CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Loans and Leases Receivable, Net of Deferred Income	$ 9,360,931	$ 9,900,970
ASSETS
Cash and due from banks	209,748	231,054
Interest-bearing deposits with other banks	29,799	20,305
Investment securities available-for-sale, at fair value (amortized cost $4,065,301 at September 30, 2021 and $3,330,029 at December 31, 2020)	4,114,094	3,424,580
Investment securities held-to-maturity (fair value $105,679 at September 30, 2021 and $136,698 at December 31, 2020)	103,886	131,687
Other investments	97,831	133,198
Loans held for sale	33,835	41,103
Loans
Total loans and leases	9,360,931	9,900,970
Loans and Leases Receivable, Allowance	(148,903)	(175,679)
Net loans and leases	9,212,028	9,725,291
Premises and equipment	192,580	207,211
Goodwill	937,771	937,771
Other Finite-Lived Intangible Assets, Gross	56,811	64,552
Accrued interest and other assets	968,210	1,056,382
Total assets	15,956,593	15,973,134
Deposits
Interest-bearing	2,916,860	2,914,787
Savings	4,223,905	3,680,774
Time	1,517,419	1,872,733
Total interest-bearing deposits	8,658,184	8,468,294
Noninterest-bearing	4,019,197	3,763,709
Total deposits	12,677,381	12,232,003
Federal funds purchased and securities sold under agreements to repurchase	81,850	166,594
FHLB short-term borrowings	107,000	0
Total short-term borrowings	188,850	166,594
Long-term debt	313,230	776,202
Total borrowed funds	502,080	942,796
Accrued interest and other liabilities	540,962	516,265
Total liabilities	13,720,423	13,691,064
SHAREHOLDERS' EQUITY
Authorized - 160,000,000 shares; Issued - 104,281,794 shares at both September 30, 2021 and December 31, 2020	1,637,065	1,638,947
Retained earnings	812,082	720,429
Accumulated other comprehensive loss	14,230	48,664
Treasury stock, at cost, 10,538,997 shares at September 30, 2021 and 6,259,865 shares at December 31, 2020	(227,207)	(125,970)
Total shareholders' equity	2,236,170	2,282,070
Total liabilities and shareholders' equity	15,956,593	15,973,134
Commercial
Loans and Leases Receivable, Net of Deferred Income	2,602,848	3,007,509
Loans
Total loans and leases	2,602,848	3,007,509
Lease financing
Loans and Leases Receivable, Net of Deferred Income	67,855	72,987
Loans
Total loans and leases	67,855	72,987
Construction real estate
Loans and Leases Receivable, Net of Deferred Income	477,004	636,096
Loans
Total loans and leases	477,004	636,096
Commercial real estate
Loans and Leases Receivable, Net of Deferred Income	4,438,374	4,307,858
Loans
Total loans and leases	4,438,374	4,307,858
Residential real estate
Loans and Leases Receivable, Net of Deferred Income	922,492	1,003,086
Loans
Total loans and leases	922,492	1,003,086
Home equity
Loans and Leases Receivable, Net of Deferred Income	709,050	743,099
Loans
Total loans and leases	709,050	743,099
Installment
Loans and Leases Receivable, Net of Deferred Income	96,077	81,850
Loans
Total loans and leases	96,077	81,850
Credit card
Loans and Leases Receivable, Net of Deferred Income	47,231	48,485
Loans
Total loans and leases	$ 47,231	$ 48,485