Information about Geographic Areas (Tables)

6 Months Ended

Jun. 30, 2013

Information about Geographic Areas [Abstract]

Revenue and long-lived assets by geographic area

Revenue by geography is based on the sales region of the customer. The following table sets forth revenue and long-lived assets by geographic area (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Total revenue:
North America	$	19,757	$	20,289	$	38,839	$	40,426
Asia		846		3,077		1,750		7,142
Europe		1,234		1,139		2,118		2,485
Total revenue	$	21,837	$	24,505	$	42,707	$	50,053

	June 30, 2013		December 31, 2012
Long-lived assets:
North America	$	3,408	$	3,663
Asia		424		447
Europe		4,605		4,703
Total long-lived assets	$	8,437	$	8,813