Accounts Receivable

6 Months Ended

Jun. 30, 2011

Accounts Receivable

Accounts Receivable

Note 4.  Accounts Receivable

Our accounts receivable include amounts due from customers and are reported net of a reserve for uncollectible accounts as follows:

	June 30, 2011		December 31, 2010
Accounts receivable, trade	$	690,043	$	279,376
Allowance for doubtful accounts	—		—
Accounts receivable, net	$	690,043	$	279,376

There was no allowance for doubtful accounts as of June 30, 2011, or December 31, 2010.  All accounts are expected to be collected.

Some of our research and development contracts contain holdback provisions that allow our customers to withhold 10% from each invoice payment. As of June 30, 2011, and December 31, 2010, our accounts receivable balance included holdbacks of approximately $48,000 and $19,000, respectively.