Note 6 - Inventories (Tables)

6 Months Ended

Jun. 30, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	June 30,		December 31,
	2014		2013
Raw materials	$	6,287,000	$	5,876,000
Work in process		2,713,000		2,178,000
Finished goods		5,013,000		6,086,000
	$	14,013,000	$	14,140,000