Basis of Presentations and Summary of Significant Accounting Policies - Basis of Presentation - Debt agreement (Details) - Revolving Credit Facility	Nov. 07, 2019
Debt
Debt instrument, Required Percentage of global cash	85.00%
Debt instrument, Maximum threshold consecutive business days	10 days
Debt instrument, Threshold percentage of global cash to be maintained	75.00%

Represents the maximum threshold consecutive business days in a calendar month for which the global cash on account with the lender may fall below the required percentage under the debt instrument agreement.

No definition available.

Name:	leaf_DebtInstrumentThresholdConsecutiveBusinessDays
Namespace Prefix:	leaf_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration