Deferred Revenue (Tables)

6 Months Ended

Jun. 30, 2012

Deferred Revenue [Abstract]

Schedule Of Deferred Revenue

	June 30,	December 31,
	2012	2011
Product shipped, revenue deferred	$1,595,106	$2,001,160
Customer deposits	447,700	1,156,900
Deferred service and license fees	6,259,427	5,696,959
	8,302,233	8,855,019
Less: Long-term deferred revenue	(766,860)	(634,713)
Total current deferred revenue	$7,535,373	$8,220,306