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RETIREMENT PLANS (Details) - USD ($) | 12 Months Ended
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Apr. 30, 2015 | Apr. 30, 2014 | Apr. 30, 2013
RETIREMENT PLANS [Abstract] |  |  |
Age threshold for 401 (k) plan | 21 years |  |
Hours worked per calendar year established as threshold for 401(k) plan | 1000 hours |  |
Requisite service period to participate in contribution plan | 6 months |  |
Maximum contribution each employee towards profit sharing plan (in hundredths) | 3.50% |  |
Maximum contribution each employee, towards 401(k) plan (in hundredths) | 4.00% |  |
Total contribution percentage in profit sharing and 401(k) plan (in hundredths) | 7.50% |  |
Employer contribution towards profit sharing plan and 401(k) plan | $ 1,000,000 | $ 1,100,000 | $ 912,000

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- Definition The minimum required age to participate in defined contribution 401(k) plan. + References No definition available. + Details
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- Definition The minimum required hours per calendar year worked to participate in defined contribution 401(k) plan. + References No definition available. + Details
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- Definition The maximum total percentage per employee, by the terms of the plan, that the employer may contribute to a profit sharing plan and defined contribution plan . + References No definition available. + Details
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- Definition Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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