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Shareholders' Equity and Share-Based Compensation (Tables) | 12 Months Ended
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Apr. 27, 2019
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 2019, 2018, and 2017 is as follows:
| Year Ended
| April 27, 2019 |  | April 28, 2018 |  | April 29, 2017
| 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 | 437 |  |  | $ | 8.48 |  |  | 402 |  |  | $ | 8.69 |  |  | 384 |  |  | $ | 9.10 |
Granted | 181 |  |  | 6.79 |  |  | 178 |  |  | 8.46 |  |  | 157 |  |  | 8.00 |
Vested | (169 | ) |  | 9.05 |  |  | (141 | ) |  | 9.06 |  |  | (134 | ) |  | 9.03 |
Forfeited | (5 | ) |  | 7.74 |  |  | (2 | ) |  | 8.93 |  |  | (5 | ) |  | 8.98 |
Outstanding at end of year | 444 |  |  | $ | 7.58 |  |  | 437 |  |  | $ | 8.48 |  |  | 402 |  |  | $ | 8.69 |
Schedule of Stock Option Award Activity | A summary of stock option activity under our 2007 Plan and 2015 Plan during the fiscal year ended April 27, 2019 is as follows:
| Stock Options |  | Weighted Average Exercise Price Per Share |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value
Outstanding at April 28, 2018 | 2,305 |  |  | $ | 10.02 |  |  | 4.51 |  |  | $ | 356 |
Granted | 175 |  |  | 7.83 |  |  | — |  |  | — |
Canceled or forfeited | (119 | ) |  | 8.88 |  |  | — |  |  | — |
Exercised | (159 | ) |  | 8.31 |  |  | — |  |  | 98 |
Outstanding at April 27, 2019 | 2,202 |  |  | $ | 10.03 |  |  | 4.41 |  |  | $ | — |
Shares vested and expected to vest | 2,179 |  |  | $ | 10.05 |  |  | 4.37 |  |  | $ | — |
Exercisable at April 27, 2019 | 1,684 |  |  | $ | 10.32 |  |  | 3.30 |  |  | $ | — |
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 27, 2019 |  | April 28, 2018 |  | April 29, 2017
Fair value of options granted | $ | 2.16 |  |  | $ | 2.82 |  |  | $ | 2.93 |
Risk-free interest rate | 2.83 | % |  | 1.95 | % |  | 1.31 - 1.44% |
Expected dividend rate | 3.37 | % |  | 3.27 | % |  | 3.15 | %
Expected volatility | 38.58 | % |  | 42.51 | % |  | 44.12 - 44.51% |
Expected life of option | 6.83 years |  |  | 6.83 years |  |  | 5.78 - 6.98 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 27, 2019 |  | April 28, 2018 |  | April 29, 2017
Stock options | $ | 593 |  |  | $ | 763 |  |  | $ | 1,072 |
Restricted stock and stock units | 1,446 |  |  | 1,442 |  |  | 1,287 |
Employee stock purchase plans | 440 |  |  | 430 |  |  | 555 |
| $ | 2,479 |  |  | $ | 2,635 |  |  | $ | 2,914 |
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 2019, 2018, and 2017 is as follows:
| Year Ended
| April 27, 2019 |  | April 28, 2018 |  | April 29, 2017
Cost of sales | $ | 578 |  |  | $ | 619 |  |  | $ | 714 |
Selling | 625 |  |  | 644 |  |  | 723 |
General and administrative | 772 |  |  | 851 |  |  | 877 |
Product design and development | 504 |  |  | 521 |  |  | 600 |
| $ | 2,479 |  |  | $ | 2,635 |  |  | $ | 2,914 |

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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=109197908&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=109197908&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=109197908&loc=d3e5070-113901 + Details
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