Note 6 - Inventories (Tables)

3 Months Ended

Mar. 31, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	March 31,		December 31,
	2014		2013
Raw materials	$	6,180,000	$	5,876,000
Work in process		2,245,000		2,178,000
Finished goods		6,057,000		6,086,000
	$	14,482,000	$	14,140,000