Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 137,196	$ 119,445
Interest-earning balances due from Federal Reserve	6,594	2,188
Total cash and cash equivalents	143,790	121,633
Interest-earning balances due from depository institutions	20,521	47,848
Investment securities available-for-sale, at fair value (with amortized cost of $2,155,330 at September 30, 2017, and $2,255,874 at December 31, 2016)	2,175,648	2,270,466
Investment securities held-to-maturity (with fair value of $842,050 at September 30, 2017, and $897,374 at December 31, 2016)	848,382	911,676
Total investment securities	3,024,030	3,182,142
Investment in stock of Federal Home Loan Bank (FHLB)	17,688	17,688
Loans and lease finance receivables	4,746,424	4,395,064
Allowance for loan losses	(60,631)	(61,540)
Net loans and lease finance receivables	4,685,793	4,333,524
Premises and equipment, net	46,654	42,086
Bank owned life insurance (BOLI)	145,970	134,785
Accrued interest receivable	21,518	22,259
Intangibles	7,177	5,010
Goodwill	116,564	89,533
Other real estate owned (OREO)	4,527	4,527
Income taxes	48,145	45,429
Asset held-for-sale	0	3,411
Other assets	21,635	23,832
Total assets	8,304,012	8,073,707
Deposits:
Noninterest-bearing	3,908,809	3,673,541
Interest-bearing	2,699,287	2,636,139
Total deposits	6,608,096	6,309,680
Customer repurchase agreements	455,069	603,028
Other borrowings	63,000	53,000
Deferred compensation	18,024	12,361
Junior subordinated debentures	25,774	25,774
Payable for securities purchased	1,625	23,777
Other liabilities	55,960	55,225
Total liabilities	7,227,548	7,082,845
Commitments and Contingencies
Stockholders' Equity
Common stock, authorized, 225,000,000 shares without par; issued and outstanding 110,157,384 at September 30, 2017, and 108,251,981 at December 31, 2016	572,685	531,192
Retained earnings	491,935	449,499
Accumulated other comprehensive income, net of tax	11,844	10,171
Total stockholders' equity	1,076,464	990,862
Total liabilities and stockholders' equity	$ 8,304,012	$ 8,073,707