Note 4 - Inventories (Tables)

12 Months Ended

Dec. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	December 31,
	2013		2012
Raw materials	$	5,876,000	$	8,212,000
Work in process		2,178,000		3,056,000
Finished goods		6,086,000		5,896,000
	$	14,140,000	$	17,164,000