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Cash Flow Information - Change in Operating Assets and Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 29, 2017 | Apr. 30, 2016 | May 02, 2015
(Increase) decrease: |  |  |
Restricted cash | $ (18) | $ 298 | $ 18
Accounts 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 receivable | 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 | (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 | 1,256 | 2,120 | (250)
Long-term marketing obligations and other payables | (43) | (456) | 3,468
Change in operating assets and liabilities | $ 7,322 | $ (9,583) | $ 13,740

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- Definition The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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