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Other Accrued Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Payables and Accruals [Abstract]    
Current portion of warranty accrual $ 670 $ 640
Website commissions 722 558
Accrued interest 258
Accrued expenses 376 177
Rent-related party 76
Total other accrued liabilities $ 2,026 $ 1,451 [1]
[1] See Note 2, ''-Correction of Immaterial Misstatements in Prior Period Financial Statements''.