Segment Reporting - Schedule of Segment Reporting (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) segment	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting [Abstract]
Reportable business segments | segment			3
Segment Reporting Information [Line Items]
Total assets	$ 5,154,298	$ 4,749,181	$ 5,154,298	$ 4,749,181	$ 4,984,347
Interest income	54,060	46,460	106,424	89,994
Interest expense	11,425	7,470	22,266	13,732
Net interest income	42,635	38,990	84,158	76,262
Provision for loan and lease losses	2,076	15,409	4,761	17,462
Noninterest income	16,356	15,314	32,653	30,896
Intangible expenses	417	594	843	1,206
Restructuring charges				571
Other noninterest expense	36,361	33,753	71,492	67,695
Intersegment (revenue) expense	0	0	0	0
Income before income taxes	20,137	4,548	39,715	20,224
Income tax expense	3,669	191	7,168	3,017
Net income	16,468	4,357	32,547	17,207
Capital expenditures	582	872	1,432	1,953
Banking [Member]
Segment Reporting Information [Line Items]
Total assets	5,059,733	4,656,201	5,059,733	4,656,201	4,895,732
Interest income	54,041	46,444	106,387	89,966
Interest expense	10,164	6,209	19,744	11,210
Net interest income	43,877	40,235	86,643	78,756
Provision for loan and lease losses	2,076	15,409	4,761	17,462
Noninterest income	6,014	5,461	10,985	10,250
Intangible expenses	233	329	466	658
Restructuring charges				571
Other noninterest expense	28,098	26,723	55,877	54,384
Intersegment (revenue) expense	(295)	(295)	(594)	(586)
Income before income taxes	19,779	3,530	37,118	16,517
Income tax expense	3,660	(162)	6,780	1,836
Net income	16,119	3,692	30,338	14,681
Capital expenditures	371	820	1,136	1,790
Wealth Management [Member]
Segment Reporting Information [Line Items]
Total assets	42,024	37,227	42,024	37,227	39,090
Interest income	11	8	21	13
Interest expense	0	0	0	0
Net interest income	11	8	21	13
Provision for loan and lease losses	0	0	0	0
Noninterest income	6,155	5,862	11,875	11,602
Intangible expenses	105	137	210	279
Restructuring charges				0
Other noninterest expense	3,788	3,628	7,582	7,286
Intersegment (revenue) expense	161	156	327	309
Income before income taxes	2,112	1,949	3,777	3,741
Income tax expense	409	597	723	1,142
Net income	1,703	1,352	3,054	2,599
Capital expenditures	35	40	74	89
Insurance [Member]
Segment Reporting Information [Line Items]
Total assets	32,256	29,295	32,256	29,295	30,117
Interest income	0	0	0	0
Interest expense	0	0	0	0
Net interest income	0	0	0	0
Provision for loan and lease losses	0	0	0	0
Noninterest income	4,145	3,904	9,498	8,990
Intangible expenses	79	128	167	269
Restructuring charges				0
Other noninterest expense	3,072	3,093	6,198	6,338
Intersegment (revenue) expense	134	139	267	277
Income before income taxes	860	544	2,866	2,106
Income tax expense	70	163	263	619
Net income	790	381	2,603	1,487
Capital expenditures	39	2	64	9
Other Segments [Member]
Segment Reporting Information [Line Items]
Total assets	20,285	26,458	20,285	26,458	$ 19,408
Interest income	8	8	16	15
Interest expense	1,261	1,261	2,522	2,522
Net interest income	(1,253)	(1,253)	(2,506)	(2,507)
Provision for loan and lease losses	0	0	0	0
Noninterest income	42	87	295	54
Intangible expenses	0	0	0	0
Restructuring charges				0
Other noninterest expense	1,403	309	1,835	(313)
Intersegment (revenue) expense	0	0	0	0
Income before income taxes	(2,614)	(1,475)	(4,046)	(2,140)
Income tax expense	(470)	(407)	(598)	(580)
Net income	(2,144)	(1,068)	(3,448)	(1,560)
Capital expenditures	$ 137	$ 10	$ 158	$ 65