Note 6 - Inventories (Tables)

9 Months Ended

Sep. 30, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	September 30,		December 31,
	2014		2013
Raw materials	$	5,546,000	$	5,876,000
Work in process		3,811,000		2,178,000
Finished goods		4,314,000		6,086,000
	$	13,671,000	$	14,140,000