Note 4 - Credit Facilities (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Debt [Table Text Block]

	Effective Interest Rate as of
Used Availability:	December 31, 2021			2022		2023
USA – North Mill Capital		5.38	%		9,680		–
USA – Resource Plus Sellers		1.87	%		300		700
Australia – National Australia Bank		6.76	%		118		–
China – People’s Bank of China		3.71	%		157		–
China – Industrial Bank		6.17	%		472		–
China – Industrial and Commercial Bank of China		4.23	%		315		–
China – Construction Bank		5.33	%		–		–
Mexico – Ve Por Mas		7.76	%		–		–
Mexico – Bancomer Bank		9.92	%		–		–
Total				$	11,042	$	700

Credit And Debt Facilities Unused Availability [Table Text Block]

	December 31, 2021		December 31, 2020
Unused Availability:
United States, (excluding Resource Plus facility)	$	5,319	$	10,238
Mexico		743		262
China		157		–
Australia		455		463
Total Unused Availability	$	6,674	$	10,963