Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Activity for Goodwill and Other Intangible Assets

The following table presents activity for goodwill and other intangible assets (in thousands):


	Goodwill		Core deposit and other intangible assets		Total
Balance at December 31, 2018	$	1,807,121	$	46,161	$	1,853,282
Acquisitions	12,690		14,877		27,567
Amortization	—		(9,908)		(9,908)

Balance at December 31, 2019	$	1,819,811	$	51,130	$	1,870,941

Gross Carrying Amount and Accumulated Amortization for the Core Deposit and Other Intangible Assets

The following table presents the gross carrying amount and accumulated amortization for the core deposit and other intangible assets, which are subject to amortization (in thousands):


	December 31, 2019		December 31, 2018
Gross carrying amount	$	107,665	$	92,787
Accumulated amortization	(56,535)		(46,626)
Net book value	$	51,130	$	46,161

Supplemental Cash Flow Information

Cash Equivalents and Cash Flows — Cash on hand, cash items in process of collection, amounts due from banks, Federal funds sold, short-term discount notes and securities purchased under agreements to resell, with original maturities within ninety days, are included in cash and cash equivalents. The following supplemental cash flow information addresses certain cash payments and noncash transactions for each of the years in the three-year period ended December 31, 2019 as follows (in thousands):


	For the years ended December 31,
	2019		2018		2017
Cash Payments:
Interest	$	287,272	$	199,464	$	91,628
Income taxes paid	86,960		55,626		81,539
Noncash Transactions:
Loans charged-off to the allowance for loan losses	28,467		30,400		22,046
Loans foreclosed upon with repossessions transferred to other real estate	17,937		3,524		6,228
Loans foreclosed upon with repossessions transferred to other repossessed assets	93		1,899		646
Other real estate sales financed	871		891		908
Fixed assets transferred to other real estate	8,182		—		—
Available-for-sale securities transferred to held-to-maturity portfolio	—		179,763		—
Held-for-sale loans transferred to held-for-investment loan portfolio	—		44,980		—
Common stock issued in connection with acquisitions	—		—		1,850,968
Right-of-use assets recognized in the period in exchange for lease obligations⁽¹⁾	90,927		—		—

⁽¹⁾ Includes $79.9 million recognized upon initial adoption of ASU 2016-02 on January 1, 2019.

Basic and Diluted Earnings Per Share Calculations

The following is a summary of the basic and diluted earnings per share calculation for each of the years in the three-year period ended December 31, 2019 (dollars in thousands except earnings per share):


	December 31, 2019		December 31, 2018		December 31, 2017
Basic earnings per share calculation:
Numerator - Net income	$	400,881	$	359,440	$	173,979

Denominator – Weighted average common shares outstanding	76,364,303		77,111,372		63,760,578
Basic net income per common share	$	5.25	$	4.66	$	2.73

Diluted earnings per share calculation:
Numerator - Net income	$	400,881	$	359,440	$	173,979

Denominator – Weighted average common shares outstanding	76,364,303		77,111,372		63,760,578
Dilutive shares contingently issuable	399,600		338,545		567,611
Weighted average diluted common shares outstanding	76,763,903		77,449,917		64,328,189
Diluted net income per common share	$	5.22	$	4.64	$	2.70