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v3.21.2

Net Income Per Share (Narrative) (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |  |  |  |
Preferred Stock, Par Value Per Share | $ 1.00 |  |  | $ 1.00 |  | $ 1.00
Exercise price of warrant | 21.62 |  |  | 21.62 |  |
Exchange of preferred stock for common stock and common stock warrant |  | $ (100,000) |  |  |  |
Preferred Stock, Liquidation Preference Per Share | $ 1,347.29 |  |  | $ 1,347.29 |  | $ 1,291.04
Other Preferred Stock Dividends and Adjustments | $ 0 |  | $ 0 | $ 6,600,000 | $ 0 |
Interest expense | $ 0 |  | $ 0 | $ 0 | $ 100,000 |
Common Stock [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Conversion of Stock, Shares Converted | 231,276 |  |  |  |  |
Preferred Stock [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Conversion of Stock, Shares Converted | 3,873 |  |  |  |  |
Exchange of preferred stock for common stock and common stock warrant | $ 7,500,000 |  |  |  |  |
Warrant [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Conversion of Stock, Shares Converted | 250,000 |  |  |  |  |

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