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v3.21.2

Basis of Preparation - Narratives (Details) $ / shares in Units, shares in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2021 USD ($) location $ / shares | Sep. 30, 2020 USD ($) $ / shares | Mar. 31, 2020 USD ($) $ / shares shares | Sep. 30, 2021 USD ($) location $ / shares | Sep. 30, 2020 USD ($) $ / shares | Jan. 01, 2021 USD ($) | Dec. 31, 2020 USD ($) | Mar. 11, 2020 USD ($) | Nov. 06, 2017 USD ($)
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |
Number of locations (location) | location |  | 25 |  |  | 25 |  |  |  |  |
Shares authorized for repurchase |  |  |  |  |  |  |  | $ 75,000,000 | $ 75,000,000 |
Shares repurchased during the period (shares) | shares |  |  |  | 760 |  |  |  |  |  |
Weighted average share price of shares repurchased (usd per share) | $ / shares |  |  |  | $ 25.40 |  |  |  |  |  |
Common stock repurchases | [1] |  |  | $ 19,300,000 |  |  |  |  |  |
Interest expense, net |  | $ 3,200,000 | $ 6,500,000 |  | $ 7,400,000 | $ 21,200,000 |  |  |  |
Income from continuing operations |  | $ 14,900,000 | $ 15,600,000 |  | $ 47,000,000.0 | $ 31,400,000 |  |  |  |
Income from continuing operations basic (usd per share) | $ / shares |  | $ 0.42 | $ 0.44 |  | $ 1.32 | $ 0.89 |  |  |  |
Income from continuing operations diluted (usd per share) | $ / shares |  | $ 0.36 | $ 0.43 |  | $ 1.15 | $ 0.88 |  |  |  |
Scenario, Plan |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |
Interest expense, net |  | $ 2,100,000 |  |  | $ 6,200,000 |  |  |  |  |
Income from continuing operations |  | $ 13,300,000 |  |  | $ 42,200,000 |  |  |  |  |
Income from continuing operations basic (usd per share) | $ / shares |  | $ 0.05 |  |  | $ 0.14 |  |  |  |  |
Income from continuing operations diluted (usd per share) | $ / shares |  | $ 0.04 |  |  | $ 0.12 |  |  |  |  |
Convertible Notes, due 2024 | Convertible Debt |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |
Principal amount |  | $ 258,800,000 | $ 258,800,000 |  | $ 258,800,000 | $ 258,800,000 |  | 258,800,000 |  | $ 258,800,000
Interest expense, net |  | 600,000 | $ 600,000 |  | 1,900,000 | $ 1,900,000 |  |  |  |
Unamortized discount |  | 0 |  |  | 0 |  |  | 34,800,000 |  |
Unamortized debt issuance costs |  | $ 3,000,000.0 |  |  | $ 3,000,000.0 |  | $ 3,900,000 | $ 3,100,000 |  |
[1] | Includes $19.3 in shares repurchased through our share repurchase program. On March 11, 2021, the share repurchase program expired with no further repurchases. Refer to Note 1, “Basis of Preparation” for further information.

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