Quarterly report pursuant to Section 13 or 15(d)

Warranty Liability (Details)

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Warranty Liability (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Warranty liability      
Period of warranty history used in estimating warranty costs 5 years    
Other long-term liabilities $ 16,248   $ 17,004
Accrued expenses and other current liabilities 18,050   21,004
Company's warranty liability:      
Balance at the beginning of the period 5,677 $ 6,160  
Warranty provision 662 626  
Claims paid/settlements (1,709) (1,505)  
Balance at the end of the period 4,630 $ 5,281  
Warranty Reserves      
Warranty liability      
Other long-term liabilities 1,883   2,415
Accrued expenses and other current liabilities $ 2,747   $ 3,262
Snow and ice control equipment      
Warranty liability      
Warranty period 2 years    
Parts and accessories      
Warranty liability      
Warranty period 1 year    
Certain snowplows      
Warranty liability      
Warranty period 1 year