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Shareholders' Equity and Share-Based Compensation (Tables)
 12 Months Ended
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