Sales, Contract Assets and Contract Liabilities (Details Textual)	9 Months Ended
Dec. 31, 2019 USD ($)
Sales, Contract Assets and Contract Liabilities (Textual)
Payments and accruals under contracts includes presented as receivables	$ 11,433,348

Payments and accruals under contracts includes presented as receivables.

No definition available.

Name:	pgtk_PaymentsAndAccrualsUnderContractsIncludesPresentedAsReceivables
Namespace Prefix:	pgtk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration