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8. Stockholders' Equity (Details Narrative) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Dividends Declared | $ 1,075,962 | $ 1,068,375
Stock-based compensation expense related to stock options is net of estimated forfeitures | $ 1,000 | 2,000
Closing price of common stock | $ 14.74 |
Total intrinsic value of options exercised | $ 11,413 |
Stock-based compensation, restricted stock awards | $ 309,000 | $ 106,000
2014 Plan [Member] |  |
Shares reserved | 426,822 |

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