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Stockholders’ Equity - Narrative (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 07, 2019 | Jun. 30, 2020 | Jun. 30, 2020 | May 06, 2020 | Jun. 30, 2019 | Aug. 06, 2014
Class of Stock [Line Items] |  |  |  |  |  |
Value of additional shares authorized to be repurchased |  |  |  | $ 200,000,000 |  |
Remaining authorized repurchase amount |  |  |  | $ 333,000,000 |  | $ 133,000,000
Repurchases of common stock |  | $ 9,200,000 | $ 110,400,000 |  |  |
Average cost per share (in dollars per share) |  | $ 71.85 | $ 68.29 |  |  |
Employee Stock Purchase Plan | Employee Stock Option |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Number of exercisable options |  |  |  |  | 1,300,000 |
Minimum annual contributions per employee, percent |  | 1.00% | 1.00% |  |  |
Maximum annual contributions per employee, percent |  | 10.00% | 10.00% |  |  |
Maximum annual contributions per employee, amount |  |  | $ 25,000 |  |  |
Discount from market price |  |  | 15.00% |  |  |
Shares issued under employee stock purchase plan (in shares) |  |  | 13,291 |  |  |
Price per share (in dollars per share) |  | $ 61.64 | $ 61.64 |  |  |
Compensation costs |  |  | $ 300,000 |  |  |
Private Placement |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Sale of stock, number of shares issued (in shares) | 1,552,500 |  |  |  |  |
Sale of stock, price per share (in dollars per share) | $ 83.00 |  |  |  |  |
Gross proceeds from issuance of common stock | $ 128,900,000 |  |  |  |  |
Payments of stock issuance costs | 1,700,000 |  |  |  |  |
Common Stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Repurchases of common stock (in shares) |  | 100,000 | 1,600,000 |  |  |
Repurchases of common stock |  | $ 100,000 | $ 200,000 |  |  |
Common Stock | Trading Plan under Rule 10b5-1 |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Repurchases of common stock (in shares) |  |  | 1,100,000 |  |  |
Accrued Liabilities and Other Liabilities | Private Placement |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Payments of stock issuance costs | $ 300,000 |  |  |  |  |

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