CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loans and Leases Receivable, Net of Deferred Income	$ 9,307,819	$ 9,201,665
ASSETS
Cash and due from banks	261,892	200,691
Interest-bearing deposits with other banks	71,071	56,948
Investment securities available-for-sale, at fair value (amortized cost $2,857,355 at March 31, 2020 and $2,798,298 at December 31, 2019)	2,908,688	2,852,084
Investment securities held-to-maturity (fair value $140,065 at March 31, 2020 and $142,821 at December 31, 2019)	136,744	142,862
Other investments	143,581	125,020
Loans held for sale	27,334	13,680
Loans
Total loans and leases	9,307,819	9,201,665
Loans and Leases Receivable, Allowance	143,885	57,650
Net loans and leases	9,163,934	9,144,015
Premises and equipment	212,787	214,506
Goodwill	937,771	937,771
Other Finite-Lived Intangible Assets, Gross	73,258	76,201
Accrued interest and other assets	1,120,507	747,847
Total assets	15,057,567	14,511,625
Deposits
Interest-bearing	2,498,109	2,364,881
Savings	2,978,250	2,960,979
Time	2,435,858	2,240,441
Total interest-bearing deposits	7,912,217	7,566,301
Noninterest-bearing	2,723,341	2,643,928
Total deposits	10,635,558	10,210,229
Federal funds purchased and securities sold under agreements to repurchase	215,824	165,181
FHLB short-term borrowings	1,181,900	1,151,000
Total short-term borrowings	1,397,724	1,316,181
Long-term debt	325,566	414,376
Total borrowed funds	1,723,290	1,730,557
Accrued interest and other liabilities	519,336	323,134
Total liabilities	12,878,184	12,263,920
SHAREHOLDERS' EQUITY
Common stock - no par value Authorized - 160,000,000 shares Issued - 104,281,794 shares in 2018 and 68,730,731 shares in 2017	1,633,950	1,640,771
Retained earnings	660,653	711,249
Accumulated other comprehensive loss	11,788	13,323
Treasury stock, at cost, 6,312,836 shares in 2020 and 5,790,796 shares in 2019	(127,008)	(117,638)
Total shareholders' equity	2,179,383	2,247,705
Total liabilities and shareholders' equity	15,057,567	14,511,625
Commercial real estate
Loans and Leases Receivable, Net of Deferred Income	4,278,257	4,194,651
Loans
Total loans and leases	4,278,257	4,194,651
Construction real estate
Loans and Leases Receivable, Net of Deferred Income	500,311	493,182
Loans
Total loans and leases	500,311	493,182
Commercial
Loans and Leases Receivable, Net of Deferred Income	2,477,773	2,465,877
Loans
Total loans and leases	2,477,773	2,465,877
Lease financing
Loans and Leases Receivable, Net of Deferred Income	82,602	88,364
Loans
Total loans and leases	82,602	88,364
Residential real estate
Loans and Leases Receivable, Net of Deferred Income	1,061,792	1,055,949
Loans
Total loans and leases	1,061,792	1,055,949
Home equity
Loans and Leases Receivable, Net of Deferred Income	781,243	771,869
Loans
Total loans and leases	781,243	771,869
Installment
Loans and Leases Receivable, Net of Deferred Income	80,085	82,589
Loans
Total loans and leases	80,085	82,589
Credit card
Loans and Leases Receivable, Net of Deferred Income	45,756	49,184
Loans
Total loans and leases	$ 45,756	$ 49,184