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Withdrawn Financing Plan (Details Narrative) (USD $) | 12 Months Ended
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Jun. 30, 2012
Financing Plan units intended for sale | 4,500,000
Prepaid offering costs, written off in period | $ 227,000
Class A Common Stock |
Financing Plan Unit Composition | 0.25
Common Stock Warrants |
Financing Plan Unit Composition | 0.25

X
- Definition The composition of each unit intended for sale in the financing plan. + References No definition available. + Details
Name: | LPTH_FinancingPlanUnitComposition
Namespace Prefix: | LPTH_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of units intended for sale in the financing plan. + References No definition available. + Details
Name: | LPTH_FinancingPlanUnitsIntendedForSale
Namespace Prefix: | LPTH_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of prepaid offering costs related to the financing plan written off during the period. + References No definition available. + Details
Name: | LPTH_PrepaidOfferingCostsWrittenOff
Namespace Prefix: | LPTH_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration