Note 1 - Basis of Presentation (Details Textual)	Oct. 07, 2022 shares
Mtron Industries Inc [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	0.00%
Spinoff [Member] \| Mtron Industries Inc [Member]
Percentage of Shares Distribution Under Spinoff	100.00%
Right to Receive Common Stock Share for Each Share (in shares)	0.5

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant