Inventories (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Inventories

	December 31,
(US$ in thousands)	2012		2011
Raw materials	$	8,470	$	10,081
Work-in-process		7,886		5,606
Finished products		36,675		32,697
Field inventory		29,363		28,012
Consignment inventory		6,350		6,573
	$	88,744	$	82,969