CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Interest income:
Loans		$ 160,675	$ 116,285
Investment securities:
Taxable		12,534	12,286
Tax-exempt		1,737	1,716
Federal funds sold and other		1,813	1,995
Total interest income		176,759	132,282
Interest expense:
Deposits		19,836	13,323
Securities sold under agreement to repurchase		252	236
Federal funds purchased and other borrowings		2,321	3,978
Corporate and subordinated debentures		997	570
Total interest expense		23,406	18,107
Net interest income		153,353	114,175
Provision for credit losses		44,914	1,053
Net interest income after credit loss provision		108,439	113,122
Non-interest income:
Correspondent banking capital markets revenue		26,424	7,972
Other correspondent banking related revenue		1,384	1,028
Small business administration loans revenue		1,403	688
Debit, prepaid, ATM and merchant card related fees		3,667	5,018
Wealth management related revenue		831	607
Bank owned life insurance income		1,927	1,626
Net gain on sale of available for sale debt securities			17
Other non-interest income		1,659	1,473
Total other income		55,790	29,300
Non-interest expense:
Salaries, wages and employee benefits		77,077	48,393
Occupancy expense		7,346	5,602
Depreciation of premises and equipment		4,045	2,850
Supplies, stationary and printing		861	748
Marketing expenses		2,158	2,020
Data processing expense		5,617	3,656
Legal, audit and other professional fees		2,682	1,442
Amortization of intangibles		4,535	2,814
Credit loss expense for unfunded commitments		1,027
Postage and delivery		1,160	925
ATM and debit card and merchant card related expenses		1,598	1,453
Bank regulatory expenses		1,807	1,616
Loss on sale of repossessed real estate (“OREO”)		1	47
Valuation write down of OREO		95	108
(Gain) loss on repossessed assets other than real estate		(8)	13
Foreclosure related expenses		856	561
Merger related expenses		3,051	6,365
Impairment on bank property held for sale		31	107
Other expenses		8,833	5,753
Total other expenses		122,772	84,473
Income before provision for income taxes		41,457	57,949
Provision for income taxes		6,025	13,306
Net income		35,432	44,643
Other comprehensive income, net of tax
Unrealized available for sale debt securities holding gain, net of taxes of $13,268 and $7,322, respectively		39,729	21,571
Unrealized interest rate swap holding loss, net of taxes of ($1,917) and $0, respectively		(5,740)
Less: reclassified adjustments for gain included in net income, net income tax expense of $0 and $4, respectively			(13)
Net change in accumulated other comprehensive income		33,989	21,558
Total comprehensive income		$ 69,421	$ 66,201
Earnings per share:
Basic		$ 0.28	$ 0.47
Diluted		$ 0.28	$ 0.46
Common shares used in the calculation of earnings per share:
Basic	[1]	124,798,732	95,740,856
Diluted	[1]	125,341,227	96,500,740
Mortgage Banking Revenue [Member]
Non-interest income:
Non interest income		$ 10,973	$ 4,193
Service Charges on Deposit Accounts [Member]
Non-interest income:
Non interest income		$ 7,522	$ 6,678

[1] Excludes participating shares