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Shareholders' Equity and Share-Based Compensation (Tables) | 12 Months Ended
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May. 02, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Nonvested Restricted Stock and Restricted Stock Units Activity | A summary of nonvested restricted stock and restricted stock units for the years ended May 2, 2015, April 26, 2014 and April 27, 2013 is as follows:
| Year Ended
| May 2, 2015 |  | April 26, 2014 |  | April 27, 2013
| Number of Nonvested Shares |  | Weighted Average Grant Date Fair Value Per Share |  | Number of Nonvested Shares |  | Weighted Average Grant Date Fair Value Per Share |  | Number of Nonvested Shares |  | Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year | 318 |  |  | $ | 9.59 |  |  | 279 |  |  | $ | 9.74 |  |  | 242 |  |  | $ | 9.81 |
Granted | 150 |  |  | 12.25 |  |  | 147 |  |  | 10.03 |  |  | 119 |  |  | 8.50 |
Vested | (111 | ) |  | 9.83 |  |  | (85 | ) |  | 9.47 |  |  | (69 | ) |  | 12.05 |
Forfeited | (13 | ) |  | 10.70 |  |  | (23 | ) |  | 9.37 |  |  | (13 | ) |  | 9.63 |
Outstanding at end of year | 344 |  |  | 10.63 |  |  | 318 |  |  | 9.59 |  |  | 279 |  |  | 9.74 |
Schedule of Stock Option Award Activity | A summary of stock option activity under all stock option plans during the fiscal year ended May 2, 2015 is as follows:
| Stock Options |  | Weighted Average Exercise Price Per Share |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value
Outstanding at April 26, 2014 | 2,935 |  |  | $ | 13.77 |  |  | 5.00 |  |  | $ | 6,333 |
Granted | 205 |  |  | 13.31 |  |  | — |  |  | — |
Canceled or forfeited | (167 | ) |  | 14.57 |  |  | — |  |  | — |
Exercised | (232 | ) |  | 10.84 |  |  | — |  |  | 533 |
Outstanding at May 2, 2015 | 2,741 |  |  | $ | 13.94 |  |  | 4.63 |  |  | $ | 2,258 |
Shares vested and expected to vest | 2,714 |  |  | $ | 13.96 |  |  | 4.60 |  |  | $ | 2,244 |
Exercisable at May 2, 2015 | 2,018 |  |  | $ | 14.96 |  |  | 3.54 |  |  | $ | 1,802 |
Schedule of Weighted-Average Assumptions | The following table provides the weighted-average fair value of options granted and the related assumptions used in the Black-Scholes model:
| Year Ended
| May 2, 2015 |  | April 26, 2014 |  | April 27, 2013
Fair value of options granted | $ | 5.44 |  |  | $ | 4.91 |  |  | $ | 3.43 |
Risk-free interest rate | 1.93 - 2.14% |  |  | 2.03 - 2.34% |  |  | 0.71 - 1.13% |
Expected dividend rate | 2.60 | % |  | 2.32% |  |  | 2.43% |
Expected volatility | 48.01 - 51.89% |  |  | 54.09 - 54.37% |  |  | 45.60 - 46.15% |
Expected life of option | 5.84 - 6.95 years |  |  | 5.9 - 6.9 years |  |  | 5.9 - 6.8 years |
Schedule of Share-Based Compensation Expense by Award Type | The following table presents a summary of the share-based compensation expense by equity type as follows:
| Year Ended
| May 2, 2015 |  | April 26, 2014 |  | April 27, 2013
Stock options | $ | 1,311 |  |  | $ | 1,451 |  |  | $ | 1,812 |
Restricted stock and stock units | 1,234 |  |  | 1,000 |  |  | 765 |
Employee stock purchase plans | 493 |  |  | 446 |  |  | 460 |
| $ | 3,038 |  |  | $ | 2,897 |  |  | $ | 3,037 |
Schedule of Share-Based Compensation Expense | A summary of the share-based compensation expenses for stock options, restricted stock, restricted stock units and shares issued under the ESPP for the fiscal years ended May 2, 2015, April 26, 2014 and April 27, 2013 is as follows:
| Year Ended
| May 2, 2015 |  | April 26, 2014 |  | April 27, 2013
Cost of goods sold | $ | 737 |  |  | $ | 657 |  |  | $ | 633 |
Selling | 825 |  |  | 810 |  |  | 856 |
General and administrative | 908 |  |  | 859 |  |  | 980 |
Product design and development | 568 |  |  | 571 |  |  | 568 |
| $ | 3,038 |  |  | $ | 2,897 |  |  | $ | 3,037 |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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