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Schedule II Valuation Accounts | 12 Months Ended
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Apr. 30, 2013
Schedule II Valuation Accounts | FINANCIAL STATEMENT SCHEDULES Schedule II Valuation Accounts Allowance for Doubtful Accounts (in thousands)
|  | Fiscal Year Ended April 30, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Balance at beginning of period |  | $ | 740 |  |  | $ | 920 |  |  | $ | 1,602 |
Additions —Charged to expense |  |  | 2,072 |  |  |  | 730 |  |  |  | 363 |
Deductions —Bad debts written off, net of recoveries |  |  | (1,239) |  |  |  | (911) |  |  |  | (1,045) |
Balance at end of period |  | $ | 1,573 |  |  | $ | 740 |  |  | $ | 920

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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