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Fair Value Measurements - Summary of Changes in Fair Value of the Earnout Liabilities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair value at January 1, 2020
Additions	889,200
Change in fair value	1,554,800
Fair value at December 31, 2020	$ 2,444,000

X

- Definition

Additions to earnout liability.

+ References

No definition available.

+ Details

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Namespace Prefix:	INLX_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Adjustment to fair value of contingent consideration - earnout.

+ References

No definition available.

+ Details

Name:	INLX_AdjustmentToFairValueOfContingentConsiderationEarnout
Namespace Prefix:	INLX_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Earnout liability.

+ References

No definition available.

+ Details

Name:	INLX_EarnoutLiability
Namespace Prefix:	INLX_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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