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Long-term Debt and Other Credit Arrangements - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 19, 2022
Apr. 30, 2022
Apr. 30, 2023
Jun. 27, 2022
Feb. 01, 2020
Dec. 13, 2019
May 06, 2013
Debt Instrument [Line Items]              
Loan agreement             $ 20,000,000
Collateralized debt instrument, borrowing capacity         $ 15,000,000 $ 20,000,000  
Long-term debt       $ 0      
Unused and available credit facility   $ 2,400,000          
Short-term borrowings   1,588,000 $ 3,587,000        
International Subsidiaries              
Debt Instrument [Line Items]              
Short-term borrowings     39,000        
Expiration Date, Period One | Bank Guarantees              
Debt Instrument [Line Items]              
Bank Guarantees outstanding to customers   6,000,000.0          
Advance Amount One              
Debt Instrument [Line Items]              
Credit facility outstanding   1,600,000          
Advance Amount Two              
Debt Instrument [Line Items]              
Credit facility outstanding   $ 716,000          
Advances              
Debt Instrument [Line Items]              
Interest rate at period end   4.75%          
Line of Credit | Base Rate              
Debt Instrument [Line Items]              
Debt, variable interest rate   0.75%          
Line of Credit | LIBOR              
Debt Instrument [Line Items]              
Debt, variable interest rate   4.00%          
Term Loan B | Expiration Date, Period One              
Debt Instrument [Line Items]              
Bank Guarantees outstanding to customers   $ 8,200,000 5,200,000        
Term Loan B | Expiration Date, Period Two              
Debt Instrument [Line Items]              
Bank Guarantees outstanding to customers   111,000 142,000        
Term Loan B | Expiration Date, Period Three              
Debt Instrument [Line Items]              
Bank Guarantees outstanding to customers   9,000 3,000        
Term Loan B | Expiration Date, Period Four              
Debt Instrument [Line Items]              
Bank Guarantees outstanding to customers   3,000 233,000        
Term Loan B | Expiration Date, Period Five              
Debt Instrument [Line Items]              
Bank Guarantees outstanding to customers   $ 249,000          
Revolving Credit Facility | Credit Agreement, Mid Cap Funding IV Trust | Line of Credit              
Debt Instrument [Line Items]              
Loan agreement $ 15,000,000            
Credit facility outstanding     3,548,000        
Unused and available credit facility     $ 10,286,000        
Interest rate at period end     9.02%        
Additional tranche available, minimum amount 1,000,000            
Maximum borrowing availability $ 30,000,000            
Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Credit Agreement, Mid Cap Funding IV Trust | Line of Credit              
Debt Instrument [Line Items]              
Debt, variable interest rate 4.10%