Geographic Information (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

External revenue and long-lived assets by geographical region

The following table summarizes external revenue by geographic region (in thousands):

Year Ended December 31:	2015		2014		2013
United States	$	42,933	$	51,036	$	55,071
Americas (Excluding the U.S.)	6,828		1,507		4,200
Europe	19,463		20,478		23,206
Asia Pacific	18,975		13,517		8,087
Total	$	88,199	$	86,538	$	90,564

Long-lived Assets:

The following table summarizes long-lived assets, consisting of property and equipment, by geographic region (in thousands):

December 31:	2015		2014
Americas	$	2,808	$	3,078
Europe	1,223		1,429
Asia Pacific	19		26
Total	$	4,050	$	4,533