Note 11 - Financing Arrangements - Contractual Financing Obligations (Details)	Mar. 31, 2018 USD ($)
2019	$ 9,324,278
2020	16,888,073
2021	10,640,086
2022	1,567,200
2023	1,567,200
Thereafter	8,463,400
Long-term Debt, gross	48,450,237
Less: Unamortized Debt Issuance Costs	(365,288)
Long-term Debt, total	$ 48,084,950

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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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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