Note 6 - Inventories (Tables)

6 Months Ended

Jun. 30, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	June 30,		December 31,
	2013		2012
Raw materials	$	6,206,000	$	8,212,000
Work in process		2,250,000		3,056,000
Finished goods		5,827,000		5,896,000
	$	14,283,000	$	17,164,000