Loss Per Share (Details Textual) - Restricted shares granted on June 30, 2015 [Member] - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2018
Loss Per Share (Textual)
Vested restricted shares granted	84,830	142,662	404,000
Unvested restricted shares	143,662	0