Stock Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of share-based compensation, restricted stock and restricted stock units activity

A summary of the status and changes of the unvested shares of restricted stock under the 2016 Plan is presented below.

	Number of Unvested Restricted Shares	Weighted Average Grant-Date Fair Value
Unvested shares as of January 1, 2019	434,119	$	22.78
Granted	101,181	6.83
Vested	(231,896)	22.45
Forfeited	(82,163)	18.55
Unvested shares as of December 31, 2019	221,241	22.43
Granted	2,000,000	0.93
Vested	(653,655)	5.11
Forfeited	(47,167)	3.28
Unvested shares as of June 30, 2020	1,520,419	$	1.32