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Note 8 - Treasury Stock	12 Months Ended
Note 8 - Treasury Stock	Dec. 31, 2020
Notes to Financial Statements
Treasury Stock [Text Block]	Note 8. Treasury Stock During 2012, the Board of Directors authorized a stock repurchase program whereby the Company could repurchase up to 500,000 shares of its outstanding common stock. During 2013, the Board of Directors renewed and extended the Company's share repurchase authority to enable it to repurchase up to an aggregate of 1,000,000 shares of common stock. In 2016, the Board of Directors increased by an additional 500,000 shares the number of shares of the Company's common stock, which may be repurchased under its stock repurchase program to an aggregate of 1,500,000 shares. The shares may be repurchased from time to time in the open market or through privately negotiated transactions at prices the Company deems appropriate. The program does not obligate the Company to acquire any particular amount of common stock and may be modified or suspended at any time at the Company's discretion. From 2012 through December 31, 2020, the Company repurchased an aggregate of 1,314,694 shares of common stock at an average price of approximately $4.85 per share, for a total of approximately $6.4 million in repurchases under the stock repurchase program. During the year ended December 31, 2020, 4,833 shares were repurchased at an average price of $4.04 per share. The repurchase of an additional 185,306 shares is presently authorized under the stock repurchase program.