Note 6 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Property and equipment, gross	$ 71,441	$ 64,406
Less accumulated depreciation and amortization	(23,222)	(21,872)
Property and equipment, net	48,219	42,534
Land and Land Improvements [Member]
Property and equipment, gross	14,612	14,231
Building and Building Improvements [Member]
Property and equipment, gross	42,413	36,185
Machinery and Equipment [Member]
Property and equipment, gross	4,869	4,508
Office Equipment [Member]
Property and equipment, gross	6,964	6,458
Vehicles [Member]
Property and equipment, gross	499	455
Construction in Progress [Member]
Property and equipment, gross	$ 2,084	$ 2,569

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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