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Note K - Derivatives and Hedging (Details Textual)
€ in Millions, SFr in Millions, $ in Millions
3 Months Ended
Aug. 18, 2021
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
EUR (€)
Dec. 31, 2022
CHF (SFr)
Accumulated Other Comprehensive Income (Loss) Cumulative Cash Flow Hedges, Gain (Loss)   $ 0.5    
Deferred Tax Assets, Derivative Instruments   $ 0.1    
Wells Fargo Bank, N.A. [Member] | Credit Agreement [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]        
Debt Instrument, Basis Spread on Variable Rate   1.29%    
Wells Fargo Bank, N.A. [Member] | Credit Agreement [Member] | Term Loan [Member]        
Debt Instrument, Face Amount $ 10.0      
Wells Fargo Bank, N.A. [Member] | Credit Agreement [Member] | Term Loan [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]        
Debt Instrument, Basis Spread on Variable Rate 1.80%      
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]        
Derivative, Notional Amount   $ 12.5   SFr 11.7
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]        
Derivative, Notional Amount   $ 23.3 € 20.2  
Interest Rate Swap [Member]        
Derivative, Fixed Interest Rate 2.40%