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Nature of Business and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
May 02, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Equity Method Investments
Summarized financial information for equity method investments consist of the following:

 
Year Ended
 
May 2,
2020
 
April 27,
2019
 
April 28,
2018
Balance sheet data:
 
 
 
 
 
Current assets
$
10,593

 
$
192

 
 
Non-current assets
4,266

 
2,626

 
 
Current liabilities
2,755

 
839

 
 
Non-current liabilities
4,086

 
2,599

 
 
Income statement data:
 
 
 
 
 
Net loss
(1,383
)
 
(2,168
)
 
(1,493
)
Schedule of Cash and Cash Equivalents
The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets that sum to the totals of the same amounts shown in the consolidated statement of cash flows:

 
May 2,
2020
 
April 27,
2019
 
April 28,
2018
Cash and cash equivalents
$
40,398

 
$
35,383

 
$
29,727

Restricted cash
14

 
359

 
28

Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows
$
40,412

 
$
35,742

 
$
29,755
Restrictions on Cash and Cash Equivalents
The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets that sum to the totals of the same amounts shown in the consolidated statement of cash flows:

 
May 2,
2020
 
April 27,
2019
 
April 28,
2018
Cash and cash equivalents
$
40,398

 
$
35,383

 
$
29,727

Restricted cash
14

 
359

 
28

Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows
$
40,412

 
$
35,742

 
$
29,755
Schedule of Property and Equipment
In accordance with ASC 360, Property, Plant, and Equipment, property and equipment are stated at cost and depreciated principally on the straight-line method over the following estimated useful lives:
 
Years
Buildings and improvements
5 - 40
Machinery and equipment
5 - 7
Office furniture and equipment
3 - 5
Computer software and hardware
3 - 5
Equipment held for rental
2 - 7
Demonstration equipment
3 - 5
Transportation equipment
5 - 7
Property and equipment, net consisted of the following:
 
May 2,
2020
 
April 27,
2019
Land
$
2,183

 
$
1,738

Buildings
68,804

 
66,403

Machinery and equipment
104,157

 
96,486

Office furniture and equipment
6,151

 
6,195

Computer software and hardware
53,441

 
55,460

Equipment held for rental
287

 
287

Demonstration equipment
8,473

 
7,422

Transportation equipment
7,944

 
7,715

 
251,440

 
241,706

Less accumulated depreciation
183,956

 
176,392

 
$
67,484

 
$
65,314
Schedule of Earnings Per Share Reconciliation
The following is a reconciliation of the net income (loss) and common share amounts used in the calculation of basic and diluted EPS for the fiscal years ended May 2, 2020, April 27, 2019 and April 28, 2018:
 
Net income (loss)
 
Shares
 
Per share income (loss)
For the year ended May 2, 2020:
 
 
 
 
 
Basic earnings per share
$
491

 
45,031

 
$
0.01

Dilution associated with stock compensation plans
—

 
285

 
—

Diluted earnings per share
$
491

 
45,316

 
$
0.01

For the year ended April 27, 2019:
 

 
 
 
 

Basic loss per share
$
(958
)
 
44,926

 
$
(0.02
)
Dilution associated with stock compensation plans
—

 
—

 
—

Diluted loss per share
$
(958
)
 
44,926

 
$
(0.02
)
For the year ended April 28, 2018:
 

 
 
 
 

Basic earnings per share
$
5,562

 
44,457

 
$
0.13

Dilution associated with stock compensation plans
—

 
416

 
(0.01
)
Diluted earnings per share
$
5,562

 
44,873

 
$
0.12