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Nature of Business and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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May. 02, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
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:
| May 2, 2015 |  | April 26, 2014
Land | $ | 2,147 |  |  | $ | 2,539 |
Buildings | 64,186 |  |  | 59,363 |
Machinery and equipment | 80,664 |  |  | 72,787 |
Office furniture and equipment | 15,823 |  |  | 15,754 |
Computer software and hardware | 51,083 |  |  | 45,329 |
Equipment held for rental | 803 |  |  | 868 |
Demonstration equipment | 7,299 |  |  | 7,532 |
Transportation equipment | 6,012 |  |  | 4,823 |
| 228,017 |  |  | 208,995 |
Less accumulated depreciation | 155,173 |  |  | 143,725 |
| $ | 72,844 |  |  | $ | 65,270 |
Schedule of Earnings Per Share Reconciliation | The following is a reconciliation of the income and common stock share amounts used in the calculation of basic and diluted EPS for the fiscal years ended May 2, 2015, April 26, 2014 and April 27, 2013:
| Net income |  | Shares |  | Per share income (loss)
For the year ended May 2, 2015: |  |  |  |  |
Basic earnings per share | $ | 20,882 |  |  | 43,514 |  |  | $ | 0.48 |
Dilution associated with stock compensation plans | — |  |  | 929 |  |  | (0.01 | )
Diluted earnings per share | $ | 20,882 |  |  | 44,443 |  |  | $ | 0.47 |
For the year ended April 26, 2014: |  |  |  |  |  |  |
Basic earnings per share | $ | 22,206 |  |  | 42,886 |  |  | $ | 0.52 |
Dilution associated with stock compensation plans | — |  |  | 876 |  |  | (0.01 | )
Diluted earnings per share | $ | 22,206 |  |  | 43,762 |  |  | $ | 0.51 |
For the year ended April 27, 2013: |  |  |  |  |  |  |
Basic earnings per share | $ | 22,779 |  |  | 42,280 |  |  | $ | 0.54 |
Dilution associated with stock compensation plans | — |  |  | 341 |  |  | (0.01 | )
Diluted earnings per share | $ | 22,779 |  |  | 42,621 |  |  | $ | 0.53 |

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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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph b -Article 5 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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