STOCK-BASED COMPENSATION - Restricted Stock Unit and Performance-based Restricted Stock Unit (Details) $ / shares in Units, $ in Millions	12 Months Ended
May 28, 2017 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years
Aggregate fair value of awards vested \| $	$ 0.7
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award actual earning rate	220.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award actual earning rate	0.00%
Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Non-employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Stock-settled restricted stock units
Shares
Outstanding at beginning of the period (in shares)	0
Converted (in shares)	459,466
Granted (in shares)	86,642
Vested (in shares)	17,753
Forfeited/expired/cancelled (in shares)	38,751
Outstanding at end of the period (in shares)	489,604
Weighted-Average Grant-Date Fair Value
Converted (in shares) \| $ / shares	$ 25.05
Granted (in dollars per share) \| $ / shares	33.96
Vested (in dollars per share) \| $ / shares	18.68
Forfeited/expired/cancelled (in dollars per share) \| $ / shares	24.24
Outstanding at end of the period (in dollars per share) \| $ / shares	$ 26.92
Cash-settled restricted stock units
Shares
Outstanding at beginning of the period (in shares)	0
Converted (in shares)	469,837
Vested (in shares)	1,503
Forfeited/expired/cancelled (in shares)	5,722
Outstanding at end of the period (in shares)	462,612
Weighted-Average Grant-Date Fair Value
Converted (in shares) \| $ / shares	$ 25.33
Vested (in dollars per share) \| $ / shares	23.70
Forfeited/expired/cancelled (in dollars per share) \| $ / shares	26.73
Outstanding at end of the period (in dollars per share) \| $ / shares	$ 25.33
Performance Units
Shares
Outstanding at beginning of the period (in shares)	0
Converted (in shares)	56,050
Granted (in shares)	1,640
Outstanding at end of the period (in shares)	57,690
Weighted-Average Grant-Date Fair Value
Converted (in shares) \| $ / shares	$ 25.84
Granted (in dollars per share) \| $ / shares	25.84
Outstanding at end of the period (in dollars per share) \| $ / shares	$ 25.84

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- Definition

Gross number of share other than options (or share units) granted as a result of conversion and employee transitions during the period (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

No definition available.

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans granted as a result of conversion and employee transitions (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Subparagraph (c)(2)(iii)(2)
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- Definition

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.

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