2.4.0.80031 - Disclosure - Fair Value Measurements (Tables)truefalsefalse1false falsefalseFrom2012-10-01to2013-06-30http://www.sec.gov/CIK0000357108duration2012-10-01T00:00:002013-06-30T00:00:001true 1us-gaap_FairValueDisclosuresAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Fair Value Disclosures [Abstract]2false 2us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Financial liabilities carried at fair value as of June 30, 2013 on a recurring basis are classified below:     <table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Calibri, Helvetica, Sans-Serif; border-collapse: collapse"> <tr style="vertical-align: bottom"> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="2" style="border-bottom: black 1pt solid; text-align: center; line-height: 115%">Level 1</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="2" style="border-bottom: black 1pt solid; text-align: center; line-height: 115%">Level 2</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="2" style="border-bottom: black 1pt solid; text-align: center; line-height: 115%">Level 3</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="2" style="border-bottom: black 1pt solid; text-align: center; line-height: 115%">Total</td> <td style="line-height: 115%"> </td></tr> <tr style="vertical-align: bottom; background-color: #CCEEFF"> <td style="padding-left: 9pt; text-indent: -9pt; line-height: 115%">Derivative liabilities</td> <td style="line-height: 115%"> </td> <td style="width: 9px; border-bottom: black 2.25pt double; line-height: 115%">$</td> <td style="border-bottom: black 2.25pt double; text-align: right; line-height: 115%">- </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="width: 9px; border-bottom: black 2.25pt double; line-height: 115%">$</td> <td style="border-bottom: black 2.25pt double; text-align: right; line-height: 115%">- </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="width: 9px; border-bottom: black 2.25pt double; line-height: 115%">$</td> <td style="border-bottom: black 2.25pt double; text-align: right; line-height: 115%">14,286,000</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="width: 9px; border-bottom: black 2.25pt double; line-height: 115%">$</td> <td style="border-bottom: black 2.25pt double; text-align: right; line-height: 115%">14,286,000</td> <td style="line-height: 115%"> </td></tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td></tr> </table>  falsefalsefalsenonnum:textBlockItemTypenaTabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=7578670&loc=d3e19190-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 6 -Footnote 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Financial liabilities recurring basis3false 2irsn_ScheduleDerivativeLiabilityChangesirsn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The table below sets forth a summary of changes in the fair value of the Companys Level 3 financial instruments for the nine months ended June 30, 2013:   <table cellspacing="0" cellpadding="0" style="width: 100%; border-collapse: collapse"> <tr style="vertical-align: bottom"> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td colspan="2" style="border-bottom: black 1pt solid">     September 30, 2012</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td colspan="2" style="border-bottom: black 1pt solid"> Recorded New Derivative Liabilities</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td colspan="2" style="border-bottom: black 1pt solid"> Change in estimated fair value recognized in results of operations (gain)/loss</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td colspan="2" style="border-bottom: black 1pt solid"> June 30, 2013</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td></tr> <tr style="vertical-align: bottom; background-color: #CCEEFF"> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif">Derivative liabilities</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td style="width: 9px; font: 10pt/115% Calibri, Helvetica, Sans-Serif">$</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif; text-align: right">19,925,000</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td style="width: 9px; font: 10pt/115% Calibri, Helvetica, Sans-Serif">$</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif; text-align: right">3,246,000</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td style="width: 9px; font: 10pt/115% Calibri, Helvetica, Sans-Serif">$</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif; text-align: right">(8,885,000)</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td> <td style="width: 9px; font: 10pt/115% Calibri, Helvetica, Sans-Serif">$</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif; text-align: right">14,286,000</td> <td style="font: 10pt/115% Calibri, Helvetica, Sans-Serif"> </td></tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td></tr> </table>  falsefalsefalsenonnum:textBlockItemTypenaNo authoritative reference available.No definition available.false0Derivative liability changes4false 2us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Company estimates the fair value of financial instruments that are not required to be carried in the condensed consolidated balance sheet at fair value on either a recurring or non-recurring basis as follows:   <table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Calibri, Helvetica, Sans-Serif; border-collapse: collapse"> <tr style="vertical-align: bottom"> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="6" style="border-bottom: black 1pt solid; text-align: center; line-height: 115%">June 30, 2013</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="6" style="border-bottom: black 1pt solid; text-align: center; line-height: 115%">September 30, 2012</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="2" style="line-height: 115%"> </td> <td style="line-height: 115%"> </td></tr> <tr style="vertical-align: bottom"> <td style="line-height: 115%">(in thousands)</td> <td style="line-height: 115%"> </td> <td colspan="2" style="border-bottom: black 1pt solid; text-align: center; line-height: 115%">Carrying amount</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="2" style="border-bottom: black 1pt solid; text-align: center; line-height: 115%">Fair value</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="3" style="border-bottom: black 1pt solid; text-align: center; line-height: 115%">Carrying amount</td> <td style="line-height: 115%"> </td> <td colspan="2" style="border-bottom: black 1pt solid; text-align: center; line-height: 115%">Fair value</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="2" style="border-bottom: black 1pt solid; text-align: center; line-height: 115%">Level in fair value hierarchy</td> <td style="line-height: 115%"> </td></tr> <tr style="vertical-align: bottom"> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="2" style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="2" style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="3" style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="2" style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td colspan="2" style="line-height: 115%"> </td> <td style="line-height: 115%"> </td></tr> <tr style="vertical-align: bottom; background-color: #CCEEFF"> <td style="width: 42%; line-height: 115%">Cash and cash equivalents</td> <td style="width: 1%; line-height: 115%"> </td> <td style="width: 1%; line-height: 115%">$</td> <td style="width: 9%; text-align: right; line-height: 115%">146,000</td> <td style="width: 1%; line-height: 115%"> </td> <td style="width: 1%; line-height: 115%"> </td> <td style="width: 1%; line-height: 115%">$</td> <td style="width: 8%; text-align: right; line-height: 115%">146,000</td> <td style="width: 1%; line-height: 115%"> </td> <td style="width: 1%; line-height: 115%"> </td> <td style="width: 1%; line-height: 115%">$</td> <td style="width: 9%; text-align: right; line-height: 115%">1,738,000</td> <td style="width: 1%; line-height: 115%"> </td> <td style="width: 1%; line-height: 115%"> </td> <td style="width: 1%; line-height: 115%">$</td> <td style="width: 8%; text-align: right; line-height: 115%">1,738,000</td> <td style="width: 1%; line-height: 115%"> </td> <td style="width: 1%; line-height: 115%"> </td> <td style="width: 1%; line-height: 115%"> </td> <td style="width: 9%; text-align: right; line-height: 115%">1</td> <td style="width: 1%; line-height: 115%"> </td></tr> <tr style="vertical-align: bottom; background-color: white"> <td style="line-height: 115%">Accounts Receivable, net</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%">$</td> <td style="text-align: right; line-height: 115%">127,000</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%">$</td> <td style="text-align: right; line-height: 115%">127,000</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%">$</td> <td style="text-align: right; line-height: 115%">-</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%">$</td> <td style="text-align: right; line-height: 115%">-</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="text-align: right; line-height: 115%">2</td> <td style="line-height: 115%"> </td></tr> <tr style="vertical-align: bottom; background-color: #CCEEFF"> <td style="line-height: 115%">Accounts Payable</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%">$</td> <td style="text-align: right; line-height: 115%">1,498,000</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%">$</td> <td style="text-align: right; line-height: 115%">1,498,000</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%">$</td> <td style="text-align: right; line-height: 115%">604,000</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%">$</td> <td style="text-align: right; line-height: 115%">604,000</td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="line-height: 115%"> </td> <td style="text-align: right; line-height: 115%">2</td> <td style="line-height: 115%"> </td></tr> </table>  falsefalsefalsenonnum:textBlockItemTypenaTabular disclosure related to assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a recurring and/or nonrecurring basis in periods after initial recognition. Disclosures include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3) as well as transfers between levels 1 and 2.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=7578670&loc=d3e19279-110258 Reference 3: 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=7578670&loc=d3e19190-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 6 -Footnote 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: 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=7578670&loc=d3e19207-110258 Reference 6: 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=7578670&loc=SL7498348-110258 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 33 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Fair Value Measurements, Recurring and NonrecurringfalseFair Value Measurements (Tables)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://irvine-sensors.com/role/FairValueMeasurementsTables14