Name:	posc_BusinessAcquisitionPurchasesPriceAllocationAssetsAcquiredLiabilitiesAssumedNet
Namespace Prefix:	posc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of cash and cash equivalents acquired in a business combination.

No definition available.

Name:	posc_BusinessAcquisitionPurchasesPriceAllocationCurrentAssetsCashAndCashEquivalents
Namespace Prefix:	posc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of acquisition cost of a business combination allocated to accounts payable of the acquired entity.

No definition available.

Name:	posc_BusinessAcquisitionPurchasesPriceAllocationCurrentLiabilitiesAccountsPayable
Namespace Prefix:	posc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

No definition available.

Name:	posc_BusinessAcquisitionPurchasesPriceAllocationGoodwillAmount
Namespace Prefix:	posc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of acquisition cost of a business combination allocated to notes payables and long-term debt assumed from the acquired entity.

No definition available.

Name:	posc_BusinessAcquisitionPurchasesPriceAllocationNotesPayableAndLongTermDebt
Namespace Prefix:	posc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

No definition available.

Name:	posc_BusinessAcquisitionPurchasesPriceAllocationPropertyPlantAndEquipment
Namespace Prefix:	posc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

No definition available.