Earnings per Common Share - Calculation of Weighted-Average Shares Excluded from Diluted EPS Due to Anti-Dilutive Effect (Details) - shares shares in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stock Compensation Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average stock awards excluded from diluted EPS due to the anti-dilutive effect calculated using the treasury stock method (in shares)	2	669	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.

No definition available.

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