CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
Interest income
Interest and fees on loans		$ 49,494	$ 40,632		$ 96,519	$ 78,638
Interest and dividends on investment securities:
Taxable		2,150	1,799		4,037	3,347
Tax-exempt		778	831		1,592	1,785
Dividends		502	290		987	620
Interest on federal funds sold and other short-term investments		160	139		424	385
Total interest income		53,084	43,691		103,559	84,775
Interest expense
Deposits		9,169	5,495		16,857	10,604
Borrowings		4,970	3,095		9,610	5,929
Total interest expense		14,139	8,590		26,467	16,533
Net interest income		38,945	35,101		77,092	68,242
Provision for loan losses		1,100	1,450		18,900	2,550
Net interest income after provision for loan losses		37,845	33,651		58,192	65,692
Noninterest income
Income on bank owned life insurance	[1]	775	714	[2]	1,549	1,417	[2]
Net gains on sale of loans held-for-sale	[1]	12	49	[2]	29	70	[2]
Deposit, loan and other income		601	659		1,217	1,341
Net gains on sales of securities available-for-sale	[1]			[2]		1,596	[2]
Total noninterest income		1,388	1,422	[1],[2]	2,795	4,424	[1],[2]
Noninterest expenses
Salaries and employee benefits		9,729	8,569		19,401	16,713
Occupancy and equipment		2,031	1,991		4,174	4,246
FDIC insurance		765	815		1,615	1,710
Professional and consulting		825	734		1,548	1,452
Marketing and advertising		337	289		544	545
Data processing		1,091	1,149		2,239	2,298
Amortization of core deposit intangible		169	193		338	386
Other components of net periodic pension expense		7	63		14	125
Increase in valuation allowance, loans held-for-sale			9,725			12,325
Change in fair value of equity securities		47			168
Other expenses		2,107	1,775		4,126	3,752
Total noninterest expenses		17,108	25,303		34,167	43,552
Income before income tax expense		22,125	9,770		26,820	26,564
Income tax expense		4,598	2,087		5,042	7,001
Net income		$ 17,527	$ 7,683		$ 21,778	$ 19,563
Earnings per common share:
Basic		$ 0.54	$ 0.24		$ 0.68	$ 0.61
Diluted		0.54	0.24		0.67	0.60
Dividends per common share		$ 0.075	$ 0.075		$ 0.150	$ 0.150

[1] Not within scope of ASC 606.

[2] The Company elected the modified respective approach of adoption; therefore, prior period balances are presented under legacy GAAP and may not be comparable to current year presentation.