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Accrued Warranty - (Tables)
 12 Months Ended
Dec. 31, 2017
Product Warranties Disclosures [Abstract]  
Schedule of Accrual for Product Warranty
The following summarizes the activity in the Company's accrual for product warranty (in thousands):
 
Years Ended
December 31,
 
2017
 
2016
Balance at beginning of period
$
338

 
$
228

Accrued warranty expense
54

 
431

Warranty claims paid
(163
)
 
(324
)
Transferred in sale of DuraFit
(110
)
 
—

Translation adjustment
6

 
3

Balance at end of period
$
125

 
$
338