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Inventories (Tables) | 9 Months Ended
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Jan. 31, 2016
Inventory Disclosure [Abstract] |
Summary of Inventories | The following table sets forth a summary of inventories, net of reserves, stated at lower of cost or market, as of January 31, 2016 and April 30, 2015 (in thousands):
| January 31, 2016 |  |  | April 30, 2015 |
Finished goods | $ | 27,562 |  |  | $ | 28,240 |
Finished parts |  | 30,567 |  |  |  | 34,269 |
Work in process |  | 8,047 |  |  |  | 7,492 |
Raw material |  | 9,366 |  |  |  | 6,894 |
Total inventories | $ | 75,542 |  |  | $ | 76,895 |

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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