Income Taxes - Loss from Operations Before Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Loss before before benefit from income taxes and noncontrolling interests, domestic	$ (19,352)	$ (16,168)
Loss before benefit from income taxes and noncontrolling interests	$ (19,352)	$ (16,168)