Condensed Financial Information (parent company only) (Tables)

12 Months Ended

Dec. 31, 2019

Condensed Financial Information Disclosure [Abstract]

Schedule of Parent Company Information, Condensed Balance Sheets

Condensed Balance Sheets

	December 31, 2019		December 31, 2018
Assets
Cash	$	127,723	$	87,435
Investment in subsidiaries	1,791,070		1,459,036
Premises and equipment	153		1,158
Interest receivable	6		6
Goodwill	448		448
Cash surrender value of life insurance	837		810
Other assets	16,803		5,240
Total assets	$	1,937,040	$	1,554,133
Liabilities
Subordinated debentures and term loans	$	138,685	$	138,463
Interest payable	977		994
Other liabilities	10,941		6,416
Total liabilities	150,603		145,873
Stockholders' equity	1,786,437		1,408,260
Total liabilities and stockholders' equity	$	1,937,040	$	1,554,133

Schedule of Parent Company Information, Condensed Statements of Income and Comprehensive Income

Condensed Statements of Income and Comprehensive Income

	December 31, 2019		December 31, 2018			December 31, 2017
Income
Dividends from subsidiaries	$	125,775	$	100,954		$	33,014
Loss on sale of available for sale securities	—		—			(50		)
Other income	172		572			350
Total income	125,947		101,526			33,314
Expenses
Interest expense	8,309		8,233			7,572
Salaries and employee benefits	3,540		3,729			4,118
Net occupancy and equipment expenses	802		851			797
Other outside services	1,889		489			1,810
Professional services	303		270			442
Other expenses	1,587		442			(385		)
Total expenses	16,430		14,014			14,354
Income before income tax benefit and equity in undistributed income of subsidiaries	109,517		87,512			18,960
Income tax benefit	3,575		3,298			5,946
Income before equity in undistributed income of subsidiaries	113,092		90,810			24,906
Equity in undistributed income of subsidiaries	51,368		68,329			71,164
Net income available to common stockholders	$	164,460	$	159,139		$	96,070
Net income	$	164,460	$	159,139		$	96,070
Other comprehensive income (loss)	49,296		(17,888		)	10,673
Comprehensive income	$	213,756	$	141,251		$	106,743

Schedule of Parent Company Information, Condensed Statement of Cash Flows

Condensed Statements of Cash Flows

	December 31, 2019			December 31, 2018			December 31, 2017
Cash Flow From Operating Activities:
Net income	$	164,460		$	159,139		$	96,070
Adjustments to Reconcile Net Income to Net Cash:
Share-based compensation	1,339			1,256			1,215
Distributions in excess of (equity in undistributed) income of subsidiaries	(51,368		)	(68,329		)	(71,164		)
Loss on sale of available for sale securities	—			—			50
Net Change in:
Other assets	(8,944		)	584			3,358
Other liabilities	4,611			274			(1,900		)
Investment in subsidiaries - operating activities	(268		)	841			1,112
Net cash provided by operating activities	109,830			93,765			28,741
Cash Flow From Investing Activities:
Net cash received in acquisition	78			—			37
Other	—			2,189			—
Net cash provided by investing activities	78			2,189			37
Cash Flow From Financing Activities:
Cash dividends	(51,276		)	(41,660		)	(31,820		)
Stock issued under employee benefit plans	702			707			519
Stock issued under dividend reinvestment and stock purchase plan	1,531			1,211			991
Stock options exercised	144			1,598			2,398
Restricted shares withheld for taxes	(1,680		)	(1,902		)	(1,283		)
Repurchases of common stock	(19,041		)	—			—
Net cash used by financing activities	(69,620		)	(40,046		)	(29,195		)
Net change in cash	40,288			55,908			(417		)
Cash, beginning of the year	87,435			31,527			31,944
Cash, end of year	$	127,723		$	87,435		$	31,527