Inventories (Tables)

6 Months Ended

Jun. 30, 2012

INVENTORIES [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consist of the following (in thousands):

	June 30, 2012		March 31, 2012		December 31, 2011
	(Unaudited)		(Unaudited)
Finished goods	$	40,768	$	39,233	$	32,604
Parts and materials	15,410		15,934		18,004
Work in progress	2,003		2,952		2,606
Total inventories	$	58,181	$	58,119	$	53,214