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Note 7 - Other Non-current Assets (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Schedule of Other Assets, Noncurrent [Table Text Block]

		*September 30,*				*December 31,*
		*2020*				*2019*
Permitting costs⁽¹⁾		$	7,362			$	2,621
Enterprise resource planning system, net			2,159				3,181
Rio Grande Site Lease initial direct costs			5,575				946
Total other non-current assets, net		$	15,096			$	6,748