Stock-based Compensation (Details 1) - Employee Stock Option [Member] - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Schedule Of Share Based Compensation Stock Options Activity [Line Items]
Number of Options, Beginning balance	625,000
Number of Options, Granted	14,000
Stock Options, Exercised	(4,000)
Stock Options, Forfeited	(23,000)
Number of Options, Ending balance	612,000	625,000
Stock Options, Exercisable	295,000
Weighted Average Exercise Price, Beginning balance	$ 2.85
Weighted Average Exercise Price, Granted	3.90
Weighted Average Exercise Price, Exercised	2.81
Weighted Average Exercise Price, Forfeited	2.82
Weighted Average Exercise Price, Ending balance	2.87	$ 2.85
Grant Date Weighted Average Exercise Price, Exercisable	$ 2.82
Weighted Average Remaining Contractual Life (Years), Balance	3 years 10 months 6 days	4 years 3 months
Weighted Average Remaining Contractual Life (Years), Exercisable	3 years 7 months 17 days