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INVESTMENT SECURITIES (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Amortized cost, as adjusted | $ 27,998,810 | $ 19,853,860
Gross unrealized holding gains | 0 | 3,270
Gross unrealized holding losses | 35,235 | 2,492
Estimated fair value | 27,963,575 | 19,854,638
Short-term Investments [Member] | US Government Agencies Debt Securities [Member] |  |
Amortized cost, as adjusted | 27,998,810 | 19,853,860
Gross unrealized holding gains | 0 | 3,270
Gross unrealized holding losses | 35,235 | 2,492
Estimated fair value | $ 27,963,575 | $ 19,854,638

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