Note 4 - Product Inventories (Tables)

6 Months Ended

Jun. 30, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	June 30, 2013		December 31, 2012
Raw materials	$	1,784	$	2,337
Work in process		1,783		3,666
Finished goods		1,199		1,413
Total product inventories	$	4,766	$	7,416