(13) Concentration of Credit and Foreign Sales Risks

The majority of the Company’s foreign sales are denominated in U.S. dollars. Product revenues are allocated to geographical locations on the basis of the ultimate destination of the equipment, if known. If the ultimate destination of such equipment is not known, product revenues are allocated to the geographical location of initial shipment. Service revenues, which relate primarily to the Solutions division, are allocated based upon the billing location of the customer. For the six months ended June 30, 2011 and 2010, international sales comprised 64% and 50%, respectively, of total net revenues.

A summary of net revenues by geographic area follows (in thousands):


	Six Months Ended
	June 30,
	2011		2010
North America	$	64,770	$	82,354
Europe		56,657		34,755
Asia Pacific		30,136		16,582
Middle East		17,377		3,442
Latin America		4,451		13,878
Africa		3,713		11,528
Commonwealth of Independent States (CIS)		1,980		1,566

Total	$	179,084	$	164,105

To the extent that world events or economic conditions negatively affect the Company’s future sales to customers in these and other regions of the world or the collectability of the Company’s existing receivables, the Company’s future results of operations, liquidity, and financial condition would be adversely affected. The Company currently requires customers in these higher risk countries to provide their own financing. The Company does not currently extend long-term credit through promissory notes or similar credit agreements to companies in countries the Company considers to be inappropriate for credit risk purposes.