Note 4 - Receivables Financing Liability (Details Textual) - RTS Financial Services Inc. [Member]	3 Months Ended
	Mar. 31, 2018 USD ($)
Factoring Agreement, Computation of Daily Factor Fee, Denominator	360
Factoring Agreement, Percentage of Account Receivable Value Paid by Factor at Purchase	80.00%
Factoring Agreement, Required Period of Factored Receivables Payment before Mandatory Repurchase	120 days
Factoring Agreement, Initial Term	1 year
Factoring Agreement, Term of Renewal Periods	1 year
Factoring Agreement, Conclusion of Initial Term, Required Termination Notice	60 days
Factoring Agreement, Conclusion of Initial Term, Early Termination Fee	$ 10,000
Factoring Agreement, Termination Period Resulting in an Early Termination Fee Based on Average Monthly Factored Receivables	2 years
Factoring Agreement, Termination Notice Required Resulting in an Early Termination Fee Based on Average Monthly Factored Receivables	30 days
Factoring Agreement, Factor Termination Notice Required	90 days
Prime Rate [Member]
Factoring Agreement, Computation of Daily Factor Fee, Numerator, Basis Spread on Variable Rate	7.00%