Annual report pursuant to Section 13 and 15(d)

Dividends (Detail)

v3.10.0.1
Dividends (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dividend Declared [Line Items]      
Amount per Share of Common Stock [1] $ 1.28 $ 1.16 $ 1.08
Total Dividends [2] $ 150,116 $ 135,637 $ 126,044
First Quarter Dividend      
Dividend Declared [Line Items]      
Declaration Date Feb. 23, 2018 Feb. 23, 2017 Feb. 24, 2016
Record Date Mar. 08, 2018 Mar. 08, 2017 Mar. 07, 2016
Payable Date Mar. 22, 2018 Mar. 20, 2017 Mar. 18, 2016
Amount per Share of Common Stock [1] $ 0.32 $ 0.29 $ 0.27
Total Dividends [2] $ 37,471 $ 33,912 $ 31,544
Second Quarter Dividend      
Dividend Declared [Line Items]      
Declaration Date May 25, 2018 May 25, 2017 May 26, 2016
Record Date Jun. 08, 2018 Jun. 08, 2017 Jun. 08, 2016
Payable Date Jun. 22, 2018 Jun. 22, 2017 Jun. 22, 2016
Amount per Share of Common Stock [1] $ 0.32 $ 0.29 $ 0.27
Total Dividends [2] $ 37,523 $ 33,904 $ 31,459
Third Quarter Dividend      
Dividend Declared [Line Items]      
Declaration Date Aug. 23, 2018 Aug. 10, 2017 Aug. 18, 2016
Record Date Sep. 04, 2018 Aug. 31, 2017 Aug. 31, 2016
Payable Date Sep. 18, 2018 Sep. 13, 2017 Sep. 13, 2016
Amount per Share of Common Stock [1] $ 0.32 $ 0.29 $ 0.27
Total Dividends [2] $ 37,530 $ 33,911 $ 31,473
Fourth Quarter Dividend      
Dividend Declared [Line Items]      
Declaration Date Nov. 15, 2018 Nov. 17, 2017 Nov. 16, 2016
Record Date Dec. 04, 2018 Dec. 01, 2017 Dec. 02, 2016
Payable Date Dec. 18, 2018 Dec. 15, 2017 Dec. 16, 2016
Amount per Share of Common Stock [1] $ 0.32 $ 0.29 $ 0.27
Total Dividends [2] $ 37,592 $ 33,910 $ 31,568
[1] Beginning with the dividend declared on February 24, 2016, the Company’s board of directors raised the quarterly dividend to $0.27 per common share. Beginning with the dividend declared on February 23, 2017, the Company’s board of directors raised the quarterly dividend to $0.29 per common share. Beginning with the dividend declared on February 23, 2018, the Company’s board of directors raised the quarterly dividend to $0.32 per common share.
[2] Of the dividends recorded during 2016, 2017 and 2018, $554, $558 and $624, respectively, were related to outstanding restricted stock units and will not be paid until such units vest. See Note 15.