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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4587-114921

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Amount of cost for defined contribution plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

No definition available.

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Percentage employer matches of the employee's percentage contribution matched.

No definition available.

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Amount of contribution received by multiemployer pension plan from all employers participating in multiemployer pension plan determined to be individually significant.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 7
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450678-114947

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948

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Amount of the obligation recognized by withdrawing from a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

No definition available.

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Defined benefit funded pension plan estimated future employer contributions in current fiscal year.

No definition available.

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Defined benefit funded plan actuarial gain loss before tax.

No definition available.

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Defined benefit funded plan actuarial gain loss net of tax.

No definition available.

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Defined benefit unfunded pension plan estimated future employer contributions in current fiscal year.

No definition available.

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Defined benefit unfunded plan actuarial gain loss before tax.

No definition available.

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Defined benefit unfunded plan actuarial gain loss net of tax.

No definition available.

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Defined contribution plan employer matching contribution percent match with hundred percent.

No definition available.

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Defined contribution plan employer matching contribution percent of match with fifty percent.

No definition available.

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Maximum percentage of funding status of plan in red zone.

No definition available.

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Maximum percentage of funding status of plan in yellow zone.

No definition available.

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Minimum percentage of funding status of plan in green zone.

No definition available.

Name:	vvi_MinimumPercentageOfFundingStatusOfPlanInGreenZone
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Data Type:	num:percentItemType
Balance Type:	na
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