XML 46 R34.htm IDEA: XBRL DOCUMENT v3.19.1

Inventories (Details Narrative) - USD ($)	Mar. 31, 2019	Jun. 30, 2018
Raw materials	$ 3,104,825	$ 2,309,454
Inventory - Tooling [Member]
Raw materials	$ 1,900,000	$ 1,600,000

X

- Definition

Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a)(4))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_InventoryRawMaterials
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_PublicUtilitiesInventoryAxis=lpth_ToolingRawMaterialsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: