Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 358,863	$ 396,836
Interest-bearing deposits in other banks	985,154	606,801
Investment securities	4,157,082	4,498,342
Loans held for sale	1,594	432
Loans and leases	12,843,396	13,076,191
Less: allowance for loan and lease losses	132,964	141,718
Net loans and leases	12,710,432	12,934,473
Premises and equipment, net	315,309	304,996
Other real estate owned and repossessed personal property	82	751
Accrued interest receivable	44,671	48,920
Bank-owned life insurance	453,410	446,076
Goodwill	995,492	995,492
Mortgage servicing rights	13,630	16,155
Other assets	562,501	446,404
Total assets	20,598,220	20,695,678
Deposits:
Interest-bearing	11,136,424	11,142,127
Noninterest-bearing	5,720,822	6,007,941
Total deposits	16,857,246	17,150,068
Short-term borrowings	400,000
Long-term borrowings	200,018	600,026
Retirement benefits payable	128,442	127,909
Other liabilities	357,956	292,836
Total liabilities	17,943,662	18,170,839
Commitments and contingent liabilities (Note 13)
Stockholders' equity
Common stock ($0.01 par value; authorized 300,000,000 shares; issued/outstanding: 139,908,699 / 131,260,900 as of September 30, 2019; issued/outstanding: 139,656,674 / 134,874,302 as of December 31, 2018)	1,399	1,397
Additional paid-in capital	2,501,324	2,495,853
Retained earnings	403,317	291,919
Accumulated other comprehensive loss, net	(18,774)	(132,195)
Treasury stock (8,647,799 shares as of September 30, 2019 and 4,782,372 shares as of December 31, 2018)	(232,708)	(132,135)
Total stockholders' equity	2,654,558	2,524,839
Total liabilities and stockholders' equity	$ 20,598,220	$ 20,695,678