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Basis of Presentation and Significant Accounting Policies - Summary of Changes in Warranty Liability (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Movement in Standard Product Warranty Accrual [Roll Forward]    
Warranty liability, beginning of period $ 18,117 $ 18,155
Warranty provision during period 7,086 4,570
Warranty payments during period (10,579) (5,870)
Warranty charges related to construction services projects 128 747
Warranty liability, end of period $ 14,752 $ 17,602