Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 4)

v3.10.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 4) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]                      
Net income available to stockholders $ 50,968 $ 66,628 $ 65,542 $ 48,525 $ 33,735 $ 51,430 $ 53,689 $ 40,270 $ 231,663 $ 179,124 $ 167,369
Less: Dividends paid                 (152,742) (122,017) (109,002)
Undistributed earnings for the period                 $ 78,921 $ 57,107 $ 58,367
Basic and diluted shares outstanding:                      
Basic and diluted shares outstanding (in shares)                 327,291 326,981 327,366
Basic earnings per share:                      
Basic (in dollars per share) $ 0.16 $ 0.20 $ 0.20 $ 0.15 $ 0.10 $ 0.16 $ 0.17 $ 0.12 $ 0.71 $ 0.55 $ 0.51
Diluted earnings per share:                      
Diluted (in dollars per share) $ 0.16 $ 0.20 $ 0.20 $ 0.15 $ 0.10 $ 0.16 $ 0.17 $ 0.12 $ 0.71 $ 0.55 $ 0.51
Common Stock [Member]                      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]                      
Less: Dividends paid                 $ (151,458) $ (120,930) $ (107,880)
Undistributed earnings for the period                 $ 78,255 $ 56,567 $ 57,722
Basic and diluted shares outstanding:                      
Basic and diluted shares outstanding (in shares)                 324,529 323,890 323,745
Basic earnings per share:                      
Distributed earnings (in dollars per share)                 $ 0.47 $ 0.37 $ 0.33
Undistributed earnings (in dollars per share)                 0.24 0.18 0.18
Basic (in dollars per share)                 0.71 0.55 0.51
Diluted earnings per share:                      
Distributed earnings (in dollars per share)                 0.47 0.37 0.33
Undistributed earnings (in dollars per share)                 0.24 0.18 0.18
Diluted (in dollars per share)                 $ 0.71 $ 0.55 $ 0.51
Participating Securities [Member]                      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]                      
Less: Dividends paid                 $ (1,284) $ (1,087) $ (1,122)
Undistributed earnings for the period                 $ 666 $ 540 $ 645
Basic and diluted shares outstanding:                      
Basic and diluted shares outstanding (in shares)                 2,762 3,091 3,619
Basic earnings per share:                      
Distributed earnings (in dollars per share)                 $ 0.47 $ 0.35 $ 0.31
Undistributed earnings (in dollars per share)                 0.24 0.18 0.18
Basic (in dollars per share)                 0.71 0.53 0.49
Diluted earnings per share:                      
Distributed earnings (in dollars per share)                 0.47 0.35 0.31
Undistributed earnings (in dollars per share)                 0.24 0.18 0.18
Diluted (in dollars per share)                 $ 0.71 $ 0.53 $ 0.49