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Shareholders' Equity (Tables)
 12 Months Ended
May 03, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Stock by Class
The number of shares of common stock, par value $0.50 per share, authorized, issued and outstanding and in treasury, was as follows:
 
 
May 3, 2014
 
April 27, 2013
Authorized
100,000,000

 
100,000,000

Issued and outstanding
39,262,168

 
38,455,853

In treasury
1,342,188

 
1,342,188
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan
The table below summarizes the expense related to the equity awards for fiscal 2014, 2013 and 2012.

 
Compensation Expense
 
Fiscal 2014
 
Fiscal 2013
 
Fiscal 2012
2010 Stock Plan:
 
 
 
 
 
RSAs
$
1.5

 
$
1.5

 
$
1.4

RSUs
0.3

 
0.5

 
0.9

Stock options
0.8

 
0.5

 
0.6

Total 2010 Stock Plan
$
2.6

 
$
2.5

 
$
2.9

 
 
 
 
 
 
2007 Stock Plan:
 
 
 
 
 
RSAs
$
0.4

 
$
0.2

 
$
0.3

Stock options
0.3

 
0.6

 
0.8

Total 2007 Stock Plan
$
0.7

 
$
0.8

 
$
1.1

 
 
 
 
 
 
Total Compensation Expense
$
3.3

 
$
3.3

 
$
4.0
2010 Stock Plan
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Stock Options, Activity
The following tables summarize the stock option activity and related information for the stock options granted under the 2010 Stock Plan for fiscal 2014, 2013 and 2012:
 
 
Summary of Option Activity
 
 
Shares
 
Wtd. Avg. Exercise Price
Outstanding at April 30, 2011
 
128,000

 
$
9.24

Awarded
 
128,000

 
10.70

Exercised
 
—

 
—

Cancelled
 
(16,000
)
 
9.97

Outstanding at April 28, 2012
 
240,000

 
9.97

Awarded
 
120,000

 
8.64

Exercised
 
—

 
—

Cancelled
 
—

 
—

Outstanding at April 27, 2013
 
360,000

 
9.53

Awarded
 
120,000

 
17.27

Exercised
 
(59,999
)
 
9.50

Cancelled
 
—

 
—

Outstanding at May 3, 2014
 
420,001

 
$
11.74
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range
Options Outstanding
at May 3, 2014
Shares
 
Exercise Price
 
Avg. Remaining Life (Years)
80,000

 
$
9.24

 
6.5
106,667

 
10.70

 
7.3
113,334

 
8.64

 
8.3
120,000

 
17.27

 
9.3
420,001

 
$
11.74

 
 
Options Exercisable
at May 3, 2014
Shares
 
Exercise Price
 
Avg. Remaining Life (Years)
80,000

 
$
9.24

 
6.5
66,667

 
10.70

 
7.3
33,334

 
8.64

 
8.3
180,001

 
$
9.67

 
 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
We estimated the fair value of these stock options on the date of grant using the Black-Scholes option-pricing model with the following assumptions:
 
2010 Stock Plan
 
Fiscal 2014
 
Fiscal 2013
 
Fiscal 2012
 
Awards
 
Awards
 
Awards
Average expected volatility
65.33
%
 
66.15
%
 
52.76
%
Average risk-free interest rate
0.65
%
 
0.39
%
 
0.63
%
Dividend yield
2.81
%
 
2.94
%
 
2.66
%
Expected life of options (in years)
7.61

 
7.18

 
7.03

Weighted-average grant-date fair value
$
8.39

 
$
4.13

 
$
4.27
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
The following table summarizes the RSA and RSU activity for fiscal 2014, 2013 and 2012 under the 2010 Stock Plan:
 
RSA Shares
 
RSU Shares
Unvested and unissued at April 30, 2011
640,000

 
256,000

Awarded
100,000

 
—

Vested
—

 
(60,000
)
Forfeited and Cancelled
(40,000
)
 
(16,000
)
Unvested and unissued at April 28, 2012
700,000

 
180,000

Awarded
—

 
—

Vested
—

 
(60,000
)
Forfeited and Cancelled
—

 
—

Unvested and unissued at April 27, 2013
700,000

 
120,000

Awarded
—

 
—

Vested
—

 
(60,000
)
Forfeited and Cancelled
—

 
—

Unvested and unissued at May 3, 2014
700,000

 
60,000
Schedule Of Share-based Compensation, Restricted Stock And Restricted Stock Units Details, By Grant Year And Vesting Period
 
 
 
 
 
 
Weighted Average Value
 
Probable Unearned Compensation Expense at May 3, 2014
 
Target Unearned Compensation Expense at May 3, 2014
Grant Fiscal Year
 
Number of Shares Granted, less Forfeitures
 
Vesting Period
 
 
 
2011
 
600,000

 
5-year RSA cliff, performance based
 
$
9.70

 
$
1.3

 
$
1.3

2011
 
300,000

 
5-year RSU, equal annual installments
 
9.70

 
0.1

 
N/A

2012
 
100,000

 
One-third per year, beginning in fiscal 2015, performance based
 
8.10

 
0.3

 
0.3
2007 Stock Plan
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Stock Options, Activity
The following tables summarize the stock option activity and related information for the stock options granted under the 2007 Stock Plan as of May 3, 2014:
 
 
Summary of Option Activity
 
Shares
 
Wtd. Avg.
Exercise Price
Outstanding at April 30, 2011
720,500

 
$
5.77

 
 
 
 
Awarded
52,500

 
8.10

Exercised
(10,000
)
 
6.46

Cancelled
(25,000
)
 
9.73

Outstanding at April 28, 2012
738,000

 
$
5.79

 
 
 
 
Awarded
42,500

 
8.64

Exercised
(2,500
)
 
8.10

Cancelled
—

 
—

Outstanding at April 27, 2013
778,000

 
$
5.94

 
 
 
 
Awarded
42,500

 
17.27

Exercised
(648,141
)
 
5.60

Cancelled
—

 
—

Outstanding at May 3, 2014
172,359

 
10.02
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range
Options Outstanding
at May 3, 2014
Shares
 
Exercise Price
 
Avg.
Remaining
Life (Years)
60,690

 
$
6.46

 
5.3
10,000

 
10.55

 
6.3
29,168

 
8.10

 
7.5
30,001

 
8.64

 
8.3
42,500

 
17.27

 
9.3
172,359

 
$
10.02

 
 
 
Options Exercisable
at May 3, 2014 
Shares
 
Exercise Price
 
Avg.
Remaining
Life (Years)
60,690

 
$
6.46

 
5.3
10,000

 
10.55

 
6.3
11,668

 
8.10

 
7.5
1,668

 
8.64

 
8.3
84,026

 
$
7.22

 
 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
We estimated the fair value of these stock options on the date of grant using the Black-Scholes option-pricing model with the following assumptions:
 
Fiscal 2014
Awards
 
Fiscal 2013
Awards
 
Fiscal 2012
Awards
Average expected volatility
65.33
%
 
66.15
%
 
52.76
%
Average risk-free interest rate
0.65
%
 
0.39
%
 
0.63
%
Dividend yield
2.81
%
 
2.94
%
 
2.66
%
Expected life of options
7.61 years

 
7.18 years

 
7.03 years

Weighted-average grant-date fair value
$
8.39

 
$
4.13

 
$
4.27
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
The following table summarizes the RSA activity under the 2007 Stock Plan: 
 
Fiscal 2014
 
Fiscal 2013
 
Fiscal 2012
Unvested at beginning of fiscal year
—

 
—

 
—

Awarded
27,000

 
27,000

 
28,860

Vested
(27,000
)
 
(27,000
)
 
(28,860
)
Forfeited
—

 
—

 
—

Unvested at end of period
—

 
—

 
—
2000 and 2004 Stock Plans
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Stock Options, Activity
The following tables summarize the stock option activity and related information for the stock options granted under the 2000 and 2004 Stock Plans for fiscal 2014, 2013 and 2012:
 
Options Outstanding
 
Exercisable Options
 
Shares
 
Wtd. Avg.
Exercise
Price
 
Shares
 
Wtd. Avg.
Exercise
Price
April 30, 2011
282,767

 
$
10.82

 
282,767

 
$
10.82

 
 
 
 
 
 
 
 
Granted
—

 
—

 
 

 
 

Exercised
(21,975
)
 
9.02

 
 

 
 

Cancelled
(9,427
)
 
11.32

 
 

 
 

April 28, 2012
251,365

 
10.96

 
251,365

 
10.96

 
 
 
 
 
 
 
 
Granted
—

 
—

 
 
 
 
Exercised
(50,675
)
 
11.44

 
 
 
 
Cancelled
(128,105
)
 
10.50

 
 
 
 
April 27, 2013
72,585

 
$
11.44

 
72,585

 
$
11.44

 
 
 
 
 
 
 
 
Granted
—

 
—

 
 
 
 
Exercised
(71,175
)
 
11.44

 
 
 
 
Cancelled
(1,410
)
 
11.44

 
 
 
 
May 3, 2014
—

 
—

 
—

 
—