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Common Stock and Treasury Stock | 6 Months Ended
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Jun. 30, 2021
Common Stock and Treasury Stock |
Common Stock and Treasury Stock | 5. Common Stock and Treasury Stock The following summarizes information relating to the number of shares of our common stock issued in connection with stock transactions through June 30, 2021: ​
​ | ​ | ​ | ​ | ​
​ | ​ | Common Stock Issued
​ |  | Class A |  | Class B
​ | ​ | (Shares in thousands)
Balance, January 1, 2020 | ​ | 6,771 | ​ | 954
Conversion of shares |  | 16 |  | (16)
Issuance of restricted stock |  | — |  | —
Forfeiture of restricted stock |  | (2) |  | —
Balance, December 31, 2020 |  | 6,785 |  | 938
Balance, June 30, 2021 |  | 6,785 |  | 938
​ We have a Stock Buy-Back Program to allow us to purchase up to $75.8 million of our Class A Common Stock. As of June 30, 2021, we have remaining authorization of $18.8 million for future repurchases of our Class A Common Stock. On September 14, 2017, the Board of Directors authorized the repurchase of our Class A Common Stock under our trading plan adopted pursuant to Securities and Exchange Commission Rule 10b5-1. The Rule 10b5-1 repurchase plan allows us to repurchase our shares during periods when we would normally not be active in the market due to our internal trading blackout periods. Under the plan, we may repurchase our Class A Common Stock in any combination of open market, block transactions and privately negotiated transactions subject to market conditions, legal requirements including applicable SEC regulations (which include certain price, market, volume and timing constraints), specific repurchase instructions and other corporate considerations. Purchases under the plan are funded by cash on our balance sheet. The plan does not obligate us to acquire any particular amount of Class A Common Stock. Our original purchase authorization was effective until September 1, 2018 and has been extended several times, with the most recent extension being through May 28, 2020. Given the unprecedented uncertainty surrounding the COVID-19 virus and the resulting economic issues we have halted the directions for any additional buybacks under our plan. During the three and six months ended June 30, 2021 no shares were repurchased under the Stock Buy-Back Program. During the three and six months ended June 30, 2020, approximately 800 and 1,600 shares, respectively, were repurchased for $21,000 and $41,000, respectively, related to the Stock Buy-Back Program.

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