Business Segment, Geographic Areas and Major Customers

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Business Segment, Geographic Areas and Major Customers

Note 11. Business Segment, Geographic Areas and Major Customers

For financial reporting purposes, we have one reportable segment which designs, manufactures and markets medical devices for the treatment of advanced heart failure. Products are distributed to customers located in the United States through our clinical trials and as commercial products, as commercial products to customers in Europe and under special access in other countries. Product sales attributed to a country or region are based on the location of the customer to whom the products are sold. Long-lived assets are primarily held in the United States.

Product sales by geographic location were as follows:

	Three Months Ended March 31,
	2015		2014
	(in thousands)
United States	$	42,189	$	33,788
Germany		12,741		14,678
International, excluding Germany		15,091		18,006
	$	70,021	$	66,472

As a significant portion of our revenue is generated outside of the United States, we are dependent on favorable economic and regulatory environments for our products in Europe and other countries outside of the United States. For the three months ended March 31, 2015 and 2014, no customer exceeded 10% of product sales individually.