Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 352,419	$ 376,719
Overnight investments	3,137,945	1,107,844
Investment in marketable equity securities	93,074	82,333
Debt Securities, Available-for-sale	9,019,788	7,059,674
Investment securities held to maturity at cost	747,732	30,996
Loans held for sale	120,305	67,869
Loans and leases	32,845,144	28,881,496
Allowance for loan and lease losses	(223,936)	(225,141)
Total loan and leases	32,621,208	28,656,355
Premises and equipment	1,255,250	1,244,396
Other real estate owned	52,789	46,591
Income earned not collected	151,737	123,154
Goodwill recorded for Community Financial	350,298	349,398
Other intangible assets	54,170	68,276
Other assets	710,158	610,891
Total assets	48,666,873	39,824,496
Deposits [Abstract]
Noninterest-bearing deposits	18,234,561	12,926,796
Interest-bearing deposits	24,016,045	21,504,440
Total deposits	42,250,606	34,431,236
Securities sold under customer repurchase agreements	693,889	442,956
Federal Home Loan Bank borrowings	655,179	572,185
Subordinated Debt	504,381	163,412
Other Borrowings	92,456	148,318
FDIC shared-loss payable	15,313	112,395
Other liabilities	380,635	367,810
Total liabilities	44,592,459	36,238,312
Shareholders' Equity
Preferred stock	339,937	0
Surplus	0	44,081
Retained earnings	3,738,417	3,658,197
Accumulated other comprehensive loss	(13,756)	(126,723)
Total shareholders' equity	4,074,414	3,586,184
Total liabilities and shareholders' equity	48,666,873	39,824,496
Class A Common Stock
Shareholders' Equity
Common stock	8,811	9,624
Class B Common Stock
Shareholders' Equity
Common stock	$ 1,005	$ 1,005