Parent Company Financial Statements (Tables)

12 Months Ended

Dec. 31, 2016

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Condensed Balance Sheets

Parent Company
Condensed Balance Sheets
(Dollars in thousands)	December 31, 2016		December 31, 2015
Assets
Cash	$	8,278	$	24,869
Overnight investments	26,157		1,416
Investment securities available for sale	95,564		21,137
Investment in banking subsidiaries	2,932,048		2,874,581
Investment in other subsidiaries	41,066		43,117
Other assets	92,787		73,944
Total assets	$	3,195,900	$	3,039,064
Liabilities and Shareholders' Equity
Long-term obligations	$	126,861	$	133,775
Due to subsidiaries	56,323		29,682
Other liabilities	289		3,498
Shareholders' equity	3,012,427		2,872,109
Total liabilities and shareholders' equity	$	3,195,900	$	3,039,064

Condensed Income Statements

Parent Company
Condensed Income Statements
	Year ended December 31
(Dollars in thousands)	2016			2015			2014
Interest income	$	1,110		$	645		$	1,784
Interest expense	6,067			6,793			9,694
Net interest loss	(4,957		)	(6,148		)	(7,910		)
Dividends from banking subsidiaries	90,055			75,006			82,419
Dividends from other subsidiaries	—			23,500			—
Other income	9,330			1,870			33,600
Other operating expense	5,641			2,634			6,534
Income before income tax benefit and equity in undistributed net income of subsidiaries	88,787			91,594			101,575
Income tax benefit	(730		)	(2,618		)	(2,590		)
Income before equity in undistributed net income of subsidiaries	89,517			94,212			104,165
Equity in undistributed net income of subsidiaries	135,965			116,174			34,397
Net income	$	225,482		$	210,386		$	138,562

Condensed Statements of Cash Flows

Parent Company
Condensed Statements of Cash Flows
	Year ended December 31
(Dollars in thousands)	2016			2015			2014
OPERATING ACTIVITIES
Net income	$	225,482		$	210,386		$	138,562
Adjustments
Undistributed net income of subsidiaries	(135,965		)	(116,174		)	(34,397		)
Net amortization of premiums and discounts	(6,838		)	(2,712		)	594
Securities gains	(9,446		)	(236		)	(29,126		)
Gain on elimination of acquired debt	—			—			(1,988		)
Change in other assets	(20,845		)	(3,070		)	93,385
Change in other liabilities	(1,780		)	(1,157		)	2,250
Net cash provided by operating activities	50,608			87,037			169,280
INVESTING ACTIVITIES
Net change in due from subsidiaries	—			295,994			(150,328		)
Net change in overnight investments	(24,741		)	(1,416		)	—
Purchases of investment securities	(93,003		)	(7,818		)	(33,243		)
Proceeds from sales, calls, and maturities of securities	38,316			100,586			114,208
Investment in subsidiaries	—			—			1,579
Business acquisitions, net of cash acquired	—			—			(24,772		)
Net cash (used) provided by investing activities	(79,428		)	387,346			(92,556		)
FINANCING ACTIVITIES
Net change in due to subsidiaries	26,641			29,682			—
Net change in short-term borrowings	—			(485,207		)	(1,211		)
Retirement of long-term obligations	—			—			(52,372		)
Stock issuance costs	—			—			(619		)
Cash dividends paid	(14,412		)	(18,015		)	(11,543		)
Net cash provided (used) by financing activities	12,229			(473,540		)	(65,745		)
Net change in cash	(16,591		)	843			10,979
Cash balance at beginning of year	24,869			24,026			13,047
Cash balance at end of year	$	8,278		$	24,869		$	24,026