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Receivables - Components of Receivables (Detail) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Receivables [Abstract]    
Escrow proceeds and other accounts receivable, net $ 26,736 $ 35,625
Warranty insurance receivable 46,267 46,875
Total receivables $ 73,003 $ 82,500