XML 22 R47.htm IDEA: XBRL DOCUMENT v2.4.0.8

Concentrations (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Concentration Risk
Export sales of net sales	1.00%	1.00%
Net sales
Concentration Risk
Number of customers	1	1
Net sales | Customer one
Concentration Risk
Customer's percentage of net sales	31.00%	30.00%
Accounts receivable
Concentration Risk
Number of customers		1
Accounts receivable | Customer one
Concentration Risk
Customer's percentage of net sales	47.00%	43.00%
Accounts receivable | Customer two
Concentration Risk
Customer's percentage of net sales	14.00%

X

- Definition

Number Of Customers

+ References

No definition available.

+ Details

Name:	isig_NumberOfCustomers
Namespace Prefix:	isig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the maximum percentage of sales from export sales.

+ References

No definition available.

+ Details

Name:	isig_PercentageOfExportSalesToNetSales
Namespace Prefix:	isig_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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