2.4.0.8121 - Disclosure - Basis of Presentation (Tables)truefalsefalse1false falsefalseeol_PE71016---1310-Q0006_STD_181_20130630_0http://www.sec.gov/CIK0001103021duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_AccountingPoliciesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Accounting Policies [Abstract]2false 2us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div> The following table summarizes assets and liabilities measured at fair value on a recurring basis at June 30, 2013 and December 31, 2012, respectively:   <table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr> <td width="48%"></td> <td valign="bottom" width="2%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="2%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="2%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="2%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="2%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="2%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="2%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="2%"></td> <td></td> <td></td> <td></td> </tr> <tr> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="14" align="center">June 30, 2013</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="14" align="center">December 31, 2012</td> <td valign="bottom"> </td> </tr> <tr> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">Level 1</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">Level 2</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">Level 3</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">Total</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">Level 1</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">Level 2</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">Level 3</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">Total</td> <td valign="bottom"> </td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> Fair Value Measurements Using: </td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> </tr> <tr> <td valign="top"> Assets </td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> Derivative asset (warrant) </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">50,300</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">50,300</td> <td valign="bottom" nowrap="nowrap">  </td> </tr> <tr> <td valign="top"> Liabilities </td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> </tr> <tr> <td height="8"></td> <td height="8" colspan="4"></td> <td height="8" colspan="4"></td> <td height="8" colspan="4"></td> <td height="8" colspan="4"></td> <td height="8" colspan="4"></td> <td height="8" colspan="4"></td> <td height="8" colspan="4"></td> <td height="8" colspan="4"></td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> Derivative liabilities </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,030,140</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,030,140</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,497,977</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,497,977</td> <td valign="bottom" nowrap="nowrap">  </td> </tr> </table> </div>falsefalsefalsenonnum:textBlockItemTypenaTabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a,b,bb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI http://asc.fasb.org/extlink&oid=25499696&loc=SL7498348-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19279-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 false0Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis3false 2bdsi_ReconciliationOfBeginningAndEndingBalancesOfAssetsAndLiabilitiesMeasuredAtFairValueUsingSignificantObservableInputsTableTextBlockbdsi_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div> The table below provides a reconciliation of the beginning and ending balances for the assets and liabilities measured at fair value using observable inputs (Level 2). The table reflects net gains and losses for all financial assets and liabilities categorized as Level 2 as of June 30, 2013 and December 31, 2012.   <table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr> <td width="73%"></td> <td valign="bottom" width="5%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="5%"></td> <td></td> <td></td> <td></td> </tr> <tr> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center">$</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center">Number of Warrants</td> <td valign="bottom"> </td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> Assets: </td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"> </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> </tr> <tr> <td valign="top"> Warrant asset as of December 31, 2012 </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">50,300</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,000,000</td> <td valign="bottom" nowrap="nowrap">  </td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> Decrease in fair value of warrants (Note 7) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(50,300</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,000,000</td> <td valign="bottom" nowrap="nowrap">) </td> </tr> <tr style="FONT-SIZE: 1px"> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">   </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">   </td> <td> </td> </tr> <tr> <td valign="top"> Warrant asset as of June 30, 2013 </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> </tr> <tr style="FONT-SIZE: 1px"> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">   </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">   </td> <td> </td> </tr> <tr> <td height="8"></td> <td height="8" colspan="4"></td> <td height="8" colspan="4"></td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> Liabilities: </td> <td valign="bottom">  </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"> </td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> </tr> <tr> <td valign="top"> Warrant liability as of December 31, 2012 </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,497,977</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,009,436</td> <td valign="bottom" nowrap="nowrap">  </td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> Decrease in fair value of warrants </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,467,837</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> </tr> <tr style="FONT-SIZE: 1px"> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">   </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">   </td> <td> </td> </tr> <tr> <td valign="top"> Warrant liability as of June 30, 2013 </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,030,140</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,009,436</td> <td valign="bottom" nowrap="nowrap">  </td> </tr> <tr style="FONT-SIZE: 1px"> <td valign="bottom"></td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">   </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">   </td> <td> </td> </tr> </table> </div>falsefalsefalsenonnum:textBlockItemTypenaReconciliation of beginning and ending balances of assets and liabilities measured at fair value using significant observable inputs.No definition available.false0Reconciliation of Beginning and Ending Balances for Assets and Liabilities Measured at 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