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Equity - Narrative (Details) $ / shares in Units, $ in Millions |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 16, 2021 swap shares | Sep. 30, 2021 $ / shares shares | Aug. 16, 2021 USD ($) | Dec. 31, 2020 $ / shares shares | Jul. 01, 2020 $ / shares shares
Class of Stock |  |  |  |  |
Common stock, shares authorized (in shares) |  | 250,000,000 |  | 250,000,000 |
Common stock, shares issued (in shares) |  | 36,674,000 |  | 35,928,000 |
Common stock, shares outstanding (in shares) |  | 36,674,000 |  | 35,928,000 |
Common stock, par value (in dollars per share) | $ / shares |  | $ 0.001 |  | $ 0.001 |
Unvested options (in shares) |  | 300,000 |  |  |
Stock repurchase program, authorized amount | $ |  |  | $ 25.0 |  |
Increase in percentage points over lowest percentage of stock owned (more than) | 0.50% |  |  |  |
Change in beneficial ownership, period | 3 years |  |  |  |
Increase in number of shares that triggers Rights to not be exercisable (in shares) | 1 |  |  |  |
Stock acquisition, acquiring entity Flip-Over Event, exercisable common stock rights times exercise price | swap | 2 |  |  |  |
Stock acquisition, acquiring entity Flip-Over Event, transfer threshold of assets, cash flow or earning power, percent | 5000.00% |  |  |  |
Series A Warrants |  |  |  |  |
Class of Stock |  |  |  |  |
Plan of reorganization, equity interest issuable (in shares) |  | 4,900,000 |  |  |
Number of common shares exercised for each warrant (in shares) |  | 1 |  |  |
Exercise price (in usd per share) | $ / shares |  | $ 41.34 |  |  |
Series B Warrants |  |  |  |  |
Class of Stock |  |  |  |  |
Plan of reorganization, equity interest issuable (in shares) |  | 2,100,000 |  |  |
Number of common shares exercised for each warrant (in shares) |  | 1 |  |  |
Exercise price (in usd per share) | $ / shares |  | $ 42.03 |  |  |
The Tax Benefits Preservation Plan |  |  |  |  |
Class of Stock |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  | $ 0.001
Number of rights per outstanding share of common stock |  |  |  |  | 1
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  | $ 0.001
Threshold for beneficial ownership declaration, percent | 4.90% |  |  |  |
The Tax Benefits Preservation Plan | Preferred Stock |  |  |  |  |
Class of Stock |  |  |  |  |
Exercise price (in usd per share) | $ / shares |  |  |  |  | $ 5.00
Restricted Stock |  |  |  |  |
Class of Stock |  |  |  |  |
Unvested awards (in shares) |  | 100,000 |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |
Class of Stock |  |  |  |  |
Unvested awards (in shares) |  | 400,000 |  |  |

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