Capital Structure - Additional Information (Details)	6 Months Ended
	Jun. 30, 2020 class_of_common_stock	Dec. 16, 2019 USD ($)	Feb. 28, 2017 USD ($)
Equity, Class of Treasury Stock [Line Items]
Number of classes of common stock outstanding | class_of_common_stock	1
2017 Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Additional authorized amount			$ 100,000,000
Authorized increase in repurchase amount, 2018			40,000,000
Authorized increase in repurchase amount, 2019			40,000,000
2017 Repurchase Program | Minimum
Equity, Class of Treasury Stock [Line Items]
Authorized increase in repurchase amount			20,000,000
2017 Repurchase Program | Maximum
Equity, Class of Treasury Stock [Line Items]
Authorized increase in repurchase amount			$ 40,000,000
2019 Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock authorized, maximum		$ 200,000,000