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Note 6 - Commitments and Contingencies (Details Textual) |  |  |  |  | 3 Months Ended | 7 Months Ended | 11 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 18, 2019 USD ($) | Sep. 18, 2018 USD ($) | Jun. 07, 2018 USD ($) | Dec. 08, 2015 | Jun. 30, 2018 USD ($) | Jul. 31, 2018 USD ($) | Jul. 27, 2018 USD ($) | Nov. 23, 2018 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Operating Leases, Rent Expense, Total |  |  |  |  |  |  |  |  | $ 2,211,000 | $ 1,806,000
SPAR InfoTech, Inc. [Member] | Alleged Lost Tax Benefits and Other Expenses [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  | $ 190,000 |  |  |  |  |  |  |  |
SPAR InfoTech, Inc. [Member] | Allegedly Owed Programming Services [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  | 900,000 |  |  |  |  |  |  |  |
Robert G. Brown [Member] |  |  |  |  |  |  |  |  |  |
Related-party Expenses Allowed by the Audit Committee |  | 50,000 |  |  |  |  |  |  |  |
Related-party Expenses Disallowed By the Audit Committee |  | 150,000 |  |  |  |  |  |  |  |
Estimated Litigation Liability |  | 75,000 |  |  |  |  |  |  |  |
Robert G. Brown [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Estimated Litigation Liability |  | 75,000 |  |  |  |  |  |  |  |
Robert G. Brown [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Estimated Litigation Liability |  | $ 90,000 |  |  |  |  |  |  |  |
SBS [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Reimbursement of Legal Expenses from Transaction with Related Party |  |  |  |  |  | $ 260,000,000,000 |  | $ 50,000 |  | $ 260,000
SBS [Member] | Domestic Merchandising Specialists Field Force [Member] |  |  |  |  |  |  |  |  |  |
Percent Of Service Provided By Related Party |  |  |  |  |  |  | 27.00% |  |  | 77.00%
Payments for Related Party Services |  |  |  |  |  |  | $ 15,400,000 |  |  | $ 25,900,000
Reimbursement for SMF's funding of the Affinity Security Deposits [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ 378,838 |  |  |  |  |  |  |  |  |
Reimbursement for SMF's Funding of the Field Payment Checks [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value | 12,963 |  |  |  |  |  |  |  |  |
SBS Clothier Litigation [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  | $ 1,300,000 |  |  |  |  |  |  |
Loss Contingency, Damages Number of Equal Annual Installments |  |  | 4 |  |  |  |  |  |  |
Loss Contingency, Commencement of Payments of Damages, Number of Days Following Final Settlement |  |  | 30 |  |  |  |  |  |  |
Settlement and Other Charges |  |  |  |  | $ 1,300,000 |  |  |  |  |
SBS Clothier Litigation [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ 1,839,459 |  |  |  |  |  |  |  |  |
SBS Rodgers Litigation [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingency, Number of Plaintiffs |  |  |  | 6 |  |  |  |  |  |
Hogan Case [Member] |  |  |  |  |  |  |  |  |  |
Estimated Litigation Liability |  |  |  |  |  |  |  |  | 250,000 |
Loss Contingency, Estimate of Possible Loss |  |  |  |  |  |  |  |  | 250,000 |
Equipment [Member] |  |  |  |  |  |  |  |  |  |
Operating Leases, Rent Expense, Total |  |  |  |  |  |  |  |  | $ 167,000 | $ 163,000

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