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STOCKHOLDERS' EQUITY (Dividends) (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Jan. 23, 2012
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Cash Dividends [Abstract]          
Cash dividend paid   $ 0 $ 1,100,000 $ 1,100,000 $ 1,100,000
Dividend payable to holders, per share     $ 0.06 $ 0.06 $ 0.06
Dividend Reinvestment Plan          
Registered shares of common stock pursuant to Plan (in shares) 3,000,000        
Percentage of purchase price per share (in hundredths) 95.00%        
Sales price per share (in dollars per share) $ 9.50        
Payment of sales commission or dealer manager fee $ 0        
Notice period for amendments to Plan   30 days   30 days  
Common stock issued under plan   $ 17,400,000   $ 17,400,000  
Common stock issued under plan (in shares)   1,834,147   1,834,147  
Stock issued during period, shares plan (in shares)   0      
Dividend reinvestments       $ 0  
Previously Reported          
Dividend Reinvestment Plan          
Sales price per share (in dollars per share) $ 10.00