Net Loss per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net Loss per Share (Textual)
Number of antidilutive securities excluded from computation of earnings per share	13,230,328	14,422,895	13,230,328	14,422,895
RSUs [Member]
Net Loss per Share (Textual)
Number of antidilutive securities excluded from computation of earnings per share	3,066,697	1,759,164	3,066,697	1,759,164
Unvested Restricted Stock [Member]
Net Loss per Share (Textual)
Number of antidilutive securities excluded from computation of earnings per share	624,116	624,116	624,116	624,116
Earnout Shares [Member]
Net Loss per Share (Textual)
Number of antidilutive securities excluded from computation of earnings per share		2,500,000		2,500,000
Stock Warrants [Member]
Net Loss per Share (Textual)
Number of antidilutive securities excluded from computation of earnings per share	9,539,565	9,539,615	9,539,565	9,539,615