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Earnings Per Share EPS - Reconciliation of Income (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 28, 2017	Jan. 30, 2016
Net income
Basic earnings per share	$ (5,127)	$ (1,953)	$ 9,433	$ 4,991
Dilution associated with stock compensation plans	0	0	0	0
Diluted earnings per share	$ (5,127)	$ (1,953)	$ 9,433	$ 4,991
Shares
Basic earnings per share (in shares)	44,102	44,021	44,071	43,933
Dilution associated with stock compensation plans (in shares)	0	0	135	424
Diluted earnings per share (in shares)	44,102	44,021	44,206	44,357
Per share income
Basic earnings per share (in dollars per share)	$ (0.12)	$ (0.04)	$ 0.21	$ 0.11
Dilution associated with stock compensation plans (in dollars per share)	0.00	0.00	0.00	0.00
Diluted earnings per share (in dollars per share)	$ (0.12)	$ (0.04)	$ 0.21	$ 0.11

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Incremental Common Shares Attributable to Share-based Payment Arrangements, Per Share Amount

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Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of stock options or restrictive stock units (RSUs).

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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