Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_MinorityInterestLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

BUSINESS AND OPERATIONS OF THE COMPANY (Details)	Dec. 31, 2019	Jun. 30, 2019	Jun. 29, 2019	Dec. 31, 2018	Mar. 31, 2018	Mar. 30, 2018
AMAK
Noncontrolling Interest [Line Items]
Ownership percentage	33.30%	33.30%	33.40%	33.40%	33.41%	33.44%
PEVM
Noncontrolling Interest [Line Items]
Ownership percentage	55.00%