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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Class A Common Stock Common Stock | Class A Common Stock | Class B Common Stock Common Stock | Class B Common Stock | Additional Paid-in Capital | Retained Earnings | Treasury Stock | Total
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2020 | $ 68 |  | $ 9 |  | $ 68,900 | $ 158,990 | $ (37,425) | $ 190,542 |
Balance, shares at Dec. 31, 2020 | 6,785 | 6,785 | 938 | 938 |  |  |  |  |
Net income (loss) | $ 0 |  | $ 0 |  | 0 | 758 | 0 | 758 |
Compensation expense related to restricted stock awards | 0 |  | 0 |  | 343 | 0 | 0 | 343 |
401(k) plan contribution | 0 |  | 0 |  | (200) | 0 | 421 | 221 |
Balance at Mar. 31, 2021 | $ 68 |  | $ 9 |  | 69,043 | 159,748 | (37,004) | 191,864 |
Balance, shares at Mar. 31, 2021 | 6,785 |  | 938 |  |  |  |  |  |
Balance at Dec. 31, 2020 | $ 68 |  | $ 9 |  | 68,900 | 158,990 | (37,425) | 190,542 |
Balance, shares at Dec. 31, 2020 | 6,785 | 6,785 | 938 | 938 |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  | 7,465 |
Balance at Sep. 30, 2021 | $ 68 |  | $ 9 |  | 69,748 | 164,543 | (37,004) | 197,364 |
Balance, shares at Sep. 30, 2021 | 6,785 |  | 938 |  |  |  |  |  |
Balance at Mar. 31, 2021 | $ 68 |  | $ 9 |  | 69,043 | 159,748 | (37,004) | 191,864 |
Balance, shares at Mar. 31, 2021 | 6,785 |  | 938 |  |  |  |  |  |
Net income (loss) | $ 0 |  | $ 0 |  | 0 | 3,253 | 0 | 3,253 |
Dividends declared per common share | 0 |  | 0 |  | 0 | (956) | 0 | (956) |
Compensation expense related to restricted stock awards | 0 |  | 0 |  | 357 | 0 | 0 | 357 |
Balance at Jun. 30, 2021 | $ 68 |  | $ 9 |  | 69,400 | 162,045 | (37,004) | 194,518 |
Balance, shares at Jun. 30, 2021 | 6,785 |  | 938 |  |  |  |  |  |
Net income (loss) | $ 0 |  | $ 0 |  | 0 | 3,454 | 0 | 3,454 |
Dividends declared per common share | 0 |  | 0 |  | 0 | (956) | 0 | (956) |
Compensation expense related to restricted stock awards | 0 |  | 0 |  | 348 | 0 | 0 | 348 |
Balance at Sep. 30, 2021 | $ 68 |  | $ 9 |  | 69,748 | 164,543 | (37,004) | 197,364 |
Balance, shares at Sep. 30, 2021 | 6,785 |  | 938 |  |  |  |  |  |
Balance at Dec. 31, 2021 | $ 68 |  | $ 9 |  | 70,035 | 164,246 | (37,439) | 196,919 | [1]
Balance, shares at Dec. 31, 2021 | 6,835 | 6,835 | 965 | 965 |  |  |  |  |
Net income (loss) | $ 0 |  | $ 0 |  | 0 | 1,204 | 0 | 1,204 |
Dividends declared per common share | 0 |  | 0 |  | 0 | (968) | 0 | (968) |
Compensation expense related to restricted stock awards | 0 |  | 0 |  | 339 | 0 | 0 | 339 |
401(k) plan contribution | 0 |  | 0 |  | (229) | 0 | 477 | 248 |
Balance at Mar. 31, 2022 | $ 68 |  | $ 9 |  | 70,145 | 164,482 | (36,962) | 197,742 |
Balance, shares at Mar. 31, 2022 | 6,835 |  | 965 |  |  |  |  |  |
Balance at Dec. 31, 2021 | $ 68 |  | $ 9 |  | 70,035 | 164,246 | (37,439) | 196,919 | [1]
Balance, shares at Dec. 31, 2021 | 6,835 | 6,835 | 965 | 965 |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  | 4,923 |
Balance at Sep. 30, 2022 | $ 77 |  | $ 0 |  | 71,532 | 153,373 | (36,969) | 188,013 |
Balance, shares at Sep. 30, 2022 | 7,800 | 7,800 | 0 | 0 |  |  |  |  |
Balance at Mar. 31, 2022 | $ 68 |  | $ 9 |  | 70,145 | 164,482 | (36,962) | 197,742 |
Balance, shares at Mar. 31, 2022 | 6,835 |  | 965 |  |  |  |  |  |
Net income (loss) | $ 0 |  | $ 0 |  | 0 | 3,823 | 0 | 3,823 |
Dividends declared per common share | 0 |  | 0 |  | 0 | (1,210) | 0 | (1,210) |
Compensation expense related to restricted stock awards | 0 |  | 0 |  | 338 | 0 | 0 | 338 |
Balance at Jun. 30, 2022 | $ 68 |  | $ 9 |  | 70,483 | 167,095 | (36,962) | 200,693 |
Balance, shares at Jun. 30, 2022 | 6,835 |  | 965 |  |  |  |  |  |
Net income (loss) | $ 0 |  | $ 0 |  | 0 | (104) | 0 | (104) |
Conversion of shares from Class B to Class A | $ 9 |  | $ (9) |  | 0 | 0 | 0 | 0 |
Conversion of shares from Class B to Class A (in shares) | 965 |  | (965) |  |  |  |  |  |
Dividends declared per common share | $ 0 |  | $ 0 |  | 0 | (13,618) | 0 | (13,618) |
Compensation expense related to restricted stock awards | 0 |  | 0 |  | 1,049 | 0 | 0 | 1,049 |
Purchase of shares held in treasury | 0 |  | 0 |  | 0 | 0 | (7) | (7) |
Balance at Sep. 30, 2022 | $ 77 |  | $ 0 |  | $ 71,532 | $ 153,373 | $ (36,969) | $ 188,013 |
Balance, shares at Sep. 30, 2022 | 7,800 | 7,800 | 0 | 0 |  |  |  |  |
[1] | The balance sheet at December 31, 2021 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

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