Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets
Cash and due from banks	$ 133,507	$ 138,616
Short-term investments and interest-bearing deposits	1,589,086	1,282,462
Securities available-for-sale (amortized cost of $991,724 at June 30, 2021 and $1,019,230 at December 31, 2020)	1,002,515	1,036,550
Loans	15,690,689	15,644,396
Less: Allowance for loan losses	(131,256)	(166,538)
Unamortized deferred loan fees, net	(6,865)	(2,494)
Loans, net	15,552,568	15,475,364
Equity securities	20,113	23,744
Federal Home Loan Bank stock	17,250	17,250
Other real estate owned, net	4,871	4,918
Affordable housing investments and alternative energy partnerships, net	286,833	309,016
Premises and equipment, net	100,917	102,998
Customers’ liability on acceptances	7,560	13,753
Accrued interest receivable	56,092	59,032
Goodwill	372,189	372,189
Other intangible assets, net	5,041	5,434
Right-of-use assets - operating leases	31,310	30,919
Other assets	168,510	170,889
Total assets	19,348,362	19,043,134
Deposits:
Non-interest-bearing demand deposits	3,664,931	3,365,086
Interest-bearing deposits:
NOW deposits	2,026,154	1,926,135
Money market deposits	4,003,043	3,359,191
Savings deposits	900,106	785,672
Time deposits	5,943,279	6,673,317
Total deposits	16,537,513	16,109,401
Advances from the Federal Home Loan Bank	20,000	150,000
Other borrowings of affordable housing investments	23,249	23,714
Long-term debt	119,136	119,136
Acceptances outstanding	7,560	13,753
Lease liabilities - operating leases	34,194	33,484
Other liabilities	154,353	175,502
Total liabilities	16,896,005	16,624,990
Commitments and contingencies	0	0
Stockholders’ Equity
Common stock, $0.01 par value, 100,000,000 shares authorized; 90,825,937 issued and 78,158,590 outstanding at June 30, 2021, and 90,643,206 issued and 79,508,265 outstanding at December 31, 2020	908	906
Additional paid-in-capital	967,166	964,734
Accumulated other comprehensive income, net	2,372	5,310
Retained earnings	1,887,571	1,789,325
Treasury stock, at cost (12,638,514 shares at June 30, 2021, and 11,134,941 shares at December 31, 2020)	(405,660)	(342,131)
Total equity	2,452,357	2,418,144
Total liabilities and equity	$ 19,348,362	$ 19,043,134