Note 21 - Subsequent Event (Details Textual) $ in Thousands		2 Months Ended	12 Months Ended
	Jun. 21, 2022 USD ($)	Sep. 28, 2022 shares	Jul. 31, 2022 USD ($) shares	Jun. 21, 2022 $ / shares shares
UEX Corporation [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners			3.00%
UEX Shares [Member]
Number of Shares Acquired in Investment in Equity Securities (in shares)			18,471,907
Fair Value of Investment in Equity Securities | $			$ 6,914
Equity Securities, FV-NI, Unrealized Gain | $			1,132
UEX Corporation [Member]
Consideration Paid for Investment in Equity Securities | $	$ 3,867		$ 1,914
Number of Shares in Investment in Equity Securities (in shares)			6,844,000
UEX Corporation [Member] | Subsequent Event [Member]
Stock Conversion Rate for An Acquisition		0.09%
Stock Issued During Period, Shares, Acquisitions (in shares)		48,518,745
UEX Corporation [Member] | Private Placement [Member]
Number of Shares Acquired for An Equity Investment (in shares)				11,627,907
Share Price To Acquire Equity Investment (in CAD per share) | $ / shares				$ 0.43