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Note 6 - Notes Receivable (Details Textual) - USD ($)		3 Months Ended
	Sep. 18, 2017	Dec. 31, 2017
Receivable Commitment to Lend	$ 1,500,000
Payments to Acquire Notes Receivable	750,000	$ 500,000
Financing Receivable, Gross		$ 1,250,000
Notes Receivable, Period Advances	$ 250,000
Notes Receivable, Stated Interest Rate	6.00%

X

- Definition

The cash outflow related to notes receivable that may be required as periodic advances.

+ References

No definition available.

+ Details

Name:	ins_NotesReceivablePeriodAdvances
Namespace Prefix:	ins_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The stated interest rate of notes receivable.

+ References

No definition available.

+ Details

Name:	ins_NotesReceivableStatedInterestRate
Namespace Prefix:	ins_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The entire commitment to lend made by the company to another entity.

+ References

No definition available.

+ Details

Name:	ins_ReceivableCommitmentToLend
Namespace Prefix:	ins_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10(3))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_NotesReceivableGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The cash outflow to acquire an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireNotesReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration