Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

A summary of the preliminary purchase price allocation and resulting goodwill at October 1, 2018 follows (in thousands):

Cash and due from banks	$	80,827
Investment securities	17,287
Available for sale securities	546,776
Restricted equity securities	5,261
Loans (Unpaid principal balance - $3,066,521)	2,937,499
Premises and equipment	5,515
Receivables	24,893
Intangible assets	106,733
Real estate and other repossessed assets	5,155
Derivative contracts asset, net	8,197
Cash surrender value of bank-owned life insurance	55,740
Other assets	56,642
Total assets acquired	3,850,525
Deposits	3,289,071
Funds purchased and repurchase agreements	37,218
Subordinated debentures	131,197
Accrued interest, taxes and expense	33,122
Derivative contracts liability, net	12,303
Other liabilities	5,254
Total liabilities assumed	3,508,165
Net assets acquired	342,360
Less: Purchase price	944,193
Goodwill	$	601,833

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The following table presents the original cost and accumulated amortization of intangible assets (in thousands):

	Dec. 31,
	2018		2017
Core deposit premiums	$	103,200	$	6,510
Less accumulated amortization	5,032		808
Net core deposit premiums	98,168		5,702
Other identifiable intangible assets	63,497		44,468
Less accumulated amortization	26,816		21,512
Net other identifiable intangible assets	36,681		22,956
Total intangible assets, net	$	134,849	$	28,658

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Expected amortization expense for intangible assets that will continue to be amortized (in thousands):

	Core Deposit Premiums		Other Identifiable Intangible Assets		Total
2019	$	14,332	$	6,149	$	20,481
2020	12,892		6,304		19,196
2021	11,893		5,606		17,499
2022	10,981		4,238		15,219
2023	10,145		3,199		13,344
Thereafter	37,925		11,185		49,110
	$	98,168	$	36,681	$	134,849

Schedule of Goodwill [Table Text Block]

The changes in the carrying value of goodwill by operating segment are as follows (in thousands):

	Commercial Banking			Consumer Banking		Wealth Management			Funds Management and Other			Total
Balance, December 31, 2016	272,196			39,023		71,520			66,160			448,899
Goodwill recognized during 2017	4,301			—		—			—			4,301
Sales of consolidated merchant banking investments during 2017	(5,219		)	—		(25		)	—			(5,244		)
Adjustment1	41,992			4,435		19,207			(66,160		)	(526		)
Balance, December 31, 2017	313,270			43,458		90,702			—			447,430
Goodwill recognized during 20182	—			—		—			601,833			601,833
Balance, December 31, 2018	$	313,270		$	43,458	$	90,702		$	601,833		$	1,049,263

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