Net Loss Per Common Share (Details) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Weighted Average Number Diluted Shares Outstanding Adjustment	4,147,000	4,167,000
Warrant [Member]
Weighted Average Number Diluted Shares Outstanding Adjustment	2,000,000	2,060,000
Employee Stock Option [Member]
Weighted Average Number Diluted Shares Outstanding Adjustment	2,147,000	2,107,000