XML 37 R17.htm IDEA: XBRL DOCUMENT
v3.8.0.1

EMPLOYEE BENEFIT PLANS | 3 Months Ended
--- | ---
Dec. 31, 2017
Retirement Benefits [Abstract] |
EMPLOYEE BENEFIT PLANS | 10. EMPLOYEE BENEFIT PLANS Pension and Other Postemployment Benefit Plans The components of the net periodic cost for pension benefits, including the Company's Pension Equalization Plan, and OPEB costs (principally health care and life insurance) for employees and covered dependents were as follows:
| Pension | OPEB
| Three Months Ended | Three Months Ended
| December 31, | December 31,
(Thousands) | 2017 | 2016 | 2017 | 2016
Service cost | $ | 2,035 |  | $ | 2,087 |  | $ | 1,152 |  | $ | 1,095 |
Interest cost | 2,623 |  | 2,443 |  | 1,591 |  | 1,386 |
Expected return on plan assets | (4,910 | ) | (4,828 | ) | (1,338 | ) | (1,192 | )
Recognized actuarial loss | 1,884 |  | 2,207 |  | 1,165 |  | 1,093 |
Prior service cost amortization | 27 |  | 27 |  | (91 | ) | (91 | )
Net periodic benefit cost | $ | 1,659 |  | $ | 1,936 |  | $ | 2,479 |  | $ | 2,291 |
The Company does not expect to be required to make additional contributions to fund the pension plans during fiscal 2018 or 2019 based on current actuarial assumptions; however, funding requirements are uncertain and can depend significantly on changes in actuarial assumptions, returns on plan assets and changes in the demographics of eligible employees and covered dependents. In addition, as in the past, the Company may elect to make contributions in excess of the minimum required amount to the plans. There were no discretionary contributions made during the three months ended December 31, 2017.

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration