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Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	May 26, 2019	Feb. 24, 2019	Nov. 25, 2018	Aug. 26, 2018	May 27, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 26, 2019	May 27, 2018	May 28, 2017
Numerator:
Net income applicable to common stockholders	$ (262)	$ 1,067	$ (584)	$ 190	$ 6,108	$ 16,088	$ 487	$ 2,146	$ 411	$ 24,829	$ 10,590
Denominator:
Weighted average shares for basic net income per share (in shares)									28,359	27,535	27,276
Effect of dilutive securities:
Stock options and restricted stock units (in shares)									248	380	376
Weighted average shares for diluted net income (loss) per share (in shares)									28,607	27,915	27,652
Diluted net income per share (in dollars per share)									$ 0.01	$ 0.89	$ 0.38

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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