Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
OPERATING ACTIVITIES
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 72,099	$ 31,786
INVESTING ACTIVITIES
Proceeds from maturities and calls of securities held to maturity	210	2,000
Proceeds from sales of securities available for sale	164,850	248,187
Proceeds from maturities and calls of securities available for sale	248,856	136,576
Purchases of securities available for sale	(159,548)	(338,983)
Proceeds from sales of equity securities	1,042	1,497
Purchases of equity securities	(514)	(618)
Proceeds from sales and redemptions of other investment securities	97,177	50,271
Purchases of other investment securities	(110,191)	(75,228)
Redemption of bank-owned life insurance policies	1,186	2,829
Purchases of bank premises and equipment	(6,831)	(4,110)
Proceeds from sales of bank premises and equipment	278	251
Proceeds from the sales of OREO properties	5,106	3,870
Acquisition of Carolina Financial Corporation, net of cash paid	629,107	0
Net change in loans	(1,028,035)	(203,898)
NET CASH USED IN INVESTING ACTIVITIES	(157,307)	(177,356)
FINANCING ACTIVITIES
Cash dividends paid	(71,862)	(69,732)
Acquisition of treasury stock	(608)	(18,104)
Proceeds from exercise of stock options	288	1,020
Repayment of long-term Federal Home Loan Bank borrowings	(828,000)	(1,115,000)
Proceeds from issuance of long-term Federal Home Loan Bank borrowings	250,000	1,400,000
Changes in:
Deposits	2,159,196	409,731
Federal funds purchased, securities sold under agreements to repurchase and other short-term borrowings	(198,486)	(229,168)
NET CASH PROVIDED BY FINANCING ACTIVITIES	1,310,528	378,747
Increase in cash and cash equivalents	1,225,320	233,177
Cash and cash equivalents at beginning of year	837,493	1,020,396
Cash and cash equivalents at end of period	2,062,813	1,253,573
Noncash investing activities:
Transfers of loans to OREO	18,925	3,133
Transfer of held to maturity debt securities to available for sale debt securities	$ 0	$ 11,544

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