Equity Transactions - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
Feb. 24, 2021	Mar. 31, 2021	Mar. 31, 2020
Equity [Abstract]
Cash dividends declared per common share (in $ per share)	$ 0.82	$ 0.82	$ 0.67
Repurchases of common shares (in shares)		19,912
Weighted average price (in $ per share)		$ 251.07
Total cost of shares repurchased		$ 4,999	$ 10,000
Shares available for repurchase (in shares)		702,730

Aggregate dividends declared during the period for each share of common stock outstanding.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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