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Employee Pension Plans - Reconciliation of Changes in Projected Benefit Obligation and Fair Value of Plan Assets and Funded Status of Defined-benefit Plans (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
May 31, 2023 | May 31, 2022 | May 31, 2021
Change in benefit obligation |  |  |
Interest cost | $ 4,393 | $ 2,621 | $ 1,205
Change in plan assets |  |  |
Return on plan assets | 5,092 | 4,473 | 4,289
Pension Benefit |  |  |
Change in benefit obligation |  |  |
Benefit obligation, beginning of year | 113,567 | 41,195 |
Interest cost | 4,391 | 2,621 |
Actuarial gain | (5,420) | (24,755) |
Benefits paid | (6,662) | (4,511) |
Settlements | (9,446) | (2,929) |
Benefit obligations acquired |  | 101,946 |
Benefits obligation, end of year | 96,430 | 113,567 | 41,195
Change in plan assets |  |  |
Fair value, beginning of year | 83,393 | 33,136 |
Return on plan assets | (1,137) | (11,379) |
Company contributions | 6,837 | 2,308 |
Benefits paid | (6,662) | (4,511) |
Settlements | (9,446) | (2,929) |
Plan assets acquired |  | 66,768 |
Fair value, end of year | 72,985 | 83,393 | $ 33,136
Funded status | (23,445) | (30,174) |
Amounts recognized in our consolidated balance sheets consist of: |  |  |
Amounts recognized in our consolidated balance sheets | 2,580 | 6,736 |
Amounts recognized in AOCI consist of: |  |  |
Net loss (income) | 2,580 | 6,736 |
Total | 2,580 | 6,736 |
Other Benefits |  |  |
Change in benefit obligation |  |  |
Benefit obligation, beginning of year | 4,077 |  |
Service cost | 18 | 15 |
Interest cost | 168 | 70 |
Plan amendments | (441) |  |
Actuarial gain | (281) | (873) |
Benefits paid | (174) | (125) |
Participant contributions |  | 8 |
Benefit obligations acquired |  | 4,982 |
Benefits obligation, end of year | 3,367 | 4,077 |
Change in plan assets |  |  |
Company contributions | 174 | 117 |
Benefits paid | (174) | (125) |
Participant contributions |  | 8 |
Funded status | (3,367) | (4,077) |
Amounts recognized in our consolidated balance sheets consist of: |  |  |
Amounts recognized in our consolidated balance sheets | 1,544 | (873) |
Amounts recognized in AOCI consist of: |  |  |
Net loss (income) | (1,103) | (873) |
Net prior service (credit)/cost | (441) |  |
Total | 1,544 | (873) |
Other Liabilities | Pension Benefit |  |  |
Amounts recognized in our consolidated balance sheets consist of: |  |  |
Amounts recognized in our consolidated balance sheets | (23,445) | (30,174) |
Amounts recognized in AOCI consist of: |  |  |
Total | (23,445) | (30,174) |
Other Liabilities | Other Benefits |  |  |
Amounts recognized in our consolidated balance sheets consist of: |  |  |
Amounts recognized in our consolidated balance sheets | (3,367) | (4,077) |
Amounts recognized in AOCI consist of: |  |  |
Total | (3,367) | (4,077) |
AOCI | Pension Benefit |  |  |
Amounts recognized in our consolidated balance sheets consist of: |  |  |
Amounts recognized in our consolidated balance sheets | 2,580 | 6,736 |
Amounts recognized in AOCI consist of: |  |  |
Total | 2,580 | 6,736 |
AOCI | Other Benefits |  |  |
Amounts recognized in our consolidated balance sheets consist of: |  |  |
Amounts recognized in our consolidated balance sheets | (1,544) | (873) |
Amounts recognized in AOCI consist of: |  |  |
Total | $ (1,544) | $ (873) |

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- Definition Amount, after tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Amount, after tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580 + Details
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- Definition Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(5) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 + Details
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- Definition Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(8) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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