Equity Transactions (Details) - USD ($)			1 Months Ended			3 Months Ended	9 Months Ended
	Jun. 06, 2020	Apr. 05, 2019	Aug. 31, 2020	Jun. 30, 2020	May 31, 2020	Sep. 30, 2020	Sep. 30, 2020	Apr. 22, 2020
ATMs
Subsidiary, Sale of Stock [Line Items]
Number of shares issued and sold			27,000,000.0	24,800,000	34,400,000	27,000,000.0	86,200,000
Proceeds from sale of stock						$ 10,100,000	$ 25,600,000
Commissions, fees and expenses						$ 400,000	$ 1,100,000
Number of shares outstanding, remaining capacity						19,500,000	19,500,000
Subscription Agreements
Subsidiary, Sale of Stock [Line Items]
Number of shares issued and sold	1,300,000	100,000
Proceeds from sale of stock		$ 1,000,000.0
Number of shares sold in subscription agreement								1,000
Aggregate offering price								$ 395
Accredited investors agreement to cancel outstanding obligation	$ 300,000
Accredited investors agreement to cancel additional portion owed representing a discount	$ 200,000