CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
INTEREST INCOME:
Loans, including fees	$ 76,828	$ 69,627
Taxable investment securities	3,591	2,634
Federal Home Loan Bank stock and other	2,214	1,572
Total interest income	82,633	73,833
INTEREST EXPENSE:
Deposits	6,748	3,360
Securities sold under agreements to repurchase and other short-term borrowings	421	213
Federal Home Loan Bank advances	2,730	2,274
Subordinated note	435	321
Total interest expense	10,334	6,168
NET INTEREST INCOME	72,299	67,665
Provision for loan and lease losses	17,231	17,255
NET INTEREST INCOME AFTER PROVISION FOR LOAN AND LEASE LOSSES	55,068	50,410
NONINTEREST INCOME:
Service charges on deposit accounts	3,303	3,555
Net refund transfer fees	17,100	16,352
Mortgage banking income	1,539	1,020
Interchange fee income	2,757	2,667
Program fees	1,074	1,696
Increase in cash surrender value of bank owned life insurance	382	371
Net gains on other real estate owned	130	132
Other	1,132	1,752
Total noninterest income	27,417	27,545
NONINTEREST EXPENSE:
Salaries and employee benefits	25,076	23,834
Occupancy and equipment, net	6,584	6,221
Communication and transportation	1,161	1,382
Marketing and development	1,102	916
FDIC insurance expense	448	525
Bank franchise tax expense	2,496	2,518
Data processing	2,096	2,386
Interchange related expense	1,315	1,007
Supplies	484	381
Other real estate owned expense	46	45
Legal and professional fees	886	1,043
Other	3,815	2,787
Total noninterest expense	45,509	43,045
INCOME BEFORE INCOME TAX EXPENSE	36,976	34,910
INCOME TAX EXPENSE	7,460	7,441
NET INCOME	$ 29,516	$ 27,469
Class A Common Stock
BASIC EARNINGS PER SHARE:
Basic earnings per share (in dollars per share)	$ 1.42	$ 1.32
DILUTED EARNINGS PER SHARE:
Diluted earnings per share (in dollars per share)	1.41	1.32
Class B Common Stock
BASIC EARNINGS PER SHARE:
Basic earnings per share (in dollars per share)	1.29	1.21
DILUTED EARNINGS PER SHARE:
Diluted earnings per share (in dollars per share)	$ 1.28	$ 1.20