Product Revenue

6 Months Ended

Jun. 30, 2011

Product Revenue

Product Revenue

Note 4 — Product Revenue

The Company distinguishes revenue and cost of revenue between product sales, rental activity and service activity (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
Revenue:
Product	$	37,040	$	19,119	$	72,012	$	37,413
Rental		14,823		9,577		28,958		17,206
Service		4,055		2,478		7,853		4,925
	$	55,918	$	31,174	$	108,823	$	59,544
Cost of revenue:
Product	$	23,438	$	10,620	$	45,105	$	21,798
Rental		6,401		5,235		12,882		10,410
Service		2,355		1,638		4,520		3,338
Depreciation		1,480		2,330		2,927		4,635
	$	33,674	$	19,823	$	65,434	$	40,181