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Stockholders' Equity and Earnings Per Share (Textual) (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 USD ($) vote shares | Dec. 31, 2018 USD ($) shares | Nov. 06, 2019 USD ($)
2019 and 2018 Stock Repurchase Programs |  |  |
Class of Stock [Line Items] |  |  |
Aggregate purchase price | $ 3,000,000 |  |
2019 Stock Repurchase Program |  |  |
Class of Stock [Line Items] |  |  |
Authorized amount available for repurchase |  |  | $ 25,000,000
Class A Common Stock |  |  |
Class of Stock [Line Items] |  |  |
Votes per share | vote | 1 |  |
Common stock, shares authorized (in shares) | shares | 25,000,000 |  |
Treasury stock (in shares) | shares | 2,817,714 | 2,862,442 |
Class A Common Stock | 2018 Stock Repurchase Program |  |  |
Class of Stock [Line Items] |  |  |
Treasury stock, value | $ 44,476 |  |
Aggregate purchase price |  | $ 1,300,000 |
Treasury stock, shares acquired (in shares) | shares |  | 39,047 |
Class A Common Stock | 2019 Stock Repurchase Program |  |  |
Class of Stock [Line Items] |  |  |
Treasury stock, value | $ 28,094 |  |
Class B Common Stock |  |  |
Class of Stock [Line Items] |  |  |
Votes per share | vote | 10 |  |
Common stock, shares authorized (in shares) | shares | 6,756,176 |  |

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