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Stock-based Compensation and Stockholders’ Equity - Stock-based Compensation Activity (Details) - Restricted Stock - $ / shares	12 Months Ended
	May 26, 2019	May 27, 2018	May 28, 2017
Restricted Stock Units Outstanding
Beginning balance (in shares)	408,037	509,355	526,841
Granted (in shares)	333,486	200,288	130,522
Vested (in shares)	(237,946)	(270,656)	(130,508)
Forfeited (in shares)	(75,150)	(30,950)	(17,500)
Ending balance (in shares)	428,427	408,037	509,355
Weighted-Average Grant Date Fair Value Per Share
Beginning balance (in dollars per share)	$ 12.99	$ 13.53	$ 13.51
Granted (in dollars per share)	13.15	13.12	13.37
Exercised (in dollars per share)	13.27	14.06	13.42
Forfeited (in dollars per share)	13.92	11.75	12.46
Ending balance (in dollars per share)	$ 12.80	$ 12.99	$ 13.53

X

- 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

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-Publisher FASB
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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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).

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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.

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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.

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Number of non-option equity instruments exercised by participants.

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Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event.

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Net number of non-option equity instruments granted to participants.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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