Consolidated Statements Of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest Income
Interest and fees on loans	$ 43,174	$ 34,292	$ 85,453	$ 67,210
Interest and dividends on investment securities:
Taxable	5,732	4,117	11,421	8,098
Tax-exempt	755	710	1,534	1,413
Interest on deposits in depository institutions	577	61	763	103
Total Interest Income	50,238	39,180	99,171	76,824
Interest Expense
Interest on deposits	8,417	4,918	16,184	9,244
Interest on short-term borrowings	863	459	1,915	919
Interest on long-term debt	47	230	95	441
Total Interest Expense	9,327	5,607	18,194	10,604
Net Interest Income	40,911	33,573	80,977	66,220
(Recovery of) provision for loan losses	(600)	(2,064)	(1,449)	(1,882)
Net Interest Income After (Recovery of) Provision for Loan Losses	41,511	35,637	82,426	68,102
Non-Interest Income
Gains on sale of investment securities, net	21	0	109	0
Unrealized gains recognized on equity securities still held	113	492	188	772
Bank owned life insurance	1,132	722	2,148	1,543
Other income	1,560	897	2,374	1,525
Total Non-Interest Income	17,825	15,611	33,750	30,105
Non-Interest Expense
Salaries and employee benefits	15,767	13,551	31,010	26,882
Occupancy related expense	2,598	2,346	5,330	4,750
Equipment and software related expense	2,223	1,895	4,414	3,727
FDIC insurance expense	347	313	638	627
Advertising	920	849	1,789	1,636
Bankcard expenses	1,534	1,064	2,716	2,139
Postage, delivery, and statement mailings	545	515	1,169	1,093
Office supplies	399	329	785	643
Legal and professional fees	605	475	1,126	925
Telecommunications	597	441	1,323	941
Repossessed asset losses, net of expenses	253	112	469	482
Merger related costs	547	0	797	0
Other expenses	4,437	3,021	8,617	6,009
Total Non-Interest Expense	30,772	24,911	60,183	49,854
Income Before Income Taxes	28,564	26,337	55,993	48,353
Income tax expense	5,813	5,358	11,623	9,763
Net Income Available to Common Shareholders	22,751	20,979	44,370	38,590
Total Comprehensive Income	$ 33,690	$ 18,542	$ 63,940	$ 27,940
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Average common shares outstanding, basic (in shares)	16,368	15,326	16,390	15,370
Effect of dilutive securities (in shares)	18	19	18	20
Average common shares outstanding, diluted (in shares)	16,386	15,345	16,408	15,390
Earnings Per Share [Abstract]
Basic earnings per common share (in dollars per share)	$ 1.38	$ 1.36	$ 2.68	$ 2.49
Diluted earnings per common share (in dollars per share)	1.38	1.35	2.68	2.48
Dividends declared per common share (in dollars per share)	$ 0.53	$ 0.46	$ 1.06	$ 0.92
Deposit Account [Member]
Non-Interest Income
Revenue from contract with customer	$ 7,778	$ 7,323	$ 15,099	$ 14,185
Debit Card [Member]
Non-Interest Income
Revenue from contract with customer	5,522	4,532	10,491	8,866
Fiduciary and Trust [Member]
Non-Interest Income
Revenue from contract with customer	$ 1,699	$ 1,645	$ 3,341	$ 3,214