XML 106 R6.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]      
Cash dividend, per common share $ 0.80 $ 0.78 $ 0.71