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Accrued Expenses and Other Current Liabilities | 9 Months Ended
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Apr. 30, 2015
Accrued Liabilities, Current [Abstract] |
Accrued Expenses and Other Current Liabilities | Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consist of the following at:
|  | April 30, 2015 |  | July 31, 2014
Accrued wages and benefits |  | $ | 10,126,000 |  |  | 12,410,000 |
Accrued warranty obligations |  | 8,293,000 |  |  | 8,618,000 |
Accrued commissions and royalties |  | 2,768,000 |  |  | 3,215,000 |
Other |  | 5,888,000 |  |  | 5,560,000 |
Accrued expenses and other current liabilities |  | $ | 27,075,000 |  |  | 29,803,000 |
Accrued Warranty Obligations We provide warranty coverage for most of our products for a period of at least one year from the date of shipment. We record a liability for estimated warranty expense based on historical claims, product failure rates and other factors. Some of our product warranties are provided under long-term contracts, the costs of which are incorporated into our estimates of total contract costs. Changes in our product warranty liability were as follows:
|  | Nine months ended April 30,
|  | 2015 |  | 2014
Balance at beginning of period |  | $ | 8,618,000 |  |  | 7,797,000 |
Provision for warranty obligations |  | 3,255,000 |  |  | 5,364,000 |
Charges incurred |  | (3,580,000 | ) |  | (4,176,000 | )
Balance at end of period |  | $ | 8,293,000 |  |  | 8,985,000 |

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- Definition The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. + 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 210.5-02.19(a),20,24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph a -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 24 -Article 5 + Details
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