Parent Holding Company Information (Condensed) (Tables)

12 Months Ended

Dec. 31, 2018

Condensed Financial Information Disclosure [Abstract]

Condensed Statements of Financial Condition

Condensed Statements of Financial Condition

(Dollars in thousands)	December 31, 2018			December 31, 2017
Assets
Cash on hand and in banks	$	22,000		9,304
Interest bearing cash deposits	42,299			38,420
Cash and cash equivalents	64,299			47,724
Other assets	12,639			8,871
Investment in subsidiaries	1,612,115			1,281,392
Total assets	$	1,689,053		1,337,987
Liabilities and Stockholders’ Equity
Dividends payable	$	25,726		265
Subordinated debentures	134,051			126,135
Other liabilities	13,422			12,530
Total liabilities	173,199			138,930
Common stock	845			780
Paid-in capital	1,051,253			797,997
Retained earnings	473,183			402,259
Accumulated other comprehensive loss	(9,427		)	(1,979	)
Total stockholders’ equity	1,515,854			1,199,057
Total liabilities and stockholders’ equity	$	1,689,053		1,337,987

Condensed Statements of Operations and Comprehensive Income

Condensed Statements of Operations and Comprehensive Income

	Years ended
(Dollars in thousands)	December 31, 2018		December 31, 2017	December 31, 2016
Income
Dividends from subsidiaries	$	153,574	119,000	108,350
Gain on sale of investments	—		3	—
Intercompany charges for services	16,523		14,299	12,248
Other income	1,284		225	311
Total income	171,381		133,527	120,909
Expenses
Compensation and employee benefits	20,873		17,864	15,665
Other operating expenses	12,201		10,425	7,701
Total expenses	33,074		28,289	23,366
Income before income tax benefit and equity in undistributed net income of subsidiaries	138,307		105,238	97,543
Income tax benefit	3,773		2,983	4,040
Income before equity in undistributed net income of subsidiaries	142,080		108,221	101,583
Equity in undistributed net income of subsidiaries	39,798		8,156	19,548
Net Income	$	181,878	116,377	121,131
Comprehensive Income	$	174,430	122,131	111,760

Condensed Statements of Cash Flows

Condensed Statements of Cash Flows

	Years ended
(Dollars in thousands)	December 31, 2018			December 31, 2017		December 31, 2016
Operating Activities
Net income	$	181,878		116,377		121,131
Adjustments to reconcile net income to net cash provided by operating activities:
Subsidiary income in excess of dividends distributed	(39,798		)	(8,156	)	(19,548	)
Amortization of purchase accounting adjustments	13			143		143
Gain on sale of investments	—			(3	)	—
Stock-based compensation, net of tax benefits	1,219			1,460		804
Net change in other assets and other liabilities	(3,222		)	5,051		(297	)
Net cash provided by operating activities	140,090			114,872		102,233
Investing Activities
Sales of available-for-sale securities	—			27		—
Net (increase) decrease of premises and equipment	(300		)	(79	)	771
Proceeds from sale of non-marketable equity securities	—			114		55
Equity contributions to subsidiaries	(24,989		)	(17,565	)	(3,475	)
Net cash used in investing activities	(25,289		)	(17,503	)	(2,649	)
Financing Activities
Net increase in other borrowed funds	(11,543		)	—		—
Cash dividends paid	(85,493		)	(111,720	)	(84,040	)
Tax withholding payments for stock-based compensation	(1,190		)	(1,531	)	(600	)
Net cash used in financing activities	(98,226		)	(113,251	)	(84,640	)
Net increase (decrease) in cash, cash equivalents and restricted cash	16,575			(15,882	)	14,944
Cash, cash equivalents and restricted cash at beginning of year	47,724			63,606		48,662
Cash, cash equivalents and restricted cash at end of year	$	64,299		47,724		63,606