Note 3 - Inventories (Tables)

3 Months Ended

Mar. 31, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	March 31, 2014		December 31, 2013
	(Dollars in thousands)
Raw materials and purchased parts for assembly	$	6,557	$	6,326
Self-manufactured assembly parts and finished products		16,114		15,963
Total	$	22,671	$	22,289