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CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL - USD ($)
shares in Thousands, $ in Thousands
Total
General Partner
Common Stock
Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Sep. 30, 2021 $ 278,204 $ (2,821) $ 295,063 $ (14,038)
Beginning Balance, unit at Sep. 30, 2021   326 39,046  
Net Income (Loss) 35,288 $ 281 $ 35,007  
Unrealized gain on pension plan obligation (436)     (436)
Tax effect of unrealized gain (loss) on pension plan obligation 129     129
Unrealized gain (loss) on captive insurance collateral (4,952)     (4,952)
Tax effect of unrealized gain (loss) on captive insurance collateral 1,043     1,043
Unrealized gain (loss) on interest rate hedge 3,607     3,607
Tax effect of unrealized gain (loss) on interest rate hedge (959)     (959)
Distributions (23,192) (1,116) (22,076)  
Retirement of units (30,817)   $ (30,817)  
Retirement of units, shares     (2,954)  
Ending Balance at Sep. 30, 2022 257,915 $ (3,656) $ 277,177 (15,606)
Ending Balance, Unit at Sep. 30, 2022   326 36,092  
Net Income (Loss) 31,945 $ 288 $ 31,657  
Unrealized gain on pension plan obligation 1,463     1,463
Tax effect of unrealized gain (loss) on pension plan obligation (405)     (405)
Unrealized gain (loss) on captive insurance collateral 1,671     1,671
Tax effect of unrealized gain (loss) on captive insurance collateral (352)     (352)
Unrealized gain (loss) on interest rate hedge (399)     (399)
Tax effect of unrealized gain (loss) on interest rate hedge 105     105
Distributions (23,744) (1,247) (22,497)  
Retirement of units (4,475)   $ (4,475)  
Retirement of units, shares     (489)  
Ending Balance at Sep. 30, 2023 263,724 $ (4,615) $ 281,862 (13,523)
Ending Balance, Unit at Sep. 30, 2023   326 35,603  
Net Income (Loss) 35,223 $ 311 $ 34,912  
Unrealized gain on pension plan obligation 1,291     1,291
Tax effect of unrealized gain (loss) on pension plan obligation (262)     (262)
Unrealized gain (loss) on captive insurance collateral 1,849     1,849
Tax effect of unrealized gain (loss) on captive insurance collateral (390)     (390)
Unrealized gain (loss) on interest rate hedge (1,928)     (1,928)
Tax effect of unrealized gain (loss) on interest rate hedge 512     512
Distributions (25,038) (1,410) (23,628)  
Retirement of units (11,088)   $ (11,088)  
Retirement of units, shares     (1,016)  
Ending Balance at Sep. 30, 2024 $ 263,893 $ (5,714) $ 282,058 $ (12,451)
Ending Balance, Unit at Sep. 30, 2024   326 34,587