Stockholders' Equity (Details)	Sep. 28, 2020 USD ($) $ / shares shares	Aug. 14, 2020 shares	Jul. 14, 2020 shares	Nov. 20, 2019 $ / shares shares	Sep. 30, 2020 $ / shares shares	Jan. 14, 2020 shares	Dec. 31, 2019 $ / shares shares	Nov. 19, 2019 USD ($) $ / shares shares	Sep. 30, 2019 shares	Dec. 31, 2017 $ / shares shares	Jan. 31, 2013 $ / shares shares
Class of Warrant or Right [Line Items]
Common stock, par value (in usd per share) | $ / shares	$ 0.0001				$ 0.0001
Preferred stock, authorized (in shares)					1,000,000		1,000,000
Sale of stock (in usd per share) | $ / shares	$ 10.50
Total offering size | $	$ 84,000,000
Sale of stock, consideration received on transaction | $	$ 78,700,000
Warrants issued and outstanding (in shares)					0				15,750
Warrants issued (in shares)				7,333,326						15,000,000	253,575
Warrants canceled and reissued to prior shareholders (in shares)				2,444,437
Term of warrants				5 years						5 years
Warrant, exercise price (in usd per share) | $ / shares				$ 11.50						$ 11.50	$ 17.80
Warrants, subject to adjustments after consummation of reverse capitalization period				30 days
Exercise conversion rate of warrants (share per share)			0.250
Warrants tendered (in shares)		7,189,990
Percent of warrants outstanding		99.93%
Public Stock Offering
Class of Warrant or Right [Line Items]
Common stock, shares issued (in shares)	8,000,000
Offering costs | $	$ 5,300,000
Over-Allotment Option
Class of Warrant or Right [Line Items]
Common stock, shares issued (in shares)	1,200,000
Tranche I - EBITDA for last 12 months or 20 trading days in consecutive 30 day trading period
Class of Warrant or Right [Line Items]
Maximum EBITDA before stock conversion | $								$ 132,000,000
Tranche II - LTM EBITDA or 20 trading days in consecutive 30 day trading period
Class of Warrant or Right [Line Items]
Maximum EBITDA before stock conversion | $								152,000,000
Tranche III - LTM EBITDA or 20 trading days in consecutive 30 day trading period
Class of Warrant or Right [Line Items]
Maximum EBITDA before stock conversion | $								$ 172,000,000
Class A-1 Common Stock
Class of Warrant or Right [Line Items]
Common stock, par value (in usd per share) | $ / shares					$ 0.0001		$ 0.0001
Common stock, shares authorized (in shares)					250,000,000		250,000,000
Common stock, shares issued (in shares)					92,146,013		76,637,470
Conversion of stock, shares converted (in shares)			3,784,416
Exercise of warrants (in shares)		1,797,474
Class A-1 Common Stock | Tranche I - EBITDA for last 12 months or 20 trading days in consecutive 30 day trading period
Class of Warrant or Right [Line Items]
Maximum stock price of common stock before conversion (in usd per share) | $ / shares								$ 12.00
Class A-1 Common Stock | Tranche II - LTM EBITDA or 20 trading days in consecutive 30 day trading period
Class of Warrant or Right [Line Items]
Maximum stock price of common stock before conversion (in usd per share) | $ / shares								14.00
Class A-1 Common Stock | Tranche III - LTM EBITDA or 20 trading days in consecutive 30 day trading period
Class of Warrant or Right [Line Items]
Maximum stock price of common stock before conversion (in usd per share) | $ / shares								$ 16.00
Class A-2 Common Stock
Class of Warrant or Right [Line Items]
Common stock, par value (in usd per share) | $ / shares					$ 0.0001		$ 0.0001
Common stock, shares authorized (in shares)					10,000,000		10,000,000
Common stock, shares issued (in shares)					3,403,363		4,999,999	5,000,000
Percentage of ownership requiring exchange (less than)					4.99%
Class A-2 Common Stock | Tranche I - EBITDA for last 12 months or 20 trading days in consecutive 30 day trading period
Class of Warrant or Right [Line Items]
Number of shares to be exchanged (in shares)								1,666,666
Class A-2 Common Stock | Tranche II - LTM EBITDA or 20 trading days in consecutive 30 day trading period
Class of Warrant or Right [Line Items]
Number of shares to be exchanged (in shares)								1,666,667
Class A-2 Common Stock | Tranche III - LTM EBITDA or 20 trading days in consecutive 30 day trading period
Class of Warrant or Right [Line Items]
Number of shares to be exchanged (in shares)								1,666,667
Number of shares converted (in shares)						1,596,636