Note 8 - Accounts Payable and Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	December 31,
	2019		2018
Accrued production fees	$	1,946	$	1,648
Accounts payable - trade		1,474		1,944
Accrued utilities and supplies		645		344
Other accrued liabilities		1,613		960
Total accounts payable and accrued liabilities	$	5,678	$	4,896