XML 142 R126.htm IDEA: XBRL DOCUMENT v3.8.0.1
Parent Company Condensed Financial Information - Statements of Net Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Condensed Income Statements, Captions [Line Items]                      
Total Income $ 67,855 $ 66,723 $ 64,914 $ 61,150 $ 59,096 $ 57,808 $ 55,850 $ 55,019 $ 260,642 $ 227,774 $ 203,548
Interest expense on long-term debt                 463 670 790
Total Expense 37,947 36,553 36,597 36,808 35,625 34,439 34,753 38,416 147,907 143,232 136,717
Provision for income taxes $ 22,255 $ 8,883 $ 8,604 $ 6,695 $ 6,510 $ 7,367 $ 5,496 $ 5,931 46,437 25,305 24,398
Net Income                 72,968 71,392 67,081
Parent Company                      
Condensed Income Statements, Captions [Line Items]                      
Dividends from subsidiaries                 36,169 34,134 75,413
Investment income                 22 17 19
Total Income                 36,191 34,151 75,432
Interest expense on long-term debt                 955 854 773
Other expenses                 3,801 4,012 3,687
Total Expense                 4,756 4,866 4,460
Income before income tax and undistributed net income of subsidiaries                 31,435 29,285 70,972
Provision for income taxes                 (1,596) (1,697) (1,549)
Income before income tax and undistributed net income of subsidiaries                 33,031 30,982 72,521
Bank subsidiary                 40,877 40,051 (5,064)
Nonbank subsidiaries                 (940) 359 (376)
Net Income                 $ 72,968 $ 71,392 $ 67,081