Series A Preferred Stock - Additional Information (Details) - Series A Preferred Stock - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended
	Jan. 01, 2019	May 31, 2017	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Preferred shares authorized		30,000
Preferred shares issued		30,000
Preferred shares ,par value		$ 0.01
Aggregate liquidation preference of preferred shares		$ 30,000,000
Accrued dividend percentage of preferred shares	5.00%	15.00%
Dividends declared					$ 0
Preferred stock, interest expense			$ 32,000	$ 382,000	$ 829,000	$ 1,145,000