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  <us-gaap:CashAndCashEquivalentsAtCarryingValue id="Tag138" decimals="-3" contextRef="I2010" unitRef="USD">30713000</us-gaap:CashAndCashEquivalentsAtCarryingValue>
  <us-gaap:NetCashProvidedByUsedInContinuingOperations id="Tag139" decimals="-3" contextRef="D2012Q1" unitRef="USD">-19899000</us-gaap:NetCashProvidedByUsedInContinuingOperations>
  <us-gaap:NetCashProvidedByUsedInFinancingActivitiesContinuingOperations id="Tag140" decimals="-3" contextRef="D2012Q1" unitRef="USD">-70000</us-gaap:NetCashProvidedByUsedInFinancingActivitiesContinuingOperations>
  <us-gaap:RepaymentsOfLongTermCapitalLeaseObligations id="Tag141" decimals="-3" contextRef="D2012Q1" unitRef="USD">38000</us-gaap:RepaymentsOfLongTermCapitalLeaseObligations>
  <us-gaap:ProceedsFromIssuanceOfCommonStock id="Tag143" decimals="-3" contextRef="D2012Q1" unitRef="USD">148000</us-gaap:ProceedsFromIssuanceOfCommonStock>
  <us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations id="Tag144" decimals="-3" contextRef="D2012Q1" unitRef="USD">-426000</us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations>
  <us-gaap:PaymentsToAcquirePropertyPlantAndEquipment id="Tag145" decimals="-3" contextRef="D2012Q1" unitRef="USD">326000</us-gaap:PaymentsToAcquirePropertyPlantAndEquipment>
  <us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations id="Tag146" decimals="-3" contextRef="D2012Q1" unitRef="USD">-19403000</us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations>
  <mack:IncreaseDecreaseDeferredLeaseBenefitsAndTaxIncentive id="Tag148" decimals="-3" contextRef="D2012Q1" unitRef="USD">329000</mack:IncreaseDecreaseDeferredLeaseBenefitsAndTaxIncentive>
  <us-gaap:IncreaseDecreaseInDeferredRevenue id="Tag149" decimals="-3" contextRef="D2012Q1" unitRef="USD">3362000</us-gaap:IncreaseDecreaseInDeferredRevenue>
  <us-gaap:IncreaseDecreaseInAccountsPayable id="Tag151" decimals="-3" contextRef="D2012Q1" unitRef="USD">-2057000</us-gaap:IncreaseDecreaseInAccountsPayable>
  <us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets id="Tag152" decimals="-3" contextRef="D2012Q1" unitRef="USD">763000</us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets>
  <us-gaap:IncreaseDecreaseInReceivables id="Tag153" decimals="-3" contextRef="D2012Q1" unitRef="USD">-1446000</us-gaap:IncreaseDecreaseInReceivables>
  <us-gaap:ShareBasedCompensation id="Tag154" decimals="-3" contextRef="D2012Q1" unitRef="USD">1339000</us-gaap:ShareBasedCompensation>
  <us-gaap:DepreciationDepletionAndAmortization id="Tag155" decimals="-3" contextRef="D2012Q1" unitRef="USD">1380000</us-gaap:DepreciationDepletionAndAmortization>
  <mack:AmortizationOfDeferredLeaseBenefitsAndTaxIncentives id="Tag156" decimals="-3" contextRef="D2012Q1" unitRef="USD">-179000</mack:AmortizationOfDeferredLeaseBenefitsAndTaxIncentives>
  <dei:EntityRegistrantName id="Tag158" contextRef="D2012Q1">MERRIMACK PHARMACEUTICALS INC</dei:EntityRegistrantName>
  <dei:EntityCentralIndexKey id="Tag159" contextRef="D2012Q1">0001274792</dei:EntityCentralIndexKey>
  <dei:DocumentType id="Tag160" contextRef="D2012Q1">10-Q</dei:DocumentType>
  <us-gaap:EarningsPerShareTextBlock contextRef="D2012Q1">&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;4.&amp;#160; Net Loss per Common Share&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Basic net loss per share is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of common shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is computed by dividing the net loss attributable to common stockholders by the weighted-average number of common share equivalents outstanding for the period determined using the treasury-stock method. For purposes of this calculation, convertible preferred stock, stock options and warrants are considered to be common stock equivalents and are only included in the calculation of diluted net loss per share when their effect is dilutive.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The following table presents the computation of basic and diluted net loss per share available to common stockholders for the three months ended March&amp;#160;31, 2011 and 2012:&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 100%; BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 26.5%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="26%" colspan="5"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Three&amp;#160;months&amp;#160;&lt;br /&gt;
ended&amp;#160;March&amp;#160;31,&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;(in&amp;#160;thousands,&amp;#160;except&amp;#160;per&amp;#160;share&amp;#160;amount)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;2011&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;2012&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Net&amp;#160;Loss&amp;#160;Per&amp;#160;Share:&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Numerator:&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Net loss attributable to Merrimack Pharmaceuticals,&amp;#160;Inc. &lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(13,457&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(23,284&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Plus: Unaccreted dividends on convertible preferred stock&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(1,537&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0.375pt; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(2,040&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0.375pt; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Net loss available to common stockholders&amp;#8212;basic and diluted&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(14,994&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(25,324&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Denominator:&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Weighted-average common shares&amp;#8212;basic and diluted&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;11,106&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;11,846&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Net loss per share available to common stockholders&amp;#8212;basic and diluted&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(1.35&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(2.14&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The following common stock equivalents of potentially dilutive securities have been excluded from the computation of diluted weighted average shares outstanding as of March&amp;#160;31, 2011 and 2012, as the Company recorded a net loss in all periods and, therefore, they would be anti-dilutive:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 100%; BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 26.5%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="26%" colspan="3"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Three&amp;#160;months&amp;#160;ended&amp;#160;March&amp;#160;31,&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;(in&amp;#160;thousands)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;2011&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;2012&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: white; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="black" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: white; PADDING-TOP: 0in" bgcolor="black" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: white; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="black" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: white; PADDING-TOP: 0in" bgcolor="black" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: white; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="black" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: white; PADDING-TOP: 0in" bgcolor="black" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Convertible preferred stock&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;55,254&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;66,256&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Options to purchase common stock&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;15,939&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;17,515&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Convertible preferred stock warrants&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;304&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;302&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Common stock warrants&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;2,937&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;2,631&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</us-gaap:EarningsPerShareTextBlock>
  <us-gaap:CollaborativeArrangementDisclosureTextBlock contextRef="D2012Q1">&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;5.&amp;#160; License and Collaboration Agreements&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Sanofi&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;On September&amp;#160;30, 2009, the Company entered into a license and collaboration agreement with Sanofi for the development and commercialization of a drug candidate being developed by the Company under the name MM-121. The agreement became effective on November&amp;#160;10, 2009 and Sanofi paid the Company a nonrefundable, noncreditable upfront license fee of $60.0 million. During the third quarter of 2010 and the fourth quarter of 2011, the Company received a total of $20.0 million in milestone payments associated with dosing the first patients in Phase 2 clinical trials in breast cancer and non-small cell lung cancer. During the first quarter of 2012, the Company received an additional milestone payment of $5.0 million associated with dosing the first patient in a Phase 2 clinical trial in ovarian cancer. The Company is eligible to receive additional future development, regulatory and sales milestone payments as well as future royalty payments depending on the success of MM-121.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Under the agreement, Sanofi is responsible for all MM-121 development and manufacturing costs. The Company retained the right to participate in the development of MM-121 through Phase 2 proof of concept trials. The Company also has the right, but not the obligation, to co-promote MM-121 in the United States. Sanofi reimburses the Company for direct costs incurred in development and compensates the Company for its internal development efforts based on a full time equivalent (&amp;#8220;FTE&amp;#8221;) rate. Also as part of the agreement, the Company was required to manufacture certain quantities of MM-121 and, at Sanofi&amp;#8217;s and the Company&amp;#8217;s option, may continue to manufacture additional quantities of MM-121 in the future. Sanofi reimburses the Company for direct costs incurred in manufacturing and compensates the Company for its internal manufacturing efforts based on an FTE rate. The Company satisfied its manufacturing obligations during 2010 and has elected to continue to manufacture quantities of MM-121.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company applied revenue recognition guidance to determine whether the performance obligations under this collaboration, including the license, the right to future technology, back-up compounds, participation on steering committees, development services and manufacturing services, could be accounted for separately or as a single unit of accounting. The Company determined that its development services performance obligation is considered a separate unit of accounting, as it is set at the Company&amp;#8217;s option, has stand-alone value and the FTE rate is considered fair value. Therefore, the Company recognizes cost reimbursements for MM-121 development services as incurred. The Company determined that the license, the right to future technology, back-up compounds, participation on steering committees and manufacturing services performance obligations represented a single unit of accounting. As the Company cannot reasonably estimate its level of effort over the collaboration, the Company recognizes revenue from the upfront payment, milestone payment and manufacturing services payments using the contingency-adjusted performance model over the expected development period, which is currently estimated to be 12 years from the effective date of the agreement. Under this model, when a milestone is earned or manufacturing services are rendered and product is delivered, revenue is immediately recognized on a pro-rata basis in the period the milestone was achieved or product was delivered based on the time elapsed from the effective date of the agreement. Thereafter, the remaining portion is recognized on a straight-line basis over the remaining development period.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;During the three months ended March&amp;#160;31, 2011 and 2012, the Company recognized revenue based on the following components of the Sanofi agreement:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 100%; BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 26.5%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="26%" colspan="5"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Three&amp;#160;months&amp;#160;ended&amp;#160;March&amp;#160;31,&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;(in&amp;#160;thousands)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;2011&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;2012&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Upfront payment&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1,250&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1,250&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Milestone payment&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;208&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1,412&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Development services&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;4,705&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;8,142&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Manufacturing services and other&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;255&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;521&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="top" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Total&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;6,418&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;11,325&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;As of December&amp;#160;31, 2011 and March&amp;#160;31, 2012, the Company maintained the following assets and liabilities related to the Sanofi agreement:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 100%; BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 62%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="62%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;(in&amp;#160;thousands)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 16%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="16%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;December&amp;#160;31,&amp;#160;2011&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 16%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="16%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;March&amp;#160;31,&amp;#160;2012&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 62%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="62%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 16%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="16%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 16%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="16%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 62%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="62%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Accounts receivable, billed&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="14%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;4,478&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="14%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;2,123&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 62%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="62%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Accounts receivable, unbilled&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="16%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;2,925&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="16%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;3,827&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 62%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="62%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Deferred revenue&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="16%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;84,466&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="16%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;87,847&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="464"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="19"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="10"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="110"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="19"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="10"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="110"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="7"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;PharmaEngine,&amp;#160;Inc.&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;On May&amp;#160;5, 2011, the Company entered into an assignment, sublicense and collaboration agreement with PharmaEngine,&amp;#160;Inc. (&amp;#8220;PharmaEngine&amp;#8221;) under which the Company reacquired rights in Europe and certain countries in Asia to a drug being developed under the name MM-398. In exchange, the Company agreed to pay PharmaEngine a nonrefundable, noncreditable upfront payment of $10.0 million and will be required to make up to an aggregate of $80.0 million in development and regulatory milestone payments and $130.0 million in sales milestone payments upon the achievement of specified development, regulatory and annual net sales milestones. During the first quarter of 2012, the Company paid a milestone of $5.0 million under the collaboration agreement with PharmaEngine in connection with dosing the first patient in a Phase 3 clinical trial of MM-398 in pancreatic cancer. PharmaEngine is also entitled to tiered royalties on net sales of MM-398 in Europe and certain countries in Asia. The Company is responsible for all future development costs of MM-398 except those required specifically for regulatory approval in Taiwan. The Company determined that PharmaEngine is a variable interest entity based on an analysis of PharmaEngine&amp;#8217;s capitalization. However, the Company determined that the Company cannot control the activities of PharmaEngine, and therefore, the Company is not the primary beneficiary and should not consolidate the financial results of PharmaEngine.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;During the three months ended March&amp;#160;31, 2012, the Company recognized research and development expenses of $5.3 million related to the agreement with PharmaEngine, which consisted of the $5.0 million milestone payment and $0.3 million of research and development reimbursement.&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</us-gaap:CollaborativeArrangementDisclosureTextBlock>
  <us-gaap:FairValueDisclosuresTextBlock contextRef="D2012Q1">&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;6.&amp;#160; Fair Value of Financial Instruments&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The carrying amounts of cash and cash equivalents, prepaid expenses, accounts receivable, accounts payable and accrued expenses and other short-term assets and liabilities approximate fair value due to the short-term nature of these instruments. The capital lease obligations and convertible preferred stock warrants are also carried at fair value.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Fair value is an exit price, representing the amount that would be received from the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value is determined based on observable and unobservable inputs. Observable inputs reflect readily obtainable data from independent sources, while unobservable inputs reflect certain market assumptions. As a basis for considering such assumptions, GAAP establishes a three-tier value hierarchy, which prioritizes the inputs used to develop the assumptions and for measuring fair value as follows: (Level 1) observable inputs such as quoted prices in active markets for identical assets; (Level 2) inputs other than the quoted prices in active markets that are observable either directly or indirectly; and (Level 3) unobservable inputs in which there is little or no market data, which requires the Company to develop its own assumptions. This hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The following tables show assets and liabilities measured at fair value on a recurring basis as of December&amp;#160;31, 2011 and March&amp;#160;31, 2012 and the input categories associated with those assets and liabilities:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 100%; BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="55%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;As&amp;#160;of&amp;#160;December&amp;#160;31,&amp;#160;2011&lt;br /&gt;
(in&amp;#160;thousands)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Level&amp;#160;1&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Level&amp;#160;2&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Level&amp;#160;3&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Assets&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="top" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Cash equivalents &amp;#8212; Money Markets&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;35,076&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Liabilities&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="top" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Convertible preferred stock warrants&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1,516&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="415"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="19"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="10"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="80"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="19"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="10"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="80"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="19"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="10"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="80"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="7"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 100%; BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="55%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;As&amp;#160;of&amp;#160;March&amp;#160;31,&amp;#160;2012&lt;br /&gt;
(in&amp;#160;thousands)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Level&amp;#160;1&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Level&amp;#160;2&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Level&amp;#160;3&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Assets&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="top" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Cash equivalents &amp;#8212; Money Markets&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;3,636&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Liabilities&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="top" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Convertible preferred stock warrants&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;957&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="415"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="19"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="10"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="80"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="19"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="90"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="19"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="90"&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none" width="7"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company&amp;#8217;s investment portfolio consists of investments classified as cash equivalents. All highly liquid investments with an original maturity of three months or less when purchased are considered to be cash equivalents. The Company&amp;#8217;s cash and cash equivalents are invested in a U.S. treasury and federal agency-backed money market fund that approximates its face value. The fair value of the convertible preferred stock warrants as of December&amp;#160;31, 2011 and March&amp;#160;31, 2012 was determined using the Black-Scholes option valuation model.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The following table provides a roll-forward of the fair value of the convertible preferred stock warrants categorized as Level 3 instruments, for the three months ended March&amp;#160;31, 2011 and 2012:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 80%; BORDER-COLLAPSE: collapse; MARGIN-LEFT: 0.75in" border="0" cellspacing="0" cellpadding="0" width="80%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.58%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="76%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;(in&amp;#160;thousands)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.42%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="3%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 18.76%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="18%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Convertible&lt;br /&gt;
preferred&lt;br /&gt;
stock&amp;#160;warrants&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.24%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.58%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="76%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.42%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="3%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 18.76%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="18%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.24%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.58%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="76%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Balance, December&amp;#160;31, 2010&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.42%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="3%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.58%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 17.18%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="17%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;652&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.24%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.58%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="76%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Unrealized loss included in other income (expense)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.42%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="3%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 18.76%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="18%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;716&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.24%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.58%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="76%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.42%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="3%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 18.76%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="18%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.24%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.58%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="76%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Balance, March&amp;#160;31, 2011&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.42%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="3%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.58%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 17.18%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="17%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1,368&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.24%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 80%; BORDER-COLLAPSE: collapse; MARGIN-LEFT: 0.75in" border="0" cellspacing="0" cellpadding="0" width="80%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.78%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="76%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;(in&amp;#160;thousands)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.22%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="3%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 18.74%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="18%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Convertible&lt;br /&gt;
preferred&lt;br /&gt;
stock&amp;#160;warrants&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.26%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.78%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="76%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.22%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="3%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 18.74%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="18%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.26%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.78%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="76%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Balance, December&amp;#160;31, 2011&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.22%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="3%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.56%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 17.18%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="17%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1,516&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.26%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.78%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="76%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Unrealized gain included in other income (expense)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.22%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="3%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 18.74%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="18%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(559&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0.375pt; PADDING-LEFT: 0in; WIDTH: 1.26%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.78%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="76%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.22%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="3%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 18.74%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="18%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.26%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 76.78%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="76%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Balance, March&amp;#160;31, 2012&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 3.22%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="3%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.56%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 17.18%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="17%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;957&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</us-gaap:FairValueDisclosuresTextBlock>
  <us-gaap:StockholdersEquityNoteDisclosureTextBlock contextRef="D2012Q1">&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;8.&amp;#160; Common Stock&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;During the first quarter of 2012, the Company amended its certificate of incorporation to increase the number of authorized shares of common stock to 200.0 million. As of December&amp;#160;31, 2011 and March&amp;#160;31, 2012, the Company had 138.5 million shares and 200.0 million shares, respectively, of common stock, $0.01 par value per share, authorized.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;There were 11,834,000 and 11,907,000 shares of common stock issued and outstanding as of December&amp;#160;31, 2011 and March&amp;#160;31, 2012, respectively. The shares reserved for future issuance as of December&amp;#160;31, 2011 and March&amp;#160;31, 2012 consisted of the following:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 100%; BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;(in&amp;#160;thousands)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;December&amp;#160;&lt;br /&gt;
31,&amp;#160;2011&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;March&amp;#160;&lt;br /&gt;
31,&amp;#160;2012&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Conversion of Series&amp;#160;B, Series&amp;#160;C, Series&amp;#160;D, Series&amp;#160;E, Series&amp;#160;F and Series&amp;#160;G convertible preferred stock&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;66,256&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;66,256&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Convertible preferred stock warrants&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;302&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;302&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Common stock warrants&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;2,640&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;2,631&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1999 Stock Option Plan and 2008 Stock Incentive Plan&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;17,617&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;17,515&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;86,815&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;86,704&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;As discussed in Note 3, in April&amp;#160;2012, the Company closed the initial public offering of its common stock pursuant to a registration statement on Form&amp;#160;S-1, as amended. The Company sold an aggregate of 15,042,459 shares of common stock under the registration statement at a public offering price of $7.00 per share, including 742,459 shares pursuant to the exercise by the underwriters of an over-allotment option. Upon closing, all outstanding shares of the Company&amp;#8217;s convertible preferred stock were converted into 66,255,529 shares of common stock.&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</us-gaap:StockholdersEquityNoteDisclosureTextBlock>
  <us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock contextRef="D2012Q1">&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;9.&amp;#160; Stock-Based Compensation&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;During the three months ended March&amp;#160;31, 2011 and 2012, the Company did not issue options to purchase shares of common stock.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;As of December&amp;#160;31, 2011 and March&amp;#160;31, 2012, there were 830,000 and 866,111 shares of common stock, respectively, available to be issued under the 2008 Stock Incentive Plan, as amended (the &amp;#8220;2008 Plan&amp;#8221;).&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The 2011 Stock Incentive Plan (the &amp;#8220;2011 Plan&amp;#8221;) became effective upon closing of the Company&amp;#8217;s initial public offering in April&amp;#160;2012. Upon effectiveness of the 2011 Plan, no further awards were available to be issued under the 2008 Plan. The 2011 Plan is administered by the Board of Directors of the Company and permits the Company to grant incentive and non-qualified stock options, stock appreciation rights, restricted stock, restricted stock units and other stock-based awards. The 2011 Plan increases the total number of shares of common stock available to be issued by 3.5 million.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company recognized stock-based compensation expense as follows for the three months ended March&amp;#160;31, 2011 and 2012:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 100%; BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 26.5%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="26%" colspan="5"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Three&amp;#160;months&amp;#160;ended&amp;#160;March&amp;#160;31,&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;(in&amp;#160;thousands)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;2011&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;2012&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Employee awards:&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Research and development&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;700&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;909&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="top" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 20pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;General and administrative&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;273&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;430&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="top" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 30pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Stock-based compensation for employee awards&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;973&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1,339&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Stock-based compensation for nonemployee awards&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;47&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 70%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="top" width="70%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 40pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Total stock-based compensation&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1,020&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1,339&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The following table summarizes stock option activity during the three months ended March&amp;#160;31, 2012:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 100%; BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="55%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;(in&amp;#160;thousands,&amp;#160;except&amp;#160;per&amp;#160;share&amp;#160;amounts)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Number&amp;#160;of&lt;br /&gt;
shares&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Weighted&lt;br /&gt;
average&lt;br /&gt;
exercise&amp;#160;price&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Aggregate&lt;br /&gt;
intrinsic&lt;br /&gt;
value&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Outstanding, December&amp;#160;31, 2011&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;17,617&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;2.56&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;74,329&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Exercised&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(66&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;2.24&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Forfeited&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(36&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0.375pt; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;3.37&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Outstanding, March&amp;#160;31, 2012&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;17,515&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;2.56&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;63,769&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Exercisable, March&amp;#160;31, 2012&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;14,171&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;2.23&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;56,177&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 55.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="55%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Vested and expected to vest, March&amp;#160;31, 2012&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;17,339&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;2.54&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="10%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;63,485&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The aggregate intrinsic value was calculated as the difference between the exercise price of the stock options and the fair value of the underlying common stock as of the respective balance sheet date.&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock>
  <us-gaap:CommitmentsAndContingenciesDisclosureTextBlock contextRef="D2012Q1">&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;10.&amp;#160; Commitments and Contingencies&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Operating leases&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company leases its office, laboratory and manufacturing space under non-cancellable operating leases. Total rent expense under these operating leases was $700,000 and $893,000 for the three months ended March&amp;#160;31, 2011 and 2012, respectively.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;During the first quarter of 2012, the Company entered into a lease amendment to further expand its office, laboratory and manufacturing space. The amendment leases additional space for a seven year term effective March&amp;#160;2012. The aggregate rent due over the seven year term of the lease amendment is approximately $2.7 million. As part of this agreement, the landlord agreed to reimburse the Company for a portion of tenant improvements made to the facility, up to a total of $464,000. Tenant improvements are recorded in deferred lease benefits on the accompanying condensed consolidated balance sheets and amortized over the term of the lease as reductions to rent expense.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;During the first quarter of 2012, the Company completed tenant improvements to the leased facility and recorded a related receivable from the landlord of $329,000 in prepaid expenses and other assets on the accompanying condensed consolidated balance sheets as of March&amp;#160;31, 2012.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Contingencies&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;i&gt;&lt;font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Contractual matter&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company manufactures MM-121 under a license and collaboration agreement with Sanofi. Under this agreement, Sanofi reimburses the Company for direct costs incurred in manufacturing. During 2009 and 2010, the Company utilized a third party contractor to perform fill-finish manufacturing services. This third party contractor experienced U.S. Food and Drug Administration (&amp;#8220;FDA&amp;#8221;) inspection issues with its quality control process that resulted in a formal warning letter from the FDA. Following a review by Sanofi and the Company, some MM-121 was pulled from clinical trial sites and replaced with MM-121 that was filled by a different contractor.&amp;#160; Sanofi had requested that the Company assume financial responsibility for the MM-121 material that was pulled from clinical trial sites. The Company and Sanofi have since agreed that, during 2012 and 2013, the Company will reimburse Sanofi approximately $1.2 million of previously billed amounts. The Company has recorded a contractual liability of $1.2 million in accrued expenses and other on the accompanying condensed consolidated balance sheets as of March&amp;#160;31, 2012. The Company&amp;#8217;s revenue recognition model for manufacturing services performed under the license and collaboration agreement with Sanofi is to recognize these services over the period of performance, which is currently estimated to be 12 years from the effective date of the agreement. Removal of these previously billed amounts from the revenue recognition model and establishing this contractual liability resulted in an earnings reduction of $0.2 million for the three months ended March&amp;#160;31, 2012 in the accompanying condensed consolidated statement of operations.&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</us-gaap:CommitmentsAndContingenciesDisclosureTextBlock>
  <us-gaap:RelatedPartyTransactionsDisclosureTextBlock contextRef="D2012Q1">&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;11.&amp;#160; Related Party Transactions&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;In connection with the initial public offering of the Company&amp;#8217;s common stock, Sanofi purchased 5,217,391 shares of the Company&amp;#8217;s common stock in April&amp;#160;2012.&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</us-gaap:RelatedPartyTransactionsDisclosureTextBlock>
  <mack:InitialPublicOfferingDisclosureTextBlock contextRef="D2012Q1">&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;3.&amp;#160; Initial Public Offering&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;In April&amp;#160;2012, the Company closed the initial public offering of its common stock pursuant to a registration statement on Form&amp;#160;S-1, as amended. The Company sold an aggregate of 15,042,459 shares of common stock under the registration statement at a public offering price of $7.00 per share, including 742,459 shares pursuant to the exercise by the underwriters of an over-allotment option. Net proceeds were approximately $100.5 million, after deducting underwriting discounts and commissions but prior to the payment of remaining offering expenses payable by the Company and accrued dividends on the Company&amp;#8217;s Series&amp;#160;B convertible preferred stock.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Upon closing the initial public offering, all outstanding shares of the Company&amp;#8217;s convertible preferred stock were converted into 66,255,529 shares of common stock, all outstanding warrants to purchase shares of convertible preferred stock were converted into warrants to purchase shares of common stock and approximately $4.3 million of cash dividends became payable to the holders of Series&amp;#160;B convertible preferred stock.&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</mack:InitialPublicOfferingDisclosureTextBlock>
  <us-gaap:NetIncomeLoss decimals="-3" contextRef="D2012Q1" unitRef="USD">-23284000</us-gaap:NetIncomeLoss>
  <us-gaap:NetIncomeLoss decimals="-3" contextRef="D2011Q1" unitRef="USD">-13457000</us-gaap:NetIncomeLoss>
  <mack:NoncontrollingInterestEquityPreferredFairValue decimals="-3" contextRef="I2011" unitRef="USD">574000</mack:NoncontrollingInterestEquityPreferredFairValue>
  <mack:NoncontrollingInterestEquityPreferredFairValue decimals="-3" contextRef="I2012Q1" unitRef="USD">456000</mack:NoncontrollingInterestEquityPreferredFairValue>
  <mack:GainLossOnMarkToMarketOnPreferredStockWarrants decimals="-3" contextRef="D2011Q1" unitRef="USD">-716000</mack:GainLossOnMarkToMarketOnPreferredStockWarrants>
  <mack:GainLossOnMarkToMarketOnPreferredStockWarrants decimals="-3" contextRef="D2012Q1" unitRef="USD">559000</mack:GainLossOnMarkToMarketOnPreferredStockWarrants>
  <us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities decimals="-3" contextRef="D2011Q1" unitRef="USD">219000</us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities>
  <us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities decimals="-3" contextRef="D2012Q1" unitRef="USD">-299000</us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities>
  <us-gaap:PaymentsOfStockIssuanceCosts decimals="-3" contextRef="D2012Q1" unitRef="USD">180000</us-gaap:PaymentsOfStockIssuanceCosts>
  <mack:StockIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction decimals="-3" contextRef="D2012Q1" unitRef="USD">505000</mack:StockIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction>
  <us-gaap:NatureOfOperations contextRef="D2012Q1">&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;1.&amp;#160; Nature of the Business&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Merrimack Pharmaceuticals,&amp;#160;Inc. (the &amp;#8220;Company&amp;#8221;) is a biopharmaceutical company discovering, developing and preparing to commercialize innovative medicines consisting of novel therapeutics paired with companion diagnostics. The Company has five targeted therapeutic oncology candidates in clinical development (MM-398, MM-121, MM-111, MM-302 and MM-151), multiple product candidates in preclinical development and a discovery effort advancing additional candidate medicines. The Company uses its interdisciplinary Network Biology approach in drug discovery and development. The Company is incorporated in the State of Delaware.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company is subject to risks and uncertainties common to companies in the biopharmaceutical industry, including, but not limited to, its ability to secure additional capital to fund operations, development by competitors of new technological innovations, dependence on collaborative arrangements, protection of proprietary technology, compliance with government regulations and dependence on key personnel. Product candidates currently under development will require significant additional research and development efforts, including extensive preclinical and clinical testing and regulatory approval prior to commercialization. These efforts require significant amounts of additional capital, adequate personnel infrastructure and extensive compliance reporting capabilities.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The accompanying condensed consolidated financial statements have been prepared on a basis which assumes that the Company will continue as a going concern and which contemplates the realization of assets and satisfaction of liabilities and commitments in the normal course of business. However, the Company has incurred significant losses and does not have commercial operations underway. As of March&amp;#160;31, 2012, the Company had cash and cash equivalents of $30,555,000. In April&amp;#160;2012, the Company closed the initial public offering of its common stock pursuant to a registration statement on Form&amp;#160;S-1, as amended. The Company sold an aggregate of 15,042,459 shares of common stock under the registration statement at a public offering price of $7.00 per share, including 742,459 shares pursuant to the exercise by the underwriters of an over-allotment option. Net proceeds were approximately $100.5 million, after deducting underwriting discounts and commissions but prior to the payment of remaining offering expenses payable by the Company and accrued dividends on the Company&amp;#8217;s Series&amp;#160;B convertible preferred stock. The Company expects its existing cash and cash equivalents on hand as of March&amp;#160;31, 2012, together with the net proceeds from the initial public offering, to be sufficient to fund operations into the second half of 2013.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 62pt; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company may seek additional funding through public or private financings, or through existing or new collaboration arrangements. The Company may not be able to obtain financing on acceptable terms, or at all, and the Company may not be able to enter into additional collaborative arrangements. The terms of any financing may adversely affect the holdings or the rights of the Company&amp;#8217;s stockholders. Arrangements with collaborators or others may require the Company to relinquish rights to certain of its technologies or product candidates. If the Company is unable to obtain funding, the Company could be forced to delay, reduce or eliminate its research and development programs or commercialization efforts, which could adversely affect its business prospects.&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</us-gaap:NatureOfOperations>
  <us-gaap:OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock contextRef="D2012Q1">&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;2.&amp;#160; Summary of Significant Accounting Policies&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Significant accounting policies followed by the Company in the preparation of its condensed consolidated financial statements are as follows:&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Basis of Presentation&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The accompanying condensed consolidated financial statements as of March&amp;#160;31, 2012, and for the three months ended March&amp;#160;31, 2011 and 2012, have been prepared in accordance with the rules&amp;#160;and regulations of the Securities and Exchange Commission (the &amp;#8220;SEC&amp;#8221;) and generally accepted accounting principles in the United States of America (&amp;#8220;GAAP&amp;#8221;) for condensed consolidated financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, these condensed consolidated financial statements reflect all adjustments which are necessary for a fair statement of the Company&amp;#8217;s financial position and results of its operations, as of and for the periods presented. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company&amp;#8217;s Current Report on Form&amp;#160;8-K filed with the SEC on April&amp;#160;27, 2012.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The information presented in the condensed consolidated financial statements and related notes as of March&amp;#160;31, 2012, and for the three months ended March&amp;#160;31, 2011 and 2012, is unaudited. The December&amp;#160;31, 2011 condensed consolidated balance sheet included herein was derived from the audited financial statements as of that date, but does not include all disclosures, including notes, required by GAAP for complete financial statements.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Interim results for the three months ended March&amp;#160;31, 2012 are not necessarily indicative of the results that may be expected for the fiscal year ending December&amp;#160;31, 2012, or any future period.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Principles of Consolidation&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;These condensed consolidated financial statements include the accounts of the Company, its wholly owned subsidiary Hermes BioSciences,&amp;#160;Inc., which was merged with and into the Company during 2011, its wholly owned subsidiary Merrimack Pharmaceuticals (Bermuda) Ltd., which was incorporated during 2011, and its 74% majority owned subsidiary Silver Creek Pharmaceuticals,&amp;#160;Inc. (&amp;#8220;Silver Creek&amp;#8221;). All intercompany transactions and balances have been eliminated in consolidation.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;There were no changes to the Company&amp;#8217;s ownership of Silver Creek during the three months ended March&amp;#160;31, 2011 and 2012. The Company&amp;#8217;s consolidated financial statement activity related to Silver Creek during these periods is as follows:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 86.68%; BORDER-COLLAPSE: collapse; MARGIN-LEFT: 0.5in" border="0" cellspacing="0" cellpadding="0" width="86%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 75.18%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="75%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;(in&amp;#160;thousands)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 20.76%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="20%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Non-Controlling&amp;#160;Interest&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 75.18%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="top" width="75%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Balance at December&amp;#160;31, 2010&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 19.46%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="19%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1,027&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 75.18%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="top" width="75%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Net loss attributable to Silver Creek &lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 20.76%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="20%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(78&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0.375pt; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 75.18%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="top" width="75%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Balance at March&amp;#160;31, 2011&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 19.46%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="19%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;949&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 86.68%; BORDER-COLLAPSE: collapse; MARGIN-LEFT: 0.5in" border="0" cellspacing="0" cellpadding="0" width="86%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 75.18%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="75%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 20.76%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="20%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;Non-Controlling&amp;#160;Interest&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 75.18%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="top" width="75%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Balance at December&amp;#160;31, 2011&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 19.46%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="19%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;574&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 75.18%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="top" width="75%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Net loss attributable to Silver Creek &lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 20.76%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="20%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;(118&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0.375pt; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 75.18%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="top" width="75%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Balance at March&amp;#160;31, 2012&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 19.46%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="19%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;456&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Use of estimates&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;GAAP requires the Company&amp;#8217;s management to make estimates and judgments that may affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures. The Company bases estimates and judgments on historical experience and on various other factors that it believes to be reasonable under the circumstances. The significant estimates in these condensed consolidated financial statements include revenue recognition, useful lives with respect to long-lived assets and intangibles, valuation of stock options, convertible preferred stock warrants, contingencies, accrued expenses, intangible assets, goodwill, in-process research and development and tax valuation reserves. The Company&amp;#8217;s actual results may differ from these estimates under different assumptions or conditions. The Company evaluates its estimates on an ongoing basis. Changes in estimates are reflected in reported results in the period in which they become known by the Company&amp;#8217;s management.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Cash, Cash Equivalents and Restricted Cash&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 40.5pt; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Cash and cash equivalents are short-term, highly liquid investments with an original maturity of three months or less at the date of purchase. Investments qualifying as cash equivalents primarily consist of money market funds.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 40.5pt; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 40.5pt; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Cash accounts with any type of restriction are classified as restricted cash. If restrictions are expected to be lifted in the next twelve months, the restricted cash account is classified as current. As of December&amp;#160;31, 2011 and March&amp;#160;31, 2012, the Company recorded restricted cash of $381,000 and $481,000, respectively.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 40.5pt; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Revenue Recognition&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company enters into biopharmaceutical product development agreements with collaborative partners for the research and development of therapeutic and diagnostic products. The terms of the agreements may include nonrefundable signing and licensing fees, funding for research, development and manufacturing, milestone payments and royalties on any product sales derived from collaborations. These multiple element arrangements are analyzed to determine whether the deliverables can be separated or whether they must be accounted for as a single unit of accounting.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;In January&amp;#160;2011, the Company adopted new authoritative guidance on revenue recognition for multiple element arrangements. This guidance, which applies to multiple element arrangements entered into or materially modified on or after January&amp;#160;1, 2011, amends the criteria for separating and allocating consideration in a multiple element arrangement by modifying the fair value requirements for revenue recognition and eliminating the use of the residual method. The fair value of deliverables under the arrangement may be derived using a best estimate of selling price if vendor specific objective evidence and third-party evidence are not available. Deliverables under the arrangement will be separate units of accounting provided that a delivered item has value to the customer on a stand-alone basis and if the arrangement does not include a general right of return relative to the delivered item and delivery or performance of the undelivered item is considered probable and substantially in the control of the vendor. The Company also adopted guidance that permits the recognition of revenue contingent upon the achievement of a milestone in its entirety, in the period in which the milestone is achieved, only if the milestone meets certain criteria and is considered to be substantive. The Company did not enter into any significant multiple element arrangements or materially modify any of its existing multiple element arrangements during the year ended December&amp;#160;31, 2011 or the three months ended March&amp;#160;31, 2012. The Company&amp;#8217;s existing license and collaboration agreements continue to be accounted for under previously issued revenue recognition guidance for multiple element arrangements and milestone revenue recognition, as described below.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company recognized upfront license payments as revenue upon delivery of the license only if the license had stand-alone value and the fair value of the undelivered performance obligations could be determined. If the fair value of the undelivered performance obligations could be determined, such obligations were accounted for separately as the obligations were fulfilled. If the license was considered to either not have stand-alone value or have stand-alone value but the fair value of any of the undelivered performance obligations could not be determined, the arrangement was accounted for as a single unit of accounting and the license payments and payments for performance obligations were recognized as revenue over the estimated period of when the performance obligations would be performed.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Whenever the Company determined that an arrangement should be accounted for as a single unit of accounting, it determined the period over which the performance obligations would be performed and revenue would be recognized. If the Company could not reasonably estimate the timing and the level of effort to complete its performance obligations under the arrangement, then revenue under the arrangement was recognized on a straight-line basis over the period the Company expected to complete its performance obligations, which is reassessed at each subsequent reporting period.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company&amp;#8217;s collaboration agreements may include additional payments upon the achievement of performance-based milestones. As milestones are achieved, a portion of the milestone payment, equal to the percentage of the total time that the Company has performed the performance obligations to date over the total estimated time to complete the performance obligations, multiplied by the amount of the milestone payment, will be recognized as revenue upon achievement of such milestone. The remaining portion of the milestone will be recognized over the remaining performance period. Milestones that are tied to regulatory approval are not considered probable of being achieved until such approval is received. Milestones tied to counter-party performance are not included in the Company&amp;#8217;s revenue model until the performance conditions are met.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Royalty revenue will be recognized upon the sale of the related products provided the Company has no remaining performance obligations under the arrangement.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Convertible Preferred Stock and Convertible Preferred Stock Warrants&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Convertible preferred stock is initially recorded at the proceeds received, net of issuance costs and warrants, where applicable. There was no activity related to the convertible preferred stock for the three months ended March&amp;#160;31, 2012. However, as described in Note 3, in April&amp;#160;2012, the Company closed the initial public offering of its common stock. Upon closing, all outstanding shares of the Company&amp;#8217;s convertible preferred stock were converted into 66,255,529 shares of common stock.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company accounts for freestanding warrants as liabilities at their fair value. The Company measures the fair value of the convertible preferred stock warrants at the end of each reporting period and records the change in fair value to other income (expense). For the three months ended March&amp;#160;31, 2011 and 2012, the Company recorded other income (expense) related to this re-measurement of $(716,000) and $559,000, respectively. However, as described in Note 3, in April&amp;#160;2012, the Company closed the initial public offering of its common stock. Upon closing, all outstanding warrants to purchase shares of convertible preferred stock were converted into warrants to purchase shares of common stock.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Other Income (Expense)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company records gains and losses on the change in value and time to expiration of convertible preferred stock warrants, the recognition of federal and state sponsored tax incentives and other one-time income or expense-related items in other income (expense) on the Company&amp;#8217;s condensed consolidated statement of operations. Other income for the three months ended March&amp;#160;31, 2011 included a cash settlement of $1.8 million from a former service provider.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;Deferred Financing Costs&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;The Company capitalizes certain legal, accounting and other fees that are directly associated with in-process equity financings as current assets until such financings occur. After occurrence, these costs are recorded in equity, in the case of a common stock financing, or mezzanine equity, in the case of a convertible preferred stock financing, net of proceeds received.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;As of December&amp;#160;31, 2011 and March&amp;#160;31, 2012, the Company recorded deferred financing costs of $1,946,000 and $2,631,000, respectively, on the accompanying condensed consolidated balance sheet in contemplation of an initial public offering. As discussed in Note 3, in April&amp;#160;2012, the Company closed the initial public offering of its common stock. Upon closing, these deferred financing costs were netted against the equity proceeds within stockholders&amp;#8217; equity (deficit).&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</us-gaap:OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock>
  <mack:AccruedAndOtherCurrentLiabilitiesDisclosureTextBlock contextRef="D2012Q1">&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2"&gt;7.&amp;#160; Accrued Expenses and other&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Accrued expenses and other as of December&amp;#160;31, 2011 and March&amp;#160;31, 2012 consisted of the following:&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;table style="WIDTH: 100%; BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 66%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="66%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;(in&amp;#160;thousands)&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="14%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;December&amp;#160;31,&amp;#160;2011&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="14%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt; FONT-WEIGHT: bold" size="1"&gt;March&amp;#160;31,&amp;#160;2012&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt" align="center"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt; FONT-WEIGHT: bold" size="1"&gt;&amp;#160;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 66%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="66%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="14%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="14%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 66%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="66%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Goods and services&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;9,189&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;8,457&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 66%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="66%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Payroll and related benefits&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="14%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;3,666&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="14%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;3,382&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 66%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="66%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Contractual liability&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="14%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="14%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;1,222&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 66%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="66%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="14%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 14%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in" valign="bottom" width="14%" colspan="2"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; PADDING-TOP: 0in" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px"&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 66%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="top" width="66%"&gt;
&lt;p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;Total accrued expenses and other &lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;12,855&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.5%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="2%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.3%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;$&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 12.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="12%"&gt;
&lt;p style="TEXT-ALIGN: right; MARGIN: 0in 0in 0pt" align="right"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;13,061&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in" bgcolor="#CCEEFF" valign="bottom" width="1%"&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 1pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;&amp;#160;&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"&gt;As described in Note 10, the Company has recorded a contractual liability of $1.2 million related to a contractual matter with Sanofi.&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</mack:AccruedAndOtherCurrentLiabilitiesDisclosureTextBlock>
  <us-gaap:PaymentsForProceedsFromOtherInvestingActivities decimals="-3" contextRef="D2012Q1" unitRef="USD">100000</us-gaap:PaymentsForProceedsFromOtherInvestingActivities>
  <us-gaap:OtherLiabilitiesCurrent decimals="-3" contextRef="I2011" unitRef="USD">12855000</us-gaap:OtherLiabilitiesCurrent>
  <us-gaap:OtherLiabilitiesCurrent decimals="-3" contextRef="I2012Q1" unitRef="USD">13061000</us-gaap:OtherLiabilitiesCurrent>
  <us-gaap:EarningsPerShareBasic decimals="2" contextRef="D2011Q1" unitRef="USDPerShare">-1.35</us-gaap:EarningsPerShareBasic>
  <us-gaap:EarningsPerShareBasic decimals="2" contextRef="D2012Q1" unitRef="USDPerShare">-2.14</us-gaap:EarningsPerShareBasic>
  <us-gaap:EarningsPerShareDiluted decimals="2" contextRef="D2011Q1" unitRef="USDPerShare">-1.35</us-gaap:EarningsPerShareDiluted>
  <us-gaap:EarningsPerShareDiluted decimals="2" contextRef="D2012Q1" unitRef="USDPerShare">-2.14</us-gaap:EarningsPerShareDiluted>
</xbrli:xbrl>