Inventories - Summary of Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2014	Dec. 31, 2013
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 77,705	$ 75,985
Work in process	68,531	62,115
Finished goods	9,786	11,580
Inventory, Gross, Total	156,022	149,680
Less progress payments	7,127	9,173
Total	$ 148,895	$ 140,507