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Selected Financial Statement Data (Tables) | 12 Months Ended
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Apr. 30, 2016
Selected Financial Statement Data [Abstract] |
Schedule of Inventories | Inventories consisted of the following:
| April 30, 2016 |  | May 2, 2015
Raw materials | $ | 28,184 |  |  | $ | 28,325 |
Work-in-process | 6,158 |  |  | 7,512 |
Finished goods | 35,485 |  |  | 28,552 |
| $ | 69,827 |  |  | $ | 64,389 |
Schedule of Property and Equipment | Property and equipment is stated at cost and depreciated principally on the straight-line method over the following estimated useful lives:
| Years
Buildings | 7 - 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 consisted of the following:
| April 30, 2016 |  | May 2, 2015
Land | $ | 2,155 |  |  | $ | 2,147 |
Buildings | 65,247 |  |  | 64,186 |
Machinery and equipment | 82,973 |  |  | 80,664 |
Office furniture and equipment | 14,746 |  |  | 15,823 |
Computer software and hardware | 48,917 |  |  | 51,083 |
Equipment held for rental | 374 |  |  | 803 |
Demonstration equipment | 8,026 |  |  | 7,299 |
Transportation equipment | 6,596 |  |  | 6,012 |
| 229,034 |  |  | 228,017 |
Less accumulated depreciation | 155,871 |  |  | 155,173 |
| $ | 73,163 |  |  | $ | 72,844 |
Schedule of Accrued Expenses | Accrued expenses consisted of the following:
| April 30, 2016 |  | May 2, 2015
Compensation | $ | 12,065 |  |  | $ | 12,137 |
Taxes, other than income taxes | 3,969 |  |  | 4,223 |
Other | 7,498 |  |  | 9,703 |
| $ | 23,532 |  |  | $ | 26,063 |
Schedule of Other (Expense) Income | Other (expense) income, net consisted of the following:
| Year Ended
| April 30, 2016 |  | May 2, 2015 |  | April 26, 2014
Foreign currency transaction losses | $ | (326 | ) |  | $ | (514 | ) |  | $ | (292 | )
Other | 198 |  |  | 16 |  |  | (63 | )
| $ | (128 | ) |  | $ | (498 | ) |  | $ | (355 | )

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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