Annual report pursuant to Section 13 and 15(d)

VALUATION AND QUALIFYING ACCOUNTS (Details)

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VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Beginning balance $ 225,622 $ 225,622 $ 376,037
Charged (credited) to earnings 0 0 (150,415)
Deductions 0 0 0
Ending balance 225,622 225,622 225,622
SEC Schedule, 12-09, Allowance, Credit Loss      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Beginning balance 452,000 300,000 300,000
Charged (credited) to earnings (23,000) 152,000 0
Deductions 0 0 0
Ending balance $ 429,000 $ 452,000 $ 300,000