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Compensatory Equity Incentive Plan and Other Equity Incentives (Details 5) (USD $) | 12 Months Ended
--- | ---
Jun. 30, 2013 | Jun. 30, 2012
Stock based compensation | $ 268,307 | $ 272,044
General & administrative | 263,247 | 254,337
Cost of sales | (4,350) | 8,328
New product development | 9,409 | 9,379
Stock Option |  |
Stock based compensation | 65,286 | 86,096
Restricted Stock Units (RSUs) |  |
Stock based compensation | $ 203,021 | $ 185,948

X
- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Recorded in cost of sales. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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Period Type: | duration

X
- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Recorded in general &amp;amp; administrative expense. + References No definition available. + Details
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Namespace Prefix: | LPTH_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Recorded in new product development. + References No definition available. + Details
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Namespace Prefix: | LPTH_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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Data Type: | xbrli:monetaryItemType
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