Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
State and local	$ (3,156)	$ (500)	$ (745)
Federal	0	0	0
Income tax expense	$ (3,156)	$ (500)	$ (745)