Name:	psbq_ForeclosedAssetsCarryingValue
Namespace Prefix:	psbq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

No definition available.

Name:	psbq_LoansReceivableImpairedFairValueDisclosure
Namespace Prefix:	psbq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The value of loans which were transferred to foreclosed assets in noncash transactions..

No definition available.

Name:	psbq_LoansTransferredToForeclosedAssets
Namespace Prefix:	psbq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The valuation allowance for impaired mortgage servicing rights the company includes within loans receivable sub-schedules.

No definition available.

Name:	psbq_MortgageServicingRightsImpairedLineItemsValuationAllowance
Namespace Prefix:	psbq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of selling costs as a percentage of property value.

No definition available.

Name:	psbq_SellingCostsPercentage
Namespace Prefix:	psbq_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

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-Section 45

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Name:	us-gaap_ForeclosedAssets
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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

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Name:	us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Period Type:	instant

Amount of expense recognized in the income statement for a decrease in valuation of real estate owned (REO).

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

-Publisher FASB

-Name Accounting Standards Codification

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Name:	us-gaap_RealEstateOwnedValuationAllowanceProvision1
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Period Type:	duration

Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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

-Publisher FASB

-Name Accounting Standards Codification

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Name:	us-gaap_ServicingAssetAtAmortizedValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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

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