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Note 2 - Inventories (Details) - Major Components of Inventories (USD $)	Jun. 30, 2014	Dec. 31, 2013
Major Components of Inventories [Abstract]
Finished products	$ 1,791,334	$ 1,638,997
Work-in-process	2,444,272	1,934,493
Raw materials	4,262,412	3,897,207
	$ 8,498,018	$ 7,470,697

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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