Note 1 - Summary of Significant Accounting Policies - Noncurrent Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Total Property and Equipment, Net	$ 5,833	$ 6,426
Operating Lease Assets	8,983	8,998
Other assets	501	1,173
UNITED STATES
Total Property and Equipment, Net	4,664	5,057
Operating Lease Assets	5,287	5,574
Other assets	501	1,173
MEXICO
Total Property and Equipment, Net	454	681
Operating Lease Assets	2,800	3,117
Other assets	0	0
CHINA
Total Property and Equipment, Net	715	688
Operating Lease Assets	896	307
Other assets	$ 0	$ 0