2.4.0.83130 - Disclosure - Derivative Financial Instruments (Tables)truefalsefalse1false
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2pgrx_ScheduleOfAssumptionsUsedToEstimateFairValueOfWarrantsTableTextBlockpgrx_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel| 1falsefalsefalse00<div style="font-size:10.0pt;font-family:Times New Roman;">
<p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">The fair value of the warrants at June 30, 2013 was estimated using the Black-Scholes pricing model based on the following significant assumptions:</font></p>
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<p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Expected Term</font></p></td>
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<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">0.36 years</font></p></td>
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<p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Volatility*</font></p></td>
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<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">105.93%</font></p></td>
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<p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Risk-Free Rate</font></p></td>
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<td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 15%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="15%">
<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">0.06%</font></p></td>
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<p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Dividend Yield</font></p></td>
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<p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">—</font></p></td>
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<p style="TEXT-INDENT: -4.5pt; MARGIN: 0in 0in 0pt 58.5pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">*The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.</font></p>
</div>falsefalsefalse | nonnum:textBlockItemTypenaTabular disclosure of assumptions used to estimate the fair value of warrants.No definition available.false0
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