Net Loss per Share - Additional Information (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net Loss Attributable to Non-controlling Interest	$ (8,000)	$ (16,000)	$ (26,000)	$ (30,000)	$ (27,000)	$ (16,000)	$ (50,000)	$ (73,000)
preferred stock accrued dividends								185,000
Series A Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
preferred stock accrued dividends	64,000			63,000			189,000	185,000
Series B Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net Loss Attributable to Non-controlling Interest	0	$ 0	$ 0	0	$ 0	$ 0
Accretion of preferred discount	500,000			100,000			1,300,000	600,000
preferred stock accrued dividends	$ 519,000			$ 70,000			$ 1,315,000	$ 585,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3,605,217			6,641,739			3,605,217	6,641,739
Equity Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,460,325			803,577
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount							18,714,999	18,915,851