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Note 14 - Foreign Revenues and Operations (Details) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Note 14 - Foreign Revenues and Operations (Details) [Line Items] |  |
Assets | $ 9,205,000 us-gaap_Assets | $ 10,627,000 us-gaap_Assets
INDIA |  |
Note 14 - Foreign Revenues and Operations (Details) [Line Items] |  |
Assets, Noncurrent | 199,000 us-gaap_AssetsNoncurrent / us-gaap_StatementGeographicalAxis = country_IN | 209,000 us-gaap_AssetsNoncurrent / us-gaap_StatementGeographicalAxis = country_IN
Foreign [Member] |  |
Note 14 - Foreign Revenues and Operations (Details) [Line Items] |  |
Assets | 557,000 us-gaap_Assets / us-gaap_StatementGeographicalAxis = ins_ForeignMember | 502,000 us-gaap_Assets / us-gaap_StatementGeographicalAxis = ins_ForeignMember
Liabilities | $ 351,000 us-gaap_Liabilities / us-gaap_StatementGeographicalAxis = ins_ForeignMember | $ 304,000 us-gaap_Liabilities / us-gaap_StatementGeographicalAxis = ins_ForeignMember

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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