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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 (Loss) 85,281 $ 726 $ 84,555  
Unrealized gain on pension plan obligation 672     672
Tax effect of unrealized gain on pension plan obligation (167)     (167)
Unrealized gain (loss) on captive insurance collateral (3,486)     (3,486)
Tax effect of unrealized gain (loss) on captive insurance collateral 735     735
Unrealized gain (loss) on interest rate hedges 2,890     2,890
Tax effect of unrealized gain (loss) on interest rate hedges (768)     (768)
Distributions (17,350) (821) (16,529)  
Retirement of units (27,309)   $ (27,309)  
Retirement of units, shares     (2,583)  
Ending Balance at Jun. 30, 2022 318,702 $ (2,916) $ 335,780 (14,162)
Ending Balance, Unit at Jun. 30, 2022   326 36,463  
Beginning Balance at Mar. 31, 2022 340,354 $ (2,524) $ 357,020 (14,142)
Beginning Balance, unit at Mar. 31, 2022   326 36,950  
Net Income (Loss) (10,587) $ (93) $ (10,494)  
Unrealized gain on pension plan obligation 224     224
Tax effect of unrealized gain on pension plan obligation (61)     (61)
Unrealized gain (loss) on captive insurance collateral (812)     (812)
Tax effect of unrealized gain (loss) on captive insurance collateral 171     171
Unrealized gain (loss) on interest rate hedges 623     623
Tax effect of unrealized gain (loss) on interest rate hedges (165)     (165)
Distributions (5,918) (299) (5,619)  
Retirement of units (5,127)   $ (5,127)  
Retirement of units, shares     (487)  
Ending Balance at Jun. 30, 2022 318,702 $ (2,916) $ 335,780 (14,162)
Ending Balance, Unit at Jun. 30, 2022   326 36,463  
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 (Loss) 51,674 $ 468 $ 51,206  
Unrealized gain on pension plan obligation 1,144     1,144
Tax effect of unrealized gain on pension plan obligation (305)     (305)
Unrealized gain (loss) on captive insurance collateral 1,080     1,080
Tax effect of unrealized gain (loss) on captive insurance collateral (227)     (227)
Unrealized gain (loss) on interest rate hedges (510)     (510)
Tax effect of unrealized gain (loss) on interest rate hedges 137     137
Distributions (17,624) (915) (16,709)  
Retirement of units (4,475)   $ (4,475)  
Retirement of units, shares     (489)  
Ending Balance at Jun. 30, 2023 288,809 $ (4,103) $ 307,199 (14,287)
Ending Balance, Unit at Jun. 30, 2023   326 35,603  
Beginning Balance at Mar. 31, 2023 318,175 $ (3,553) $ 336,674 (14,946)
Beginning Balance, unit at Mar. 31, 2023   326 35,603  
Net Income (Loss) (23,906) $ (216) $ (23,690)  
Unrealized gain on pension plan obligation 382     382
Tax effect of unrealized gain on pension plan obligation (104)     (104)
Unrealized gain (loss) on captive insurance collateral (50)     (50)
Tax effect of unrealized gain (loss) on captive insurance collateral 11     11
Unrealized gain (loss) on interest rate hedges 571     571
Tax effect of unrealized gain (loss) on interest rate hedges (151)     (151)
Distributions (6,119) (334) (5,785)  
Ending Balance at Jun. 30, 2023 $ 288,809 $ (4,103) $ 307,199 $ (14,287)
Ending Balance, Unit at Jun. 30, 2023   326 35,603