XML 58 R45.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 5 - Accounts Receivable and Customer Concentrations - Concentration of Revenue (Details) - Customer Concentration Risk [Member] | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Customer A [Member] | Sales Revenue, Net [Member] |  |
Concentration risk | 9.30% | 13.20%
Customer A [Member] | Accounts Receivable [Member] |  |
Concentration risk | 15.20% | 14.20%
Customer B [Member] | Sales Revenue, Net [Member] |  |
Concentration risk | 26.60% | 28.50%
Customer B [Member] | Accounts Receivable [Member] |  |
Concentration risk | 25.80% | 52.20%
Customer C [Member] | Sales Revenue, Net [Member] |  |
Concentration risk | 11.90% | 10.30%
Customer C [Member] | Accounts Receivable [Member] |  |
Concentration risk | 9.00% | 5.20%
Customer D [Member] | Sales Revenue, Net [Member] |  |
Concentration risk | 11.30% | 6.40%
Customer D [Member] | Accounts Receivable [Member] |  |
Concentration risk | 7.60% | 5.90%

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 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592 Reference 2: 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=77997519&loc=d3e13531-108611 Reference 3: 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=84177426&loc=d3e6404-108592 Reference 4: 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=77997519&loc=d3e13537-108611 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_MajorCustomersAxis=ins_CustomerAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=ins_CustomerBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=ins_CustomerCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=ins_CustomerDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |