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EMPLOYEE BENEFIT PLANS - Pension (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
EMPLOYEE BENEFIT PLANS |  |  |
Accumulated Benefit Obligation | $ 109,976 | $ 109,731 |
Changes in projected benefit obligations |  |  |
Projected benefit obligation at beginning of year | 109,731 | 107,417 |
Interest cost | 4,053 | 4,266 | $ 4,584
Actuarial loss | 3,633 | 15,051 |
Benefits paid | (7,441) | (17,003) |
Projected benefit obligation at end of year | 109,976 | 109,731 | 107,417
Change in plan assets |  |  |
Fair value of plan assets at beginning of year | 90,748 | 98,060 |
Actual return on plan assets | 9,470 | 9,653 |
Employer contribution | 39 | 38 |
Benefits paid | (7,441) | (17,003) |
Fair value of plan assets at end of year | 92,816 | 90,748 | $ 98,060
Funded status of the plan at end of year | (17,160) | (18,983) |
Amounts Recognized in the Consolidated Balance Sheets |  |  |
Accrued liabilities | (45) | (45) |
Noncurrent liabilities-other | (17,115) | (18,938) |
Net amount recognized | (17,160) | (18,983) |
Amounts recognized in accumulated other comprehensive income and not yet reflected in net periodic benefit cost |  |  |
Net actuarial loss | (28,873) | $ (34,112) |
Net actuarial loss, which is expected to be amortized in next year's periodic benefit cost | $ 1,800 |  |
Weighted average assumptions used for the pension calculations |  |  |
Discount rate for net periodic benefit costs (as a percent) | 3.64% | 4.27% | 4.32%
Discount rate for year-end obligations (as a percent) | 3.79% | 3.64% | 4.27%
Expected return on plan assets (as a percent) | 6.17% | 5.89% | 6.26%
Components of the net periodic pension expense (benefit) |  |  |
Interest cost | $ 4,053 | $ 4,266 | $ 4,584
Expected return on plan assets | (5,130) | (5,616) | (6,855)
Recognized net actuarial loss | 2,891 | 2,083 | 1,308
Pension settlement charges | 1,640 | 4,964 | 2,873
Net pension expense | 3,454 | $ 5,697 | $ 1,910
Expected benefits to be paid from the Pension Plan |  |  |
2018 | 16,050 |  |
2019 | 6,844 |  |
2020 | 7,222 |  |
2021 | 5,591 |  |
2022 | 6,383 |  |
2023-2027 | 32,723 |  |
Total | $ 74,813 |  |
Target Allocation (as a percent) | 100.00% |  |
Percentage of Plan Assets | 100.00% | 100.00% |
U.S. equities |  |  |
Expected benefits to be paid from the Pension Plan |  |  |
Target Allocation (as a percent) | 45.00% |  |
Percentage of Plan Assets | 50.00% | 62.00% |
International equities |  |  |
Expected benefits to be paid from the Pension Plan |  |  |
Target Allocation (as a percent) | 20.00% |  |
Percentage of Plan Assets | 16.00% | 12.00% |
Fixed income |  |  |
Expected benefits to be paid from the Pension Plan |  |  |
Target Allocation (as a percent) | 35.00% |  |
Percentage of Plan Assets | 34.00% | 21.00% |
Real estate and other |  |  |
Expected benefits to be paid from the Pension Plan |  |  |
Percentage of Plan Assets |  | 5.00% |

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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