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Shareholders' Equity and Share-Based Compensation (Tables) | 12 Months Ended
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Apr. 29, 2017
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 fiscal years 2017, 2016, and 2015 is as follows:
| Year Ended
| April 29, 2017 |  | April 30, 2016 |  | May 2, 2015
| 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 | 384 |  |  | $ | 9.10 |  |  | 344 |  |  | $ | 10.63 |  |  | 318 |  |  | $ | 9.59 |
Granted | 157 |  |  | 8.00 |  |  | 159 |  |  | 7.04 |  |  | 150 |  |  | 12.25 |
Vested | (134 | ) |  | 9.03 |  |  | (110 | ) |  | 10.76 |  |  | (111 | ) |  | 9.83 |
Forfeited | (5 | ) |  | 8.98 |  |  | (9 | ) |  | 10.69 |  |  | (13 | ) |  | 10.70 |
Outstanding at end of year | 402 |  |  | $ | 8.69 |  |  | 384 |  |  | $ | 9.10 |  |  | 344 |  |  | $ | 10.63 |
Schedule of Stock Option Award Activity | A summary of stock option activity under all stock option plans during the fiscal year ended April 29, 2017 is as follows:
| Stock Options |  | Weighted Average Exercise Price Per Share |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value
Outstanding at April 30, 2016 | 2,606 |  |  | $ | 13.50 |  |  | 4.57 |  |  | $ | 158 |
Granted | 234 |  |  | 9.57 |  |  | — |  |  | — |
Canceled or forfeited | (320 | ) |  | 29.41 |  |  | — |  |  | — |
Exercised | (39 | ) |  | 8.78 |  |  | — |  |  | 64 |
Outstanding at April 29, 2017 | 2,481 |  |  | $ | 11.15 |  |  | 4.53 |  |  | $ | 768 |
Shares vested and expected to vest | 2,458 |  |  | $ | 11.16 |  |  | 4.50 |  |  | $ | 762 |
Exercisable at April 29, 2017 | 1,868 |  |  | $ | 11.49 |  |  | 3.49 |  |  | $ | 635 |
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
| April 29, 2017 |  | April 30, 2016 |  | May 2, 2015
Fair value of options granted | $ | 2.93 |  |  | $ | 2.92 |  |  | $ | 5.44 |
Risk-free interest rate | 1.31 - 1.44% |  |  | 1.70 - 1.90% |  |  | 1.93 - 2.14% |
Expected dividend rate | 3.15 | % |  | 2.78 | % |  | 2.60 | %
Expected volatility | 44.12 - 44.51% |  |  | 42.71 - 48.32% |  |  | 48.01 - 51.89% |
Expected life of option | 5.78 - 6.98 years |  |  | 5.78 - 6.98 years |  |  | 5.84 - 6.95 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
| April 29, 2017 |  | April 30, 2016 |  | May 2, 2015
Stock options | $ | 1,072 |  |  | $ | 1,179 |  |  | $ | 1,311 |
Restricted stock and stock units | 1,287 |  |  | 1,237 |  |  | 1,234 |
Employee stock purchase plans | 555 |  |  | 542 |  |  | 493 |
| $ | 2,914 |  |  | $ | 2,958 |  |  | $ | 3,038 |
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 fiscal years 2017, 2016, and 2015 is as follows:
| Year Ended
| April 29, 2017 |  | April 30, 2016 |  | May 2, 2015
Cost of goods sold | $ | 714 |  |  | $ | 751 |  |  | $ | 737 |
Selling | 723 |  |  | 780 |  |  | 825 |
General and administrative | 877 |  |  | 839 |  |  | 908 |
Product design and development | 600 |  |  | 588 |  |  | 568 |
| $ | 2,914 |  |  | $ | 2,958 |  |  | $ | 3,038 |

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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 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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