CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
INTEREST INCOME:
Loans, including fees	$ 77,513	$ 76,828
Taxable investment securities	2,783	3,591
Federal Home Loan Bank stock and other	863	2,214
Total interest income	81,159	82,633
INTEREST EXPENSE:
Deposits	6,302	6,748
Securities sold under agreements to repurchase and other short-term borrowings	119	421
Federal Home Loan Bank advances	1,648	2,730
Subordinated note	352	435
Total interest expense	8,421	10,334
NET INTEREST INCOME	72,738	72,299
Credit loss expense	22,760	17,231
NET INTEREST INCOME AFTER CREDIT LOSS EXPENSE	49,978	55,068
NONINTEREST INCOME:
Service charges on deposit accounts	3,136	3,303
Net refund transfer fees	15,823	17,100
Mortgage banking income	4,795	1,539
Interchange fee income	2,552	2,757
Program fees	2,624	1,074
Increase in cash surrender value of bank owned life insurance	389	382
Net gains on other real estate owned	3	130
Other	1,247	1,132
Total noninterest income	30,569	27,417
NONINTEREST EXPENSE:
Salaries and employee benefits	26,622	25,076
Occupancy and equipment, net	6,846	6,584
Communication and transportation	1,289	1,161
Marketing and development	833	1,102
FDIC insurance expense		448
Bank franchise tax expense	2,506	2,496
Data processing	2,539	2,096
Interchange related expense	1,076	1,315
Supplies	452	484
Other real estate owned and other repossession expense	18	46
Legal and professional fees	1,237	886
Impairment of premises held for sale		66
Other	3,551	3,815
Total noninterest expense	46,969	45,509
INCOME BEFORE INCOME TAX EXPENSE	33,578	36,976
INCOME TAX EXPENSE	6,881	7,460
NET INCOME	$ 26,697	$ 29,516
Class A Common Stock
BASIC EARNINGS PER SHARE:
Basic earnings per share (in dollars per share)	$ 1.29	$ 1.42
DILUTED EARNINGS PER SHARE:
Diluted earnings per share (in dollars per share)	1.28	1.41
Class B Common Stock
BASIC EARNINGS PER SHARE:
Basic earnings per share (in dollars per share)	1.17	1.29
DILUTED EARNINGS PER SHARE:
Diluted earnings per share (in dollars per share)	$ 1.16	$ 1.28