Note 6 - Inventories (Tables)

9 Months Ended

Sep. 30, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	September 30, 2013		December 31, 2012
Raw materials	$	5,590,000	$	8,212,000
Work in process		2,628,000		3,056,000
Finished goods		5,423,000		5,896,000
	$	13,641,000	$	17,164,000