12. Segment and Enterprise-wide Disclosures

The FASB establishes standards for reporting information regarding operating segments in financial statements. Operating segments are identified as components of an enterprise that engage in business activities for which separate, discrete financial information is available and are regularly reviewed by the chief operating decision-maker in making decisions on how to allocate resources and assess performance. We view our operations and manage our business as one operating segment. No discrete operating information is prepared by us except for product sales by product line and by legal entity for local reporting purposes.

Most of our revenues were generated in the United States, Germany, and other European countries, Canada and Japan, and substantially all of our assets are located in the United States. Net sales to unaffiliated customers by country were as follows:

 

		Year ended December 31,
		2015				2014				2013
		(in thousands)
United States		$	45,177			$	41,545			$	39,240
Germany			9,090				7,639				6,939
Other countries			24,085				21,913				18,370
Net sales		$	78,352			$	71,097			$	64,549

Total property and equipment held by geography were as follows:

 

		As of December 31,
		2015				2014
		(in thousands)
United States		$	5,199			$	4,786
Australia			1,593				1,802
Germany			170				186
Other countries			60				104
Total property and equipment		$	7,022			$	6,878