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Note 15 - Subsequent Events (Details Textual) $ in Millions	Mar. 22, 2021 USD ($)	Jan. 05, 2021 USD ($)	Apr. 10, 2019 USD ($)	May 26, 2021	Mar. 25, 2021 USD ($)	Mar. 22, 2021 CAD ($)
William Bartels [Member] | Loans Payable [Member] | Forecast [Member]
Debt Instrument, Interest Rate, Stated Percentage				6.00%
Subsequent Event [Member] | William Bartels [Member] | Loans Payable [Member]
Debt Instrument, Interest Rate, Stated Percentage					2.00%
Debt Instrument, Face Amount					$ 100,000
Revolving Credit Facility [Member] | North Mill, LLC [Member]
Debt Instrument, Facility Fee for First 10.5 Million Loan Balance, Percentage			1.50%
Debt Instrument, Early Termination Fee, Percentage			1.00%
Revolving Credit Facility [Member] | North Mill, LLC [Member] | Subsequent Event [Member]
Debt Instrument, Facility Fee for First 10.5 Million Loan Balance, Percentage	0.80%	1.50%
Debt Instrument, Fee Amount	$ 84,000	$ 157,500
Debt Instrument, One Time Fee for Each Incremental 1 Million Increase in Loan Balance	$ 15,000	$ 15,000
Debt Instrument, Early Termination Fee, Percentage	0.85%
Revolving Credit Facility [Member] | North Mill, LLC [Member] | Subsequent Event [Member] | Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage		6.75%
Revolving Credit Facility [Member] | North Mill, LLC [Member] | Subsequent Event [Member] | Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.95%	1.25%
Revolving Credit Facility [Member] | North Mill, LLC [Member] | Subsequent Event [Member] | Prime Rate [Member] | Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	5.25%					5.25%
Revolving Credit Facility [Member] | North Mill, LLC [Member] | SPAR Marketing Force [Member]
Debt Instrument, Covenant, Unbilled Cap			$ 4,500,000
Revolving Credit Facility [Member] | North Mill, LLC [Member] | SPAR Marketing Force [Member] | Subsequent Event [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 16,500,000
Borrowing Base Availability for Unbilled Receivables, Percentage	70.00%
Debt Instrument, Covenant, Unbilled Cap	$ 5,500,000
Revolving Credit Facility [Member] | North Mill, LLC [Member] | SPAR Canada Company [Member] | Subsequent Event [Member]
Line of Credit Facility, Maximum Borrowing Capacity						$ 1.5

X

- Definition

The percentage of borrowing base availability for unbilled receivables.

+ References

No definition available.

+ Details

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- Definition

The unbilled cap pursuant to the debt agreement.

+ References

No definition available.

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- Definition

The percentage of early termination fee pursuant to the debt agreement.

+ References

No definition available.

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- Definition

The percentage of facility fee for first 10.5 million loan balance pursuant to the debt agreement.

+ References

No definition available.

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- Definition

The amount of one time fee for each incremental 1 million increase in loan balance pursuant to the debt agreement.

+ References

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

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Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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