Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Cash and due from banks	$ 156,287	$ 138,616
Short-term investments and interest-bearing deposits	1,667,875	1,282,462
Securities available-for-sale (amortized cost of $1,073,074 at September 30, 2021 and $1,019,230 at December 31, 2020)	1,079,216	1,036,550
Loans	15,976,781	15,644,396
Less: Allowance for loan losses	(131,945)	(166,538)
Unamortized deferred loan fees, net	(3,835)	(2,494)
Loans, net	15,841,001	15,475,364
Equity securities	20,117	23,744
Federal Home Loan Bank stock	17,250	17,250
Other real estate owned, net	5,251	4,918
Affordable housing investments and alternative energy partnerships, net	313,517	309,016
Premises and equipment, net	100,344	102,998
Customers’ liability on acceptances	13,185	13,753
Accrued interest receivable	56,844	59,032
Goodwill	372,189	372,189
Other intangible assets, net	4,831	5,434
Right-of-use assets - operating leases	29,179	30,919
Other assets	183,354	170,889
Total assets	19,860,440	19,043,134
Deposits:
Non-interest-bearing demand deposits	4,024,504	3,365,086
Interest-bearing deposits:
NOW deposits	2,202,956	1,926,135
Money market deposits	4,132,912	3,359,191
Savings deposits	920,138	785,672
Time deposits	5,726,360	6,673,317
Total deposits	17,006,870	16,109,401
Advances from the Federal Home Loan Bank	20,000	150,000
Other borrowings of affordable housing investments	23,197	23,714
Long-term debt	119,136	119,136
Acceptances outstanding	13,185	13,753
Lease liabilities - operating leases	32,028	33,484
Other liabilities	182,733	175,502
Total liabilities	17,397,149	16,624,990
Commitments and contingencies	0	0
Stockholders’ Equity
Common stock, $0.01 par value, 100,000,000 shares authorized; 90,850,175 issued and 77,240,215 outstanding at September 30, 2021, and 90,643,206 issued and 79,508,265 outstanding at December 31, 2020	909	906
Additional paid-in-capital	969,719	964,734
Accumulated other comprehensive income, net	(368)	5,310
Retained earnings	1,935,831	1,789,325
Treasury stock, at cost (13,609,960 shares at September 30, 2021, and 11,134,941 shares at December 31, 2020)	(442,800)	(342,131)
Total equity	2,463,291	2,418,144
Total liabilities and equity	$ 19,860,440	$ 19,043,134