Basis of Presentations and Summary of Significant Accounting Policies - Revenue Recognition (Details) $ in Millions	12 Months Ended
Dec. 31, 2017 USD ($)
Basis of Presentations and Summary of Significant Accounting Policies
Adjustment to product revenue due to change in shipping terms	$ 1.1

Represents adjustment to product revenue due to change in shipping terms.

No definition available.

Name:	lfgr_ChangeInShippingTermsRevenueAdjustment
Namespace Prefix:	lfgr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration