Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest Income
Loans	$ 198,226	$ 176,654	$ 178,883
Investment securities and other	7,723	6,407	6,292
Interest and Dividend Income, Operating	205,949	183,061	185,175
Interest Expense
Deposits	27,957	20,595	17,387
Federal Home Loan Bank advances	3,985	1,516	1,214
Short-term borrowings and repurchase agreements	765	747	1,137
Subordinated debentures issued to capital trust	953	949	803
Subordinated notes	4,097	4,098	1,578
Interest Expense	37,757	27,905	22,119
Net Interest Income	168,192	155,156	163,056
Provision for Loan Losses	7,150	9,100	9,281
Net Interest Income After Provision for Loan Losses	161,042	146,056	153,775
Noninterest Income
Commissions	1,137	1,041	1,097
Service charges and ATM fees	21,695	21,628	21,666
Net gains on loan sales	1,788	3,150	3,941
Net realized gains on sales of available-for-sale securities	2	0	2,873
Late charges and fees on loans	1,622	2,231	1,747
Gain on derivative interest rate products	25	28	66
Gain on sale of business units	7,414	0	0
Gain (loss) on termination of loss sharing agreements	0	7,705	(584)
Amortization of income/expense related to business acquisitions	0	(486)	(6,351)
Other income	2,535	3,230	4,055
Noninterest Income	36,218	38,527	28,510
Noninterest Expense
Salaries and employee benefits	60,215	60,034	60,377
Occupancy expense	25,628	24,613	26,077
Postage	3,348	3,461	3,791
Insurance	2,674	2,959	3,482
Advertising	2,460	2,311	2,228
Office supplies and printing	1,047	1,446	1,708
Telephone	3,272	3,188	3,483
Legal, audit and other professional fees	3,423	2,862	3,191
Expense on other real estate and repossessions	4,919	3,929	4,111
Partnership Tax Credit Investment Amortization	575	930	1,681
Acquired Deposit Intangible Asset Amortization	1,562	1,650	1,910
Other operating expenses	6,187	6,878	8,388
Noninterest Expense	115,310	114,261	120,427
Income Before Income Taxes	81,950	70,322	61,858
Provision for Income Taxes	14,841	18,758	16,516
Net Income and Net Income Available to Common Shareholders	$ 67,109	$ 51,564	$ 45,342
Earnings Per Common Share
Basic	$ 4.75	$ 3.67	$ 3.26
Diluted	$ 4.71	$ 3.64	$ 3.21