Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 360,375	$ 396,836
Interest-bearing deposits in other banks	333,642	606,801
Investment securities	4,075,644	4,498,342
Loans held for sale	904	432
Loans and leases	13,211,650	13,076,191
Less: allowance for loan and lease losses	130,530	141,718
Net loans and leases	13,081,120	12,934,473
Premises and equipment, net	316,885	304,996
Other real estate owned and repossessed personal property	319	751
Accrued interest receivable	45,239	48,920
Bank-owned life insurance	453,873	446,076
Goodwill	995,492	995,492
Mortgage servicing rights	12,668	16,155
Other assets	490,573	446,404
Total assets	20,166,734	20,695,678
Deposits:
Interest-bearing	10,564,922	11,142,127
Noninterest-bearing	5,880,072	6,007,941
Total deposits	16,444,994	17,150,068
Short-term borrowings	400,000
Long-term borrowings	200,019	600,026
Retirement benefits payable	138,222	127,909
Other liabilities	343,241	292,836
Total liabilities	17,526,476	18,170,839
Commitments and contingent liabilities (Note 18)
Stockholders' equity
Common stock ($0.01 par value; authorized 300,000,000 shares; issued/outstanding: 139,917,150 / 129,928,479 as of December 31, 2019; issued/outstanding: 139,656,674 / 134,874,302 as of December 31, 2018)	1,399	1,397
Additional paid-in capital	2,503,677	2,495,853
Retained earnings	437,072	291,919
Accumulated other comprehensive loss, net	(31,749)	(132,195)
Treasury stock (9,988,671 shares as of December 31, 2019 and 4,782,372 shares as of December 31, 2018)	(270,141)	(132,135)
Total stockholders' equity	2,640,258	2,524,839
Total liabilities and stockholders' equity	$ 20,166,734	$ 20,695,678