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Stockholders' Equity (Tables) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Class of Stock [Line Items] |  |  |
Conversion of Stock, Shares Converted | 398,262 | 288,620 |
Stock issued during period | $ 23.1 |  |
Common Stock, Shares, Issued | 12,109,389 |  |
Preferred Stock, Shares Issued | 104,574 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | 107,000 | 7,500 |
Preferred Stock, Shares Outstanding | 41,720 | 104,574 | 104,574
Preferred Series B [Member] |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Shares Issued | 41,720 | 104,574 |
Stock Repurchased and Retired During Period, Shares | (62,854) |  |
Preferred Stock, Shares Outstanding | 41,720 |  |
Common Class A [Member] |  |  |
Class of Stock [Line Items] |  |  |
Common Stock, Shares, Outstanding | 11,390,189 | 8,347,427 | 8,031,307
Conversion of Stock, Shares Converted | 398,262 | 288,620 |
Stock Issued During Period, Shares, New Issues | 2,537,500 | 20,000 |
Common Stock, Shares, Issued | 11,390,189 | 8,347,427 |
Common Class B [Member] |  |  |
Class of Stock [Line Items] |  |  |
Common Stock, Shares, Outstanding | 719,200 | 1,117,462 | 1,406,082
Conversion of Stock, Shares Converted | (398,262) | (288,620) |
Common Stock, Shares, Issued | 719,200 | 1,117,462 |

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