2.2.0.25falsefalse11001 - Disclosure - Commitments and Contingenciestruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) / shares USD ($) $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000866368duration2011-01-01T00:00:002011-03-31T00:00:00Unit13Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0psb_CommitmentsAndContingenciesAbstractpsbfalsenadurationCommitments and Contingencies Abstractfalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringCommitments and Contingencies AbstractfalsefalseCommitments and Contingencies3false0us-gaap_CommitmentsAndContingenciesDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> <div> <p style="text-indent: -0.2in; margin: 0in 0in 0pt 0.2in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"><b>10.<font class="_mt">&nbsp; <b><font style="font-family: 'Times New Roman','serif'; font-size: 10pt;" class="_mt">Commitments and contingencies</font></b><font style="font-family: 'Times New Roman','serif'; font-size: 10pt;" class="_mt"> </font></font></b></p> <p style="text-indent: -0.2in; margin: 0in 0in 0pt 0.2in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal">&nbsp;</p> <p style="text-align: justify; text-indent: 0.2in; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal">The Company currently is neither subject to any material litigation nor, to management's knowledge, is any material litigation currently threatened against the Company other than routine litigation and administrative proceedings arising in the ordinary course of business.</p></div> </div>10.&nbsp; Commitments and contingencies &nbsp; The Company currently is neither subject to any material litigation nor, to management's knowledge, is anyfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIncludes disclosure of commitments and contingencies. This element may be used as a single block of text to encapsulate the entire disclosure including data and tables.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 14 -Paragraph 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 falsefalseCommitments and Contingencies12Commitments and ContingenciesUnKnownUnKnownUnKnownUnKnownfalsetrue