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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Class A Common Stock Common Stock | Class B Common Stock Common Stock | Additional Paid-in Capital | Retained Earnings | Treasury Stock | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2018 | $ 67 | $ 9 | $ 64,795 | $ 156,689 | $ (36,561) | $ 184,999
Balance, shares at Dec. 31, 2018 | 6,732 | 923 |  |  |  |
Net income (loss) | $ 0 | $ 0 | 0 | 13,279 | 0 | 13,279
Conversion of shares from Class B to Class A | $ 0 | $ 0 | 0 | 0 | 0 | 0
Conversion of shares from Class B to Class A (in shares) | 13 | (13) |  |  |  |
Issuance of restricted stock | $ 1 | $ 0 | 0 | 0 | 0 | 1
Issuance of restricted stock (in shares) | 29 | 44 |  |  |  |
Forfeiture of restricted stock | $ 0 | $ 0 | 0 | 0 | 0 | 0
Forfeiture of restricted stock (in shares) | (3) | 0 |  |  |  |
Dividends declared per common share | $ 0 | $ 0 | 0 | (7,146) | 0 | (7,146)
Compensation expense related to restricted stock awards | 0 | 0 | 2,129 | 0 | 0 | 2,129
Purchase of shares held in treasury | 0 | 0 | 0 | 0 | (1,172) | (1,172)
401(k) plan contribution | 0 | 0 | (113) | 0 | 375 | 262
Balance at Dec. 31, 2019 | $ 68 | $ 9 | 66,811 | 162,822 | (37,358) | 192,352
Balance, shares at Dec. 31, 2019 | 6,771 | 954 |  |  |  |
Net income (loss) | $ 0 | $ 0 | 0 | (1,913) | 0 | (1,913)
Conversion of shares from Class B to Class A | $ 0 | $ 0 | 0 | 0 | 0 | 0
Conversion of shares from Class B to Class A (in shares) | 16 | (16) |  |  |  |
Forfeiture of restricted stock | $ 0 | $ 0 | 0 | 0 | 0 | 0
Forfeiture of restricted stock (in shares) | (2) | 0 |  |  |  |
Dividends declared per common share | $ 0 | $ 0 | 0 | (1,919) | 0 | (1,919)
Compensation expense related to restricted stock awards | 0 | 0 | 2,221 | 0 | 0 | 2,221
Purchase of shares held in treasury | 0 | 0 | 0 | 0 | (449) | (449)
401(k) plan contribution | 0 | 0 | (132) | 0 | 382 | 250
Balance at Dec. 31, 2020 | $ 68 | $ 9 | 68,900 | 158,990 | (37,425) | 190,542
Balance, shares at Dec. 31, 2020 | 6,785 | 938 |  |  |  |
Net income (loss) | $ 0 | $ 0 | 0 | 11,157 | 0 | 11,157
Conversion of shares from Class B to Class A | $ 0 | $ 0 | 0 | 0 | 0 | 0
Conversion of shares from Class B to Class A (in shares) | 12 | (12) |  |  |  |
Issuance of restricted stock | $ 0 | $ 0 | 0 | 0 | 0 | 0
Issuance of restricted stock (in shares) | 38 | 39 |  |  |  |
Dividends declared per common share | $ 0 | $ 0 | 0 | (5,901) | 0 | (5,901)
Compensation expense related to restricted stock awards | 0 | 0 | 1,335 | 0 | 0 | 1,335
Purchase of shares held in treasury | 0 | 0 | 0 | 0 | (435) | (435)
401(k) plan contribution | 0 | 0 | (200) | 0 | 421 | 221
Balance at Dec. 31, 2021 | $ 68 | $ 9 | $ 70,035 | $ 164,246 | $ (37,439) | $ 196,919
Balance, shares at Dec. 31, 2021 | 6,835 | 965 |  |  |  |

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