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Stockholders' Equity - Schedule of Common Stock (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued beginning balance (in shares)	65,881,233	68,470,050	66,456,663	69,065,491
Repurchase of common stock (in shares)	(181,250)	(1,419,984)	(925,251)	(2,167,401)
Awards effectively repurchased for required employee withholding taxes (in shares)	(49,391)	(67,491)	(117,619)	(118,617)
Shares issued ending balance (in shares)	65,864,116	67,292,864	65,864,116	67,292,864
Issuance of common stock from vested restricted stock units
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from vested restricted stock units (in shares)	130,560	168,621	346,518	342,250
Issuance of common stock from exercise of stock options
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from exercise of stock options (in shares)	8,894	11,136	29,735	40,609
Issuance of common stock for employee stock purchase plan
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for employee stock purchase plan (in shares)	74,070	130,532	74,070	130,532

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

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Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Number of share options (or share units) exercised during the current period.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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