CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Cash and due from banks:
Non-interest bearing	$ 175	$ 7,704
Interest bearing	369,601	206,969
Cash and cash equivalents	369,776	214,673
Investment securities (including securities recorded at fair value of $9,290,883 and $7,759,237)	9,300,883	7,769,237
Non-marketable equity securities	208,614	253,664
Loans held for sale	3,816	37,926
Loans and Leases Receivable, Net of Deferred Income	23,779,315	23,154,988
Financing Receivable, Allowance for Credit Loss	(274,128)	(108,671)
Loans, net	23,505,187	23,046,317
Bank owned life insurance	292,773	282,151
Operating lease equipment, net	676,321	698,153
Goodwill and other intangible assets	77,641	77,674
Other assets	593,586	491,498
Total assets	35,028,597	32,871,293
Demand deposits:
Non-interest bearing	6,789,622	4,294,824
Interest bearing	2,916,891	2,130,976
Savings and money market	11,002,794	10,621,544
Time	5,887,903	7,347,247
Total deposits	26,597,210	24,394,591
Federal funds purchased	180,000	100,000
FHLB and PPPLF borrowings	4,118,460	4,480,501
Notes and other borrowings	722,592	429,338
Other liabilities	545,511	486,084
Total liabilities	32,163,773	29,890,514
Commitments and contingencies
Stockholders' equity:
Common stock, par value $0.01 per share, 400,000,000 shares authorized; 92,388,641 and 95,128,231 shares issued and outstanding	924	951
Paid-in capital	995,438	1,083,920
Retained earnings	1,950,288	1,927,735
Accumulated other comprehensive loss	(81,826)	(31,827)
Total stockholders' equity	2,864,824	2,980,779
Total liabilities and stockholders' equity	35,028,597	32,871,293
Condensed Balance Sheet Statements, Captions [Line Items]
Financing Receivable, Allowance for Credit Loss	274,128	108,671
Loans [Member]
Cash and due from banks:
Financing Receivable, Allowance for Credit Loss	(274,128)	(108,671)
Condensed Balance Sheet Statements, Captions [Line Items]
Financing Receivable, Allowance for Credit Loss	$ 274,128	$ 108,671