Stockholders' Equity - Stock Repurchase Plan (Details) - 2016 Stock Incentive Plan - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Feb. 29, 2016
Equity, Class of Treasury Stock [Line Items]
Outstanding common stock repurchase program authorized amount (up to)			$ 50.0
Remaining authorized repurchase amount	$ 16.3	$ 16.3

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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