Note 7 - Debt, Credit Facilities and Capital Leases - Annual Maturities of Capital Lease Commitments, Including Interest (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
2019	$ 5,745
2020	4,480
2021	3,052
2022	733
2023	23
Total	14,033
Less: imputed interest	(898)
Net capital lease obligation	13,135	$ 11,800
Current portion of capital leases	5,264	5,608
Long-term capital leases	$ 7,871	$ 6,193

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.

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