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OTHER ACCRUED LIABILITIES - Schedule of Other Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]    
Accrued taxes $ 1,313 $ 1,815
Accrued interest expense 633 148
Accrued dividend payable 448 449
Accrued sales rebates 152 141
Accrued health insurance costs 67 67
Accrued warranty 58 56
Other 25 21
Total other accrued liabilities $ 2,696 $ 2,697