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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2015 | Jan. 25, 2014 | Jan. 31, 2015 | Jan. 25, 2014
Income Statement [Abstract] |  |  |  |
Net sales | $ 118,123 us-gaap_SalesRevenueNet | $ 115,369 us-gaap_SalesRevenueNet | $ 457,856 us-gaap_SalesRevenueNet | $ 415,730 us-gaap_SalesRevenueNet
Cost of goods sold | 93,061 us-gaap_CostOfRevenue | 86,280 us-gaap_CostOfRevenue | 348,514 us-gaap_CostOfRevenue | 307,774 us-gaap_CostOfRevenue
Gross profit | 25,062 us-gaap_GrossProfit | 29,089 us-gaap_GrossProfit | 109,342 us-gaap_GrossProfit | 107,956 us-gaap_GrossProfit
Operating expenses: |  |  |  |
Selling expense | 13,694 us-gaap_SellingExpense | 13,188 us-gaap_SellingExpense | 43,405 us-gaap_SellingExpense | 40,110 us-gaap_SellingExpense
General and administrative | 7,133 us-gaap_GeneralAndAdministrativeExpense | 6,685 us-gaap_GeneralAndAdministrativeExpense | 22,890 us-gaap_GeneralAndAdministrativeExpense | 20,788 us-gaap_GeneralAndAdministrativeExpense
Product design and development | 5,820 us-gaap_ResearchAndDevelopmentExpense | 5,649 us-gaap_ResearchAndDevelopmentExpense | 18,773 us-gaap_ResearchAndDevelopmentExpense | 17,330 us-gaap_ResearchAndDevelopmentExpense
Total operating expenses | 26,647 us-gaap_OperatingExpenses | 25,522 us-gaap_OperatingExpenses | 85,068 us-gaap_OperatingExpenses | 78,228 us-gaap_OperatingExpenses
Operating (loss) income | (1,585)us-gaap_OperatingIncomeLoss | 3,567 us-gaap_OperatingIncomeLoss | 24,274 us-gaap_OperatingIncomeLoss | 29,728 us-gaap_OperatingIncomeLoss
Nonoperating income (expense): |  |  |  |
Interest income | 250 us-gaap_InvestmentIncomeNet | 290 us-gaap_InvestmentIncomeNet | 825 us-gaap_InvestmentIncomeNet | 945 us-gaap_InvestmentIncomeNet
Interest expense | (59)us-gaap_InterestExpense | (62)us-gaap_InterestExpense | (183)us-gaap_InterestExpense | (189)us-gaap_InterestExpense
Other income (expense), net | 179 us-gaap_OtherNonoperatingIncomeExpense | (237)us-gaap_OtherNonoperatingIncomeExpense | (218)us-gaap_OtherNonoperatingIncomeExpense | (351)us-gaap_OtherNonoperatingIncomeExpense
(Loss) income before income taxes | (1,215)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 3,558 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 24,698 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 30,133 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income tax (benefit) expense | (1,776)us-gaap_IncomeTaxExpenseBenefit | 687 us-gaap_IncomeTaxExpenseBenefit | 7,655 us-gaap_IncomeTaxExpenseBenefit | 9,753 us-gaap_IncomeTaxExpenseBenefit
Net income | $ 561 us-gaap_NetIncomeLoss | $ 2,871 us-gaap_NetIncomeLoss | $ 17,043 us-gaap_NetIncomeLoss | $ 20,380 us-gaap_NetIncomeLoss
Weighted average shares outstanding: |  |  |  |
Basic (in shares) | 43,612 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 43,039 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 43,435 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 42,772 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted (in shares) | 43,991 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 43,613 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 44,204 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 43,397 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Earnings per share: |  |  |  |
Basic (in dollars per share) | $ 0.01 us-gaap_EarningsPerShareBasic | $ 0.07 us-gaap_EarningsPerShareBasic | $ 0.39 us-gaap_EarningsPerShareBasic | $ 0.48 us-gaap_EarningsPerShareBasic
Diluted (in dollars per share) | $ 0.01 us-gaap_EarningsPerShareDiluted | $ 0.07 us-gaap_EarningsPerShareDiluted | $ 0.39 us-gaap_EarningsPerShareDiluted | $ 0.47 us-gaap_EarningsPerShareDiluted
Cash dividend declared per share (in dollars per share) | $ 0.100 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.090 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.300 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.300 us-gaap_CommonStockDividendsPerShareDeclared

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