Equity Compensation Plans - Modifications to Stock-Based Awards (Details Textual) - Separation Agreement - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
Aug. 31, 2020	Sep. 30, 2020	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number	198,000
Reversal of stock-based compensation expense		$ 2.7
Fair value of modified award recognized			$ 8.4

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.

No definition available.

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