Equity Investment - Additional Information (Details) - USD ($) shares in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2016	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Gains on dilution of equity investment			$ 613,000
Loss from equity method investments		$ 357,000	613,000	$ 1,202,000
PACT Pharma
Schedule of Equity Method Investments [Line Items]
Investment balance	$ 0		0			$ 0
Gains on dilution of equity investment	1,500,000		1,500,000
Loss from equity method investments	$ 0		600,000
Unrealized loss on equity method investments			1,200,000
PACT Pharma | Prior Period
Schedule of Equity Method Investments [Line Items]
Gain on equity investments net of prior period losses			$ 900,000
PACT Pharma | Series A Preferred Stock
Schedule of Equity Method Investments [Line Items]
Purchase of common stock, shares					1.0
PACT Pharma | Common Stock
Schedule of Equity Method Investments [Line Items]
Purchase of common stock, shares					3.6