v3.21.2

Shareholders' Equity - Narrative (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | May 06, 2021 | Mar. 03, 2021 | Dec. 31, 2020 | Feb. 21, 2017
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) | 150,000,000 |  | 150,000,000 |  |  |  |  |
Common stock, shares issued (in shares) | 92,233,783 |  | 92,233,783 |  |  |  | 89,815,175 |
Common stock, shares outstanding (in shares) | 86,420,221 |  | 86,420,221 |  |  |  | 84,801,161 |
Preference shares issued (in shares) | 18,600,000 |  | 18,600,000 |  |  |  |  |
Preference shares outstanding (in shares) | 18,600,000 |  | 18,600,000 |  |  |  |  |
Undesignated shares (in shares) | 39,166,217 |  | 39,166,217 |  |  |  |  |
Preference shares outstanding, held by non-affiliates (in shares) | 7,255,368 |  | 7,255,368 |  |  |  |  |
Shares repurchased for tax withholding (in shares) | 0 | 834 | 799,548 | 834 |  |  |  |
Shares repurchased for tax withholding, price per share (in dollars per share) |  | $ 1.13 | $ 2.95 | $ 1.13 |  |  |  |
Stock repurchase program, remaining authorized repurchase amount |  |  |  |  |  |  | $ 74,245,000 |
Treasury shares repurchased (in shares) | 0 | 0 | 0 | 0 |  |  |  |
Preference shares - Series A, C and D |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Stock repurchased, authorized amount (up to) |  |  |  |  | $ 50,000,000 | $ 100,000,000 |  |
Stock repurchase program, remaining authorized repurchase amount | $ 25,342,000 |  | $ 25,342,000 |  |  |  |  |
Common shares |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Stock repurchased, authorized amount (up to) |  |  |  |  |  |  |  | $ 100,000,000
Stock repurchase program, remaining authorized repurchase amount | $ 74,245,000 |  | $ 74,245,000 |  |  |  |  |

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