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Note 4 - Inventories (Details) - Inventories (USD $)	Dec. 31, 2014	Dec. 31, 2013
Inventories [Abstract]
Raw materials	$ 4,307,913	$ 4,058,350
Work-in-process	419,731	300,460
Finished goods	114,415	138,539
Totals	$ 4,842,059us-gaap_InventoryNet	$ 4,497,349us-gaap_InventoryNet

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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