Quarterly report pursuant to Section 13 or 15(d)

Changes in Initial Product Warranty Accrual and Expenses Under Initial and Extended Warranties (Detail)

v3.4.0.3
Changes in Initial Product Warranty Accrual and Expenses Under Initial and Extended Warranties (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Movement in Standard Product Warranty Accrual      
Initial warranty accrual, beginning balance $ 2,188 $ 1,449  
Provision for estimated warranty cost 61 451  
Warranty expenditures (189) (233)  
Initial warranty accrual, ending balance 2,060 1,667  
Less warranty accrual, long-term 973 640 $ 843
Total warranty accrual, current portion $ 1,087 $ 1,027 $ 1,345