Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest Income
Loans and fees	$ 229,036	$ 233,535	$ 193,143
Federal funds sold and interest-bearing deposits with banks	348	1,720	1,559
Taxable investment securities and other	17,811	19,722	16,710
Tax-exempt investment securities	1,647	1,510	1,709
Total Interest Income	248,842	256,487	213,121
Interest Expense
Deposits	32,059	49,248	30,620
Federal funds purchased and securities sold under agreements to repurchase	556	1,471	471
Other borrowings	8,540	9,734	8,471
Total Interest Expense	41,155	60,453	39,562
Net Interest Income	207,687	196,034	173,559
Provision for credit losses	27,222	2,130	4,413
Net Interest Income after Provision for Credit Losses	180,465	193,904	169,146
Noninterest Income
Service charges on deposit accounts	9,148	11,205	10,584
Commissions and fees	5,868	6,230	5,542
Income on bank owned life insurance	2,657	2,740	3,256
(Loss) gain on equity securities	(552)	496	(583)
Gains on sales of loans	3,322	1,660	1,329
Gain on sales and calls of investment securities, net	1,213	0	0
Swap income	4,719	3,231	1,992
Other income	735	1,234	190
Total Noninterest Income	27,110	26,796	22,310
Total Noninterest Income
Salaries and employee benefits	80,399	77,287	68,595
Net occupancy expense	10,596	11,029	10,155
Furniture and equipment	11,275	8,681	8,297
FDIC insurance expense	2,123	431	1,608
Stationery, supplies and postage	1,677	1,599	1,625
Marketing expense	1,253	1,945	1,437
Data processing expense	4,964	4,913	3,609
Telecommunications expense	1,875	1,943	1,769
ATM and debit card expense	2,331	2,377	2,195
Core deposit intangible amortization	1,025	1,182	594
Other real estate and repossessed asset expense	53	256	158
Long-term debt prepayment fee	4,133	0	0
Merger related expenses	0	3,178	464
Other expenses	11,094	11,935	10,661
Total Noninterest Expense	132,798	126,756	111,167
Income before provision for income taxes	74,777	93,944	80,289
Provision for income taxes	17,259	23,272	16,888
Net Income	$ 57,518	$ 70,672	$ 63,401
Per Share of Common Stock
Basic earnings (usd per share)	$ 1.13	$ 1.39	$ 1.32
Diluted earnings (usd per share)	1.13	1.38	1.32
Cash dividends paid (usd per share)	$ 0.50	$ 0.49	$ 0.45