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Accrued and Other Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Payables and Accruals [Abstract]    
Employee related expenses $ 1,894 $ 667
Accrued construction related expenses 948 2,197
Accrued professional fees 465 529
Accrued royalties 1,780 206
Accrued freight and delivery charges 2,556 2,197
Deferred rent 712 861
Other accrued liabilities 37 919
Total accrued liabilities $ 8,392 $ 7,576