Note 5 - Property, Plant and Equipment, Net (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Property, Plant and Equipment
Machinery and equipment	$ 13,932,828	$ 13,734,528
Building and improvements	4,357,247	4,303,156
Vehicles	90,713	94,227
Furniture, fixtures, computers and software	1,338,793	1,317,189
Land	202,492	202,492
Construction in progress	583,154	177,473
Total property, plant and equipment	20,505,227	19,829,065
Less: accumulated depreciation	(12,832,478)	(12,249,509)
Property, plant and equipment, net	$ 7,672,749	$ 7,579,556
Minimum asset life (years)
Property, Plant and Equipment
Machinery and equipment	3
Vehicles	3
Furniture, fixtures, computers and software	3
Maximum asset life (years)
Property, Plant and Equipment
Machinery and equipment	15
Vehicles	5
Furniture, fixtures, computers and software	5
Asset life (years)
Property, Plant and Equipment
Building and improvements	20