Stock Rights Plan - Additional Information (Detail) (USD $)	1 Months Ended
Jul. 31, 2007
Class of Warrant or Right [Line Items]
Dividends declared, number of rights received to purchase one one-hundredth of a share of preferred stock	1
Price to purchase one one-hundredth of a share of preferred stock	$ 10
Minimum stock percentage accumulated by a single person or group for the rights to become exercisable	20.00%
Rights expiration date	Aug. 06, 2017
Redemption price per right	0.0001
Price to receive in the merger stock of the Company or the acquiring company	20

Class of Warrant or Right, Expiry Date of Warrants or Rights Exercisable

No definition available.

Name:	ptsx_ClassOfWarrantOrRightExpiryDateOfWarrantsOrRightsExercisable
Namespace Prefix:	ptsx_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Class of Warrant or Right, Price to Purchase Merger Stock in Event of Merger or Acquisition

+ References

No definition available.

+ Details

Name:	ptsx_ClassOfWarrantOrRightPriceToPurchaseMergerStockInEventOfMergerOrAcquisition
Namespace Prefix:	ptsx_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Class Of Warrant Or Right Redemption Price Of Warrants Or Rights

+ References

No definition available.

+ Details

Name:	ptsx_ClassOfWarrantOrRightRedemptionPriceOfWarrantsOrRights
Namespace Prefix:	ptsx_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Common Stock Dividends Right Per Share Declared

+ References

No definition available.

+ Details

Name:	ptsx_CommonStockDividendsRightPerShareDeclared
Namespace Prefix:	ptsx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Minimum Outstanding Stock Percentage That Should be Acquired for Rights Issued to Become Exercisable

+ References

No definition available.

+ Details

Name:	ptsx_MinimumOutstandingStockPercentageThatShouldBeAcquiredForRightsIssuedToBecomeExercisable
Namespace Prefix:	ptsx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(4))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Details

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