Amount of cash outflow to acquire investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as investing activity.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=123583714&loc=SL75117360-209713

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 19
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3444-108585

Name:	us-gaap_PaymentsToAcquireEquitySecuritiesFvNi
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Note 9 - Investments in Equity Securities (Details Textual) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Mar. 10, 2023	Jan. 31, 2023	Jan. 31, 2022	Aug. 19, 2022	Jul. 31, 2022
Equity Securities, FV-NI, Total		$ 35,121			$ 14,834
Payments to Acquire Equity Securities, FV-NI		$ 26,328	$ 9,433
Subsequent Event [Member]
Payments to Acquire Equity Securities, FV-NI	$ 14,307
UEX Shares [Member]
Equity Securities, FV-NI, Total				$ 5,830	$ 6,914