Background and Basis of Presentation - Summary of Activity in Product Warranty Accrual Included in Other Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Product warranty accrual, beginning of period $ 17,054 $ 24,838
Provision for warranty claims 1,542 2,269
Warranty claims paid (3,230) (4,169)
Product warranty accrual, end of period $ 15,366 $ 22,938