Deferred Revenue

6 Months Ended

Jun. 30, 2015

Deferred Revenue [Abstract]

Deferred Revenue

8. Deferred Revenue

Deferred revenue consists of the following:

	June 30,	December 31,
	2015	2014
Product shipped, revenue deferred	$        210,360	$        457,348
Customer deposits	41,779	1,065,371
Deferred service and license fees	6,947,167	6,111,616
	7,199,306	7,634,335
Less: Long-term deferred revenue	(856,854)	(976,165)
Total current deferred revenue	$     6,342,452	$     6,658,170