Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 389,233	$ 376,719
Overnight investments	3,107,575	1,107,844
Investment in marketable equity securities	114,316	82,333
Debt Securities, Available-for-sale	8,619,282	7,059,674
Investment securities held to maturity at cost	774,878	30,996
Loans held for sale	107,881	67,869
Loans and leases	32,418,425	28,881,496
Allowance for loan and lease losses	(222,450)	(225,141)
Total loan and leases	32,195,975	28,656,355
Premises and equipment	1,255,688	1,244,396
Other real estate owned	53,850	46,591
Income earned not collected	175,496	123,154
Goodwill recorded for Community Financial	350,298	349,398
Other intangible assets	58,606	68,276
Other assets	663,116	610,891
Total assets	47,866,194	39,824,496
Deposits [Abstract]
Noninterest-bearing deposits	18,149,466	12,926,796
Interest-bearing deposits	23,329,779	21,504,440
Total deposits	41,479,245	34,431,236
Securities sold under customer repurchase agreements	740,276	442,956
Federal Home Loan Bank borrowings	657,682	572,185
Subordinated Debt	504,246	163,412
Other Borrowings	96,791	148,318
FDIC shared-loss payable	15,025	112,395
Other liabilities	381,485	367,810
Total liabilities	43,874,750	36,238,312
Shareholders' Equity
Preferred stock	339,937	0
Surplus	0	44,081
Retained earnings	3,651,237	3,658,197
Accumulated other comprehensive loss	(9,664)	(126,723)
Total shareholders' equity	3,991,444	3,586,184
Total liabilities and shareholders' equity	47,866,194	39,824,496
Class A Common Stock
Shareholders' Equity
Common stock	8,929	9,624
Class B Common Stock
Shareholders' Equity
Common stock	$ 1,005	$ 1,005