Accrued Expenses (Tables)

v2.4.1.9

Accrued Expenses (Tables)	3 Months Ended
	Mar. 31, 2015
Accounts Payable and Accrued Liabilities, Current [Abstract]
Schedule of Accrued Liabilities [Table Text Block]	Accrued expenses consisted of the following:     March 31,   December 31,       2015   2014       unaudited         Accrued compensation   $ 718,262   $ 548,953   Warranty reserve     209,380     143,364   Other     89,587     80,802       $ 1,017,229   $ 773,119