Unaudited Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Summarized unaudited quarterly financial data

Summarized unaudited quarterly financial data is as follows:

	Quarters ended 2014
(Dollars in thousands, except per share data)	March 31		June 30	September 30	December 31
Interest income	$	74,087	73,963	75,690	76,179
Interest expense	6,640		6,528	6,430	7,368
Net interest income	67,447		67,435	69,260	68,811
Provision for loan losses	1,122		239	360	191
Net interest income after provision for loan losses	66,325		67,196	68,900	68,620
Non-interest income	19,388		22,504	24,432	23,978
Non-interest expense	50,070		52,673	54,238	55,698
Income before income taxes	35,643		37,027	39,094	36,900
Federal and state income tax expense	8,913		8,350	9,800	8,846
Net income	26,730		28,677	29,294	28,054
Basic earnings per share	0.36		0.38	0.40	0.37
Diluted earnings per share	0.36		0.38	0.40	0.37

	Quarters ended 2013
(Dollars in thousands, except per share data)	March 31		June 30	September 30	December 31
Interest income	$	57,955	62,151	69,531	73,939
Interest expense	7,458		7,185	7,186	6,929
Net interest income	50,497		54,966	62,345	67,010
Provision for loan losses	2,100		1,078	1,907	1,802
Net interest income after provision for loan losses	48,397		53,888	60,438	65,208
Non-interest income	22,950		23,222	23,873	23,002
Non-interest expense	43,434		48,481	50,368	53,034
Income before income taxes	27,913		28,629	33,943	35,176
Federal and state income tax expense	7,145		5,927	8,315	8,630
Net income	20,768		22,702	25,628	26,546
Basic earnings per share	0.29		0.31	0.35	0.36
Diluted earnings per share	0.29		0.31	0.35	0.36