Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
ASSETS:
Cash and due from banks	$ 185,075	$ 175,830
Interest-earning deposits in financial institutions	422,663	209,937
Total cash, cash equivalents, and restricted cash	607,738	385,767
Securities available-for-sale, at fair value	3,807,244	4,009,431
Federal Home Loan Bank stock, at cost	43,146	32,103
Total investment securities	3,850,390	4,041,534
Gross loans and leases held for investment	18,532,740	18,026,365
Deferred fees, net	(59,888)	(68,652)
Allowance for loan and lease losses	(135,037)	(132,472)
Total loans and leases held for investment, net	18,337,815	17,825,241
Equipment leased to others under operating leases	300,668	292,677
Premises and equipment, net	38,162	34,661
Foreclosed assets, net	1,472	5,299
Deferred tax asset, net	0	17,489
Goodwill	2,548,670	2,548,670
Core deposit and customer relationship intangibles, net	47,380	57,120
Other assets	612,119	522,896
Total assets	26,344,414	25,731,354
LIABILITIES AND STOCKHOLDERS' EQUITY
Noninterest-bearing deposits	7,299,213	7,888,915
Interest-bearing deposits	11,506,543	10,981,586
Total deposits	18,805,756	18,870,501
Borrowings	1,913,059	1,371,114
Subordinated debentures	456,112	453,846
Accrued interest payable and other liabilities	317,477	210,305
Total liabilities	21,492,404	20,905,766
Commitments and contingencies
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, 2019 and December 31, 2018; 122,204,565 and 125,079,705 shares issued, respectively, including 1,241,543 and 1,888,872 shares of unvested restricted stock, respectively)	1,219	1,251
Additional paid-in capital	3,435,679	3,722,723
Retained earnings	1,424,341	1,182,674
Treasury stock, at cost (2,077,845 and 1,889,872 shares at June 30, 2019 and December 31, 2018)	(82,295)	(74,985)
Accumulated other comprehensive income (loss), net	73,066	(6,075)
Total stockholders' equity	4,852,010	4,825,588
Total liabilities and stockholders' equity	$ 26,344,414	$ 25,731,354