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COMMON STOCK, AUTHORIZED (Details) - shares
Mar. 31, 2019
Dec. 31, 2018
May 31, 2018
Apr. 30, 2018
Common stock, number of shares, par value and other disclosures        
Common stock, authorized 25,000,000 25,000,000 25,000,000 4,000,000
Common stock, issued 9,311,070 9,309,255    
Common stock, outstanding 9,311,070 9,309,255