Warranties (Tables)
9 Months Ended
Sep. 30, 2016
Guarantees [Abstract]  
Change in Carrying Value of Company's Warranty Liability
A reconciliation of the change in the carrying value of the Company’s warranty liability for the nine months ended September 30, 2016 and the year ended December 31, 2015 is as follows (in thousands):

 
Nine months ended September 30, 2016
 
Year ended 
 December 31, 2015
Warranty liability:
 
 
 
Beginning balance
$
1,258

 
$
1,262

Accrual
267

 
344

Warranty payments
(170
)
 
(348
)
Ending balance
$
1,355

 
$
1,258