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Cashflow Information
12 Months Ended
Apr. 28, 2012
Cash Flow Information [Abstract]  
Cash Flow Information
Cash Flow Information

The changes in operating assets and liabilities consisted of the following:
 
Year Ended
 
April 28,
2012
 
April 30,
2011
 
May 1,
2010
(Increase) decrease:
 
 
 
 
 
Restricted cash
$
377

 
$
(282
)
 
$
(181
)
Account receivable
(4,995
)
 
(16,837
)
 
14,073

Long-term receivables
462

 
(756
)
 
4,165

Inventories
(7,539
)
 
(10,341
)
 
17,711

Costs and estimated earnings in excess of billings
1,173

 
1,040

 
2,308

Prepaid expenses and other current assets
784

 
82

 
(812
)
Income taxes receivable
(1,120
)
 
2,574

 
(7,444
)
Advertising rights and other assets
226

 
823

 
1,043

Increase (decrease):
 

 
 

 
 

Accounts payable and accrued expenses
6,975

 
11,242

 
(6,399
)
Customer deposits
1,538

 
1,940

 
(659
)
Billings in excess of costs and estimated earnings
(5,899
)
 
7,179

 
(664
)
Long-term warranty obligations
(767
)
 
4,561

 
(576
)
Income taxes payable
(215
)
 
853

 
(2,715
)
Long-term deferred revenue
783

 
1,256

 
1,446

Other long-term obligations
(915
)
 
41

 
(208
)
 
$
(9,132
)
 
$
3,375

 
$
21,088


Supplemental disclosures of cash flow information consisted of the following:
 
Year Ended
 
April 28,
2012
 
April 30,
2011
 
May 1,
2010
Cash payments for:
 
 
 
 
 
Interest
$
306

 
$
113

 
$
262

Income taxes, net of refunds
4,292

 
(3,683
)
 
7,745


Supplemental schedule of non-cash investing and financing activities consisted of the following:
 
Year Ended
 
April 28,
2012
 
April 30,
2011
 
May 1,
2010
Demonstration equipment transferred to inventories
$
409

 
$
896

 
$
1,955

Contributions of common stock under the employee stock purchase plan
1,413

 
1,382

 
1,699

Purchase of plant and equipment included in accounts payable and notes payable
1,475

 
673

 
289

Transfer of equipment or conversion of accounts receivable from affiliates

 

 
53