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Shareholders' Equity and Share-Based Compensation (Tables) | 12 Months Ended
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May 02, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of Nonvested Restricted Stock and Restricted Stock Units Activity | A summary of nonvested restricted stock and restricted stock units for fiscal years 2020, 2019, and 2018 is as follows:
| Year Ended
| May 2, 2020 |  | April 27, 2019 |  | April 28, 2018
| 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 | 444 |  |  | $ | 7.58 |  |  | 437 |  |  | $ | 8.48 |  |  | 402 |  |  | $ | 8.69 |
Granted | 186 |  |  | 7.03 |  |  | 181 |  |  | 6.79 |  |  | 178 |  |  | 8.46 |
Vested | (173 | ) |  | 8.10 |  |  | (169 | ) |  | 9.05 |  |  | (141 | ) |  | 9.06 |
Forfeited | (8 | ) |  | 7.37 |  |  | (5 | ) |  | 7.74 |  |  | (2 | ) |  | 8.93 |
Outstanding at end of year | 449 |  |  | $ | 7.16 |  |  | 444 |  |  | $ | 7.58 |  |  | 437 |  |  | $ | 8.48 |
Schedule of Stock Option Award Activity | A summary of stock option activity under our 2007 Plan and 2015 Plan during the fiscal year ended May 2, 2020 is as follows:
| Stock Options |  | Weighted Average Exercise Price Per Share |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value
Outstanding at April 27, 2019 | 2,202 |  |  | $ | 10.03 |  |  | 4.41 |  |  | $ | — |
Granted | 182 |  |  | 7.47 |  |  | — |  |  | — |
Canceled or forfeited | (263 | ) |  | 8.85 |  |  | — |  |  | — |
Exercised | — |  |  | — |  |  | — |  |  | — |
Outstanding at May 2, 2020 | 2,121 |  |  | $ | 9.96 |  |  | 4.38 |  |  | $ | — |
Shares vested and expected to vest | 2,098 |  |  | $ | 9.98 |  |  | 4.34 |  |  | $ | — |
Exercisable at May 2, 2020 | 1,593 |  |  | $ | 10.50 |  |  | 3.17 |  |  | $ | — |
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, 2020 |  | April 27, 2019 |  | April 28, 2018
Fair value of options granted | $ | 1.99 |  |  | $ | 2.16 |  |  | $ | 2.82 |
Risk-free interest rate | 1.51 | % |  | 2.83 | % |  | 1.95 | %
Expected dividend rate | 3.50 | % |  | 3.37 | % |  | 3.27 | %
Expected volatility | 37.55 | % |  | 38.58 | % |  | 42.51 | %
Expected life of option | 6.94 years |  |  | 6.83 years |  |  | 6.83 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, 2020 |  | April 27, 2019 |  | April 28, 2018
Stock options | $ | 492 |  |  | $ | 593 |  |  | $ | 763 |
Restricted stock and stock units | 1,341 |  |  | 1,446 |  |  | 1,442 |
Employee stock purchase plans | 432 |  |  | 440 |  |  | 430 |
| $ | 2,265 |  |  | $ | 2,479 |  |  | $ | 2,635 |
Schedule of Share-Based Compensation Expense | A summary of the share-based compensation expense for stock options, restricted stock, restricted stock units and shares issued under the ESPP for fiscal years 2020, 2019, and 2018 is as follows:
| Year Ended
| May 2, 2020 |  | April 27, 2019 |  | April 28, 2018
Cost of sales | $ | 514 |  |  | $ | 578 |  |  | $ | 619 |
Selling | 572 |  |  | 625 |  |  | 644 |
General and administrative | 717 |  |  | 772 |  |  | 851 |
Product design and development | 462 |  |  | 504 |  |  | 521 |
| $ | 2,265 |  |  | $ | 2,479 |  |  | $ | 2,635 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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