Foreclosed Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Foreclosed Assets [Abstract]
Balance at beginning of year	$ 1,750us-gaap_ForeclosedAssets	$ 1,774us-gaap_ForeclosedAssets	$ 2,939us-gaap_ForeclosedAssets
Transfer of loans at net realizable value to foreclosed assets	801	1,342	1,295
Sale proceeds	(782)psbq_SaleProceedsPeriodForeclosedAssets	(831)psbq_SaleProceedsPeriodForeclosedAssets	(1,527)psbq_SaleProceedsPeriodForeclosedAssets
Loans made on sale of foreclosed assets	(43)	(234)	(490)
Net gain (loss) from sale of foreclosed assets	(10)psbq_NetGainLossSaleForeclosedAssets	105psbq_NetGainLossSaleForeclosedAssets	42psbq_NetGainLossSaleForeclosedAssets
Provision for write-down charged to operations	(55)	(406)	(485)
Balance at end of year	$ 1,661us-gaap_ForeclosedAssets	$ 1,750us-gaap_ForeclosedAssets	$ 1,774us-gaap_ForeclosedAssets

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Noncash investing activities related to loans originated on the sale of foreclosed assets.

+ References

No definition available.

+ Details

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- Definition

Client loan collateral assets transferred from loans receivable to foreclosed assets during the period, at net realizable value.

+ References

No definition available.

+ Details

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- Definition

Net gain on the sale of foreclosed client assets during the period.

+ References

No definition available.

+ Details

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- Definition

Proceeds of sale of foreclosed client assets during the period.

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance; includes real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4437-111522

+ Details

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10(4))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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