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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity [Abstract]
Repurchase of treasury stock (in shares)									1,285,696	1,897,322
Shares withheld for tax withholding obligations for the vesting of restricted stock awards (in shares)									151,332	227,208
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	2,000,000								2,000,000
Remaining number of shares authorized to be repurchased (in shares)	1,128,137								1,128,137
Payments of Dividends [Abstract]
Dividends declared per share of common stock (in dollars per share)	$ 0.40	$ 0.40	$ 0.40	$ 0.40	$ 0.30	$ 0.30	$ 0.30	$ 0.30
Dividends paid									$ 61,869	$ 48,622	$ 33,408
Dividends, Common Stock, Cash									$ (61,900)	$ (48,600)
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock, authorized (in shares)	20,000,000								20,000,000

X

- Definition

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

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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

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

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