Annual report pursuant to Section 13 and 15(d)

Permit and Other Intangible Assets (Details Narrative)

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Permit and Other Intangible Assets (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization expense of intangible asset $ 239 $ 256