Common Stock, Voting Rights, Votes Allowed Per Shareholders

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Number Of Classes Of Common Stock

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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.

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Aggregate number of common shares reserved for future issuance.

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Face amount or stated value per share of common stock.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Amount of stock repurchase plan authorized.

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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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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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Shareholders' Equity (Narrative) (Details)	12 Months Ended
Shareholders' Equity (Narrative) (Details)	Dec. 31, 2022 USD ($) vote class_of_common_stock $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Oct. 25, 2021 USD ($)	Sep. 30, 2021 shares	Dec. 31, 2020 shares	Dec. 31, 2019 shares
Class of Stock [Line Items]
Number of classes of common stock \| class_of_common_stock	2
Common stock, shares, outstanding (in shares)	31,100,000	32,100,000			32,300,000
Stock repurchase program, authorized amount \| $		$ 200,000,000	$ 200,000,000
Purchase of treasury shares \| $	$ 85,065,000	$ 24,375,000
2021 And 2022 Share Purchases
Class of Stock [Line Items]
Treasury stock, common shares (in shares)	1,308,003
Purchase of treasury shares \| $	$ 109,400,000
Treasury Stock, Common
Class of Stock [Line Items]
Common stock, shares, outstanding (in shares)	9,675,000	8,665,000
Treasury stock, common shares (in shares)					8,391,000	8,409,000
Purchase of treasury shares \| $	$ 85,065,000	$ 24,375,000
Purchases of common stock (in shares)	1,022,717	285,286
Common Class A
Class of Stock [Line Items]
Number of votes entitled to shareholders per share of common stock \| vote	1
Common stock, par or stated value per share (in dollars per share) \| $ / shares	$ 0.001	$ 0.001
Common stock, shares, issued (in shares)	40,785,434	40,760,577
Common stock, capital shares reserved for future issuance (in shares)		1,600,000		1,600,000
Common Class A \| IPO \| Number of Shares Reduced
Class of Stock [Line Items]
Common stock, capital shares reserved for future issuance (in shares)						1,600,000
Common Class A \| Selling Stockholders Public Offering
Class of Stock [Line Items]
Sale of stock, number of shares issued in transaction (in shares)		1,600,000
Sale of stock, price per share (in dollars per share) \| $ / shares		$ 75.9656
Common Class B
Class of Stock [Line Items]
Number of votes entitled to shareholders per share of common stock \| vote	10
Common stock, par or stated value per share (in dollars per share) \| $ / shares	$ 0.001	$ 0.001
Common stock, shares, outstanding (in shares)	0	104
Common stock, shares, issued (in shares)	0	104