CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 2,265,297	$ 1,360,887
Short-term investments	305,548	299,916
Securities purchased under resale agreements (“resale agreements”)	1,800,000	1,600,000
Available-for-sale investment securities, at fair value	3,205,238	3,773,226
Held-to-maturity investment security, at cost (fair value of $160,135 in 2016)	160,135	0
Loans held for sale	28,795	31,958
Loans held-for-investment (net of allowance for loan losses of $260,238 in 2016 and $264,959 in 2015)	23,494,126	23,378,789
Investment in Federal Home Loan Bank (“FHLB”) stock, at cost	18,157	28,770
Investment in Federal Reserve Bank stock, at cost	55,079	54,932
Investments in qualified affordable housing partnerships, net	186,999	193,978
Premises and equipment (net of accumulated depreciation of $103,814 in 2016 and $100,060 in 2015)	165,234	166,993
Goodwill	469,433	469,433
Other assets	955,128	992,040
TOTAL	33,109,169	32,350,922
Customer deposits:
Noninterest-bearing	9,461,568	8,656,805
Interest-bearing	19,134,679	18,819,176
Total deposits	28,596,247	27,475,981
Short-term borrowings	10,093	0
FHLB advances	319,973	1,019,424
Securities sold under repurchase agreements (“repurchase agreements”)	200,000	0
Long-term debt	201,102	206,084
Accrued expenses and other liabilities	564,973	526,483
Total liabilities	$ 29,892,388	$ 29,227,972
COMMITMENTS AND CONTINGENCIES (Note 10)
STOCKHOLDERS’ EQUITY
Common stock, $0.001 par value, 200,000,000 shares authorized; 164,496,260 and 164,246,517 shares issued in 2016 and 2015, respectively.	$ 164	$ 164
Additional paid-in capital	1,706,856	1,701,295
Retained earnings	1,951,035	1,872,594
Treasury stock at cost — 20,432,509 shares in 2016 and 20,337,284 shares in 2015.	(439,216)	(436,162)
Accumulated other comprehensive loss (“AOCI”), net of tax	(2,058)	(14,941)
Total stockholders’ equity	3,216,781	3,122,950
TOTAL	$ 33,109,169	$ 32,350,922