Unaudited Quarterly Financial Data (Condensed) (Tables)

12 Months Ended

Dec. 31, 2021

Quarterly Financial Information Disclosure [Abstract]

Summarized unaudited quarterly financial data

Summarized unaudited quarterly financial data is as follows:

	Quarters ended 2021
(Dollars in thousands, except per share data)	March 31		June 30	September 30	December 31
Interest income	$	161,552	159,956	166,741	192,825
Interest expense	4,740		4,487	4,128	5,203
Net interest income	156,812		155,469	162,613	187,622
Provision for credit losses	48		(5,653)	725	27,956
Net interest income after provision for credit losses	156,764		161,122	161,888	159,666
Non-interest income	40,121		35,522	34,815	34,362
Non-interest expense	96,585		100,082	104,108	134,047
Income before income taxes	100,300		96,562	92,595	59,981
Federal and state income tax expense	19,498		18,935	16,976	9,272
Net income	$	80,802	77,627	75,619	50,709
Basic earnings per share	$	0.85	0.81	0.79	0.46
Diluted earnings per share	$	0.85	0.81	0.79	0.46

	Quarters ended 2020
(Dollars in thousands, except per share data)	March 31		June 30	September 30	December 31
Interest income	$	142,865	155,404	157,487	171,308
Interest expense	8,496		7,185	6,084	5,550
Net interest income	134,369		148,219	151,403	165,758
Provision for credit losses	19,185		16,929	5,186	(1,535)
Net interest income after provision for credit losses	115,184		131,290	146,217	167,293
Non-interest income	33,272		41,224	53,667	44,704
Non-interest expense	95,487		94,764	103,373	111,187
Income before income taxes	52,969		77,750	96,511	100,810
Federal and state income tax expense	9,630		14,306	18,754	18,950
Net income	$	43,339	63,444	77,757	81,860
Basic earnings per share	$	0.46	0.67	0.81	0.86
Diluted earnings per share	$	0.46	0.66	0.81	0.86