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v3.21.1

Stockholders’ Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020 | Jun. 30, 2020 | May 06, 2020 | Aug. 06, 2014
Class of Stock [Line Items] |  |  |  |  |  |
Remaining authorized repurchase amount |  |  |  |  |  | $ 133.3
Repurchases of common stock | $ 47.1 | $ 101.2 |  |  |  |
Average cost per share (in dollars per share) | $ 79.36 | $ 67.98 |  |  |  |
Weighted-average Remaining Lease Term - Operating Leases | 6 years 7 months 6 days | 7 years |  |  |  |
Weighted-average Discount Rate - Finance Leases | 4.00% | 4.00% |  |  |  |
Weighted-average Discount Rate - Operating Leases | 4.00% | 3.80% |  |  |  |
Value of additional shares authorized to be repurchased |  |  |  |  | $ 200.0 |
Employee Stock Purchase Plan | Employee Stock Option |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Number of exercisable options |  |  |  | 1,300,000 |  |
Shares issued under employee stock purchase plan (in shares) | 14,878 | 13,214 |  |  |  |
Price per share (in dollars per share) | $ 67.76 | $ 63.21 |  |  |  |
Compensation costs | $ 0.2 | $ 0.1 |  |  |  |
Common Stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Remaining authorized repurchase amount | $ 286.2 |  | $ 333.3 |  |  |
Repurchases of common stock (in shares) | 600,000 | 1,500,000 |  |  |  |
Repurchases of common stock | $ 0.0 | $ 0.1 |  |  |  |
Weighted-average Remaining Lease Term - Finance Leases | 6 months | 1 year 4 months 24 days |  |  |  |

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