XML 70 R63.htm IDEA: XBRL DOCUMENT v3.20.1
PRODUCT WARRANTIES (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Movement in Standard Product Warranty Accrual [Roll Forward]    
Beginning balance $ 348 $ 233
Provision for product warranties 321 253
Product warranty expenses incurred (217) (138)
Accrued product warranties $ 452 $ 348