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Stockholders' Equity - Summary of Status of Outstanding RSU Awards (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Weighted Average Grant Date Fair Value
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 29.12
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	458,915
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested and Deferred Share Balance	33,663
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Grant Date Fair Value	$ 23.26
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 2.9	$ 2.1	$ 2.0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedandDeferredWtdAvgGrantDateFairValue	$ 7.31
Number of share
Beginning Balance	190,190
Granted	377,822
Vested	(81,214)
Forfeited	(61,546)
Ending Balance	425,252	190,190
Weighted Average Grant Date Fair Value
Beginning Balance	$ 31.76
Granted	23.46
Vested	35.12
Forfeited	26.41
Ending Balance	$ 24.52	$ 31.76
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 7.0
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	194,345
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested and Deferred Share Balance	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Grant Date Fair Value	$ 27.76
Number of share
Beginning Balance	177,032
Granted	120,382
Vested	0
Forfeited	(103,069)
Ending Balance	194,345	177,032
Weighted Average Grant Date Fair Value
Beginning Balance	$ 29.09
Granted	27.67
Vested	0
Forfeited	29.92
Ending Balance	$ 27.76	$ 29.09

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