Quarterly Financial Information (Tables)

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

	Year Ended December 31, 2018
(in thousands, except per share amounts)	1^st Quarter		2^nd Quarter		3^rd Quarter		4^th Quarter
Operating revenues	$	639,077	$	625,590	$	617,050	$	666,791
Interest income		137,734		154,421		169,760		184,534
Total revenues		776,811		780,011		786,810		851,325
Interest expense		26,453		37,279		48,468		57,876
Net revenues		750,358		742,732		738,342		793,449
Total non-interest expenses		630,804		624,385		597,812		637,518
Income before income tax expense		119,554		118,347		140,530		155,931
Provision for income taxes		30,793		31,060		36,672		41,869
Net income		88,761		87,287		103,858		114,062
Preferred dividends		2,344		2,344		2,343		2,344
Net income available to common shareholders	$	86,417	$	84,943	$	101,515	$	111,718
Earnings per common share
Basic	$	1.20	$	1.18	$	1.41	$	1.56
Diluted	$	1.06	$	1.04	$	1.25	$	1.38

Weighted-average number of common shares outstanding:
Basic		71,999		71,692		71,919		71,666
Diluted		81,789		81,299		81,484		80,706
Cash dividends declared per common share	$	0.12	$	0.12	$	0.12	$	0.12

	Year Ended December 31, 2017
(in thousands, except per share amounts)	1^st Quarter		2^nd Quarter		3^rd Quarter		4^th Quarter
Operating revenues	$	590,474	$	633,340	$	620,932	$	697,335
Interest income		100,953		108,951		117,862		126,615
Total revenues		691,427		742,291		738,794		823,950
Interest expense		15,896		16,644		17,625		19,865
Net revenues		675,531		725,647		721,169		804,085
Total non-interest expenses		596,512		642,449		613,030		804,905
Income before income tax expense		79,019		83,198		108,139		(820	)
Provision for income taxes		13,507		30,387		41,603		1,168
Net income		65,512		52,811		66,536		(1,988	)
Preferred dividends		2,344		2,344		2,343		2,344
Net income available to common shareholders	$	63,168	$	50,467	$	64,193	$	(4,332	)
Earnings per common share ⁽¹⁾
Basic	$	0.92	$	0.74	$	0.94	$	(0.06	)
Diluted	$	0.78	$	0.63	$	0.79	$	(0.06	)

Weighted-average number of common shares outstanding:
Basic		68,386		68,556		68,522		68,782
Diluted		80,695		80,021		80,881		68,782
Cash dividends declared per common share	$	—	$	—	$	0.10	$	0.10

⁽¹⁾

Earnings per share for the three months ended December 31, 2017 is calculated using the basic weighted average number of common shares outstanding, not fully dilutive shares, as they are anti-dilutive in periods a loss is incurred.