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v3.21.1

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, 2019 | $ 260,840 | $ (1,968) | $ 279,709 | $ (16,901)
Beginning Balance, unit at Sep. 30, 2019 |  | 326 | 47,685 |
Net income | 86,163 | $ 601 | $ 85,562 |
Unrealized gain on pension plan obligation | 910 |  |  | 910
Tax effect of unrealized gain on pension plan obligation | (258) |  |  | (258)
Unrealized gain (loss) on captive insurance collateral | 43 |  |  | 43
Tax effect of unrealized gain (loss) on captive insurance collateral | (7) |  |  | (7)
Unrealized gain (loss) on interest rate hedges | (1,382) |  |  | (1,382)
Tax effect of unrealized gain (loss) on interest rate hedges | 374 |  |  | 374
Distributions | (12,153) | (425) | (11,728) |
Retirement of units | (18,575) |  | $ (18,575) |
Retirement of units, shares |  |  | (2,063) |
Ending Balance at Mar. 31, 2020 | 315,955 | $ (1,792) | $ 334,968 | (17,221)
Ending Balance, Unit at Mar. 31, 2020 |  | 326 | 45,622 |
Beginning Balance at Dec. 31, 2019 | 270,898 | $ (1,991) | $ 289,268 | (16,379)
Beginning Balance, unit at Dec. 31, 2019 |  | 326 | 46,404 |
Net income | 58,408 | $ 409 | $ 57,999 |
Unrealized gain on pension plan obligation | 455 |  |  | 455
Tax effect of unrealized gain on pension plan obligation | (133) |  |  | (133)
Unrealized gain (loss) on captive insurance collateral | 107 |  |  | 107
Tax effect of unrealized gain (loss) on captive insurance collateral | (15) |  |  | (15)
Unrealized gain (loss) on interest rate hedges | (1,716) |  |  | (1,716)
Tax effect of unrealized gain (loss) on interest rate hedges | 460 |  |  | 460
Distributions | (5,998) | (210) | (5,788) |
Retirement of units | (6,511) |  | $ (6,511) |
Retirement of units, shares |  |  | (782) |
Ending Balance at Mar. 31, 2020 | 315,955 | $ (1,792) | $ 334,968 | (17,221)
Ending Balance, Unit at Mar. 31, 2020 |  | 326 | 45,622 |
Beginning Balance at Sep. 30, 2020 | 255,820 | $ (2,506) | $ 273,283 | (14,957)
Beginning Balance, unit at Sep. 30, 2020 |  | 326 | 43,328 |
Ending Balance at Dec. 31, 2020 | 262,616 | $ (2,447) | $ 279,873 | (14,810)
Ending Balance, Unit at Dec. 31, 2020 |  | 326 | 40,737 |
Beginning Balance at Sep. 30, 2020 | 255,820 | $ (2,506) | $ 273,283 | (14,957)
Beginning Balance, unit at Sep. 30, 2020 |  | 326 | 43,328 |
Net income | 123,024 | $ 977 | $ 122,047 |
Unrealized gain on pension plan obligation | 470 |  |  | 470
Tax effect of unrealized gain on pension plan obligation | (128) |  |  | (128)
Unrealized gain (loss) on captive insurance collateral | (866) |  |  | (866)
Tax effect of unrealized gain (loss) on captive insurance collateral | 182 |  |  | 182
Unrealized gain (loss) on interest rate hedges | 1,051 |  |  | 1,051
Tax effect of unrealized gain (loss) on interest rate hedges | (278) |  |  | (278)
Distributions | (11,533) | (462) | (11,071) |
Retirement of units | (30,466) |  | $ (30,466) |
Retirement of units, shares |  |  | (3,129) |
Ending Balance at Mar. 31, 2021 | 337,276 | $ (1,991) | $ 353,793 | (14,526)
Ending Balance, Unit at Mar. 31, 2021 |  | 326 | 40,199 |
Beginning Balance at Dec. 31, 2020 | 262,616 | $ (2,447) | $ 279,873 | (14,810)
Beginning Balance, unit at Dec. 31, 2020 |  | 326 | 40,737 |
Net income | 85,164 | $ 681 | $ 84,483 |
Unrealized gain on pension plan obligation | 235 |  |  | 235
Tax effect of unrealized gain on pension plan obligation | (64) |  |  | (64)
Unrealized gain (loss) on captive insurance collateral | (526) |  |  | (526)
Tax effect of unrealized gain (loss) on captive insurance collateral | 110 |  |  | 110
Unrealized gain (loss) on interest rate hedges | 719 |  |  | 719
Tax effect of unrealized gain (loss) on interest rate hedges | (190) |  |  | (190)
Distributions | (5,594) | (225) | (5,369) |
Retirement of units | (5,194) |  | $ (5,194) |
Retirement of units, shares |  |  | (538) |
Ending Balance at Mar. 31, 2021 | $ 337,276 | $ (1,991) | $ 353,793 | $ (14,526)
Ending Balance, Unit at Mar. 31, 2021 |  | 326 | 40,199 |

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