Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
ASSETS
Cash and due from banks	$ 155,008	$ 125,844
Interest-bearing deposits in banks	365,494	389,362
Cash and cash equivalents	520,502	515,206
Debt securities available-for-sale	2,249,876	2,274,581
Debt securities held-to-maturity (fair value $301,595 and $287,904)	290,404	283,533
Loans held for sale at fair value	89,959	58,484
Loans and leases held for investment	8,935,424	8,812,553
Less allowance for credit losses - loans and leases	(81,905)	(62,089)
Loans and leases, net	8,853,519	8,750,464
Premises and equipment, net	214,744	215,976
Bank owned life insurance	200,778	202,664
Accrued interest receivable	31,570	32,660
Net deferred tax asset	30,715	34,059
Derivative financial instruments	82,668	35,007
Goodwill and other intangible assets, net	341,207	342,247
Other assets	179,924	171,135
Total assets	13,085,866	12,916,016
Deposits:
Noninterest-bearing demand	3,624,806	3,477,979
Interest-bearing deposits	7,410,120	7,419,265
Total deposits	11,034,926	10,897,244
Long-term debt	212,849	212,664
Derivative financial instruments	27,349	15,516
Accrued expenses and other liabilities	170,130	154,900
Total liabilities	11,445,254	11,280,324
Shareholders' equity:
Common stock, $1 par value; 150,000,000 shares authorized; 78,283,544 and 79,013,729 shares issued and outstanding	78,284	79,014
Common stock issuable; 591,053 and 664,640 shares	10,534	11,491
Capital surplus	1,478,719	1,496,641
Retained earnings	54,206	40,152
Accumulated other comprehensive income	18,869	8,394
Total shareholders' equity	1,640,612	1,635,692
Total liabilities and shareholders' equity	$ 13,085,866	$ 12,916,016