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Equity (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 | Oct. 31, 2016 | Dec. 31, 2020 | Dec. 31, 2019
Common Stock Repurchase |  |  |  |
Repurchase of common stock authorized by Board of Directors |  |  | $ 60,000,000.0 |
Common stock repurchased, value |  |  | $ 1,510,000 | $ 3,567,000
Weighted average price per share (in dollars per share) |  |  | $ 27.24 | $ 49.29
Stock repurchase program, remaining authorized repurchase amount |  |  | $ 54,900,000 |
Redeemable preferred stock - shares issued (in shares) |  |  | 2,500,000 | 2,500,000
Dividend rate |  |  | 6.50% |
Redeemable preferred stock - par value (in dollars per share) |  |  | $ 0.01 | $ 0.01
Liquidation preference (in dollars per share) |  |  | 20.00 |
Redemption price (in dollars per share) |  |  | $ 20.00 |
Common Stock |  |  |  |
Common Stock Repurchase |  |  |  |
Shares repurchased (in shares) |  |  | 55,426 | 72,324
Common stock repurchased, value |  |  | $ 0 | $ 1,000
Series A-1 Preferred Stock |  |  |  |
Common Stock Repurchase |  |  |  |
Redeemable preferred stock - shares issued (in shares) |  | 1,000,000 |  |
Dividend rate |  | 6.50% |  |
Redeemable preferred stock - par value (in dollars per share) |  | $ 0.01 |  |
Purchase price (in dollars per share) |  | $ 20.00 |  |
Net proceeds after deducting investor fees |  | $ 19,800,000 |  |
Preferred stock dividends |  |  | $ 3,300,000 |
Series A-2 Preferred Stock |  |  |  |
Common Stock Repurchase |  |  |  |
Redeemable preferred stock - shares issued (in shares) | 1,500,000 |  |  |
Dividend rate | 6.50% |  |  |
Redeemable preferred stock - par value (in dollars per share) | $ 0.01 |  |  |
Purchase price (in dollars per share) | $ 20.00 |  |  |
Net proceeds after deducting investor fees | $ 29,700,000 |  |  |
Preferred stock dividends |  |  |  | $ 3,300,000

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