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Future Minimum Lease Payments (Details) (USD $)
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Apr. 30, 2014
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| Operating Leased Assets [Line Items] | |
| 2015 | $ 391,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent |
| 2016 | 383,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears |
| 2017 | 158,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears |
| 2018 | 90,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears |
| 2019 | 45,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears |
| Thereafter | |
| Total | 1,067,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue |
| Non-Related Party | |
| Operating Leased Assets [Line Items] | |
| 2015 |
301,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent / us-gaap_LeaseArrangementTypeAxis = DRAM_NonRelatedPartyMember |
| 2016 |
293,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears / us-gaap_LeaseArrangementTypeAxis = DRAM_NonRelatedPartyMember |
| 2017 |
68,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears / us-gaap_LeaseArrangementTypeAxis = DRAM_NonRelatedPartyMember |
| 2018 | |
| 2019 | |
| Thereafter | |
| Total |
662,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue / us-gaap_LeaseArrangementTypeAxis = DRAM_NonRelatedPartyMember |
| Related Party | |
| Operating Leased Assets [Line Items] | |
| 2015 |
90,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent / us-gaap_LeaseArrangementTypeAxis = DRAM_RelatedPartyMember |
| 2016 |
90,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears / us-gaap_LeaseArrangementTypeAxis = DRAM_RelatedPartyMember |
| 2017 |
90,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears / us-gaap_LeaseArrangementTypeAxis = DRAM_RelatedPartyMember |
| 2018 |
90,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears / us-gaap_LeaseArrangementTypeAxis = DRAM_RelatedPartyMember |
| 2019 |
45,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears / us-gaap_LeaseArrangementTypeAxis = DRAM_RelatedPartyMember |
| Thereafter | |
| Total |
$ 405,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue / us-gaap_LeaseArrangementTypeAxis = DRAM_RelatedPartyMember |
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- Details
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- Definition
Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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