Related Party Transactions (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Related Party Transactions (Textual)
Sales to the affiliated companies	$ 546,000	$ 725,000
Administrative fees	123,000	107,000
Receivables due from affiliated companies	1,068,000		$ 1,051,000
Amount paid to entity for research and development services	10,500	10,500
Insurance premiums paid	$ 60,000	$ 216,000