Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
ASSETS:
Cash and due from banks		$ 179,505	$ 150,464
Interest-earning deposits in financial institutions		5,678,587	3,010,197
Total cash, cash equivalents, and restricted cash		5,858,092	3,160,661
Securities available-for-sale, at fair value		7,198,608	5,235,591
Federal Home Loan Bank stock, at cost		17,250	17,250
Total investment securities		7,215,858	5,252,841
Loans Receivable Held-for-sale, Amount		0	0
Gross loans and leases held for investment		19,580,731	19,153,357
Deferred fees, net		(74,474)	(69,980)
Allowance for loan and lease losses		(225,600)	(348,181)
Total loans and leases held for investment, net	[1]	19,280,657	18,735,196
Equipment leased to others under operating leases		313,574	333,846
Premises and equipment, net		39,541	39,234
Foreclosed assets, net		13,227	14,027
Goodwill		1,204,118	1,078,670
Core deposit and customer relationship intangibles, net		18,423	23,641
Other assets		924,497	860,326
Total assets		34,867,987	29,498,442
LIABILITIES AND STOCKHOLDERS' EQUITY
Noninterest-bearing deposits		11,252,286	9,193,827
Interest-bearing deposits		18,394,748	15,746,890
Total deposits		29,647,034	24,940,717
Borrowings		6,625	5,000
Subordinated debentures		861,788	465,812
Accrued interest payable and other liabilities		505,859	491,962
Total liabilities		31,021,306	25,903,491
Commitments and contingencies
Preferred Stock, Shares Authorized		5,000,000
Preferred stock ($0.01 par value; 5,000,000 shares authorized; none issued and outstanding)		$ 0	0
Common stock ($0.01 par value, 200,000,000 shares authorized at March 31, 2021 and December 31, 2020; 121,480,278 and 120,736,834 shares issued, respectively, including 2,189,181 and 1,608,126 shares of unvested restricted stock, respectively)		1,221	1,207
Additional paid-in capital		3,056,522	3,100,633
Retained earnings		740,309	409,391
Treasury stock, at cost (2,374,636 and 2,321,981 shares at March 31, 2021 and December 31, 2020)		(96,887)	(88,803)
Accumulated other comprehensive income, net		145,516	172,523
Total stockholders' equity		3,846,681	3,594,951
Total liabilities and stockholders' equity		$ 34,867,987	$ 29,498,442

[1] Excludes accrued interest receivable of $73.5 million and $79.7 million at June 30, 2021 and December 31, 2020, respectively, which is recorded in "Other assets" on the condensed consolidated balance sheets.