Selected Quarterly Consolidated Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2017

Selected Quarterly Financial Information [Abstract]

Schedule of Quarterly Financial Information

	2017
(In thousands, except per share data)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Interest income	$	219,680	$	226,789	$	231,021	$	236,115
Interest expense	27,016		29,002		30,117		31,183
Net interest income	192,664		197,787		200,904		204,932
Provision for loan and lease losses	10,500		7,250		10,150		13,000
Non-interest income	63,042		64,551		65,846		66,039
Non-interest expense	163,784		164,419		161,823		171,049
Income before income tax expense	81,422		90,669		94,777		86,922
Income tax expense	21,951		29,090		30,281		17,029
Net income	$	59,471	$	61,579	$	64,496	$	69,893
Earnings applicable to common shareholders	$	57,342	$	59,485	$	62,426	$	67,710
Earnings per common share:
Basic	$	0.62	$	0.65	$	0.68	$	0.74
Diluted	0.62		0.64		0.67		0.73

	2016
(In thousands, except per share data)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Interest income	$	202,335	$	202,431	$	205,715	$	211,432
Interest expense	26,183		25,526		25,518		26,173
Net interest income	176,152		176,905		180,197		185,259
Provision for loan and lease losses	15,600		14,000		14,250		12,500
Non-interest income	62,374		65,075		66,412		70,617
Non-interest expense	152,445		152,778		156,097		161,871
Income before income tax expense	70,481		75,202		76,262		81,505
Income tax expense	23,434		24,599		24,445		23,845
Net income	$	47,047	$	50,603	$	51,817	$	57,660
Earnings applicable to common shareholders	$	44,921	$	48,398	$	49,634	$	55,501
Earnings per common share:
Basic	$	0.49	$	0.53	$	0.54	$	0.61
Diluted	0.49		0.53		0.54		0.60