XML 26 R18.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Summary of Significant Accounting Policies (Details 3) (USD $) |  |  | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2014 item | Sep. 30, 2013 | Mar. 31, 2014 Net sales Major Customers item | Mar. 31, 2013 Net sales Major Customers item | Mar. 31, 2014 Net sales Major Customers item | Mar. 31, 2013 Net sales Major Customers item | Mar. 31, 2014 Net sales Major Customers Pilatus | Mar. 31, 2014 Net sales Major Customers Pilatus | Mar. 31, 2014 Net sales Major Customers DoD | Mar. 31, 2014 Net sales Major Customers FedEx | Mar. 31, 2013 Net sales Major Customers FedEx | Mar. 31, 2014 Net sales Major Customers FedEx | Mar. 31, 2014 Net sales Major Customers Kanematsu Aerospace Corp. | Mar. 31, 2013 Net sales Major Customers Eclipse | Mar. 31, 2014 Net sales Major Customers Eclipse | Mar. 31, 2013 Net sales Major Customers Eclipse | Mar. 31, 2013 Net sales Major Customers American | Mar. 31, 2013 Net sales Major Customers American | Mar. 31, 2013 Net sales Major Customers L3 Communications | Mar. 31, 2014 Inventory purchases Major Suppliers item | Mar. 31, 2013 Inventory purchases Major Suppliers item | Mar. 31, 2014 Inventory purchases Major Suppliers item | Mar. 31, 2013 Inventory purchases Major Suppliers item
Concentrations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of major customers |  |  | 3 | 4 | 4 | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentrations risk (as a percent) |  |  |  |  |  |  | 19.00% | 16.00% | 13.00% | 11.00% | 12.00% | 11.00% | 10.00% | 24.00% | 10.00% | 26.00% | 19.00% | 16.00% | 14.00% |  |  |  |
Number of major suppliers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 | 1 | 2 | 1
Concentration of Credit Risk |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of banks for maintenance of cash balances | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Details
Name: | issc_ConcentrationOfCreditRiskAbstract
Namespace Prefix: | issc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of banks for maintenance of cash balances. + References No definition available. + Details
Name: | issc_NumberOfBanks
Namespace Prefix: | issc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of major customers of the entity. + References No definition available. + Details
Name: | issc_NumberOfMajorCustomers
Namespace Prefix: | issc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of major suppliers of the entity. + References No definition available. + Details
Name: | issc_NumberOfMajorSuppliers
Namespace Prefix: | issc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ConcentrationRiskLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration