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Note 6 - Commitments and Contingencies (Details Textual)									1 Months Ended			2 Months Ended	12 Months Ended
	Mar. 17, 2020 USD ($)	Mar. 17, 2020 USD ($)	Mar. 06, 2020 USD ($)	Oct. 08, 2019 USD ($)	Mar. 18, 2019 USD ($)	Sep. 19, 2018 USD ($)	Sep. 18, 2018 USD ($)	May 03, 2018	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Mr. Brown [Member] | SPAR BSMT [Member]
Related Party Ownership Percentage								10.00%
SBS Bankruptcy and Settlement [Member] | Subsequent Event [Member] | Robert G. Brown [Member]
Loss Contingency, Damages Sought, Value	$ 1,300,000	$ 3,000,000	$ 1,707,374
SBS Bankruptcy, Settlement and March 2020 Claim [Member] | Subsequent Event [Member] | Robert G. Brown [Member]
Loss Contingency, Yearly Damages Sought, Value		$ 500,000
Alleged Lost Tax Benefits and Other Expenses [Member] | SPAR InfoTech, Inc. [Member]
Loss Contingency, Damages Sought, Value						$ 190,000	$ 190,000
Related-party Expenses Allowed by the Audit Committee						50,000
Related-party Expenses Disallowed By the Audit Committee						150,000
Allegedly Owed Programming Services [Member] | SPAR InfoTech, Inc. [Member]
Loss Contingency, Damages Sought, Value						$ 900,000	$ 900,000
Alleged Lost Tax Benefits and Allegedly Owed Programming Services [Member] | SPAR InfoTech, Inc. [Member]
Litigation Settlement, Management Offer				$ 225,000
Litigation Settlement, Amount Awarded to Other Party				275,000
Litigation Settlement, Amount Awarded to Other Party, Paid Upon Court Approval				75,000
Litigation Settlement, Amount Awarded to Other Party, Paid Within 30 Days				75,000
Litigation Settlement, Amount Awarded to Other Party, Paid Within 60 Days				75,000
Litigation Settlement, Amount Awarded to Other Party, Paid Within 90 Days				$ 50,000
Reimbursement for SMF's funding of the Affinity Security Deposits [Member]
Loss Contingency, Damages Sought, Value					$ 378,838
Reimbursement for SMF's Funding of the Field Payment Checks [Member]
Loss Contingency, Damages Sought, Value					12,963
SBS Clothier Litigation [Member]
Loss Contingency, Damages Sought, Value					$ 1,839,459
Litigation Settlement, Amount Awarded to Other Party												$ 250,000	$ 1,300,000
Settlement and Other Charges														$ 1,300,000
Loss Contingency, Damages Number of Equal Annual Installments													4
Loss Contingency, Damages Paid, Value											$ 325,000
Loss Contingency Accrual, Ending Balance											975,000	975,000	$ 975,000
SBS and SGRP Hogan Litigation [Member]
Loss Contingency, Damages Paid, Value											150,000
Loss Contingency Accrual, Ending Balance											$ 100,000	$ 100,000	$ 100,000
Loss Contingency, Damages Number of Installments												3
SBS and SGRP Hogan Litigation [Member] | Forecast [Member]
Loss Contingency, Damages Paid, Value									$ 50,000
SBS and SGRP Hogan Litigation [Member] | Subsequent Event [Member]
Loss Contingency, Damages Paid, Value										$ 50,000

X

- Definition

The amount of the litigation settlement that was awarded to the other party that is to be paid upon court approval of the settlement.

+ References

No definition available.

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- Definition

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+ References

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- Definition

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+ References

No definition available.

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- Definition

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+ References

No definition available.

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- Definition

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- Definition

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+ References

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- Definition

Amount of settlement and other charges.

+ References

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
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