Quarterly report pursuant to Section 13 or 15(d)

SUBSEQUENT EVENT (Details)

v3.10.0.1
SUBSEQUENT EVENT (Details) - $ / shares
3 Months Ended 9 Months Ended
Oct. 21, 2018
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Subsequent Event [Line Items]          
Cash dividends declared per common share (in dollars per share)   $ 0.40 $ 0.36 $ 2.43 $ 1.25
Subsequent Event          
Subsequent Event [Line Items]          
Cash dividends declared per common share (in dollars per share) $ 0.16        
Special cash dividends declared (in dollars per share) $ 0.18