Line Of Credit And Commercial Letters Of Credit (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Percentage over LIBOR	0.50%
Letters of credit	$ 303,138	$ 200,000
Domestic Line of Credit [Member]
Line of credit limit	5,000,000	5,000,000
Line of credit outstanding	$ 0	$ 0