v3.26.1
Pay vs Performance Disclosure - USD ($)
 5 Months Ended 12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
May 31, 2026
Summary Compensation Table Total for PEO ($)(1) [1] $ 519,026 $ 631,696 $ 755,904  
Compensation Actually Paid to PEO ($) 519,026 631,696 755,904  
Average Summary Compensation Table Total for Non-PEO Named Executive Officers ($)(2) [2] 422,394 488,334 614,489  
Average Compensation Actually Paid to Non-PEO Named Executive Officers ($) 422,394 488,334 614,489  
Value of Initial Fixed $100 Investment Based On Total Shareholder Return ($) 277 199 266  
Net Income ($) 8,563,675 9,413,136 8,998,762  
Named Executive Officers, Footnote      

(1) Mr. Sopko was our principal executive officer ("PEO") for the fiscal years ended May 31, 2026, 2025 and 2024.

(2) The non-PEO named executive officers for whom the average compensation is presented in these tables are Alan R. Klembczyk and Paul M. Heary.
Compensation Actually Paid vs. Total Shareholder Return      

The chart below illustrates the relationship between the PEO and average non-PEO NEO CAP amounts and the Company's total shareholder return ("TSR") during fiscal years 2024, 2025 and 2026.

 

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Compensation Actually Paid vs. Net Income      

The chart below illustrates the relationship between the PEO and Non-PEO NEO CAP amounts and the Company's net income during fiscal years 2024, 2025 and 2026.

 

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Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table        
Adjustment to Compensation Amount (162,832) (79,980) (121,433)  
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested        
Adjustment to Compensation Amount 0 0 0  
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested        
Adjustment to Compensation Amount 0 0 0  
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year        
Adjustment to Compensation Amount 162,832 79,980 121,433  
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year        
Adjustment to Compensation Amount 0 0 0  
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year        
Adjustment to Compensation Amount 0 0 0  
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year        
Adjustment to Compensation Amount $ 0 $ 0 $ 0  
[1] Mr. Sopko was our principal executive officer ("PEO") for the fiscal years ended May 31, 2026, 2025 and 2024.
[2] The non-PEO named executive officers for whom the average compensation is presented in these tables are Alan R. Klembczyk and Paul M. Heary.