CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Loans and Leases Receivable, Net of Deferred Income	$ 9,241,617	$ 9,288,299
ASSETS
Cash and due from banks	230,428	220,031
Interest-bearing deposits with other banks	227,147	214,811
Investment securities available-for-sale, at fair value (amortized cost $4,113,169 at March 31, 2022 and $4,180,589 at December 31, 2021)	3,957,882	4,207,846
Investment securities held-to-maturity (fair value $90,001 at March 31, 2022 and $99,898 at December 31, 2021)	92,597	98,420
Other investments	114,563	102,971
Loans held for sale	12,670	29,482
Loans
Total loans and leases	9,241,617	9,288,299
Loans and Leases Receivable, Allowance	(124,130)	(131,992)
Net loans and leases	9,117,487	9,156,307
Property, Plant, and Equipment, Excluding Lessor Asset under Operating Lease, after Accumulated Depreciation	190,975	193,040
Operating leases	87,432	73,857
Goodwill	999,959	1,000,749
Other Finite-Lived Intangible Assets, Gross	85,891	88,898
Accrued interest and other assets	892,119	942,729
Total assets	16,009,150	16,329,141
Deposits
Interest-bearing	3,246,646	3,198,745
Savings	4,188,867	4,157,374
Time	1,121,966	1,330,263
Total interest-bearing deposits	8,557,479	8,686,382
Noninterest-bearing	4,261,429	4,185,572
Total deposits	12,818,908	12,871,954
Federal funds purchased and securities sold under agreements to repurchase	0	51,203
FHLB short-term borrowings	185,000	225,000
Other Short-term Borrowings	0	20,000
Total short-term borrowings	185,000	296,203
Long-term debt	379,840	409,832
Total borrowed funds	564,840	706,035
Accrued interest and other liabilities	487,957	492,210
Total liabilities	13,871,705	14,070,199
SHAREHOLDERS' EQUITY
Authorized - 160,000,000 shares; Issued - 104,281,794 shares at both March 31, 2022 and December 31, 2021	1,634,903	1,640,358
Retained earnings	857,178	837,473
Accumulated other comprehensive loss	(142,477)	(433)
Treasury stock, at cost, 9,830,298 shares at March 31, 2022 and 10,132,554 shares at December 31, 2021	(212,159)	(218,456)
Total shareholders' equity	2,137,445	2,258,942
Total liabilities and shareholders' equity	16,009,150	16,329,141
Commercial
Loans and Leases Receivable, Net of Deferred Income	2,800,209	2,720,028
Loans
Total loans and leases	2,800,209	2,720,028
Lease financing
Loans and Leases Receivable, Net of Deferred Income	125,867	109,624
Loans
Total loans and leases	125,867	109,624
Construction real estate
Loans and Leases Receivable, Net of Deferred Income	479,744	455,894
Loans
Total loans and leases	479,744	455,894
Commercial real estate
Loans and Leases Receivable, Net of Deferred Income	4,031,484	4,226,614
Loans
Total loans and leases	4,031,484	4,226,614
Residential real estate
Loans and Leases Receivable, Net of Deferred Income	913,838	896,069
Loans
Total loans and leases	913,838	896,069
Home equity
Loans and Leases Receivable, Net of Deferred Income	707,973	708,399
Loans
Total loans and leases	707,973	708,399
Installment
Loans and Leases Receivable, Net of Deferred Income	132,197	119,454
Loans
Total loans and leases	132,197	119,454
Credit card
Loans and Leases Receivable, Net of Deferred Income	50,305	52,217
Loans
Total loans and leases	$ 50,305	$ 52,217