Note 6 - Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Inventory, Current [Table Text Block]

	March 31, 2013		December 31, 2012
Raw materials	$	6,920,000	$	8,212,000
Work in process		2,896,000		3,056,000
Finished goods		6,483,000		5,896,000
	$	16,299,000	$	17,164,000