XML 43 R30.htm IDEA: XBRL DOCUMENT v3.4.0.3
Basis of Presentation and Significant Accounting Policies - Summary of Changes in Warranty Liability (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Movement in Standard Product Warranty Accrual [Roll Forward]    
Warranty liability, beginning of period $ 18,117 $ 18,155
Warranty provision during period 1,429 1,391
Warranty payments during period (3,290) (2,011)
Warranty charges related to construction services projects 103 180
Warranty liability, end of period $ 16,359 $ 17,715