Stock Based Compensation - Narrative (Details) - USD ($)		3 Months Ended		9 Months Ended
	Jul. 23, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jun. 06, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)						7,949,996
Granted (in shares)	3,707,901			3,707,901
Grants in period (in dollars per share)	$ 4.25
Granted (in dollars per share)	$ 15.60			$ 15.60
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)						2,271,427
Granted (in shares)	1,389,570			1,389,570
Granted (in dollars per share)	$ 15.60			$ 15.60
Period for recognition (in years)				4 years 11 days
Stock based compensation		$ 1,000,000	$ 0	$ 1,000,000	$ 0
Non-vested restricted shares outstanding (in shares)		1,389,570		1,389,570			0
Non-vested restricted shares outstanding, amount		$ 20,600,000		$ 20,600,000
Restricted Stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	3 years
Restricted Stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	5 years
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)						5,678,569
Award vesting period (in years)	5 years
Period for recognition (in years)				4 years 9 months 18 days
Stock based compensation		$ 601,000	$ 0	$ 601,000	$ 0
Non-vested restricted shares outstanding (in shares)		3,707,901		3,707,901
Non-vested restricted shares outstanding, amount		$ 15,200,000		$ 15,200,000
Expiration period (in years)	10 years
Expected term	6 years 6 months
Risk free interest rate	1.90%
Expected volatility rate	22.12%
Expected dividend rate	0.00%
Tranche One | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	1 year
Tranche One | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	1 year