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(Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Payables and Accruals [Abstract] |  |
Employee related expenses | $ 1,168 | $ 1,048
Accrued equipment | 0 | 55
Accrued professional fees | 980 | 1,129
Accrued royalties | 2,380 | 2,624
Accrued freight and delivery charges | 1,770 | 2,901
Accrued real estate tax | 2,046 | 1,637
Accrued utilities | 862 | 748
Sales tax liability | 723 | 1,386
Other accrued liabilities | 1,315 | 1,614
Total accrued liabilities | $ 11,244 | $ 13,142

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