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Equity-based Compensation - Additional Information (Details) - USD ($)	1 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 15, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Conversion of options to purchase common stock, description		1:1 basis
Dividend yield		0.00%
Stock option granted		67,232
Weighted average grant date fair value of options granted		$ 15.62
Excess tax benefits in relation to equity-based compensation		$ 600,000	$ 0	$ 0
General and Administrative Expense
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity-based compensation cost		$ 2,100,000	1,400,000	$ 900,000
Class A Common Stock | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock unit granted		13,130
Weighted average grant date fair value granted		$ 19.04
2013 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity incentive plans award term		10 year
Equity incentive plans vesting period		5 years
Incremental equity-based compensation expense			$ 0
Stock option granted		67,232
2013 Equity Incentive Plan | Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total unrecognized compensation cost		$ 5,900,000
Total unrecognized compensation cost to be recognized, weighted average service period		3 years 9 months 18 days
Amendment to 2013 Equity Incentive Plan | Common Class A Unit | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for issuance					6,207,978
2019 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Increase in number of shares reserved for future issuance, description		The number of shares that will be available for issuance under our 2019 Plan also will increase annually on the first day of each year beginning in 2020, in an amount equal to the least of: (1) 6,900,000 shares, (2) 5% of the outstanding shares of all classes of our common stock as of the last day of the immediately preceding year and (3) such other amount as our board of directors may determine
Increase in number of shares reserved for future issuance, shares	6,900,000
Percentage of number of shares of common stock outstanding	5.00%
2019 Equity Incentive Plan | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total unrecognized compensation cost		$ 5,900,000
Total unrecognized compensation cost to be recognized, weighted average service period		3 years 9 months 18 days
2019 Equity Incentive Plan | Class A Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance	4,500,000	4,500,000
2019 Equity Incentive Plan | Class A Common Stock | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock unit granted		13,130
Weighted average grant date fair value granted		$ 19.04

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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