Note 2 - Inventories (Tables)

12 Months Ended

Dec. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	December 31,
	2013		2012
	(Dollars in thousands)
Raw materials and purchased parts for assembly	$	6,326	$	9,775
Self-manufactured assembly parts and finished products		15,963		10,894
Total	$	22,289	$	20,669