Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 107,779	$ 102,772
Interest-earning balances due from Federal Reserve and federal funds sold	591,403	3,325
Total cash and cash equivalents	699,182	106,097
Interest-earning balances due from depository institutions	91,272	32,691
Investment securities available-for-sale, at fair value (with amortized cost of $2,181,478 at June 30, 2016, and $2,337,715 at December 31, 2015)	2,248,032	2,368,646
Investment securities held-to-maturity (with fair value of $743,481 at June 30, 2016, and $853,039 at December 31, 2015)	724,357	850,989
Total investment securities	2,972,389	3,219,635
Investment in stock of Federal Home Loan Bank (FHLB)	17,688	17,588
Loans and lease finance receivables	4,237,928	4,016,937
Allowance for loan losses	(60,938)	(59,156)
Net loans and lease finance receivables	4,176,990	3,957,781
Premises and equipment, net	39,702	31,382
Bank owned life insurance	133,231	130,956
Accrued interest receivable	21,389	22,732
Intangibles	5,586	2,265
Goodwill	88,174	74,244
Income taxes	27,693	47,251
Other assets	39,011	28,578
Total assets	8,312,307	7,671,200
Deposits:
Noninterest-bearing	3,666,206	3,250,174
Interest-bearing	2,919,780	2,667,086
Total deposits	6,585,986	5,917,260
Customer repurchase agreements	590,465	690,704
Other borrowings	0	46,000
Deferred compensation	11,920	11,269
Junior subordinated debentures	25,774	25,774
Payable for securities purchased	44,723	1,696
Other liabilities	61,976	55,098
Total liabilities	7,320,844	6,747,801
Commitments and Contingencies
Stockholders' Equity
Common stock, authorized, 225,000,000 shares without par; issued and outstanding 107,946,952 at June 30, 2016, and 106,384,982 at December 31, 2015	527,452	502,571
Retained earnings	422,939	399,919
Accumulated other comprehensive income, net of tax	41,072	20,909
Total stockholders' equity	991,463	923,399
Total liabilities and stockholders' equity	$ 8,312,307	$ 7,671,200