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EARNINGS PER SHARE CALCULATIONS - Summary of EPS Calculations, Basic (Details) - $ / shares
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Earnings Per Share [Abstract]    
Earnings per common share from continuing operations - basic (in dollars per share) $ 0.23 $ 0.47
Earnings per common share from discontinued operations - basic (in dollars per share) 0.00 0.00
Net income attributable to common stockholders, basic (in dollars per share) $ 0.23 $ 0.47