8. Concentration of Credit Risk, Segment, and Geographic Information

We operate in two segments, products and services, as disclosed within our condensed consolidated Statements of Operations. We evaluate segment results using revenues and gross margin as the performance measures. Such information is shown on the face of the accompanying statements of operations. We do not identify assets on a segment basis. We attribute revenues to individual countries and geographic areas based upon location of our customers. A summary of our revenues by geographic area is as follows (in thousands):


		Three Months Ended				Nine Months Ended
		March 31,				March 31,
		2013		2012		2013		2012
United States	$	9,239	$	5,366	$	29,431	$	21,833
Canada		3,018		1,060		5,062		2,540
Total North America		12,257		6,426		34,493		24,373

Japan		2,266		7,829		8,899		14,655
Other Asia Pacific countries		996		879		1,663		1,776
Total Asia Pacific		3,262		8,708		10,562		16,431
Europe		1,408		1,149		3,461		4,689
South America		-		8		4		96
Total revenue	$	16,927	$	16,291	$	48,520	$	45,589

In addition, the following summarizes revenues by significant customer where such revenue accounted for 10% or more of total revenues for any one of the indicated periods:


	Three Months Ended				Nine Months Ended
	March 31,				March 31,
	2013		2012		2013		2012
Customer A	13	%	<10	%	13	%	<10	%
Customer B	11	%	<10	%	<10	%	<10	%
Customer C	<10	%	<10	%	12	%	<10	%
Customer D	<10	%	38	%	<10	%	24	%

We assess credit risk through ongoing credit evaluations of customers' financial condition, and collateral is generally not required. The following summarizes accounts receivable by significant customer for whom accounts receivable were 10% or more of total accounts receivables for any one of the indicated periods:


	March 31,		June 30,
	2013		2012
Customer C	17	%	<10	%
Customer B	12	%	19	%
Customer A	12	%	12	%

There were no other customers representing 10% or more of our trade receivables at March 31, 2013 and June 30, 2012.

The following summarizes purchases from significant vendors where such purchases accounted for 10% or more of total purchases for any one of the indicated periods:


	Three Months Ended				Nine Months Ended
	March 31,				March 31,
	2013		2012		2013		2012
Vendor A	37	%	42	%	26	%	31	%
Vendor B	16	%	13	%	14	%	<10	%