The percentage of borrowing base availability for unbilled receivables.

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Minimum fixed charge ratio that must be maintained to remain compliant with the debt covenants.

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The unbilled cap pursuant to the debt agreement.

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

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

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No definition available.

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

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Cash outflow for debt instrument modification fee.

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Percent of eligible domestic accounts receivable less certain reserves to calculate borrowing availability.

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No definition available.

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

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No definition available.

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

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

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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The effective interest rate at the end of the reporting period.

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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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The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

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No definition available.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Note 4 - Credit Facilities (Details Textual) ¥ in Millions, $ in Millions, $ in Millions					6 Months Ended	12 Months Ended
	Mar. 22, 2021 USD ($)	Jan. 05, 2021 USD ($)	Apr. 10, 2019	Jan. 09, 2018 USD ($)	Jun. 30, 2021	Dec. 31, 2021 USD ($)	Dec. 31, 2021 AUD ($)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 MXN ($)	Dec. 21, 2021 USD ($)	Dec. 21, 2021 CNY (¥)	Sep. 30, 2021	Mar. 22, 2021 CAD ($)	Jan. 05, 2021 CAD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 AUD ($)	Dec. 31, 2020 CNY (¥)	Feb. 04, 2020 MXN ($)	Oct. 31, 2017 AUD ($)
Resource Plus Acquisition Note [Member]
Debt Instrument, Interest Rate, Stated Percentage						1.85%	1.85%	1.85%	1.85%
Debt Instrument, Face Amount				$ 2,300,000
Notes Payable, Total						$ 1,000,000.0
North Mill, LLC [Member]
Debt Instrument, Interest Rate, Effective Percentage						5.38%	5.38%	5.38%	5.38%
National Australia Bank [Member]
Debt Instrument, Interest Rate, Effective Percentage						6.76%	6.76%	6.76%	6.76%
China Construction Bank [Member]
Debt Instrument, Interest Rate, Effective Percentage						5.33%	5.33%	5.33%	5.33%
China Construction Bank [Member] \| SPAR China [Member]
Debt Instrument, Interest Rate, Stated Percentage						4.25%	4.25%	4.25%	4.25%
Debt Instrument, Face Amount						$ 157,000		¥ 1
Long-term Debt, Total						$ 0
CCB Bank [Member] \| SPAR China [Member]
Debt Instrument, Interest Rate, Stated Percentage						3.65%	3.65%	3.65%	3.65%
Long-term Debt, Total						$ 157,000		¥ 1
People's Bank of China [Member]
Debt Instrument, Interest Rate, Effective Percentage						3.71%	3.71%	3.71%	3.71%
People's Bank of China [Member] \| SPAR China [Member]
Long-term Debt, Total						$ 157,000		¥ 1
Industrial Bank [Member]
Debt Instrument, Interest Rate, Effective Percentage						6.17%	6.17%	6.17%	6.17%
Industrial Bank [Member] \| SPAR China [Member]
Debt Instrument, Interest Rate, Stated Percentage						6.00%	6.00%	6.00%	6.00%
Debt Instrument, Face Amount						$ 472,000		¥ 3
Long-term Debt, Total															$ 460,000		¥ 3
Industrial Bank and Commericao Bank of China [Member]
Debt Instrument, Interest Rate, Effective Percentage						4.23%	4.23%	4.23%	4.23%
Industrial Bank and Commericao Bank of China [Member] \| SPAR China [Member]
Debt Instrument, Interest Rate, Stated Percentage										4.15%	4.15%
Debt Instrument, Face Amount										$ 315,000	¥ 2
Long-term Debt, Total						$ 315,000		¥ 2
Ve Por Mas [Member]
Debt Instrument, Interest Rate, Effective Percentage						7.76%	7.76%	7.76%	7.76%
Revolving Credit Facility [Member] \| North Mill, LLC [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
Payments for Debt Instrument Modification Fee		$ 7,500
Debt Instrument, Early Termination Fee, Percentage	0.85%		1.00%
Debt Instrument, Interest Rate, Effective Percentage						5.25%	5.25%	5.25%	5.25%						6.75%	6.75%	6.75%
Line of Credit, Current						$ 9,700,000									$ 8,300,000
Lines of Credit, Fair Value Disclosure						9,900,000									8,400,000
Revolving Credit Facility [Member] \| North Mill, LLC [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		1.25%
Debt Instrument, Interest Rate, Stated Percentage	1.25%												1.25%
Revolving Credit Facility [Member] \| North Mill, LLC [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	5.25%	6.75%											5.25%	6.75%
Revolving Credit Facility [Member] \| North Mill, LLC [Member] \| SPAR Marketing Force [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	$ 4,500,000
Revolving Credit Facility [Member] \| North Mill, LLC [Member] \| SPAR Canada Company [Member]
Line of Credit Facility, Maximum Borrowing Capacity													$ 1.5
Revolving Credit Facility [Member] \| North Mill, LLC [Member] \| NM Loan Agreement [Member] \| SPAR Marketing Force [Member]
Line of Credit Facility, Maximum Borrowing Capacity		14,500,000
Debt Instrument, Covenant, Unbilled Cap		4,500,000
Revolving Credit Facility [Member] \| North Mill, LLC [Member] \| NM Loan Agreement [Member] \| SPAR Marketing Force [Member] \| Maximum [Member]
Borrowing Base Availability for Unbilled Receivables, Percentage					70.00%
Revolving Credit Facility [Member] \| North Mill, LLC [Member] \| NM Loan Agreement [Member] \| SPAR Canada Company [Member]
Line of Credit Facility, Maximum Borrowing Capacity														$ 1.5
Debt Instrument, Covenant, Unbilled Cap		$ 3,900,000
Revolving Credit Facility [Member] \| Fifth Third Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity				$ 3,500,000
Percent Of Eligible Domestic Accounts Receivable Less Certain Reserves To Calculate Borrowing Availability				80.00%
Line of Credit Facility, Interest Rate at Period End												3.60%
Debt Covenant, Minimum Fixed Charge Ratio				1.2
Revolving Credit Facility [Member] \| Fifth Third Bank [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate				2.50%
Revolving Credit Facility [Member] \| National Australia Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity						572,000													$ 800,000
Percent Of Eligible Domestic Accounts Receivable Less Certain Reserves To Calculate Borrowing Availability																			80.00%
Long-term Line of Credit, Total						118,000	$ 164,000								$ 154,000	$ 200,000
Revolving Credit Facility [Member] \| Ve Por Mas [Member]
Line of Credit Facility, Maximum Borrowing Capacity						$ 383,000												$ 8.0
Line of Credit Facility, Interest Rate at Period End						7.50%	7.50%	7.50%	7.50%
Revolving Credit Facility [Member] \| Ve Por Mas [Member] \| Interbank Interest Rate [Member]
Debt Instrument, Basis Spread on Variable Rate						3.00%
Revolving Credit Facility [Member] \| Steel Factoring [Member]
Long-term Line of Credit, Total						$ 0
Revolving Credit Facility [Member] \| BBVA Bancormer [Member]
Line of Credit Facility, Maximum Borrowing Capacity						$ 359,000			$ 7.5
Line of Credit Facility, Interest Rate at Period End						9.50%	9.50%	9.50%	9.50%
Long-term Line of Credit, Total						$ 0
Revolving Credit Facility [Member] \| BBVA Bancormer [Member] \| Interbank Interest Rate [Member]
Debt Instrument, Basis Spread on Variable Rate						5.20%