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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Amount of contributions expected to be received by defined benefit plan from employer in fiscal year. Excludes contributions paid by employer in current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2709-114920

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

+ References

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Employee Benefit Plans - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended
	May 31, 2018	Mar. 31, 2018	Mar. 31, 2017
President, and Chief Executive Officer [Member] \| Scenario, Forecast \| Supplemental Executive Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Settlement of distribution	$ 8,900,000
Settlement loss	$ 200,000
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, employer contributions		$ 0	$ 0
Expected contribution to the plan during the remaining quarters of fiscal 2018		0
Supplemental Executive Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to the plan during the remaining quarters of fiscal 2018		100,000
Norway’s Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to the plan during the remaining quarters of fiscal 2018		$ 0	$ 0