Note 7 - Segment Reporting (Details Textual)	3 Months Ended	9 Months Ended
Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Number of Countries in which Entity Operates	5		5
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Number of Major Customers	0	0	0	0

Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc.

No definition available.

Name:	ltre_NumberOfMajorCustomers
Namespace Prefix:	ltre_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration