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Note 6 - Other Non-current Assets (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Other Assets, Noncurrent [Table Text Block]

		*September 30,*				*December 31,*
		*2022*				*2021*
Permitting costs⁽¹⁾		$	8,250			$	7,644
Enterprise resource planning system, net			—				354
Rio Grande Site Lease initial direct costs			18,051				13,314
Total other non-current assets, net		$	26,301			$	21,312