Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax [Line Items]
Net operating loss carry forwards expiration, description	begin to expire in 2028
Net operating loss carry forwards expiration year start	2028
Income tax return examination, description	Income tax returns for the years ended after December 31, 2015 are open to audit by the federal and New York authorities and for the years ended after December 31, 2014 are open to audit by California state authorities.
Interest or penalties related to uncertain tax positions	$ 0	$ 0	$ 0
Adjustment to uncertain tax position	0
California Tax
Income Tax [Line Items]
Net operating loss carryforwards	0
Net operating loss carryforwards, subject to 382 limitations	11,400,000
New York State Income Tax
Income Tax [Line Items]
Net operating loss carryforwards	9,600,000
Net operating loss carryforwards, subject to 382 limitations	12,300,000
New York City Income Tax
Income Tax [Line Items]
Net operating loss carryforwards	8,800,000
Net operating loss carryforwards, subject to 382 limitations	9,300,000
Federal
Income Tax [Line Items]
Net operating loss carryforwards	32,000
Net operating loss carryforwards, subject to 382 limitations	$ 3,800,000