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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)
3 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Net income $ 3,584,529 $ 4,723,263
Other comprehensive income (loss), net of tax:    
Interest rate swaps 362,274 168,725
Defined benefit plans (11,191) 14,864
OTHER COMPREHENSIVE INCOME, NET OF TAX 351,083 183,589
COMPREHENSIVE INCOME $ 3,935,612 $ 4,906,852