Note 13 - Subsequent Events (Details Textual) - Subsequent Event [Member] - Steven N. Bronson, the Company’s President and Chief Executive Officer [Member] - Restricted Stock Units (RSUs) [Member] - Plan 2017 [Member]	Oct. 29, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	50,000
Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	25,000
Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	25,000