Note 6 - Subsequent Event (Details Textual) - SteriQual, Inc. [Member] - Subsequent Event [Member] $ in Millions	Jul. 12, 2023 USD ($) shares
Business Combination, Consideration Transferred	$ 4.2
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) \| shares	38,785
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 3.3
Business Combination, Consideration Transferred, Liabilities Incurred	$ 0.9

Number of shares of equity interests issued or issuable to acquire entity.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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