Annual report pursuant to Section 13 and 15(d)

INVESTMENTS HELD-TO-MATURITY (Details)

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INVESTMENTS HELD-TO-MATURITY (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Investments [Abstract]    
Investments held-to-maturity $ 0 $ 0
Interest and investment income 66,000 253,000
Other than temporary impairment $ 0 $ 0