Deferred Revenue (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	$ 8,409,175	$ 9,455,133
Less: Long-term deferred revenue	(1,782,155)	(2,009,198)
Total current deferred revenue	6,627,020	7,445,935
Product Shipped, Revenue Deferred [Member]
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	455,314	366,388
Customer Deposits [Member]
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	1,050,000	2,505,000
Deferred Service And License Fees [Member]
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	$ 6,903,861	$ 6,583,745