Prepaid Expenses and Other Current Assets

12 Months Ended

Dec. 31, 2011

Prepaid Expense And Other Assets [Abstract]

Prepaid Expenses and Other Current Assets

4. Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consist of the following:

	December 31, 2011		December 31, 2010
Prepaid expenses	$	460,297	$	401,789
Deferred cost of revenue		289,312		759,271
Other assets		2,331,875		3,396,658
Total prepaid expenses and other current assets	$	3,081,484	$	4,557,718

Deferred cost of revenue represents the cost of systems for which title has transferred from the Company but for which revenue has not been recognized.