. 30, 2014 Disposal of OCTG Business [Member]	Mar. 31, 2014 Disposal of OCTG Business [Member]	Sep. 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	(1,414,000)		(13,497,000)											1,400,000	(12,100,000)	13,500,000
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			29,791,000										31,600,000			29,800,000
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								17,000	2,700,000
Business acquisition, reduction in cost of sales			$ (1,736,000)							$ 900,000	$ 900,000	$ 1,700,000