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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Repurchased of common stock shares | $ 315,851 |  | $ 200,000
Initial delivery of shares under accelerated share repurchase agreement, shares |  | 3,611,870 |
Net settlement of accelerated share repurchase agreement, shares | 1,001,472 |  |
Retained Earnings [Member] |  |  |
Cash dividends declared, per common share | $ 1.08 | $ 1.08 | $ 1.02

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