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WARRANTY OBLIGATIONS (Tables)
 9 Months Ended
Sep. 30, 2016
Product Warranties Disclosures [Abstract]  
Summary of Warranty Activities
The Company’s warranty activities during the three and nine months ended September 30, 2016 and 2015 were as follows (in thousands):
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2016
 
2015
 
2016
 
2015
Warranty obligations, beginning of period
$
30,066

 
$
33,763

 
$
30,547

 
$
33,940

Accruals for warranties issued during period
1,194

 
1,400

 
2,931

 
3,707

Changes in estimates
783

 
498

 
1,548

 
736

Settlements
(2,561
)
 
(2,615
)
 
(6,517
)
 
(5,480
)
Increase due to accretion expense
461

 
272

 
1,279

 
643

Other
406

 
(512
)
 
561

 
(740
)
Warranty obligations, end of period
$
30,349

 
$
32,806

 
$
30,349

 
$
32,806

Less current portion


 


 
$
(6,761
)
 
$
(6,612
)
Noncurrent


 


 
$
23,588

 
$
26,194