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CONDENSED CONSOLIDATED STATEMENT 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 14,489 $ 122 $ 14,367  
Unrealized gain on pension plan obligation 224     224
Tax effect of unrealized gain on pension plan obligation (45)     (45)
Unrealized gain (loss) on captive insurance collateral (612)     (612)
Tax effect of unrealized gain (loss) on captive insurance collateral 129     129
Unrealized gain (loss) on interest rate hedges 718     718
Tax effect of unrealized gain (loss) on interest rate hedges (193)     (193)
Distributions (5,790) (264) (5,526)  
Retirement of units (11,765)   $ (11,765)  
Retirement of units, shares     (1,104)  
Ending Balance at Dec. 31, 2021 275,359 $ (2,963) $ 292,139 (13,817)
Ending Balance, Unit at Dec. 31, 2021   326 37,942  
Beginning Balance at Sep. 30, 2022 257,915 $ (3,656) $ 277,177 (15,606)
Beginning Balance, unit at Sep. 30, 2022   326 36,092  
Net income 13,539 $ 122 $ 13,417  
Unrealized gain on pension plan obligation 380     380
Tax effect of unrealized gain on pension plan obligation (97)     (97)
Unrealized gain (loss) on captive insurance collateral 355     355
Tax effect of unrealized gain (loss) on captive insurance collateral (74)     (74)
Unrealized gain (loss) on interest rate hedges (377)     (377)
Tax effect of unrealized gain (loss) on interest rate hedges 102     102
Distributions (5,774) (292) (5,482)  
Retirement of units (3,596)   $ (3,596)  
Retirement of units, shares     411  
Ending Balance at Dec. 31, 2022 $ 262,373 $ (3,826) $ 281,516 $ (15,317)
Ending Balance, Unit at Dec. 31, 2022   326 35,681