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Cash Flow Information (Tables) | 12 Months Ended
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Apr. 30, 2016
Supplemental Cash Flow Information [Abstract] |
Summary of Changes in Operating Assets and Liabilities | The changes in operating assets and liabilities consisted of the following:
| Year Ended
| April 30, 2016 |  | May 2, 2015 |  | April 26, 2014
(Increase) decrease: |  |  |  |  |
Restricted cash | $ | 298 |  |  | $ | 18 |  |  | $ | (466 | )
Account receivable | 3,789 |  |  | 6,412 |  |  | (18,293 | )
Long-term receivables | 2,851 |  |  | 3,234 |  |  | 3,027 |
Inventories | (5,100 | ) |  | (1,907 | ) |  | (12,771 | )
Costs and estimated earnings in excess of billings | 4,867 |  |  | (1,667 | ) |  | 5,955 |
Prepaid expenses and other current assets | 1,290 |  |  | (575 | ) |  | (536 | )
Income taxes receivables | 1,061 |  |  | (3,084 | ) |  | (2,414 | )
Advertising rights and other assets | (776 | ) |  | 912 |  |  | 64 |
Increase (decrease): |  |  |  |  |  |  |  |
Current marketing obligations and other payables | 21 |  |  | (146 | ) |  | 372 |
Accounts payable | (9,926 | ) |  | 5,594 |  |  | 6,701 |
Customer deposits (billed or collected) | (941 | ) |  | (1,315 | ) |  | 4,931 |
Accrued expenses | 476 |  |  | 2,860 |  |  | 165 |
Warranty obligations | 4,726 |  |  | (2,638 | ) |  | 543 |
Billings in excess of costs and estimated earnings | (13,436 | ) |  | 1,314 |  |  | 8,238 |
Long-term warranty obligations | (710 | ) |  | 1,869 |  |  | 1,560 |
Income taxes payable | (40 | ) |  | (666 | ) |  | (527 | )
Deferred revenue (billed or collected) | 2,120 |  |  | (250 | ) |  | (836 | )
Long-term marketing obligations and other payables | (456 | ) |  | 3,468 |  |  | (501 | )
| $ | (9,886 | ) |  | $ | 13,433 |  |  | $ | (4,788 | )
Schedule of Supplemental Cash Flow Information | Supplemental disclosures of cash flow information consisted of the following:
| Year Ended
| April 30, 2016 |  | May 2, 2015 |  | April 26, 2014
Cash payments for: |  |  |  |  |
Interest | $ | 303 |  |  | $ | 289 |  |  | $ | 198 |
Income taxes, net of refunds | (824 | ) |  | 8,690 |  |  | 16,521 |
Schedule of Non-Cash Investing and Financing Activities | Supplemental schedule of non-cash investing and financing activities consisted of the following:
|  | Year Ended
|  | April 30, 2016 |  | May 2, 2015 |  | April 26, 2014
Demonstration equipment transferred to inventory |  | $ | 227 |  |  | $ | 34 |  |  | $ | 255 |
Purchases of property and equipment included in accounts payable |  | 142 |  |  | 1,510 |  |  | 2,099 |
Contributions of common stock under the ESPP |  | 1,777 |  |  | 2,512 |  |  | 1,552 |
Contingent consideration related to acquisition of ADFLOW |  | 1,955 |  |  | — |  |  | — |

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- Definition Tabular disclosure of the net increase (decrease) in operating capital in the operating section of the statement of cash flows, represents the entire footnote disclosure that provides details regarding the net change during the reporting period of all assets and liabilities used in operating activities. + References No definition available. + Details
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