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Notes Payable (Details Narrative)	Dec. 31, 2021	Dec. 31, 2020
Notes Payable
Prime rate	3.25%	3.25%
Weighted-average interest rate	5.15%	5.44%

Custom Element.

No definition available.

Name:	pgai_PrimeRate
Namespace Prefix:	pgai_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

No definition available.

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

Weighted average interest rate of debt outstanding.

No definition available.

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant