Note 7 - Reconciliation of Income Tax Rate (Details)	12 Months Ended
May. 02, 2015	May. 03, 2014	Apr. 27, 2013
Statutory federal income tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	2.30%	2.30%	1.60%
Manufacturing deduction benefit	(3.00%)	(3.00%)	(3.10%)
Adjustment of unrecognized tax benefit	(0.20%)	(3.30%)	(0.20%)
Other differences	(0.10%)	(0.10%)	0.10%
Effective income tax rate	34.00%	30.90%	33.40%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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