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Consolidated Statements of Changes in Shareholders' Equity - (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in dollars per share)	$ 0.40	$ 0.22	$ 1.00	$ 0.66
Accounting Standards Update [Extensible List]					Accounting Standards Update 2019-11 [Member]

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Indicates amendment to accounting standards.

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