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Schedule II-VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2018 | Apr. 30, 2017 | Apr. 30, 2016
Allowance for Sales Returns [Member] |  |  |  |
Valuation allowances and reserves [Roll Forward] |  |  |  |
Balance at beginning of period | [1] | $ 24,300 | $ 19,861 | $ 25,340
Additions/(Deductions) charged to expenses and other | [1] | (3,486) | 53,482 | 56,094
Deductions from reserves | [1],[2] | 2,186 | 49,043 | 61,573
Balance at end of period | [1] | 18,628 | 24,300 | 19,861
Allowance for Doubtful Accounts [Member] |  |  |  |
Valuation allowances and reserves [Roll Forward] |  |  |  |
Balance at beginning of period |  | 7,186 | 7,254 | 8,290
Additions/(Deductions) charged to expenses and other |  | 5,439 | 2,913 | 698
Deductions from reserves | [2] | 2,518 | 2,981 | 1,734
Balance at end of period |  | 10,107 | 7,186 | 7,254
Allowance for Inventory Obsolescence [Member] |  |  |  |
Valuation allowances and reserves [Roll Forward] |  |  |  |
Balance at beginning of period |  | 21,096 | 21,968 | 21,901
Additions/(Deductions) charged to expenses and other |  | 9,182 | 9,538 | 15,167
Deductions from reserves | [2] | 12,085 | 10,410 | 15,100
Balance at end of period |  | $ 18,193 | $ 21,096 | $ 21,968
[1] | Allowance for Sales Returns represents anticipated returns net of a recovery of inventory and royalty costs. The provision is reported as a reduction of gross sales to arrive at revenue and the reserve balance is reported as a reduction of Accounts Receivable with a corresponding increase in Inventories and a reduction in Accounts and Royalties Payable (See Note 2).
[2] | Deductions from reserves include foreign exchange translation adjustments, accounts written off, less recoveries and items removed from inventory.

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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