Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Summary of the Unaudited Quarterly Results of Operations

A summary of the unaudited quarterly results of operations for the years ended December 31, 2016 and 2015 is as follows:

	Quarter
	Fourth		Third			Second			First
	(Dollars in thousands, except per share data)
2016
Net interest income	$	51,553	$	51,431		$	50,868		$	49,976
Provision for loan losses		1,672		2,940			2,804			4,103
Securities transactions		52		(146	)		(65	)		100
Noninterest income		27,431		27,927			26,057			25,617
Noninterest expense		48,189		49,204			47,720			46,291
Net income		18,620		17,982			17,493			16,579
Net income per common share:
Basic		1.19		1.15			1.12			1.07
Diluted		1.16		1.13			1.10			1.05
2015
Net interest income	$	50,075	$	46,876		$	46,215		$	45,626
Provision for loan losses		3,646		1,424			1,271			1,334
Securities transactions		2,148		—			5,392			1,729
Noninterest income		26,473		25,324			28,715			25,296
Noninterest expense		49,011		46,352			45,429			44,923
Net income		15,728		15,630			18,553			16,259
Net income per common share:
Basic		1.00		1.01			1.19			1.05
Diluted		0.99		0.98			1.17			1.03