Annual report pursuant to Section 13 and 15(d)

Quarterly Operating Results (Unaudited) - Summary of Quarterly Results of Operation (Parenthetical) (Detail)

v2.4.0.8
Quarterly Operating Results (Unaudited) - Summary of Quarterly Results of Operation (Parenthetical) (Detail) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]            
Loss on contract recognized $ (18,200,000) $ (10,900,000) $ (600,000)      
Provision for loss on contract receivable          $ 14,501,000