CONSOLIDATED STATEMENTS OF INCOME Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest and dividend income:
Loans	$ 156,189	$ 154,229	$ 447,110	$ 453,243
Investment securities	13,808	13,985	44,222	44,723
Money market investments and interest-bearing cash accounts	405	4,081	2,950	10,311
Total interest income	170,402	172,295	494,282	508,277
Interest expense:
Deposits	16,088	20,341	52,739	56,936
Loans payable	0	0	21	0
Securities sold under agreements to repurchase	1,484	1,320	5,282	5,489
Advances from FHLB	2,778	3,878	8,656	11,490
Other borrowings	1,356	2,331	5,029	7,210
Total interest expense	21,706	27,870	71,727	81,125
Net interest income	148,696	144,425	422,555	427,152
Provision for Loan, Lease, and Other Losses [Abstract]
Provision For Loan And Lease Losses	48,078	7,398	158,531	31,752
Provision for credit losses	46,914	7,398	163,294	31,340
Net interest income after provision for credit losses	101,782	137,027	259,261	395,812
Non-interest income:
Service charges and fees on deposit accounts	5,848	6,108	16,280	17,711
Mortgage banking activities	7,099	4,396	14,573	12,418
Gain on early extinguishment of debt	94	0	94	0
Insurance commission income	1,473	1,983	7,436	8,258
Net gain (loss) on investment securities	5,288	(497)	13,380	(497)
Other non-interest income	10,132	9,411	29,263	28,277
Total non-interest income	29,934	21,401	81,026	66,167
Non-interest expenses:
Employees' compensation and benefits	43,063	41,409	125,454	121,518
Occupancy and equipment	19,064	15,129	50,567	47,018
Business promotion	3,046	4,004	8,982	11,650
Professional fees	11,563	11,875	35,324	33,856
Taxes, other than income taxes	4,510	3,904	11,967	11,461
FDIC deposit insurance	1,630	1,465	4,588	4,645
Net loss on OREO and OREO operations	1,019	2,578	3,018	11,364
Credit and debit card processing expenses	4,859	4,764	12,747	12,738
Communications	2,246	1,834	5,975	5,300
Merger and Restructuring costs	10,441	592	14,188	592
Other non-interest expenses	6,067	5,279	16,668	16,012
Total non-interest expenses	107,508	92,833	289,478	276,154
Income before income taxes	24,208	65,595	50,809	185,825
Income tax (benefit) expense	(4,405)	19,268	(1,326)	54,897
Net income	28,613	46,327	52,135	130,928
Net income attributable to common stockholders	$ 27,944	$ 45,658	$ 50,128	$ 128,921
Net income per common share:
Basic	$ 0.13	$ 0.21	$ 0.23	$ 0.60
Diluted	$ 0.13	$ 0.21	$ 0.23	$ 0.59
Debt Securities [Member]
Provision for Loan, Lease, and Other Losses [Abstract]
Provision for Other Credit Losses	$ (361)	$ 0	$ 2,404	$ 0
Unfunded Loan Commitment [Member]
Provision for Loan, Lease, and Other Losses [Abstract]
Provision for Other Credit Losses	$ (803)	$ 0	$ 2,359	$ (412)