Note 11 - Lease Commitments - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Capital lease obligations, 2018	$ 256
Operating lease obligations, 2018	524
Total obligations, 2018	780
Capital lease obligations, 2019	260
Operating lease obligations, 2019	515
Total obligations, 2019	775
Capital lease obligations, 2020	259
Operating lease obligations, 2020	442
Total obligations, 2020	701
Capital lease obligations, 2021	215
Operating lease obligations, 2021	339
Total obligations, 2021	554
Capital lease obligations, 2022	15
Operating lease obligations, 2022	151
Total obligations, 2022	166
Capital lease obligations, thereafter	450
Operating lease obligations, thereafter
Total obligations, thereafter	450
Capital lease obligations, total minimum lease payments	1,455
Operating lease obligations, total minimum lease payments	1,971
Total obligations, minimum lease payments	3,426
Less: amounts representing interest	386
Present value of minimum lease payments	1,069
Less: current portion of obligations under capital leases	212	$ 112
Long-term portion of obligations under capital leases	$ 857	$ 452

Leases future minimum payments due.

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Leases future minimum payments due current.

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Leases future minimum payments due in five years.

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Leases future minimum payments due in four years.

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Leases future minimum payments due in three years.

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Leases future minimum payments due in two years.

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Leases future minimum payments due thereafter.

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Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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Amount of minimum lease payments for capital leases.

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Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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