Annual report pursuant to Section 13 and 15(d)

International Revenues - Additional Information (Detail)

v2.4.0.8
International Revenues - Additional Information (Detail)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Geographic Areas Revenues From External Customers [Abstract]      
Percentage of revenue related to fabricated structures for delivery outside U.S 6.00% 9.00% 16.00%