ORGANIZATION, BASIS OF PRESENTATION AND ACCOUNTING POLICIES - Initiatives (Details)	3 Months Ended
Jun. 30, 2017
Cost Savings Initiatives Program
Sales Force Reduction
Reduction in sales force (as a percent)	32.00%

The number of salesforce positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s).

No definition available.

Name:	arlz_RestructuringAndRelatedCostNumberOfSalesforcePositionsEliminatedPeriodPercent
Namespace Prefix:	arlz_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration