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Note 20 - Subsequent Events	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Subsequent Events [Text Block]	20.  SUBSEQUENT EVENTS Investment in innolectric AG On February 1, 2023, the Company closed on a noncontrolling (one-third) investment in Germany-based innolectric AG ("innolectric") for consideration of €8.0 million (approximately $8.8 million). Under the terms of the investment agreement, if innolectric achieves certain profitability thresholds within a specified timeframe, the Company would be committed to acquiring the remaining shares of innolectric at that time. Credit Agreement Items On January 12, 2023, the Company amended its New Credit Agreement for the purpose of transitioning its reference rate related to interest from LIBOR to SOFR. In connection with this change to its credit agreement, on January 18, 2023, the Company amended its two interest rate swap agreements, further described in Note 12, "Derivative Instruments and Hedging Activities" to also transition the related reference rates in these agreements from LIBOR to SOFR, effective January 31, 2023.  In January 2023, the Company borrowed an additional $5.0 million from its revolving credit facility.

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- Definition

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI https://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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