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Cash Flow Information
 12 Months Ended
Apr. 29, 2017
Supplemental Cash Flow Information [Abstract]  
Cash Flow Information
Note 14. Cash Flow Information

The changes in operating assets and liabilities consisted of the following:
 
Year Ended
 
April 29,
2017
 
April 30,
2016
 
May 2,
2015
(Increase) decrease:
 
 
 
 
 
Restricted cash
$
(18
)
 
$
298

 
$
18

Account receivable
(2,718
)
 
3,789

 
6,412

Long-term receivables
2,213

 
2,851

 
3,234

Inventories
3,581

 
(5,100
)
 
(1,907
)
Costs and estimated earnings in excess of billings
(6,203
)
 
4,867

 
(1,667
)
Prepaid expenses and other current assets
(980
)
 
1,290

 
(575
)
Income taxes receivables
4,201

 
1,061

 
(3,084
)
Investment in affiliates and other assets
(475
)
 
(776
)
 
912

Increase (decrease):
 

 
 

 
 

Current marketing obligations and other payables
857

 
21

 
(146
)
Accounts payable
5,544

 
(9,926
)
 
5,594

Customer deposits (billed or collected)
(1,514
)
 
(941
)
 
(1,315
)
Accrued expenses
2,351

 
776

 
3,128

Warranty obligations
(2,986
)
 
4,726

 
(2,638
)
Billings in excess of costs and estimated earnings
536

 
(13,436
)
 
1,314

Long-term warranty obligations
389

 
(710
)
 
1,869

Income taxes payable
1,331

 
(37
)
 
(627
)
Deferred revenue (billed or collected)
1,256

 
2,120

 
(250
)
Long-term marketing obligations and other payables
(43
)
 
(456
)
 
3,468

 
$
7,322

 
$
(9,583
)
 
$
13,740



Supplemental disclosures of cash flow information consisted of the following:
 
Year Ended
 
April 29,
2017
 
April 30,
2016
 
May 2,
2015
Cash payments for:
 
 
 
 
 
Interest
$
228

 
$
303

 
$
289

Income taxes, net of refunds
3,196

 
(824
)
 
8,690



Supplemental schedule of non-cash investing and financing activities consisted of the following:
 
 
Year Ended
 
 
April 29,
2017
 
April 30,
2016
 
May 2,
2015
Demonstration equipment transferred to inventory
 
$
218

 
$
227

 
$
34

Purchases of property and equipment included in accounts payable
 
2,524

 
142

 
1,510

Contributions of common stock under the ESPP
 
840

 
1,777

 
2,512

Contingent consideration related to acquisition of ADFLOW
 
31

 
1,955

 
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