Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 194,928	$ 225,333
Short-term investments and interest-bearing deposits	343,452	374,957
Securities available-for-sale (amortized cost of $1,322,579 at March 31, 2019 and $1,267,731 at December 31, 2018)	1,309,853	1,242,509
Loans	14,277,422	13,995,788
Less: Allowance for loan losses	(122,555)	(122,391)
Unamortized deferred loan fees, net	(1,549)	(1,565)
Loans, net	14,153,318	13,871,832
Equity securities	29,261	25,098
Federal Home Loan Bank stock	17,250	17,250
Other real estate owned, net	12,522	12,674
Affordable housing investments and alternative energy partnerships, net	285,831	282,734
Premises and equipment, net	103,237	103,189
Customers’ liability on acceptances	20,052	22,709
Accrued interest receivable	54,955	51,650
Goodwill	372,189	372,189
Other intangible assets, net	6,874	7,194
Right-of-use assets - operating leases	38,591
Other assets	176,779	175,419
Total assets	17,119,092	16,784,737
Deposits:
Non-interest-bearing demand deposits	2,760,377	2,857,443
Interest-bearing deposits:
NOW deposits	1,269,085	1,365,763
Money market deposits	1,839,468	2,027,404
Savings deposits	710,214	738,656
Time deposits	7,507,220	6,713,074
Total deposits	14,086,364	13,702,340
Advances from Federal Home Loan Banks, Total	420,000	530,000
Other borrowings of affordable housing investments	29,436	17,298
Long-term debt	174,448	189,448
Deferred payments from acquisition	18,663	18,458
Acceptances outstanding	20,052	22,709
Lease liabilities - operating leases	39,534
Other liabilities	167,266	182,618
Total liabilities	14,955,763	14,662,871
Commitments and contingencies
Stockholders’ Equity
Common stock, $0.01 par value, 100,000,000 shares authorized; 89,920,909 issued and 80,362,840 outstanding at March 31, 2019, and 89,826,317 issued and 80,501,948 outstanding at December 31, 2018	899	898
Additional paid-in-capital	942,838	942,062
Accumulated other comprehensive loss, net	(10,431)	(18,006)
Retained earnings	1,520,861	1,479,149
Treasury stock, at cost (9,558,069 shares at March 31, 2019, and 9,324,369 shares at December 31, 2018)	(290,838)	(282,237)
Total equity	2,163,329	2,121,866
Total liabilities and equity	$ 17,119,092	$ 16,784,737