Note 3 - Inventories (Tables)

9 Months Ended

Sep. 30, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	September 30, 2013		December 31, 2012
	(Dollars in thousands)
Raw materials and purchased parts for assembly	$	10,034	$	9,775
Self-manufactured assembly parts and finished products		10,362		10,894
Total	$	20,396	$	20,669