Note 4 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property and equipment, gross	$ 63,553	$ 60,619
Less accumulated depreciation and amortization	(19,582)	(17,233)
Property and equipment, net	43,971	43,386
Land and Land Improvements [Member]
Property and equipment, gross	14,118	13,931
Building and Building Improvements [Member]
Property and equipment, gross	33,533	30,556
Machinery and Equipment [Member]
Property and equipment, gross	9,015	8,865
Vehicles [Member]
Property and equipment, gross	445	445
Office Equipment [Member]
Property and equipment, gross	5,963	5,571
Construction in Progress [Member]
Property and equipment, gross	$ 479	$ 1,251

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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