CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
INTEREST INCOME
Loans, including fees	$ 68,631	$ 62,450	$ 198,296	$ 179,908
Investment Securities:
Taxable	3,649	2,988	10,597	8,783
Tax-exempt	857	896	2,603	2,744
Dividends	490	389	1,741	1,352
Total Interest Income	73,627	66,723	213,237	192,787
INTEREST EXPENSE
Deposits	10,871	6,748	27,883	18,103
Borrowings and junior subordinated debt securities	3,494	2,519	10,758	6,779
Total Interest Expense	14,365	9,267	38,641	24,882
NET INTEREST INCOME	59,262	57,456	174,596	167,905
Provision for loan losses	462	2,850	12,279	12,901
Net Interest Income After Provision for Loan Losses	58,800	54,606	162,317	155,004
NONINTEREST INCOME
Net gain on sale of securities	0	0	0	3,987
Mortgage banking	700	872	2,133	2,280
Insurance	101	1,318	404	4,232
Gain on sale of a majority interest of insurance business	0	0	1,873	0
Other	2,266	2,681	6,642	6,906
Total Noninterest Income	12,042	13,551	38,086	42,812
NONINTEREST EXPENSE
Salaries and employee benefits	19,769	20,325	57,195	60,770
Data processing and information technology	2,906	2,284	7,610	6,670
Net occupancy	2,722	2,692	8,399	8,258
Furniture, equipment and software	2,005	1,890	6,096	5,746
Other taxes	1,341	1,208	4,928	3,268
Professional services and legal	1,181	869	3,120	2,868
Marketing	1,023	766	2,916	2,468
FDIC insurance	746	1,152	2,592	3,461
Other	5,392	5,367	16,174	16,451
Total Noninterest Expense	37,085	36,553	109,030	109,960
Income Before Taxes	33,757	31,604	91,373	87,856
Provision for income taxes	2,876	8,883	12,893	24,182
Net Income	$ 30,881	$ 22,721	$ 78,480	$ 63,674
Earnings per share—basic (in dollars per share)	$ 0.89	$ 0.65	$ 2.26	$ 1.83
Earnings per share—diluted (in dollars per share)	0.88	0.65	2.24	1.82
Dividends declared per share (in dollars per share)	$ 0.25	$ 0.20	$ 0.72	$ 0.60
Comprehensive Income	$ 28,573	$ 22,975	$ 67,943	$ 64,854
Service charges on deposit accounts
NONINTEREST INCOME
Revenues from contract with customers	3,351	3,207	9,765	9,218
Debit and credit card
NONINTEREST INCOME
Revenues from contract with customers	3,141	3,067	9,487	8,952
Wealth management
NONINTEREST INCOME
Revenues from contract with customers	$ 2,483	$ 2,406	$ 7,782	$ 7,237