Cathay General Bancorp (CATY) 10-Q 9 May 16 2016 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2016	Apr. 29, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	CATHAY GENERAL BANCORP
Trading Symbol	caty
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		78,844,013
Amendment Flag	false
Entity Central Index Key	861,842
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 192,642	$ 180,130
Short-term investments and interest bearing deposits	432,384	536,880
Securities available-for-sale (amortized cost of $1,476,424 in 2016 and $1,595,723 in 2015)	1,485,124	1,586,352
Loans held for sale		6,676
Loans	10,363,647	10,163,452
Less: Allowance for loan losses	(134,552)	(138,963)
Unamortized deferred loan fees, net	(7,585)	(8,262)
Loans, net	10,221,510	10,016,227
Federal Home Loan Bank stock	17,250	17,250
Other real estate owned, net	27,271	24,701
Affordable housing investments and alternative energy partnerships, net	212,795	182,943
Premises and equipment, net	108,231	108,924
Customers’ liability on acceptances	26,843	40,335
Accrued interest receivable	32,517	30,558
Goodwill	372,189	372,189
Other intangible assets, net	3,497	3,677
Other assets	129,766	147,284
Total assets	13,262,019	13,254,126
Deposits
Non-interest-bearing demand deposits	2,059,073	2,033,048
Interest-bearing deposits:
NOW deposits	992,278	966,404
Money market deposits	1,923,114	1,905,719
Savings deposits	602,154	618,164
Time deposits	4,747,497	4,985,752
Total deposits	10,324,116	10,509,087
Securities sold under agreements to repurchase	400,000	400,000
Advances from the Federal Home Loan Bank	475,000	275,000
Other borrowings for affordable housing investments	17,792	18,593
Long-term debt	119,136	119,136
Acceptances outstanding	26,843	40,335
Other liabilities	164,459	144,197
Total liabilities	$ 11,527,346	$ 11,506,348
Commitments and contingencies
Stockholders’ Equity
Common stock, $0.01 par value, 100,000,000 shares authorized, 87,047,371 issued and 78,836,728 outstanding at March 31, 2016, and 87,002,931 issued and 80,806,116 outstanding at December 31, 2015	$ 870	$ 870
Additional paid-in-capital	882,825	880,822
Accumulated other comprehensive loss, net	(1,073)	(8,426)
Retained earnings	1,091,640	1,059,660
Treasury stock, at cost (8,210,643 shares at March 31, 2016, and 6,196,815 shares at December 31, 2015)	(239,589)	(185,148)
Total equity	1,734,673	1,747,778
Total liabilities and equity	$ 13,262,019	$ 13,254,126

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Securities available-for-sale, amortized cost (in Dollars)	$ 1,476,424	$ 1,595,723
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	87,047,371	87,002,931
Common stock, shares outstanding	78,836,728	80,806,116
Treasury stock, shares	8,210,643	6,196,815

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Interest and Dividend Income
Loans receivable, including loan fees	$ 114,890	$ 100,100
Investment securities	6,859	3,774
Federal Home Loan Bank stock	347	581
Deposits with banks	249	479
Total interest and dividend income	122,345	104,934
Interest Expense
Time deposits	10,857	6,773
Other deposits	3,640	4,793
Securities sold under agreements to repurchase	3,934	3,925
Advances from Federal Home Loan Bank	106	93
Long-term debt	1,440	1,424
Total interest expense	19,977	17,008
Net interest income before reversal for credit losses	102,368	87,926
Reversal for loan losses	(10,500)	(5,000)
Net interest income after reversal for credit losses	112,868	92,926
Non-Interest Income
Securities losses, net	(206)	(21)
Letters of credit commissions	1,281	1,268
Depository service fees	1,323	1,301
Other operating income	5,143	6,001
Total non-interest income	7,541	8,549
Non-Interest Expense
Salaries and employee benefits	26,931	22,616
Occupancy expense	4,369	4,021
Computer and equipment expense	2,580	2,502
Professional services expense	4,368	3,370
Data processing service expense	2,250	1,982
FDIC and State assessments	2,589	2,260
Marketing expense	796	820
Other real estate owned expense	295	483
Amortization of investments in low income housing and alternative energy partnerships	2,794	2,383
Amortization of core deposit intangibles	172	177
Other operating expense	4,427	3,517
Total non-interest expense	51,571	44,131
Income before income tax expense	68,838	57,344
Income tax expense	22,675	21,364
Net income	46,163	35,980
Other comprehensive income, net of tax
Unrealized holding gain on securities available-for-sale	10,354	6,499
Less: reclassification adjustments included in net income	(119)	(12)
Unrealized holding loss on cash flow hedge derivatives	(3,120)	(1,588)
Total other comprehensive gain, net of tax	7,353	4,923
Total comprehensive income	$ 53,516	$ 40,903
Net income per common share:
Basic (in Dollars per share)	$ 0.58	$ 0.45
Diluted (in Dollars per share)	0.57	0.45
Cash dividends paid per common share (in Dollars per share)	$ 0.18	$ 0.10
Average common shares outstanding
Basic (in Shares)	79,734,519	79,835,628
Diluted (in Shares)	80,393,849	80,309,383

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows from Operating Activities
Net income	$ 46,163,000	$ 35,980,000
Adjustments to reconcile net income to net cash provided by/(used in) operating activities:
Credit for loan losses	(10,500,000)	(5,000,000)
Provision for losses on other real estate owned	128,000	181,000
Deferred tax liability	13,315,000	6,840,000
Depreciation and amortization	1,923,000	1,929,000
Net losses on sale and transfer of other real estate owned		154,000
Net gains on sale of loans	(102,000)	(596,000)
Proceeds from sales of loans	3,391,000	10,360,000
Originations of loans held-for-sale	(3,289,000)	(8,791,000)
Amortization on alternative energy partnerships, venture capital and other investments	1,304,000	224,000
Net losses on sales and calls of securities		21,000
Amortization/accretion of security premiums/discounts, net	1,527,000	502,000
Write-down on impaired securities	206,000
Excess tax short-fall from share-based payment arrangements		4,395,000
Stock based compensation and stock issued to officers as compensation	1,578,000	1,570,000
Net change in accrued interest receivable and other assets	(7,328,000)	6,631,000
Net change in other liabilities	(7,207,000)	1,379,000
Net cash provided by operating activities	41,109,000	55,779,000
Cash Flows from Investing Activities
Decrease/(increase) in short-term investments	104,496,000	(129,112,000)
Purchase of investment securities available-for-sale	(25,898,000)	(703,305,000)
Proceeds from sale of investment securities available-for-sale		741,992,000
Proceeds from repayments, maturities and calls of investment securities available-for-sale	143,464,000	12,102,000
Redemptions of Federal Home Loan Bank stock		5,785,000
Net increase in loans	(174,402,000)	(305,651,000)
Purchase of premises and equipment	(1,063,000)	(562,000)
Proceeds from sales of other real estate owned		1,043,000
Investment in affordable housing and alternative energy partnerships	(22,326,000)	(1,351,000)
Net cash provided by/(used in) investing activities	24,271,000	(379,059,000)
Cash Flows from Financing Activities
Net (decrease)/increase in deposits	(184,803,000)	329,724,000
Net decrease in federal funds purchased and securities sold under agreements to repurchase		(50,000,000)
Advances from Federal Home Loan Bank	450,000,000	2,242,000,000
Repayment of Federal Home Loan Bank borrowings	(250,000,000)	(2,182,000,000)
Cash dividends paid	(14,183,000)	(7,983,000)
Purchase of treasury stock	(54,441,000)
Proceeds from shares issued under Dividend Reinvestment Plan	545,000	1,289,000
Proceeds from exercise of stock options	49,000	88,000
Taxes paid related to net share settlement of RSUs	(35,000)	(114,000)
Excess tax short-fall from share-based payment arrangements		(4,395,000)
Net cash provided by/(used in) financing activities	(52,868,000)	328,609,000
Increase in cash and cash equivalents	12,512,000	5,329,000
Cash and cash equivalents, beginning of the period	180,130,000	176,830,000
Cash and cash equivalents, end of the period	192,642,000	182,159,000
Cash paid during the period:
Interest	20,310,000	17,370,000
Income taxes paid	4,789,000	11,884,000
Non-cash investing and financing activities:
Net change in unrealized holding gain on securities available-for-sale, net of tax	10,473,000	6,511,000
Net change in unrealized holding loss on cash flow hedge derivatives	(3,120,000)	(1,588,000)
Transfers to other real estate owned from loans held for investment	2,698,000	$ 701,000
Loans transferred from held for sale to held for investment, net	$ 6,676,000

Note 1 - Business

Note 1 - Business	3 Months Ended
	Mar. 31, 2016
Disclosure Text Block [Abstract]
Nature of Operations [Text Block]	1. Business Cathay General Bancorp (“Bancorp”) is the holding company for Cathay Bank (the “Bank” and, together, the “Company”), six limited partnerships investing in affordable housing investments in which the Bank is the sole limited partner, and GBC Venture Capital, Inc. Bancorp also owns 100% of the common stock of five statutory business trusts created for the purpose of issuing capital securities. The Bank was founded in 1962 and offers a wide range of financial services. As of March 31, 2016, the Bank operated 21 branches in Southern California, 12 branches in Northern California, 12 branches in New York State, three branches in Illinois, three branches in Washington State, two branches in Texas, one branch in Massachusetts, one branch in New Jersey, one branch in Maryland, one branch in Nevada, one branch in Hong Kong, and a representative office in Shanghai and in Taipei. Deposit accounts at the Hong Kong branch are not insured by the Federal Deposit Insurance Corporation (the “FDIC”).

Note 2 - Basis of Presentation

Note 2 - Basis of Presentation	3 Months Ended
	Mar. 31, 2016
Disclosure Text Block [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	2 Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the interim periods presented are not necessarily indicative of the results that may be expected for the year ending December 31, 2016. For further information, refer to the audited consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015. The preparation of the condensed consolidated financial statements in accordance with GAAP requires management of the Company to make a number of estimates and assumptions relating to the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. Actual results could differ from those estimates. The most significant estimates subject to change are the allowance for loan losses, goodwill impairment, and other-than-temporary impairment.

Note 3 - Recent Accounting Pron

Note 3 - Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2016
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	3 Recent Accounting Pronouncements In January 2016, the FASB issued ASU 2016-01, “ Financial Instruments Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities effective for interim and annual periods beginning after December 15, 2017. Adoption of ASU 2016-01 is not expected to have a significant impact on the Company’s consolidated financial statements. In March 2016, the FASB issued ASU 2016-06, “ Derivatives and Hedging ( T opic 8 15 ): Contingent Put and Call Options in Debt Instruments effective for interim and annual periods beginning after December 15, 2016. Adoption of ASU 2016-06 is not expected to have a significant impact on the Company’s consolidated financial statements. In March 2016, the FASB issued ASU 2016-07, “ Investments Equity Method and Joint Ventures ( T opic 323 ): Simplifying the Transition to the Equity Method of Accounting effective for interim and annual periods beginning after December 15, 2016. Adoption of ASU 2016-07 is not expected to have a significant impact on the Company’s consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, “ Compensation Stock Compensation ( T opic 718 ): I m provements to Employee Share-Based Payment Accounting effective for interim and annual periods beginning after December 15, 2016. Adoption of ASU 2016-09 is not expected to have a significant impact on the Company’s consolidated financial statements.

Note 4 - Earnings Per Share

Note 4 - Earnings Per Share	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	4 Earnings per Share Basic earnings per share excludes dilution and is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock and resulted in the issuance of common stock that then shared in earnings. Outstanding stock options with anti-dilutive effect were not included in the computation of diluted earnings per share. The following table sets forth earnings per common share calculations: Three months ended March 31, (Dollars in thousands, except share and per share data) 2016 2015 Net income $ 46,163 $ 35,980 Weighted-average shares: Basic weighted-average number of common shares outstanding 79,734,519 79,835,628 Dilutive effect of weighted-average outstanding common share equivalents Warrants 452,368 344,919 Options 83,018 108,457 Restricted stock units 123,944 20,379 Diluted weighted-average number of common shares outstanding 80,393,849 80,309,383 Average stock options and warrants with anti-dilutive effect 359,544 1,670,231 Earnings per common share: Basic $ 0.58 $ 0.45 Diluted $ 0.57 $ 0.45

Note 5 - Stock-based Compensati

Note 5 - Stock-based Compensation	3 Months Ended
	Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	5 Stock-Based Compensation Under the Company’s equity incentive plans, directors and eligible employees may be granted incentive or non-statutory stock options and/or restricted stock units, or awarded non-vested stock. As of March 31, 2016, the only options granted by the Company were non-statutory stock options to selected Bank officers and non-employee directors at exercise prices equal to the fair market value of a share of the Company’s common stock on the date of grant. Such options have a maximum ten-year term and vest in 20% annual increments (subject to early termination in certain events) except certain options granted to the Chief Executive Officer of the Company in 2005 and 2008. There were no options granted during the first quarter of 2016 or 2015. Option compensation expense was zero for the three months ended March 31, 2016, and March 31, 2015. Stock-based compensation was fully recognized over the requisite service period for all awards. There were 2,110 and 3,750 stock option shares exercised in the first quarter ended March 31, 2016 and 2015, respectively. The Company received $49,000 with an aggregate intrinsic value of $9,000 from the exercise of stock options during the first quarter ended March 31, 2016 compared to $88,000 with an aggregate intrinsic value of $10,000 during the first quarter of March 31, 2015. The table below summarizes stock option activity for the periods indicated: Shares Weighted-average Exercise Price Weighted-average Remaining Contractual Life (in years) Aggregate Intrinsic Value (in thousands) Balance, December 31, 2015 1,031,170 $ 31.27 0.9 $ 3,268 Exercised (2,110 ) 23.37 Forfeited (608,670 ) 36.46 Balance, March 31, 2016 420,390 $ 23.80 1.8 $ 2,026 Exercisable, March 31, 2016 420,390 $ 23.80 1.8 $ 2,026 In addition to stock options, the Company also grants restricted stock units to eligible employees that vest subject to continued employment at the vesting dates. The Company did not grant any restricted stock units in the first quarter of 2016. The Company granted restricted stock units for 37,675 shares at an average closing price for $27.53 per share in 2015 . In December 2013, the Company granted performance share unit awards in which the number of units earned is calculated based on the relative total shareholder return (TSR) of the Company’s common stock as compared to the TSR of the KBW Regional Banking Index. In addition, the Company granted performance share unit awards in which the number of units earned is determined by comparison to the targeted EPS as defined in the award for the 2014 to 2016 period. Performance TSR restricted stock units for 119,840 shares and performance EPS restricted stock units for 116,186 shares were granted to eight executive officers in 2013. In December 2014, the Company granted additional performance TSR restricted stock units for 60,456 shares and performance EPS restricted stock units for 57,642 shares were granted to seven executive officers. In December 2015, the Company granted additional performance TSR restricted stock units for 61,209 shares and performance EPS restricted stock units for 57,409 shares were granted to seven executive officers. Both the performance TSR and performance EPS units awarded are scheduled to vest three years from grant date. The following table presents restricted stock unit activity during the three months ended March 31, 2016: Units Balance at December 31, 2015 542,375 Vested (4,812 ) Balance at March 31, 2016 537,563 The compensation expense recorded for restricted stock units was $1.0 million for the first quarter ended March 31, 2016 , compared to $1.1 million in the same period a year ago. Unrecognized stock-based compensation expense related to restricted stock units was $6.5 million as of March 31, 2016, and is expected to be recognized over the next 2.2 years. As of March 31, 2016, 3,789,782 shares were available under the Company’s 2005 Incentive Plan (as Amended and Restated) for future grants. The following table summarizes the tax benefit (short-fall) from share-based payment arrangements: Three months ended March 31, (Dollars in thousands) 2016 2015 Tax benefit/(short-fall) of tax deductions in excess of grant-date fair value $ (3,298 ) $ (4,395 ) Benefit of tax deductions on grant-date fair value 3,302 4,442 Total benefit of tax deductions $ 4 $ 47 The short-fall amount from share-based payment arrangements was charged against income tax expense. In addition, $140,000 was offset against the additional paid-in capital that resulted from previously realized excess tax benefits.

Note 6 - Investment Securities

Note 6 - Investment Securities	3 Months Ended
	Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	6 Investment Securities Investment securities were $1.49 billion as of March 31, 2016, compared to $1.59 billion as of December 31, 2015. The following tables reflect the amortized cost, gross unrealized gains, gross unrealized losses, and fair value of investment securities as of March 31, 2016, and December 31, 2015: March 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Available-for-Sale U.S. treasury securities $ 224,750 $ 61 $ 7 $ 224,804 U.S. government sponsored entities 100,000 10 - 100,010 Mortgage-backed securities 1,063,944 6,553 4 1,070,493 Collateralized mortgage obligations 60 - 26 34 Corporate debt securities 74,957 413 2,267 73,103 Mutual funds 6,000 - 85 5,915 Preferred stock of government sponsored entities 2,811 478 486 2,803 Other equity securities 3,902 4,060 - 7,962 Total $ 1,476,424 $ 11,575 $ 2,875 $ 1,485,124 December 31, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Available-for-Sale U.S. treasury securities $ 284,678 $ 5 $ 395 $ 284,288 U.S. government sponsored entities 150,000 - 1,840 148,160 Mortgage-backed securities 1,073,108 560 11,399 1,062,269 Collateralized mortgage obligations 63 - 27 36 Corporate debt securities 74,955 425 1,525 73,855 Mutual funds 6,000 - 167 5,833 Preferred stock of government sponsored entities 2,811 633 228 3,216 Other equity securities 4,108 4,929 342 8,695 Total $ 1,595,723 $ 6,552 $ 15,923 $ 1,586,352 The amortized cost and fair value of investment securities as of March 31, 2016, by contractual maturities, are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or repay obligations with or without call or repayment penalties. Securities Available-For-Sale Amortized cost Fair value (In thousands) Due in one year or less $ 154,963 $ 154,978 Due after one year through five years 104,879 105,470 Due after five years through ten years 145,501 143,358 Due after ten years (1) 1,071,081 1,081,318 Total $ 1,476,424 $ 1,485,124 (1) Equity securities are reported in this category There were no sales transactions of mortgage-backed securities during the first quarter of 2016. Proceeds of $406.9 million were received from the sale of mortgage-backed securities during the three months ended March 31, 2015. Proceeds from repayments, maturities and calls of mortgage-backed securities were $33.5 million and $12.1 million for the three months ended March 31, 2016 and 2015, respectively. There were no sales transactions of other investment securities during the three months ended March 31, 2016. Proceeds of $335.1 million were received from the sale of other investment securities during the three months ended March 31, 2015. Proceeds from maturities and calls of other investment securities were $110.0 million during the three months ended March 31, 2016 compared to zero during the same period a year ago. No gains and losses were realized on sales of investment securities but a permanent impairment write-down of $206,000 was recorded during the three months ended March 31, 2016 compared to gains of $1.7 million and losses of $1.7 million realized during the same period a year ago. The tables below show the fair value and unrealized losses of the temporarily impaired securities in our investment securities portfolio as of March 31, 2016, and December 31, 2015: March 31, 2016 Temporarily impaired securities Less than 12 months 12 months or longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (Dollars in thousands) Securities Available-for-Sale U.S. treasury securities $ 29,965 $ 7 $ - $ - $ 29,965 $ 7 Mortgage-backed securities 389 3 46 1 435 4 Collateralized mortgage obligations - - 34 26 34 26 Corporate debt securities 9,950 50 42,783 2,217 52,733 2,267 Mutual funds - - 5,915 85 5,915 85 Preferred stock of government sponsored entities 2,230 486 - - 2,230 486 Total $ 42,534 $ 546 $ 48,778 $ 2,329 $ 91,312 $ 2,875 December 31, 2015 Temporarily impaired securities Less than 12 months 12 months or longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (Dollars in thousands) Securities Available-for-Sale U.S. treasury securities $ 224,289 $ 395 $ - $ - $ 224,289 $ 395 U.S. government sponsored entities 148,160 1,840 - - 148,160 1,840 Mortgage-backed securities 1,025,342 11,398 6 1 1,025,348 11,399 Collateralized mortgage obligations - - 36 27 36 27 Corporate debt securities 9,950 50 43,525 1,475 53,475 1,525 Mutual funds - - 5,833 167 5,833 167 Preferred stock of government sponsored entities 2,488 228 - - 2,488 228 Other equity securities 158 342 - - 158 342 Total $ 1,410,387 $ 14,253 $ 49,400 $ 1,670 $ 1,459,787 $ 15,923 As of March 31, 2016, the Company had unrealized losses of $2.9 million. The unrealized losses on these securities were primarily attributed to yield curve movement, together with the widened liquidity spread and credit spread. The issuers have not, to the Company’s knowledge, established any cause for default on these securities. Management believes the impairment was temporary and, accordingly, no impairment loss on these securities has been recognized in our condensed consolidated statements of operations. The Company expects to recover the amortized cost basis of its debt securities, and has no intent to sell and will not be required to sell available-for-sale debt securities that have declined below their cost before their anticipated recovery. Investment securities having a carrying value of $445.6 million as of March 31, 2016, and $449.6 million as of December 31, 2015, were pledged to secure public deposits, other borrowings, treasury tax and loan, and securities sold under agreements to repurchase.

Note 7 - Loans

Note 7 - Loans	3 Months Ended
	Mar. 31, 2016
Receivables [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	7 . Loans Most of the Company’s business activity is with Asian customers located in Southern and Northern California; New York City, New York; Houston and Dallas, Texas; Seattle, Washington; Boston, Massachusetts; Chicago, Illinois; Edison, New Jersey; Rockville, Maryland; Las Vegas, Nevada, and Hong Kong. The Company has no specific industry concentration, and generally its loans are secured by real property or other collateral of the borrowers. Loans are generally expected to be paid off from the operating profits of the borrowers, from refinancing by other lenders, or through sale by the borrowers of the secured collateral. The types of loans in the condensed consolidated balance sheets as of March 31, 2016, and December 31, 2015, were as follows: March 31, 2016 December 31, 2015 (In thousands) Type of Loans: Commercial loans $ 2,251,187 $ 2,316,863 Residential mortgage loans 2,043,789 1,932,355 Commercial mortgage loans 5,445,575 5,301,218 Real estate construction loans 453,469 441,543 Equity lines 168,283 168,980 Installment and other loans 1,344 2,493 Gross loans $ 10,363,647 $ 10,163,452 Less: Allowance for loan losses (134,552 ) (138,963 ) Unamortized deferred loan fees (7,585 ) (8,262 ) Total loans, net $ 10,221,510 $ 10,016,227 Loans held for sale $ - $ 6,676 As of March 31, 2016, recorded investment in impaired loans totaled $134.8 million and was comprised of non-accrual loans of $44.6 million and accruing troubled debt restructured loans (TDRs) of $90.2 million. As of December 31, 2015, recorded investment in impaired loans totaled $133.8 million and was comprised of non-accrual loans of $52.1 million and accruing TDRs of $81.7 million. For impaired loans, the amounts previously charged off represent 14.2% as of March 31, 2016, and 22.4% as of December 31, 2015, of the contractual balances for impaired loans. The following table presents the average balance and interest income recognized related to impaired loans for the periods indicated: Impaired Loans Average Recorded Investment Interest Income Recognized Three months ended March 31, Three months ended March 31, 2016 2015 2016 2015 Commercial loans $ 12,670 $ 25,426 $ 120 $ 229 Real estate construction loans 20,292 22,990 65 65 Commercial mortgage loans 87,452 110,293 890 917 Residential mortgage loans and equity lines 16,991 17,280 132 124 Total impaired loans $ 137,405 $ 175,989 $ 1,207 $ 1,335 The following table presents impaired loans and the related allowance for loan losses as of the dates indicated: Impaired Loans March 31, 2016 December 31, 2015 Unpaid Principal Balance Recorded Investment Allowance Unpaid Principal Balance Recorded Investment Allowance (In thousands) With no allocated allowance Commercial loans $ 10,912 $ 8,968 $ - $ 15,493 $ 6,721 $ - Real estate construction loans 33,009 11,857 - 51,290 22,002 - Commercial mortgage loans 74,480 67,988 - 59,954 54,625 - Residential mortgage loans and equity lines 4,929 4,784 - 3,233 3,026 - Subtotal $ 123,330 $ 93,597 $ - $ 129,970 $ 86,374 $ - With allocated allowance Commercial loans $ 4,188 $ 2,718 $ 225 $ 7,757 $ 6,847 $ 530 Commercial mortgage loans 27,369 26,157 6,593 28,258 27,152 6,792 Residential mortgage loans and equity lines 13,334 12,343 372 14,383 13,437 427 Subtotal $ 44,891 $ 41,218 $ 7,190 $ 50,398 $ 47,436 $ 7,749 Total impaired loans $ 168,221 $ 134,815 $ 7,190 $ 180,368 $ 133,810 $ 7,749 The following tables present the aging of the loan portfolio by type as of March 31, 2016, and as of December 31, 2015: March 31, 2016 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Non-accrual Loans Total Past Due Loans Not Past Due Total Type of Loans: (In thousands) Commercial loans $ 35,329 $ 7,920 $ - $ 2,645 $ 45,894 $ 2,205,293 $ 2,251,187 Real estate construction loans 1,529 - - 6,179 7,708 445,761 453,469 Commercial mortgage loans 17,136 1,144 - 28,537 46,817 5,398,758 5,445,575 Residential mortgage loans and equity lines 6,087 - - 7,282 13,369 2,198,703 2,212,072 Installment and other loans - - - - - 1,344 1,344 Total loans $ 60,081 $ 9,064 $ - $ 44,643 $ 113,788 $ 10,249,859 $ 10,363,647 December 31, 2015 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Non-accrual Loans Total Past Due Loans Not Past Due Total Type of Loans: (In thousands) Commercial loans $ 8,367 $ 221 $ - $ 3,545 $ 12,133 $ 2,304,730 $ 2,316,863 Real estate construction loans 7,285 - - 16,306 23,591 417,952 441,543 Commercial mortgage loans 2,243 2,223 - 25,231 29,697 5,271,521 5,301,218 Residential mortgage loans and equity lines 4,959 1,038 - 7,048 13,045 2,088,290 2,101,335 Installment and other loans - - - - 2,493 2,493 Total loans $ 22,854 $ 3,482 $ - $ 52,130 $ 78,466 $ 10,084,986 $ 10,163,452 The determination of the amount of the allowance for loan losses for impaired loans is based on management’s current judgment about the credit quality of the loan portfolio and takes into consideration known relevant internal and external factors that affect collectability when determining the appropriate level for the allowance for loan losses. The nature of the process by which the Bank determines the appropriate allowance for loan losses requires the exercise of considerable judgment. This allowance evaluation process is also applied to troubled debt restructurings since they are considered to be impaired loans. A troubled debt restructuring is a formal modification of the terms of a loan when the lender, for economic or legal reasons related to the borrower’s financial difficulties, grants a concession to the borrower. The concessions may be granted in various forms, including a change in the stated interest rate, a reduction in the loan balance or accrued interest, or an extension of the maturity date that causes significant delay in payment. TDRs on accrual status are comprised of the loans that have, pursuant to the Bank’s policy, performed under the restructured terms and have demonstrated sustained performance under the modified terms for six months before being returned to accrual status. The sustained performance considered by management pursuant to its policy includes the periods prior to the modification if the prior performance met or exceeded the modified terms. This would include cash paid by the borrower prior to the restructure to set up interest reserves. As of March 31, 2016, accruing TDRs were $90.2 million and non-accrual TDRs were $23.2 million compared to accruing TDRs of $81.7 million and non-accrual TDRs of $39.9 million as of December 31, 2015. The Company allocated specific reserves of $1.5 million to accruing TDRs and $5.3 million to non-accrual TDRs as of March 31, 2016, and $2.0 million to accruing TDRs and $5.4 million to non-accrual TDRs as of December 31, 2015. There were no TDRs that were modified during the first quarter of 2016. The following table presents TDRs that were modified during the first quarter of 2015, their specific reserve s a s of March 31, 2015, and charge-off s during the first quarter of 2015: Three months ended March 31, 2015 March 31, 2015 No. of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Charge-offs Specific Reserve (Dollars in thousands) Commercial loans 1 $ 850 $ 850 $ - $ - Commercial mortgage loans 3 8,613 8,613 - - Residential mortgage loans and equity lines 4 1,522 1,374 148 46 Total 8 $ 10,985 $ 10,837 $ 148 $ 46 Modifications of the loan terms during the first quarter of 2015 were in the form of changes in the stated interest rate, an extension of maturity dates, and/or a reduction in monthly payment amounts. The length of time for which modifications involving a reduction of the stated interest rate or changes in payment terms that were documented ranged from six months to three years from the modification date. We expect that the TDRs on accruing status as of March 31, 2016, which were all performing in accordance with their restructured terms, will continue to comply with the restructured terms because of the reduced principal or interest payments on these loans. A summary of TDRs by type of concession and by type of loan, as of March 31, 2016, and December 31, 2015, is shown below: March 31, 2016 Accruing TDRs Payment Deferral Rate Reduction Rate Reduction and Payment Deferral Total (In thousands) Commercial loans $ 7,446 $ - $ 1,595 $ 9,041 Real estate construction loans - - 5,679 5,679 Commercial mortgage loans 26,393 6,025 33,189 65,607 Residential mortgage loans 5,154 996 3,695 9,845 Total accruing TDRs $ 38,993 $ 7,021 $ 44,158 $ 90,172 March 31, 2016 Non-accrual TDRs Payment Deferral Rate Reduction and Payment Deferral Total (In thousands) Commercial loans $ 1,001 $ 90 $ 1,091 Commercial mortgage loans 1,532 20,028 21,560 Residential mortgage loans 381 177 558 Total non-accrual TDRs $ 2,914 $ 20,295 $ 23,209 December 31, 2015 Accruing TDRs Payment Deferral Rate Reduction Rate Reduction and Payment D eferral Total Commercial loans $ 8,298 $ - $ 1,726 $ 10,024 Real estate construction loans - - 5,696 5,696 Commercial mortgage loans 16,701 6,045 33,800 56,546 Residential mortgage loans 5,201 999 3,214 9,414 Total accruing TDRs $ 30,200 $ 7,044 $ 44,436 $ 81,680 December 31, 2015 Non-accrual TDRs Payment Deferral Rate Reduction and Payment Deferral Total (In thousands) Commercial loans $ 1,033 $ 90 $ 1,123 Real estate construction loans 9,981 5,825 15,806 Commercial mortgage loans 1,544 20,362 21,906 Residential mortgage loans 388 700 1,088 Total non-accrual TDRs $ 12,946 $ 26,977 $ 39,923 The activity within our TDRs for the periods indicated are shown below: Three months ended March 31, Accruing TDRs 2016 2015 (In thousands) Beginning balance $ 81,680 $ 104,356 New restructurings - 10,628 Restructured loans restored to accrual status 10,303 - Charge-offs - (148 ) Payments (1,811 ) (4,254 ) Restructured loans placed on non-accrual status - (10,189 ) Ending balance $ 90,172 $ 100,393 Three months ended March 31, Non-accrual TDRs 2016 2015 (In thousands) Beginning balance $ 39,923 $ 41,618 New restructurings - 209 Restructured loans placed on non-accrual status - 10,189 Charge-offs - (2,754 ) Payments (6,411 ) (4,721 ) Restructured loans restored to accrual status (10,303 ) - Ending balance $ 23,209 $ 44,541 A loan is considered to be in payment default once it is 60 to 90 days contractually past due under the modified terms. The Company did not have any loans that were modified as a TDR during the previous twelve months and which subsequently defaulted as of March 31, 2016. Under the Company’s internal underwriting policy, an evaluation is performed of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification in order to determine whether a borrower is experiencing financial difficulty. As of March 31, 2016, there were no commitments to lend additional funds to those borrowers whose loans had been restructured, were considered impaired, or were on non-accrual status. As part of the on-going monitoring of the credit quality of our loan portfolio, the Company utilizes a risk grading matrix to assign a risk grade to each loan. The risk rating categories can be generally described by the following grouping for non-homogeneous loans: ● Pass/Watch – ● Special Mention – ● Substandard – ● Doubtful – ● Loss – The Company had no loans held for sale as of March 31, 2016. The following tables present the loan portfolio by risk rating as of March 31, 2016, and as of December 31, 2015: March 31, 2016 Pass/Watch Special Mention Substandard Doubtful Total (In thousands) Commercial loans $ 2,081,780 $ 92,891 $ 75,461 $ 1,055 $ 2,251,187 Real estate construction loans 436,415 5,197 11,357 500 453,469 Commercial mortgage loans 5,131,844 187,237 117,324 9,170 5,445,575 Residential mortgage loans and equity lines 2,200,400 1,931 9,741 - 2,212,072 Installment and other loans 1,344 - - - 1,344 Total gross loans $ 9,851,783 $ 287,256 $ 213,883 $ 10,725 $ 10,363,647 December 31, 2015 Pass/Watch Special Mention Substandard Doubtful Total (In thousands) Commercial loans $ 2,143,270 $ 110,338 $ 61,297 $ 1,958 $ 2,316,863 Real estate construction loans 413,765 5,776 21,502 500 441,543 Commercial mortgage loans 5,018,199 155,553 118,196 9,270 5,301,218 Residential mortgage loans and equity lines 2,091,434 399 9,502 - 2,101,335 Installment and other loans 2,493 - - - 2,493 Total gross loans $ 9,669,161 $ 272,066 $ 210,497 $ 11,728 $ 10,163,452 Loans held for sale $ 732 $ - $ 5,944 $ - $ 6,676 The allowance for loan losses and the reserve for off-balance sheet credit commitments are significant estimates that can and do change based on management’s process in analyzing the loan portfolio and on management’s assumptions about specific borrowers, underlying collateral, and applicable economic and environmental conditions, among other factors. The following table presents the balance in the allowance for loan losses by portfolio segment and based on impairment method as of March 31, 2016, and as of December 31, 2015: Commercial Loans Real Estate Construction Loans Commercial Mortgage Loans Residential Mortgage Loans and Equity Lines Installment and Other Loans Total (In thousands) March 31, 2016 Loans individually evaluated for impairment Allowance $ 225 $ - $ 6,593 $ 372 $ - $ 7,190 Balance $ 11,686 $ 11,857 $ 94,145 $ 17,127 $ - $ 134,815 Loans collectively evaluated for impairment Allowance $ 56,156 $ 12,744 $ 43,858 $ 14,597 $ 7 $ 127,362 Balance $ 2,239,501 $ 441,612 $ 5,351,430 $ 2,194,945 $ 1,344 $ 10,228,832 Total allowance $ 56,381 $ 12,744 $ 50,451 $ 14,969 $ 7 $ 134,552 Total balance $ 2,251,187 $ 453,469 $ 5,445,575 $ 2,212,072 $ 1,344 $ 10,363,647 December 31, 2015 Loans individually evaluated for impairment Allowance $ 530 $ - $ 6,792 $ 427 $ - $ 7,749 Balance $ 13,568 $ 22,002 $ 81,776 $ 16,464 $ - $ 133,810 Loans collectively evaluated for impairment Allowance $ 55,669 $ 22,170 $ 42,648 $ 10,718 $ 9 $ 131,214 Balance $ 2,303,295 $ 419,541 $ 5,219,442 $ 2,084,871 $ 2,493 $ 10,029,642 Total allowance $ 56,199 $ 22,170 $ 49,440 $ 11,145 $ 9 $ 138,963 Total balance $ 2,316,863 $ 441,543 $ 5,301,218 $ 2,101,335 $ 2,493 $ 10,163,452 The following tables detail activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2016, and March 31, 2015. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. Commercial Loans Real Estate Construction Loans Commercial Mortgage Loans Residential Mortgage Loans and Equity Lines Installment and Other Loans Total (In thousands) 2016 Beginning Balance $ 56,199 $ 22,170 $ 49,440 $ 11,145 $ 9 $ 138,963 Provision/(credit) for possible credit losses 1,265 (16,702 ) 978 3,961 (2 ) (10,500 ) Charge-offs (2,070 ) - (110 ) (149 ) - (2,329 ) Recoveries 987 7,276 143 12 8,418 Net (charge-offs)/recoveries (1,083 ) 7,276 33 (137 ) - 6,089 March 31, 2016 Ending Balance $ 56,381 $ 12,744 $ 50,451 $ 14,969 $ 7 $ 134,552 Reserve for impaired loans $ 225 $ - $ 6,593 $ 372 $ - $ 7,190 Reserve for non-impaired loans $ 56,156 $ 12,744 $ 43,858 $ 14,597 $ 7 $ 127,362 Reserve for off-balance sheet credit commitments $ 2,641 $ - $ 53 $ - $ - $ 2,694 2015 Beginning Balance $ 47,501 $ 27,652 $ 74,673 $ 11,578 $ 16 $ 161,420 Provision/(credit) for possible credit losses 793 (4,427 ) (1,697 ) 328 3 (5,000 ) Charge-offs (864 ) - (3,452 ) (148 ) - (4,464 ) Recoveries 2,275 45 1,794 19 - 4,133 Net (charge-offs)/recoveries 1,411 45 (1,658 ) (129 ) - (331 ) March 31, 2015 Ending Balance $ 49,705 $ 23,270 $ 71,318 $ 11,777 $ 19 $ 156,089 Reserve for impaired loans $ 3,911 $ - $ 6,635 $ 498 $ - $ 11,044 Reserve for non-impaired loans $ 45,794 $ 23,270 $ 64,683 $ 11,279 $ 19 $ 145,045 Reserve for off-balance sheet credit commitments $ 903 $ 527 $ 181 $ 40 $ 1 $ 1,652

Note 8 - Commitments and Contin

Note 8 - Commitments and Contingencies	3 Months Ended
	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	8. Commitments and Contingencies The Company is involved in various litigation concerning transactions entered into in the normal course of business. Management, after consultation with legal counsel, does not believe that the resolution of such litigation will have a material effect upon its consolidated financial condition, results of operations, or liquidity taken as a whole. Although the Company establishes accruals for legal proceedings when information related to the loss contingencies represented by those matters indicates both that a loss is probable and that the amount of loss can be reasonably estimated, the Company does not have accruals for all legal proceedings where there is a risk of loss. In addition, amounts accrued may not represent the ultimate loss to the Company from the legal proceedings in question. Thus, ultimate losses may be higher or lower, and possibly significantly so, than the amounts accrued for legal loss contingencies. In the normal course of business, the Company becomes a party to financial instruments with off-balance sheet risk to meet the financing needs of its customers. These financial instruments include commitments to extend credit in the form of loans, or through commercial or standby letters of credit and financial guarantees. These instruments represent varying degrees of exposure to risk in excess of the amounts included in the accompanying condensed consolidated balance sheets. The contractual or notional amount of these instruments indicates a level of activity associated with a particular class of financial instrument and is not a reflection of the level of expected losses, if any.

Note 9 - Borrowed Funds

Note 9 - Borrowed Funds	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	9. Borrowed Funds Securities Sold Under Agreements to Repurchase. These transactions are accounted for as collateralized financing transactions and recorded at the amounts at which the securities were sold. The Company may have to provide additional collateral for the repurchase agreements, as necessary. The underlying collateral pledged for the repurchase agreements consists of U.S. Treasury securities and mortgage-backed securities with a fair value of $429 million as of March 31, 2016, and $430 million as of December 31, 2015. Borrowing from the FHLB.

Note 10 - Income Taxes

Note 10 - Income Taxes	3 Months Ended
	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	10. Income Taxes Income tax expense totaled $22.7 million, or an effective tax rate of 32.9%, for the three months ended March 31, 2016, compared to an income tax expense of $21.4 million, or an effective tax rate of 37.3%, for the same period in 2015. The effective tax rate includes the impact of the utilization of low income housing tax credits and the utilization of alternative energy tax credits. As of December 31, 2015, the Company had income tax refunds receivable of $28.9 million. These income tax receivables are included in other assets in the accompanying condensed consolidated balance sheets. The Company’s tax returns are open for audit by the Internal Revenue Service back to 2012 and by the California Franchise Tax Board back to 2008. As the Company is presently under audit by a number of tax authorities, it is reasonably possible that unrecognized tax benefits could change significantly over the next twelve months. The Company does not expect that any such changes would have a material impact on its annual effective tax rate.

Note 11 - Fair Value Measuremen

Note 11 - Fair Value Measurements	3 Months Ended
	Mar. 31, 2016
Disclosure Text Block [Abstract]
Fair Value, Measurement Inputs, Disclosure [Text Block]	1 1 . Fair Value Measurements The Company adopted ASC Topic 820 on January 1, 2008, and determined the fair values of our financial instruments based on the following: ● Level 1 - Quoted prices in active markets for identical assets or liabilities. ● Level 2 - Observable prices in active markets for similar assets or liabilities; prices for identical or similar assets or liabilities in markets that are not active; directly observable market inputs for substantially the full term of the asset and liability; market inputs that are not directly observable but are derived from or corroborated by observable market data. ● Level 3 – Unobservable inputs based on the Company’s own judgment about the assumptions that a market participant would use. The Company uses the following methodologies to measure the fair value of its financial assets and liabilities on a recurring basis: Securities Available for Sale Warrants Foreign Exchange Contracts Interest Rate Swaps The valuation techniques for the assets and liabilities valued on a nonrecurring basis are as follows: Impaired Loans. Goodwill. — Commercial Lending and Retail Banking. The Company then completes “step one” of the impairment test by comparing the fair value of each reporting unit (as determined based on the discussion below) with the recorded book value (or “carrying amount”) of its net assets, with goodwill included in the computation of the carrying amount. If the fair value of a reporting unit exceeds its carrying amount, goodwill of that reporting unit is not considered impaired, and “step two” of the impairment test is not necessary. If the carrying amount of a reporting unit exceeds its fair value, step two of the impairment test is performed to determine the amount of impairment. Step two of the impairment test compares the carrying amount of the reporting unit’s goodwill to the “implied fair value” of that goodwill. The implied fair value of goodwill is computed by assuming that all assets and liabilities of the reporting unit would be adjusted to the current fair value, with the offset as an adjustment to goodwill. This adjusted goodwill balance is the implied fair value used in step two. An impairment charge is recognized for the amount by which the carrying amount of goodwill exceeds its implied fair value. In connection with the determination of fair value, certain data and information is utilized, including earnings forecasts at the reporting unit level for the next four years. Other key assumptions include terminal values based on future growth rates and discount rates for valuing the cash flows, which have inputs for the risk-free rate, market risk premium, and adjustments to reflect inherent risk and required market returns. Because of the significance of unobservable inputs in the valuation of goodwill impairment, goodwill subject to nonrecurring fair value adjustments is classified as a Level 3 measurement. Core Deposit Intangibles. Other Real Estate Owned. Investments in Venture Capital. Equity Investments The following tables present the Company’s hierarchy for its assets and liabilities measured at fair value on a recurring basis as of March 31, 2016, and December 31, 2015: March 31, 2016 Fair Value Measurements Using Total at Level 1 Level 2 Level 3 Fair Value (In thousands) Assets Securities available-for-sale U.S. Treasury securities $ 224,804 $ - $ - $ 224,804 U.S. government sponsored entities 100,010 - 100,010 Mortgage-backed securities - 1,070,493 - 1,070,493 Collateralized mortgage obligations - 34 - 34 Corporate debt securities - 73,103 - 73,103 Mutual funds 5,915 - - 5,915 Preferred stock of government sponsored entities - 2,803 - 2,803 Other equity securities - 7,962 - 7,962 Total securities available-for-sale 230,719 1,254,405 - 1,485,124 Warrants - - 94 94 Foreign exchange contracts - 3,313 - 3,313 Total assets $ 230,719 $ 1,257,718 $ 94 $ 1,488,531 Liabilities Interest rate swaps $ - $ 14,878 $ - $ 14,878 Foreign exchange contracts - 913 - 913 Total liabilities $ - $ 15,791 $ - $ 15,791 December 31, 2015 Fair Value Measurements Using Total at Level 1 Level 2 Level 3 Fair Value (In thousands) Assets Securities available-for-sale U.S. Treasury securities $ 284,288 $ - $ - $ 284,288 U.S. government sponsored entities - 148,160 - $ 148,160 Mortgage-backed securities - 1,062,269 - 1,062,269 Collateralized mortgage obligations - 36 - 36 Corporate debt securities - 73,855 - 73,855 Mutual funds 5,833 - - 5,833 Preferred stock of government sponsored entities - 3,216 - 3,216 Other equity securities - 8,695 - 8,695 Total securities available-for-sale 290,121 1,296,231 - 1,586,352 Warrants - - 62 62 Foreign exchange contracts - 3,339 - 3,339 Total assets $ 290,121 $ 1,299,570 $ 62 $ 1,589,753 Liabilities Option contracts $ - $ 28 $ - $ 28 Interest rate swaps - 6,496 - $ 6,496 Foreign exchange contracts - 4,124 - 4,124 Total liabilities $ - $ 10,648 $ - $ 10,648 The Company measured the fair value of its warrants on a recurring basis using significant unobservable inputs. The fair value of warrants was $94,000 as of March 31, 2016, compared to $62,000 as of December 31, 2015. The fair value adjustment of warrants was included in other operating income in the first quarter of 2016. The significant unobservable inputs in the Black-Scholes option pricing model for the fair value of warrants are their expected life ranging from 1 to 7 years, risk-free interest rate from 0.79% to 1.60%, and stock volatility from 13.06% to 18.21%. For financial assets measured at fair value on a nonrecurring basis that were still reflected in the condensed consolidated balance sheets as of March 31, 2016, the following tables provide the level of valuation assumptions used to determine each adjustment, the carrying value of the related individual assets as of March 31, 2016, and December 31, 2015, and the total losses for the periods indicated: March 31, 2016 Total Losses Fair Value Measurements Using Total at Three Months Ended Level 1 Level 2 Level 3 Fair Value March 31, 2016 March 31, 2015 (In thousands) Assets Impaired loans by type: Commercial loans $ - $ - $ 2,493 $ 2,493 $ - $ - Commercial mortgage loans - - 19,565 19,565 - 56 Residential mortgage loans and equity lines - - 11,971 11,971 - 148 Total impaired loans - - 34,029 34,029 - 204 Other real estate owned (1) - 11,906 4,206 16,112 128 181 Investments in venture capital and private company stock - - 4,831 4,831 110 224 Total assets $ - $ 11,906 $ 43,066 $ 54,972 $ 238 $ 609 (1) Other real estate owned balance of $27.3 million in the condensed consolidated balance sheet is net of estimated disposal costs. December 31, 2015 Total Losses Fair Value Measurements Using Total at Twelve Months Ended Level 1 Level 2 Level 3 Fair Value December 31, 2015 December 31, 2014 (In thousands) Assets Impaired loans by type: Commercial loans $ - $ - $ 6,317 $ 6,317 $ 806 $ 17 Commercial mortgage loans - - 20,359 20,359 598 3,914 Residential mortgage loans and equity lines - - 13,009 13,009 146 27 Total impaired loans - - 39,685 39,685 1,550 3,958 Other real estate owned (1) - 10,047 4,235 14,282 404 202 Investments in venture capital and private company stock - - 4,922 4,922 553 436 Total assets $ - $ 10,047 $ 48,842 $ 58,889 $ 2,507 $ 4,596 (1) Other real estate owned balance of $24.7 million in the consolidated balance sheet is net of estimated disposal costs. The significant unobservable (Level 3) inputs used in the fair value measurement of collateral for collateral-dependent impaired loans was primarily based on the appraised value of collateral adjusted by estimated sales cost and commissions. The Company generally obtains new appraisal reports every nine months. As the Company’s primary objective in the event of default would be to monetize the collateral to settle the outstanding balance of the loan, less marketable collateral would receive a larger discount. During the reported periods, collateral discounts ranged from 55% in the case of accounts receivable collateral to 65% in the case of inventory collateral. The significant unobservable inputs used in the fair value measurement of loans held for sale was primarily based on the quoted price or sale price adjusted by estimated sales cost and commissions. The significant unobservable inputs used in the fair value measurement of other real estate owned (“OREO”) was primarily based on the appraised value of OREO adjusted by estimated sales cost and commissions. The Company applies estimated sales cost and commissions ranging from 3% to 6% to collateral value of impaired loans, quoted price, or loan sale price of loans held for sale, and appraised value of OREO.

Note 12 - Fair Value of Financi

Note 12 - Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	1 2 . Fair Value of Financial Instruments The following methods and assumptions were used to estimate the fair value of each class of financial instruments. Cash and Cash Equivalents. Short-term Investments. Securities Purchased under Agreements to Resell. Securities. Loans Held for Sale Loans. The fair value of performing loans was calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect the credit and interest rate risk inherent in the loan, a Level 3 measurement. The fair value of impaired loans was calculated based on the net realizable fair value of the collateral or the observable market price of the most recent sale or quoted price from loans held for sale. The Company does not record loans at fair value on a recurring basis. Nonrecurring fair value adjustments to collateral dependent impaired loans are recorded based on the current appraised value or adjusted appraised value of the collateral, a Level 2 or Level 3 measurement. Deposit Liabilities. Securities Sold under Agreements to Repurchase. Advances from Federal Home Loan Bank . Other Borrowings. Long-term Debt. Foreign Exchange Contracts Interest Rate Swaps Off-Balance-Sheet Financial Instruments. Fair value was estimated in accordance with ASC Topic 825. Fair value estimates were made at specific points in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Bank’s entire holdings of a particular financial instrument. Because no market exists for a significant portion of the Bank’s financial instruments, fair value estimates were based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates were subjective in nature and involved uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. The following table presents the carrying and notional amounts and estimated fair value of financial instruments as of March 31, 2016, and as of December 31, 2015: March 31, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value (In thousands) Financial Assets Cash and due from banks $ 192,642 $ 192,642 $ 180,130 $ 180,130 Short-term investments 432,384 432,384 536,880 536,880 Securities available-for-sale 1,485,124 1,485,124 1,586,352 1,586,352 Loans held for sale - - 6,676 6,676 Loans, net 10,221,510 10,142,747 10,016,227 9,938,810 Investment in Federal Home Loan Bank stock 17,250 17,250 17,250 17,250 Warrants 94 94 62 62 Notional Amount Fair Value Notional Amount Fair Value Foreign exchange contracts $ 138,201 $ 3,314 $ 100,602 $ 3,339 Carrying Amount Fair Value Carrying Amount Fair Value Financial Liabilities Deposits $ 10,324,116 $ 10,331,030 $ 10,509,087 $ 10,509,879 Securities sold under agreements to repurchase 400,000 413,195 400,000 413,417 Advances from Federal Home Loan Bank 475,000 475,128 275,000 274,488 Other borrowings 17,792 15,478 18,593 16,684 Long-term debt 119,136 58,951 119,136 58,420 Notional Amount Fair Value Notional Amount Fair Value Option contracts $ - $ - $ 9,396 $ 28 Foreign exchange contracts 73,006 913 115,418 4,124 Interest rate swaps 476,590 14,878 459,416 6,496 Notional Amount Fair Value Notional Amount Fair Value Off-Balance Sheet Financial Instruments Commitments to extend credit $ 2,098,360 $ (5,722 ) $ 1,971,848 $ (5,570 ) Standby letters of credit 49,334 (199 ) 49,081 (194 ) Other letters of credit 30,883 (18 ) 38,131 (22 ) Bill of lading guarantees 52 - 454 (1 ) The following tables present the level in the fair value hierarchy for the estimated fair values of financial instruments as of March 31, 2016, and December 31, 2015. March 31, 2016 Estimated Fair Value Measurements Level 1 Level 2 Level 3 (In thousands) Financial Assets Cash and due from banks $ 192,642 $ 192,642 $ - $ - Short-term investments 432,384 432,384 - - Securities available-for-sale 1,485,124 230,719 1,254,405 - Loans, net 10,142,747 - - 10,142,747 Investment in Federal Home Loan Bank stock 17,250 - 17,250 - Warrants 94 - - 94 Financial Liabilities Deposits 10,331,030 - - 10,331,030 Securities sold under agreements to repurchase 413,195 - 413,195 - Advances from Federal Home Loan Bank 475,128 - 475,128 - Other borrowings 15,478 - - 15,478 Long-term debt 58,951 - 58,951 - December 31, 2015 Estimated Fair Value Measurements Level 1 Level 2 Level 3 (In thousands) Financial Assets Cash and due from banks $ 180,130 $ 180,130 $ - $ - Short-term investments 536,880 536,880 - - Securities available-for-sale 1,586,352 290,121 1,296,231 - Loans held-for-sale 6,676 - - 6,676 Loans, net 9,938,810 - - 9,938,810 Investment in Federal Home Loan Bank stock 17,250 - 17,250 - Warrants 62 - - 62 Financial Liabilities Deposits 10,509,879 - - 10,509,879 Securities sold under agreements to repurchase 413,417 - 413,417 - Advances from Federal Home Loan Bank 274,488 - - 274,488 Other borrowings 16,684 - - 16,684 Long-term debt 58,420 - 58,420 -

Note 13 - Goodwill and Goodwill

Note 13 - Goodwill and Goodwill Impairment	3 Months Ended
	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	1 3 . Goodwill and Goodwill Impairment The Company’s policy is to assess goodwill for impairment at the reporting unit level on an annual basis or between annual assessments if a triggering event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Impairment is the condition that exists when the carrying amount of goodwill exceeds its implied fair value. The Company first assesses qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test described in ASC Topic 350. The two-step impairment testing process, if needed, begins by assigning net assets and goodwill to our two reporting units — Commercial Lending and Retail Banking. The Company then completes “step one” of the impairment test by comparing the fair value of each reporting unit (as determined based on the discussion below) with the recorded book value (or “carrying amount”) of its net assets, with goodwill included in the computation of the carrying amount. If the fair value of a reporting unit exceeds its carrying amount, goodwill of that reporting unit is not considered impaired, and “step two” of the impairment test is not necessary. If the carrying amount of a reporting unit exceeds its fair value, step two of the impairment test is performed to determine the amount of impairment. Step two of the impairment test compares the carrying amount of the reporting unit’s goodwill to the “implied fair value” of that goodwill. The implied fair value of goodwill is computed by assuming that all assets and liabilities of the reporting unit would be adjusted to the current fair value, with the offset as an adjustment to goodwill. This adjusted goodwill balance is the implied fair value used in step two. An impairment charge is recognized for the amount by which the carrying amount of goodwill exceeds its implied fair value. As of March 31, 2016, the Company’s market capitalization was above book value and there was no triggering event that required the Company to assess goodwill for impairment as of an interim date.

Note 14 - Financial Derivatives

Note 14 - Financial Derivatives	3 Months Ended
	Mar. 31, 2016
Derivative Instrument Detail [Abstract]
Schedule of Derivative Instruments [Table Text Block]	1 4 . Financial Derivatives It is the policy of the Company not to speculate on the future direction of interest rates. However, the Company enters into financial derivatives in order to seek mitigation of exposure to interest rate risks related to our interest-earning assets and interest-bearing liabilities. We believe that these transactions, when properly structured and managed, may provide a hedge against inherent interest rate risk in the Company’s assets or liabilities and against risk in specific transactions. In such instances, the Company may enter into interest rate swap contracts or other types of financial derivatives. Prior to considering any hedging activities, we seek to analyze the costs and benefits of the hedge in comparison to other viable alternative strategies. All hedges must be approved by the Bank’s Investment Committee. The Company follows ASC Topic 815 that establishes accounting and reporting standards for financial derivatives, including certain financial derivatives embedded in other contracts, and hedging activities. It requires the recognition of all financial derivatives as assets or liabilities in the Company’s consolidated balance sheet and measurement of those financial derivatives at fair value. The accounting treatment of changes in fair value is dependent upon whether or not a financial derivative is designated as a hedge and, if so, the type of hedge. Fair value is determined using third-party models with observable market data. For derivatives designated as cash flow hedges, changes in fair value are recognized in other comprehensive income and are reclassified to earnings when the hedged transaction is reflected in earnings. For derivatives designated as fair value hedges, changes in the fair value of the derivatives are reflected in current earnings, together with changes in the fair value of the related hedged item if there is a highly effective correlation between changes in the fair value of the interest rate swaps and changes in the fair value of the underlying asset or liability that is intended to be hedged. If there is not a highly effective correlation between changes in the fair value of the interest rate swap and changes in the fair value of the underlying asset or liability that is intended to be hedged, then only the changes in the fair value of the interest rate swaps are reflected in the Company’s consolidated financial statements. In May 2014, Bancorp entered into interest rate swap contracts in the notional amount of $119.1 million for a period of ten years. The objective of these interest rate swap contracts, which were designated as hedging instruments in cash flow hedges, was to hedge on Bancorp’s $119.1 million of Junior Subordinated Debentures that had been issued to five trusts, with the quarterly interest payments throughout the ten-year period beginning in June 2014 and ending in June 2024, from the risk of variability of these payments resulting from changes in the three-month LIBOR interest rate. Bancorp pays a weighted average fixed interest rate of 2.61% and receives a variable interest rate of the three-month LIBOR at a weighted average rate of 0.63%. As of March 31, 2016, the notional amount of cash flow interest rate swaps was $119.1 million and their unrealized loss of $6.1 million, net of taxes, was included in other comprehensive income. The amount of periodic net settlement of interest rate swaps included in interest expense was $620,000 for the three months ended March 31, 2016 compared to $703,000 for the same quarter a year ago. As of March 31, 2016, the Bank entered into interest rate swap contracts with various terms from four to eight years. These interest rate swap contracts are matched to individual fixed-rate commercial real estate loans in the Bank’s loan portfolio. These contracts have been designated as hedging instruments to hedge the risk of changes in the fair value of the underlying commercial real estate loan due to changes in interest rates. The swap contracts are structured so that the notional amounts reduce over time to match the contractual amortization of the underlying loan and allow prepayments with the same pre-payment penalty amounts as the related loan. The Bank pays a weighted average fixed rate of 4.68% and receives a variable rate at the one month LIBOR rate plus a weighted average spread of 321 basis points, or at a weighted average rate of 3.64%. As of March 31, 2016, the notional amount of fair value interest rate swaps was $357.5 million and their unrealized loss of $4.3 million was included in other non-interest income. The amount of periodic net settlement of interest rate swaps reducing interest income was $934,000 for the three months ended March 31, 2016, compared to $683,000 for the same quarter a year ago. As of March 31, 2016, the ineffective portion of these interest rate swaps was not significant. Interest rate swap contracts involve the risk of dealing with institutional derivative counterparties and their ability to meet contractual terms. Institutional counterparties must have a strong credit profile and be approved by the Company’s Board of Directors. The Company’s credit exposure on interest rate swaps is limited to the net favorable value and interest payments of all swaps by each counterparty. Credit exposure may be reduced by the amount of collateral pledged by the counterparty. Bancorp’s interest rate swaps have been assigned by the counterparties to a derivatives clearing organization and daily margin is indirectly maintained with the derivatives clearing organization. Cash posted as collateral by Bancorp related to derivative contracts totaled $13.3 million as of March 31, 2016. The Company enters into foreign exchange forward contracts with various counterparties to mitigate the risk of fluctuations in foreign currency exchange rates for foreign exchange certificates of deposit or foreign exchange contracts entered into with our clients. These contracts are not designated as hedging instruments and are recorded at fair value in our condensed consolidated balance sheets. Changes in the fair value of these contracts as well as the related foreign exchange certificates of deposit and foreign exchange contracts are recognized immediately in net income as a component of non-interest income. Period end gross positive fair values are recorded in other assets and gross negative fair values are recorded in other liabilities. As of March 31, 2016, there were no option contracts outstanding. As of March 31, 2016, spot, forward, and swap contracts with a total notional amount of $138.2 million had a positive fair value of $3.3 million. Spot, forward, and swap contracts with a total notional amount of $73.0 million had a negative fair value of $913,000 as of March 31, 2016. As of December 31, 2015, the notional amount of option contracts totaled $9.4 million with a net negative fair value of $28,000. As of December 31, 2015, spot, forward, and swap contracts with a total notional amount of $100.6 million had a positive fair value of $3.3 million. Spot, forward, and swap contracts with a total notional amount of $115.4 million had a negative fair value of $4.1 million as of December 31, 2015.

Note 15 - Balance Sheet Offsett

Note 15 - Balance Sheet Offsetting	3 Months Ended
	Mar. 31, 2016
Disclosure Text Block Supplement [Abstract]
Supplemental Balance Sheet Disclosures [Text Block]	1 5 . Balance Sheet Offsetting Certain financial instruments, including resell and repurchase agreements, securities lending arrangements and derivatives, may be eligible for offset in the condensed consolidated balance sheets and/or subject to master netting arrangements or similar agreements. The Company’s securities sold with agreements to repurchase and derivative transactions with upstream financial institution counterparties are generally executed under International Swaps and Derivative Association master agreements which include “right of set-off” provisions. In such cases there is generally a legally enforceable right to offset recognized amounts and there may be an intention to settle such amounts on a net basis. Nonetheless, the Company does not generally offset such financial instruments for financial reporting purposes. Financial instruments that are eligible for offset in the condensed consolidated balance sheets, as of March 31, 2016, and December 31, 2015, are presented in the following table: Gross Amounts Not Offset in the Balance Sheet Gross Amounts Recognized Gross Amounts Offset in the Balance Sheet Net Amounts Presented in the Balance Sheet Financial Instruments Collateral Posted Net Amount (In thousands) March 31, 2016 Liabilities: Securities sold under agreements to repurchase $ 400,000 $ - $ 400,000 $ - $ (400,000 ) $ - Derivatives $ 14,878 $ - $ 14,878 $ - $ (14,878 ) $ - December 31, 2015 Liabilities: Securities sold under agreements to repurchase $ 400,000 $ - $ 400,000 $ - $ (400,000 ) $ - Derivatives $ 6,496 $ - $ 6,496 $ - $ (6,496 ) $ -

Note 16 - Stockholders' Equity

Note 16 - Stockholders' Equity	3 Months Ended
	Mar. 31, 2016
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	1 6 . Stockholders’ Equity Total equity was $1.73 billion as of March 31, 2016, a decrease of $13.1 million, from $1.75 billion as of December 31, 2015, primarily due to purchases of treasury stock of $54.4 million and common stock cash dividends of $14.2 million offset by increases in net income of $46.2 million and other comprehensive income of $7.4 million. Activity in accumulated other comprehensive income, net of tax, and reclassification out of accumulated other comprehensive income for the three months ended March 31, 2016, and March 31, 2015, was as follows: Three months ended March 31, 2016 Three months ended March 31, 2015 Pre-tax Tax expense/ (benefit) Net-of-tax Pre-tax Tax expense/ (benefit) Net-of-tax (In thousands) Beginning balance, loss, net of tax Securities available-for-sale $ (5,431 ) $ (3,172 ) Cash flow hedge derivatives (2,995 ) (2,397 ) Total $ (8,426 ) $ (5,569 ) Net unrealized gains/(losses) arising during the period Securities available-for-sale $ 17,863 $ 7,509 $ 10,354 $ 11,213 $ 4,714 $ 6,499 Cash flow hedge derivatives (5,383 ) (2,263 ) (3,120 ) (2,740 ) (1,152 ) (1,588 ) Total 12,480 5,246 7,234 8,473 3,562 $ 4,911 Reclassification adjustment for net losses in net income Securities available-for-sale 206 87 119 21 9 12 Cash flow hedge derivatives - - - - - - Total 206 87 119 21 9 12 Total other comprehensive income/(loss) Securities available-for-sale 18,069 7,596 10,473 11,234 4,723 6,511 Cash flow hedge derivatives (5,383 ) (2,263 ) (3,120 ) (2,740 ) (1,152 ) (1,588 ) Total $ 12,686 $ 5,333 $ 7,353 $ 8,494 $ 3,571 $ 4,923 Ending balance, gain/(loss), net of tax Securities available-for-sale $ 5,042 $ 3,339 Cash flow hedge derivatives (6,115 ) (3,985 ) Total $ (1,073 ) $ (646 )

Note 17 - Stock Repurchase Prog

Note 17 - Stock Repurchase Program	3 Months Ended
	Mar. 31, 2016
Disclosure Text Block Supplement [Abstract]
Treasury Stock [Text Block]	17. Stock Repurchase Program In February 2016, the Company completed the repurchase of the remaining 633,250 shares of its common stock under the August 2015 repurchase program, for $17.0 million, or a $26.82 average price per share. On February 1, 2016, the Board of Directors of the Company adopted a new stock repurchase program to repurchase up to $45.0 million of the Company’s common stock. In February 2016, the Company repurchased 1,380,578 shares of its common stock for $37.5 million, or a $27.13 average price per share under the February 2016 repurchase program. As of March 31, 2016, there was $7.5 million of the Company’s common stock remaining that could be purchased in the future under the February 2016 repurchase program.

Note 4 - Earnings Per Share (Ta

Note 4 - Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three months ended March 31, (Dollars in thousands, except share and per share data) 2016 2015 Net income $ 46,163 $ 35,980 Weighted-average shares: Basic weighted-average number of common shares outstanding 79,734,519 79,835,628 Dilutive effect of weighted-average outstanding common share equivalents Warrants 452,368 344,919 Options 83,018 108,457 Restricted stock units 123,944 20,379 Diluted weighted-average number of common shares outstanding 80,393,849 80,309,383 Average stock options and warrants with anti-dilutive effect 359,544 1,670,231 Earnings per common share: Basic $ 0.58 $ 0.45 Diluted $ 0.57 $ 0.45

Note 5 - Stock-based Compensa24

Note 5 - Stock-based Compensation (Tables)	3 Months Ended
	Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	Shares Weighted-average Exercise Price Weighted-average Remaining Contractual Life (in years) Aggregate Intrinsic Value (in thousands) Balance, December 31, 2015 1,031,170 $ 31.27 0.9 $ 3,268 Exercised (2,110 ) 23.37 Forfeited (608,670 ) 36.46 Balance, March 31, 2016 420,390 $ 23.80 1.8 $ 2,026 Exercisable, March 31, 2016 420,390 $ 23.80 1.8 $ 2,026
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	Units Balance at December 31, 2015 542,375 Vested (4,812 ) Balance at March 31, 2016 537,563
Schedule of Tax Benefit (Short-fall) from Share-based Payment Arrangements [Table Text Block]	Three months ended March 31, (Dollars in thousands) 2016 2015 Tax benefit/(short-fall) of tax deductions in excess of grant-date fair value $ (3,298 ) $ (4,395 ) Benefit of tax deductions on grant-date fair value 3,302 4,442 Total benefit of tax deductions $ 4 $ 47

Note 6 - Investment Securities

Note 6 - Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]	March 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Available-for-Sale U.S. treasury securities $ 224,750 $ 61 $ 7 $ 224,804 U.S. government sponsored entities 100,000 10 - 100,010 Mortgage-backed securities 1,063,944 6,553 4 1,070,493 Collateralized mortgage obligations 60 - 26 34 Corporate debt securities 74,957 413 2,267 73,103 Mutual funds 6,000 - 85 5,915 Preferred stock of government sponsored entities 2,811 478 486 2,803 Other equity securities 3,902 4,060 - 7,962 Total $ 1,476,424 $ 11,575 $ 2,875 $ 1,485,124 December 31, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Available-for-Sale U.S. treasury securities $ 284,678 $ 5 $ 395 $ 284,288 U.S. government sponsored entities 150,000 - 1,840 148,160 Mortgage-backed securities 1,073,108 560 11,399 1,062,269 Collateralized mortgage obligations 63 - 27 36 Corporate debt securities 74,955 425 1,525 73,855 Mutual funds 6,000 - 167 5,833 Preferred stock of government sponsored entities 2,811 633 228 3,216 Other equity securities 4,108 4,929 342 8,695 Total $ 1,595,723 $ 6,552 $ 15,923 $ 1,586,352
Investments Classified by Contractual Maturity Date [Table Text Block]	Securities Available-For-Sale Amortized cost Fair value (In thousands) Due in one year or less $ 154,963 $ 154,978 Due after one year through five years 104,879 105,470 Due after five years through ten years 145,501 143,358 Due after ten years (1) 1,071,081 1,081,318 Total $ 1,476,424 $ 1,485,124
Schedule of Unrealized Loss on Investments [Table Text Block]	March 31, 2016 Temporarily impaired securities Less than 12 months 12 months or longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (Dollars in thousands) Securities Available-for-Sale U.S. treasury securities $ 29,965 $ 7 $ - $ - $ 29,965 $ 7 Mortgage-backed securities 389 3 46 1 435 4 Collateralized mortgage obligations - - 34 26 34 26 Corporate debt securities 9,950 50 42,783 2,217 52,733 2,267 Mutual funds - - 5,915 85 5,915 85 Preferred stock of government sponsored entities 2,230 486 - - 2,230 486 Total $ 42,534 $ 546 $ 48,778 $ 2,329 $ 91,312 $ 2,875 December 31, 2015 Temporarily impaired securities Less than 12 months 12 months or longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (Dollars in thousands) Securities Available-for-Sale U.S. treasury securities $ 224,289 $ 395 $ - $ - $ 224,289 $ 395 U.S. government sponsored entities 148,160 1,840 - - 148,160 1,840 Mortgage-backed securities 1,025,342 11,398 6 1 1,025,348 11,399 Collateralized mortgage obligations - - 36 27 36 27 Corporate debt securities 9,950 50 43,525 1,475 53,475 1,525 Mutual funds - - 5,833 167 5,833 167 Preferred stock of government sponsored entities 2,488 228 - - 2,488 228 Other equity securities 158 342 - - 158 342 Total $ 1,410,387 $ 14,253 $ 49,400 $ 1,670 $ 1,459,787 $ 15,923

Note 7 - Loans (Tables)

Note 7 - Loans (Tables)	3 Months Ended
	Mar. 31, 2016
Note 7 - Loans (Tables) [Line Items]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	March 31, 2016 December 31, 2015 (In thousands) Type of Loans: Commercial loans $ 2,251,187 $ 2,316,863 Residential mortgage loans 2,043,789 1,932,355 Commercial mortgage loans 5,445,575 5,301,218 Real estate construction loans 453,469 441,543 Equity lines 168,283 168,980 Installment and other loans 1,344 2,493 Gross loans $ 10,363,647 $ 10,163,452 Less: Allowance for loan losses (134,552 ) (138,963 ) Unamortized deferred loan fees (7,585 ) (8,262 ) Total loans, net $ 10,221,510 $ 10,016,227 Loans held for sale $ - $ 6,676
Impaired Financing Receivables [Table Text Block]	Impaired Loans Average Recorded Investment Interest Income Recognized Three months ended March 31, Three months ended March 31, 2016 2015 2016 2015 Commercial loans $ 12,670 $ 25,426 $ 120 $ 229 Real estate construction loans 20,292 22,990 65 65 Commercial mortgage loans 87,452 110,293 890 917 Residential mortgage loans and equity lines 16,991 17,280 132 124 Total impaired loans $ 137,405 $ 175,989 $ 1,207 $ 1,335
Schedule of Impaired Loans and Related Allowance and Charge-off [Table Text Block]	Impaired Loans March 31, 2016 December 31, 2015 Unpaid Principal Balance Recorded Investment Allowance Unpaid Principal Balance Recorded Investment Allowance (In thousands) With no allocated allowance Commercial loans $ 10,912 $ 8,968 $ - $ 15,493 $ 6,721 $ - Real estate construction loans 33,009 11,857 - 51,290 22,002 - Commercial mortgage loans 74,480 67,988 - 59,954 54,625 - Residential mortgage loans and equity lines 4,929 4,784 - 3,233 3,026 - Subtotal $ 123,330 $ 93,597 $ - $ 129,970 $ 86,374 $ - With allocated allowance Commercial loans $ 4,188 $ 2,718 $ 225 $ 7,757 $ 6,847 $ 530 Commercial mortgage loans 27,369 26,157 6,593 28,258 27,152 6,792 Residential mortgage loans and equity lines 13,334 12,343 372 14,383 13,437 427 Subtotal $ 44,891 $ 41,218 $ 7,190 $ 50,398 $ 47,436 $ 7,749 Total impaired loans $ 168,221 $ 134,815 $ 7,190 $ 180,368 $ 133,810 $ 7,749
Past Due Financing Receivables [Table Text Block]	March 31, 2016 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Non-accrual Loans Total Past Due Loans Not Past Due Total Type of Loans: (In thousands) Commercial loans $ 35,329 $ 7,920 $ - $ 2,645 $ 45,894 $ 2,205,293 $ 2,251,187 Real estate construction loans 1,529 - - 6,179 7,708 445,761 453,469 Commercial mortgage loans 17,136 1,144 - 28,537 46,817 5,398,758 5,445,575 Residential mortgage loans and equity lines 6,087 - - 7,282 13,369 2,198,703 2,212,072 Installment and other loans - - - - - 1,344 1,344 Total loans $ 60,081 $ 9,064 $ - $ 44,643 $ 113,788 $ 10,249,859 $ 10,363,647 December 31, 2015 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Non-accrual Loans Total Past Due Loans Not Past Due Total Type of Loans: (In thousands) Commercial loans $ 8,367 $ 221 $ - $ 3,545 $ 12,133 $ 2,304,730 $ 2,316,863 Real estate construction loans 7,285 - - 16,306 23,591 417,952 441,543 Commercial mortgage loans 2,243 2,223 - 25,231 29,697 5,271,521 5,301,218 Residential mortgage loans and equity lines 4,959 1,038 - 7,048 13,045 2,088,290 2,101,335 Installment and other loans - - - - 2,493 2,493 Total loans $ 22,854 $ 3,482 $ - $ 52,130 $ 78,466 $ 10,084,986 $ 10,163,452
Schedule of Troubled Debt Restructurings [Table Text Block]	Three months ended March 31, 2015 March 31, 2015 No. of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Charge-offs Specific Reserve (Dollars in thousands) Commercial loans 1 $ 850 $ 850 $ - $ - Commercial mortgage loans 3 8,613 8,613 - - Residential mortgage loans and equity lines 4 1,522 1,374 148 46 Total 8 $ 10,985 $ 10,837 $ 148 $ 46
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	March 31, 2016 Accruing TDRs Payment Deferral Rate Reduction Rate Reduction and Payment Deferral Total (In thousands) Commercial loans $ 7,446 $ - $ 1,595 $ 9,041 Real estate construction loans - - 5,679 5,679 Commercial mortgage loans 26,393 6,025 33,189 65,607 Residential mortgage loans 5,154 996 3,695 9,845 Total accruing TDRs $ 38,993 $ 7,021 $ 44,158 $ 90,172 December 31, 2015 Accruing TDRs Payment Deferral Rate Reduction Rate Reduction and Payment D eferral Total Commercial loans $ 8,298 $ - $ 1,726 $ 10,024 Real estate construction loans - - 5,696 5,696 Commercial mortgage loans 16,701 6,045 33,800 56,546 Residential mortgage loans 5,201 999 3,214 9,414 Total accruing TDRs $ 30,200 $ 7,044 $ 44,436 $ 81,680
Non Accrual Troubled Debt Restructurings [Table Text Block]	March 31, 2016 Non-accrual TDRs Payment Deferral Rate Reduction and Payment Deferral Total (In thousands) Commercial loans $ 1,001 $ 90 $ 1,091 Commercial mortgage loans 1,532 20,028 21,560 Residential mortgage loans 381 177 558 Total non-accrual TDRs $ 2,914 $ 20,295 $ 23,209 December 31, 2015 Non-accrual TDRs Payment Deferral Rate Reduction and Payment Deferral Total (In thousands) Commercial loans $ 1,033 $ 90 $ 1,123 Real estate construction loans 9,981 5,825 15,806 Commercial mortgage loans 1,544 20,362 21,906 Residential mortgage loans 388 700 1,088 Total non-accrual TDRs $ 12,946 $ 26,977 $ 39,923
Activity Within the Troubled Debt Resturings [Table Text Block]	Three months ended March 31, Accruing TDRs 2016 2015 (In thousands) Beginning balance $ 81,680 $ 104,356 New restructurings - 10,628 Restructured loans restored to accrual status 10,303 - Charge-offs - (148 ) Payments (1,811 ) (4,254 ) Restructured loans placed on non-accrual status - (10,189 ) Ending balance $ 90,172 $ 100,393 Three months ended March 31, Non-accrual TDRs 2016 2015 (In thousands) Beginning balance $ 39,923 $ 41,618 New restructurings - 209 Restructured loans placed on non-accrual status - 10,189 Charge-offs - (2,754 ) Payments (6,411 ) (4,721 ) Restructured loans restored to accrual status (10,303 ) - Ending balance $ 23,209 $ 44,541
Financing Receivable Credit Quality Indicators [Table Text Block]	March 31, 2016 Pass/Watch Special Mention Substandard Doubtful Total (In thousands) Commercial loans $ 2,081,780 $ 92,891 $ 75,461 $ 1,055 $ 2,251,187 Real estate construction loans 436,415 5,197 11,357 500 453,469 Commercial mortgage loans 5,131,844 187,237 117,324 9,170 5,445,575 Residential mortgage loans and equity lines 2,200,400 1,931 9,741 - 2,212,072 Installment and other loans 1,344 - - - 1,344 Total gross loans $ 9,851,783 $ 287,256 $ 213,883 $ 10,725 $ 10,363,647 December 31, 2015 Pass/Watch Special Mention Substandard Doubtful Total (In thousands) Commercial loans $ 2,143,270 $ 110,338 $ 61,297 $ 1,958 $ 2,316,863 Real estate construction loans 413,765 5,776 21,502 500 441,543 Commercial mortgage loans 5,018,199 155,553 118,196 9,270 5,301,218 Residential mortgage loans and equity lines 2,091,434 399 9,502 - 2,101,335 Installment and other loans 2,493 - - - 2,493 Total gross loans $ 9,669,161 $ 272,066 $ 210,497 $ 11,728 $ 10,163,452 Loans held for sale $ 732 $ - $ 5,944 $ - $ 6,676
Allowance for Credit Losses on Financing Receivables [Table Text Block]	Commercial Loans Real Estate Construction Loans Commercial Mortgage Loans Residential Mortgage Loans and Equity Lines Installment and Other Loans Total (In thousands) 2016 Beginning Balance $ 56,199 $ 22,170 $ 49,440 $ 11,145 $ 9 $ 138,963 Provision/(credit) for possible credit losses 1,265 (16,702 ) 978 3,961 (2 ) (10,500 ) Charge-offs (2,070 ) - (110 ) (149 ) - (2,329 ) Recoveries 987 7,276 143 12 8,418 Net (charge-offs)/recoveries (1,083 ) 7,276 33 (137 ) - 6,089 March 31, 2016 Ending Balance $ 56,381 $ 12,744 $ 50,451 $ 14,969 $ 7 $ 134,552 Reserve for impaired loans $ 225 $ - $ 6,593 $ 372 $ - $ 7,190 Reserve for non-impaired loans $ 56,156 $ 12,744 $ 43,858 $ 14,597 $ 7 $ 127,362 Reserve for off-balance sheet credit commitments $ 2,641 $ - $ 53 $ - $ - $ 2,694 2015 Beginning Balance $ 47,501 $ 27,652 $ 74,673 $ 11,578 $ 16 $ 161,420 Provision/(credit) for possible credit losses 793 (4,427 ) (1,697 ) 328 3 (5,000 ) Charge-offs (864 ) - (3,452 ) (148 ) - (4,464 ) Recoveries 2,275 45 1,794 19 - 4,133 Net (charge-offs)/recoveries 1,411 45 (1,658 ) (129 ) - (331 ) March 31, 2015 Ending Balance $ 49,705 $ 23,270 $ 71,318 $ 11,777 $ 19 $ 156,089 Reserve for impaired loans $ 3,911 $ - $ 6,635 $ 498 $ - $ 11,044 Reserve for non-impaired loans $ 45,794 $ 23,270 $ 64,683 $ 11,279 $ 19 $ 145,045 Reserve for off-balance sheet credit commitments $ 903 $ 527 $ 181 $ 40 $ 1 $ 1,652
Impairment Method [Member]
Note 7 - Loans (Tables) [Line Items]
Impaired Financing Receivables [Table Text Block]	Commercial Loans Real Estate Construction Loans Commercial Mortgage Loans Residential Mortgage Loans and Equity Lines Installment and Other Loans Total (In thousands) March 31, 2016 Loans individually evaluated for impairment Allowance $ 225 $ - $ 6,593 $ 372 $ - $ 7,190 Balance $ 11,686 $ 11,857 $ 94,145 $ 17,127 $ - $ 134,815 Loans collectively evaluated for impairment Allowance $ 56,156 $ 12,744 $ 43,858 $ 14,597 $ 7 $ 127,362 Balance $ 2,239,501 $ 441,612 $ 5,351,430 $ 2,194,945 $ 1,344 $ 10,228,832 Total allowance $ 56,381 $ 12,744 $ 50,451 $ 14,969 $ 7 $ 134,552 Total balance $ 2,251,187 $ 453,469 $ 5,445,575 $ 2,212,072 $ 1,344 $ 10,363,647 December 31, 2015 Loans individually evaluated for impairment Allowance $ 530 $ - $ 6,792 $ 427 $ - $ 7,749 Balance $ 13,568 $ 22,002 $ 81,776 $ 16,464 $ - $ 133,810 Loans collectively evaluated for impairment Allowance $ 55,669 $ 22,170 $ 42,648 $ 10,718 $ 9 $ 131,214 Balance $ 2,303,295 $ 419,541 $ 5,219,442 $ 2,084,871 $ 2,493 $ 10,029,642 Total allowance $ 56,199 $ 22,170 $ 49,440 $ 11,145 $ 9 $ 138,963 Total balance $ 2,316,863 $ 441,543 $ 5,301,218 $ 2,101,335 $ 2,493 $ 10,163,452

Note 11 - Fair Value Measurem27

Note 11 - Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2016
Disclosure Text Block [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	March 31, 2016 Fair Value Measurements Using Total at Level 1 Level 2 Level 3 Fair Value (In thousands) Assets Securities available-for-sale U.S. Treasury securities $ 224,804 $ - $ - $ 224,804 U.S. government sponsored entities 100,010 - 100,010 Mortgage-backed securities - 1,070,493 - 1,070,493 Collateralized mortgage obligations - 34 - 34 Corporate debt securities - 73,103 - 73,103 Mutual funds 5,915 - - 5,915 Preferred stock of government sponsored entities - 2,803 - 2,803 Other equity securities - 7,962 - 7,962 Total securities available-for-sale 230,719 1,254,405 - 1,485,124 Warrants - - 94 94 Foreign exchange contracts - 3,313 - 3,313 Total assets $ 230,719 $ 1,257,718 $ 94 $ 1,488,531 Liabilities Interest rate swaps $ - $ 14,878 $ - $ 14,878 Foreign exchange contracts - 913 - 913 Total liabilities $ - $ 15,791 $ - $ 15,791 December 31, 2015 Fair Value Measurements Using Total at Level 1 Level 2 Level 3 Fair Value (In thousands) Assets Securities available-for-sale U.S. Treasury securities $ 284,288 $ - $ - $ 284,288 U.S. government sponsored entities - 148,160 - $ 148,160 Mortgage-backed securities - 1,062,269 - 1,062,269 Collateralized mortgage obligations - 36 - 36 Corporate debt securities - 73,855 - 73,855 Mutual funds 5,833 - - 5,833 Preferred stock of government sponsored entities - 3,216 - 3,216 Other equity securities - 8,695 - 8,695 Total securities available-for-sale 290,121 1,296,231 - 1,586,352 Warrants - - 62 62 Foreign exchange contracts - 3,339 - 3,339 Total assets $ 290,121 $ 1,299,570 $ 62 $ 1,589,753 Liabilities Option contracts $ - $ 28 $ - $ 28 Interest rate swaps - 6,496 - $ 6,496 Foreign exchange contracts - 4,124 - 4,124 Total liabilities $ - $ 10,648 $ - $ 10,648
Fair Value Measurements, Nonrecurring [Table Text Block]	March 31, 2016 Total Losses Fair Value Measurements Using Total at Three Months Ended Level 1 Level 2 Level 3 Fair Value March 31, 2016 March 31, 2015 (In thousands) Assets Impaired loans by type: Commercial loans $ - $ - $ 2,493 $ 2,493 $ - $ - Commercial mortgage loans - - 19,565 19,565 - 56 Residential mortgage loans and equity lines - - 11,971 11,971 - 148 Total impaired loans - - 34,029 34,029 - 204 Other real estate owned (1) - 11,906 4,206 16,112 128 181 Investments in venture capital and private company stock - - 4,831 4,831 110 224 Total assets $ - $ 11,906 $ 43,066 $ 54,972 $ 238 $ 609 December 31, 2015 Total Losses Fair Value Measurements Using Total at Twelve Months Ended Level 1 Level 2 Level 3 Fair Value December 31, 2015 December 31, 2014 (In thousands) Assets Impaired loans by type: Commercial loans $ - $ - $ 6,317 $ 6,317 $ 806 $ 17 Commercial mortgage loans - - 20,359 20,359 598 3,914 Residential mortgage loans and equity lines - - 13,009 13,009 146 27 Total impaired loans - - 39,685 39,685 1,550 3,958 Other real estate owned (1) - 10,047 4,235 14,282 404 202 Investments in venture capital and private company stock - - 4,922 4,922 553 436 Total assets $ - $ 10,047 $ 48,842 $ 58,889 $ 2,507 $ 4,596

Note 12 - Fair Value of Finan28

Note 12 - Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping [Table Text Block]	March 31, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value (In thousands) Financial Assets Cash and due from banks $ 192,642 $ 192,642 $ 180,130 $ 180,130 Short-term investments 432,384 432,384 536,880 536,880 Securities available-for-sale 1,485,124 1,485,124 1,586,352 1,586,352 Loans held for sale - - 6,676 6,676 Loans, net 10,221,510 10,142,747 10,016,227 9,938,810 Investment in Federal Home Loan Bank stock 17,250 17,250 17,250 17,250 Warrants 94 94 62 62 Notional Amount Fair Value Notional Amount Fair Value Foreign exchange contracts $ 138,201 $ 3,314 $ 100,602 $ 3,339 Carrying Amount Fair Value Carrying Amount Fair Value Financial Liabilities Deposits $ 10,324,116 $ 10,331,030 $ 10,509,087 $ 10,509,879 Securities sold under agreements to repurchase 400,000 413,195 400,000 413,417 Advances from Federal Home Loan Bank 475,000 475,128 275,000 274,488 Other borrowings 17,792 15,478 18,593 16,684 Long-term debt 119,136 58,951 119,136 58,420 Notional Amount Fair Value Notional Amount Fair Value Option contracts $ - $ - $ 9,396 $ 28 Foreign exchange contracts 73,006 913 115,418 4,124 Interest rate swaps 476,590 14,878 459,416 6,496 Notional Amount Fair Value Notional Amount Fair Value Off-Balance Sheet Financial Instruments Commitments to extend credit $ 2,098,360 $ (5,722 ) $ 1,971,848 $ (5,570 ) Standby letters of credit 49,334 (199 ) 49,081 (194 ) Other letters of credit 30,883 (18 ) 38,131 (22 ) Bill of lading guarantees 52 - 454 (1 )
Schedule of Fair Value of Financial Instruments [Table Text Block]	March 31, 2016 Estimated Fair Value Measurements Level 1 Level 2 Level 3 (In thousands) Financial Assets Cash and due from banks $ 192,642 $ 192,642 $ - $ - Short-term investments 432,384 432,384 - - Securities available-for-sale 1,485,124 230,719 1,254,405 - Loans, net 10,142,747 - - 10,142,747 Investment in Federal Home Loan Bank stock 17,250 - 17,250 - Warrants 94 - - 94 Financial Liabilities Deposits 10,331,030 - - 10,331,030 Securities sold under agreements to repurchase 413,195 - 413,195 - Advances from Federal Home Loan Bank 475,128 - 475,128 - Other borrowings 15,478 - - 15,478 Long-term debt 58,951 - 58,951 - December 31, 2015 Estimated Fair Value Measurements Level 1 Level 2 Level 3 (In thousands) Financial Assets Cash and due from banks $ 180,130 $ 180,130 $ - $ - Short-term investments 536,880 536,880 - - Securities available-for-sale 1,586,352 290,121 1,296,231 - Loans held-for-sale 6,676 - - 6,676 Loans, net 9,938,810 - - 9,938,810 Investment in Federal Home Loan Bank stock 17,250 - 17,250 - Warrants 62 - - 62 Financial Liabilities Deposits 10,509,879 - - 10,509,879 Securities sold under agreements to repurchase 413,417 - 413,417 - Advances from Federal Home Loan Bank 274,488 - - 274,488 Other borrowings 16,684 - - 16,684 Long-term debt 58,420 - 58,420 -

Note 15 - Balance Sheet Offse29

Note 15 - Balance Sheet Offsetting (Tables)	3 Months Ended
	Mar. 31, 2016
Disclosure Text Block Supplement [Abstract]
Schedule of Amounts Recognized in Balance Sheet [Table Text Block]	Gross Amounts Not Offset in the Balance Sheet Gross Amounts Recognized Gross Amounts Offset in the Balance Sheet Net Amounts Presented in the Balance Sheet Financial Instruments Collateral Posted Net Amount (In thousands) March 31, 2016 Liabilities: Securities sold under agreements to repurchase $ 400,000 $ - $ 400,000 $ - $ (400,000 ) $ - Derivatives $ 14,878 $ - $ 14,878 $ - $ (14,878 ) $ - December 31, 2015 Liabilities: Securities sold under agreements to repurchase $ 400,000 $ - $ 400,000 $ - $ (400,000 ) $ - Derivatives $ 6,496 $ - $ 6,496 $ - $ (6,496 ) $ -

Note 16 - Stockholders' Equity

Note 16 - Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2016
Stockholders' Equity Note [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Three months ended March 31, 2016 Three months ended March 31, 2015 Pre-tax Tax expense/ (benefit) Net-of-tax Pre-tax Tax expense/ (benefit) Net-of-tax (In thousands) Beginning balance, loss, net of tax Securities available-for-sale $ (5,431 ) $ (3,172 ) Cash flow hedge derivatives (2,995 ) (2,397 ) Total $ (8,426 ) $ (5,569 ) Net unrealized gains/(losses) arising during the period Securities available-for-sale $ 17,863 $ 7,509 $ 10,354 $ 11,213 $ 4,714 $ 6,499 Cash flow hedge derivatives (5,383 ) (2,263 ) (3,120 ) (2,740 ) (1,152 ) (1,588 ) Total 12,480 5,246 7,234 8,473 3,562 $ 4,911 Reclassification adjustment for net losses in net income Securities available-for-sale 206 87 119 21 9 12 Cash flow hedge derivatives - - - - - - Total 206 87 119 21 9 12 Total other comprehensive income/(loss) Securities available-for-sale 18,069 7,596 10,473 11,234 4,723 6,511 Cash flow hedge derivatives (5,383 ) (2,263 ) (3,120 ) (2,740 ) (1,152 ) (1,588 ) Total $ 12,686 $ 5,333 $ 7,353 $ 8,494 $ 3,571 $ 4,923 Ending balance, gain/(loss), net of tax Securities available-for-sale $ 5,042 $ 3,339 Cash flow hedge derivatives (6,115 ) (3,985 ) Total $ (1,073 ) $ (646 )

Note 1 - Business (Details)

Note 1 - Business (Details)	Mar. 31, 2016
Note 1 - Business (Details) [Line Items]
Number of Limited Partnerships in Housing Investments	6
Percentage of Subsidiaries Common Securities Owned by Parent Company	100.00%
Number of Business Trust	5
Southern California [Member]
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	21
Northern California Member
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	12
NEW YORK
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	12
ILLINOIS
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	3
WASHINGTON
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	3
TEXAS
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	2
MASSACHUSETTS
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	1
NEW JERSEY
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	1
MARYLAND
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	1
NEVADA
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	1
HONG KONG
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	1

Note 4 - Earnings Per Share (De

Note 4 - Earnings Per Share (Details) - Earnings Per Share - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Note 4 - Earnings Per Share (Details) - Earnings Per Share [Line Items]
Net income (in Dollars)	$ 46,163	$ 35,980
Weighted-average shares:
Basic weighted-average number of common shares outstanding	79,734,519	79,835,628
Dilutive effect of weighted-average outstanding common share equivalents
Diluted weighted-average number of common shares outstanding	80,393,849	80,309,383
Average stock options and warrants with anti-dilutive effect	359,544	1,670,231
Earnings per common share:
Basic (in Dollars per share)	$ 0.58	$ 0.45
Diluted (in Dollars per share)	$ 0.57	$ 0.45
Warrant [Member]
Dilutive effect of weighted-average outstanding common share equivalents
Dilutive effect of weighted-average outstanding common share equivalents	452,368	344,919
Employee Stock Option [Member]
Dilutive effect of weighted-average outstanding common share equivalents
Dilutive effect of weighted-average outstanding common share equivalents	83,018	108,457
Restricted Stock Units (RSUs) [Member]
Dilutive effect of weighted-average outstanding common share equivalents
Dilutive effect of weighted-average outstanding common share equivalents	123,944	20,379

Note 5 - Stock-based Compensa33

Note 5 - Stock-based Compensation (Details)	1 Months Ended		3 Months Ended		12 Months Ended
	Dec. 31, 2015shares	Dec. 31, 2014shares	Mar. 31, 2016USD ($)shares	Mar. 31, 2015USD ($)shares	Dec. 31, 2015$ / sharesshares	Dec. 31, 2013shares
Note 5 - Stock-based Compensation (Details) [Line Items]
Maximum Period of Common Stock Granted			10 years
Annual Increments to Be Vested in Common Stock Units			20.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares			0	0
Allocated Share-based Compensation Expense (in Dollars)			$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | shares			2,110	3,750
Proceeds from Stock Options Exercised (in Dollars)			$ 49,000	$ 88,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars)			9,000	10,000
Benefit (Shortfall) of Tax Deductions from Share-based Compensation (in Dollars)			(3,298,000)	(4,395,000)
Additional Paid-in Capital [Member]
Note 5 - Stock-based Compensation (Details) [Line Items]
Benefit (Shortfall) of Tax Deductions from Share-based Compensation (in Dollars)			$ 140,000
2005 Incentive Plan [Member]
Note 5 - Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | shares			3,789,782
Restricted Stock Units (RSUs) [Member]
Note 5 - Stock-based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense (in Dollars)			$ 1,000,000	$ 1,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares			0		37,675
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) | $ / shares					$ 27.53
Number of Officers Receiving Award	7	7				8
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)			$ 6,500,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			2 years 73 days
Performance TSR Restricted Stock [Member]
Note 5 - Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares	61,209	60,456				119,840
Performance EPS Restricted Stock Units [Member]
Note 5 - Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares	57,409	57,642				116,186

Note 5 - Stock-based Compensa34

Note 5 - Stock-based Compensation (Details) - Stock Options - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Stock Options [Abstract]
Balance - shares	420,390		1,031,170
Balance - weighted-average exercise price	$ 23.80		$ 31.27
Balance - weighted-average remaining contractual life	1 year 292 days		328 days
Balance - aggregate intrinisc value	$ 2,026		$ 3,268
Exercised	(2,110)	(3,750)
Exercised	$ 23.37
Forfeited	(608,670)
Forfeited	$ 36.46
Exercisable, March 31, 2016	420,390
Exercisable, March 31, 2016	$ 23.80
Exercisable, March 31, 2016	1 year 292 days
Exercisable, March 31, 2016	$ 2,026

Note 5 - Stock-based Compensa35

Note 5 - Stock-based Compensation (Details) - Restricted Stock Units - Restricted Stock [Member]	3 Months Ended
	Mar. 31, 2016shares
Note 5 - Stock-based Compensation (Details) - Restricted Stock Units [Line Items]
Balance at December 31, 2015	542,375
Balance at March 31, 2016	537,563
Vested	(4,812)

Note 5 - Stock-based Compensa36

Note 5 - Stock-based Compensation (Details) - Tax Short-fall from Share-based Payment Arrangements - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Tax Short-fall from Share-based Payment Arrangements [Abstract]
Tax benefit/(short-fall) of tax deductions in excess of grant-date fair value	$ (3,298)	$ (4,395)
Benefit of tax deductions on grant-date fair value	3,302	4,442
Total benefit of tax deductions	$ 4	$ 47

Note 6 - Investment Securitie37

Note 6 - Investment Securities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities	$ 1,485,124,000		$ 1,586,352,000
Proceeds from Sale of Mortgage Backed Securities (MBS) categorized as Available-for-sale	0	$ 406,900,000
Proceeds from Maturities, Prepayments and Calls of Mortgage Backed Securities (MBS)	33,500,000	12,100,000
Proceeds from Sales and Repayments of Other Investment Securities	0	335,100,000
Proceeds from Maturities Repayments and Calls of Other Investment Securities	110,000,000	0
Realized Loss from Sale and Call of Other Investment Securities	0	1,700,000
Realized Gain from Sale and Call of Other Investment Securities	0	$ 1,700,000
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	206,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	2,875,000		15,923,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	0
Pledged Investment Securities	$ 445,600,000		$ 449,600,000

Note 6 - Investment Securitie38

Note 6 - Investment Securities (Details) - Investment Securities - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Securities Available-for-Sale
Securities available-for-sale, amortized cost	$ 1,476,424	$ 1,595,723
Securities available-for-sale, gross unrealized gains	11,575	6,552
Securities available-for-sale, gross unrealized losses	2,875	15,923
Securities available-for-sale	1,485,124	1,586,352
US Treasury Securities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	224,750	284,678
Securities available-for-sale, gross unrealized gains	61	5
Securities available-for-sale, gross unrealized losses	7	395
Securities available-for-sale	224,804	284,288
US Government-sponsored Enterprises Debt Securities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	100,000	150,000
Securities available-for-sale, gross unrealized gains	10
Securities available-for-sale, gross unrealized losses		1,840
Securities available-for-sale	100,010	148,160
Collateralized Mortgage Backed Securities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	1,063,944	1,073,108
Securities available-for-sale, gross unrealized gains	6,553	560
Securities available-for-sale, gross unrealized losses	4	11,399
Securities available-for-sale	1,070,493	1,062,269
Collateralized Mortgage Obligations [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	60	63
Securities available-for-sale, gross unrealized losses	26	27
Securities available-for-sale	34	36
Corporate Debt Securities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	74,957	74,955
Securities available-for-sale, gross unrealized gains	413	425
Securities available-for-sale, gross unrealized losses	2,267	1,525
Securities available-for-sale	73,103	73,855
Mutual Funds [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	6,000	6,000
Securities available-for-sale, gross unrealized losses	85	167
Securities available-for-sale	5,915	5,833
Preferred Stock of Government Sponsored Entities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	2,811	2,811
Securities available-for-sale, gross unrealized gains	478	633
Securities available-for-sale, gross unrealized losses	486	228
Securities available-for-sale	2,803	3,216
Other Equity Securities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	3,902	4,108
Securities available-for-sale, gross unrealized gains	4,060	4,929
Securities available-for-sale, gross unrealized losses		342
Securities available-for-sale	$ 7,962	$ 8,695

Note 6 - Investment Securitie39

Note 6 - Investment Securities (Details) - Investments by Contractual Maturity Date - USD ($) $ in Thousands		Mar. 31, 2016	Dec. 31, 2015
Investments by Contractual Maturity Date [Abstract]
Due in one year or less		$ 154,963
Due in one year or less		154,978
Due after one year through five years		104,879
Due after one year through five years		105,470
Due after five years through ten years		145,501
Due after five years through ten years		143,358
Due after ten years (1)	[1]	1,071,081
Due after ten years (1)	[1]	1,081,318
Total		1,476,424	$ 1,595,723
Total		$ 1,485,124	$ 1,586,352
[1]	Equity securities are reported in this category

Note 6 - Investment Securitie40

Note 6 - Investment Securities (Details) - Temporarily Impaired Securities - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value	$ 42,534	$ 1,410,387
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses	546	14,253
Securities Available-for-Sale - 12 Months or longer - Fair value	48,778	49,400
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses	2,329	1,670
Securities Available-for-Sale - Fair Value	91,312	1,459,787
Securities Available-for-Sale - Unrealized Losses	2,875	15,923
US Treasury Securities [Member]
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value	29,965	224,289
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses	7	395
Securities Available-for-Sale - Fair Value	29,965	224,289
Securities Available-for-Sale - Unrealized Losses	7	395
Collateralized Mortgage Backed Securities [Member]
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value	389	1,025,342
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses	3	11,398
Securities Available-for-Sale - 12 Months or longer - Fair value	46	6
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses	1	1
Securities Available-for-Sale - Fair Value	435	1,025,348
Securities Available-for-Sale - Unrealized Losses	4	11,399
Collateralized Mortgage Obligations [Member]
Securities Available-for-Sale
Securities Available-for-Sale - 12 Months or longer - Fair value	34	36
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses	26	27
Securities Available-for-Sale - Fair Value	34	36
Securities Available-for-Sale - Unrealized Losses	26	27
Corporate Debt Securities [Member]
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value	9,950	9,950
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses	50	50
Securities Available-for-Sale - 12 Months or longer - Fair value	42,783	43,525
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses	2,217	1,475
Securities Available-for-Sale - Fair Value	52,733	53,475
Securities Available-for-Sale - Unrealized Losses	2,267	1,525
Mutual Funds [Member]
Securities Available-for-Sale
Securities Available-for-Sale - 12 Months or longer - Fair value	5,915	5,833
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses	85	167
Securities Available-for-Sale - Fair Value	5,915	5,833
Securities Available-for-Sale - Unrealized Losses	85	167
Preferred Stock of Government Sponsored Entities [Member]
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value	2,230	2,488
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses	486	228
Securities Available-for-Sale - Fair Value	2,230	2,488
Securities Available-for-Sale - Unrealized Losses	$ 486	228
US Government-sponsored Enterprises Debt Securities [Member]
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value		148,160
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses		1,840
Securities Available-for-Sale - Fair Value		148,160
Securities Available-for-Sale - Unrealized Losses		1,840
Other Equity Securities [Member]
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value		158
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses		342
Securities Available-for-Sale - Fair Value		158
Securities Available-for-Sale - Unrealized Losses		$ 342

Note 7 - Loans (Details)

Note 7 - Loans (Details)	3 Months Ended
	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Note 7 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	$ 134,815,000	$ 133,810,000
Percentage of Charge-off to Contractual Balances for Impaired Loans	14.20%	22.40%
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0
Loans and Leases Receivable, Impaired, Commitment to Lend		$ 0
Nonaccrual Loans [Member]
Note 7 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	$ 44,600,000	52,100,000
Financing Receivable, Modifications, Recorded Investment	23,200,000	39,900,000
Allowance for Credit Losses, Change in Method of Calculating Impairment	5,300,000	2,000,000
Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	90,200,000	81,700,000
Financing Receivable, Modifications, Recorded Investment	90,200,000	81,700,000
Allowance for Credit Losses, Change in Method of Calculating Impairment	$ 1,500,000	$ 5,400,000
Minimum [Member]
Note 7 - Loans (Details) [Line Items]
Period Loan is in Payment Default	60 days
Minimum [Member] | Rate Reduction [Member]
Note 7 - Loans (Details) [Line Items]
Troubled Debt Restructurings Length of Modifications	6 months
Maximum [Member]
Note 7 - Loans (Details) [Line Items]
Period Loan is in Payment Default	90 days
Maximum [Member] | Rate Reduction [Member]
Note 7 - Loans (Details) [Line Items]
Troubled Debt Restructurings Length of Modifications	3 years

Note 7 - Loans (Details) - Comp

Note 7 - Loans (Details) - Components of Loans in Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Type of Loans:
Gross loans	$ 10,363,647	$ 10,163,452
Less:
Allowance for loan losses	(134,552)	(138,963)
Unamortized deferred loan fees	(7,585)	(8,262)
Total loans, net	10,221,510	10,016,227
Loans held for sale		6,676
Commercial Portfolio Segment [Member]
Type of Loans:
Gross loans	2,251,187	2,316,863
Less:
Allowance for loan losses	(56,381)	(56,199)
Residential Portfolio Segment [Member]
Type of Loans:
Gross loans	2,043,789	1,932,355
Commercial Real Estate Portfolio Segment [Member]
Type of Loans:
Gross loans	5,445,575	5,301,218
Less:
Allowance for loan losses	(50,451)	(49,440)
Real Estate Construction Portfolio Segment [Member]
Type of Loans:
Gross loans	453,469	441,543
Less:
Allowance for loan losses	(12,744)	(22,170)
Equity Lines Portfolio Segment [Member]
Type of Loans:
Gross loans	168,283	168,980
Consumer Portfolio Segment [Member]
Type of Loans:
Gross loans	1,344	2,493
Less:
Allowance for loan losses	$ (7)	$ (9)

Note 7 - Loans (Details) - Aver

Note 7 - Loans (Details) - Average Balance and Interest Income Recognized Related to Impaired Loans - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Financing Receivable, Impaired [Line Items]
Loans, average recorded investment	$ 137,405	$ 175,989
Loans, interest income recognized	1,207	1,335
Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans, average recorded investment	12,670	25,426
Loans, interest income recognized	120	229
Real Estate Construction Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans, average recorded investment	20,292	22,990
Loans, interest income recognized	65	65
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans, average recorded investment	87,452	110,293
Loans, interest income recognized	890	917
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans, average recorded investment	16,991	17,280
Loans, interest income recognized	$ 132	$ 124

Note 7 - Loans (Details) - Impa

Note 7 - Loans (Details) - Impaired Loans and Related Allowance for Credit Losses - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
With no allocated allowance
Loans with no related allowance, unpaid principal balance	$ 123,330	$ 129,970
Loans with no related allowance, recorded investment	93,597	86,374
Loans with related allowance, unpaid principal balance	44,891	50,398
Loans with related allowance, recorded investment	41,218	47,436
Allowance	7,190	7,749
Total impaired loans	168,221	180,368
Total impaired loans	134,815	133,810
Total impaired loans	7,190	7,749
Commercial Portfolio Segment [Member]
With no allocated allowance
Loans with no related allowance, unpaid principal balance	10,912	15,493
Loans with no related allowance, recorded investment	8,968	6,721
Loans with related allowance, unpaid principal balance	4,188	7,757
Loans with related allowance, recorded investment	2,718	6,847
Allowance	225	530
Total impaired loans	225	530
Real Estate Construction Portfolio Segment [Member]
With no allocated allowance
Loans with related allowance, unpaid principal balance	33,009	51,290
Loans with related allowance, recorded investment	11,857	22,002
Commercial Real Estate Portfolio Segment [Member]
With no allocated allowance
Loans with no related allowance, unpaid principal balance	74,480	59,954
Loans with no related allowance, recorded investment	67,988	54,625
Loans with related allowance, unpaid principal balance	27,369	28,258
Loans with related allowance, recorded investment	26,157	27,152
Allowance	6,593	6,792
Total impaired loans	6,593	6,792
Residential Mortgage and Equity Lines Portfolio Segment [Member]
With no allocated allowance
Loans with no related allowance, unpaid principal balance	4,929	3,233
Loans with no related allowance, recorded investment	4,784	3,026
Loans with related allowance, unpaid principal balance	13,334	14,383
Loans with related allowance, recorded investment	12,343	13,437
Allowance	372	427
Total impaired loans	$ 372	$ 427

Note 7 - Loans (Details) - Agin

Note 7 - Loans (Details) - Aging of Loan Portfolio - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	$ 113,788	$ 78,466
Non-accrual loans	44,643	52,130
Loans not past due	10,249,859	10,084,986
Loans	10,363,647	10,163,452
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	60,081	22,854
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	9,064	3,482
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	45,894	12,133
Non-accrual loans	2,645	3,545
Loans not past due	2,205,293	2,304,730
Loans	2,251,187	2,316,863
Commercial Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	35,329	8,367
Commercial Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	7,920	221
Real Estate Construction Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	7,708	23,591
Non-accrual loans	6,179	16,306
Loans not past due	445,761	417,952
Loans	453,469	441,543
Real Estate Construction Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	1,529	7,285
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	46,817	29,697
Non-accrual loans	28,537	25,231
Loans not past due	5,398,758	5,271,521
Loans	5,445,575	5,301,218
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	17,136	2,243
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	1,144	2,223
Residential Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	13,369	13,045
Non-accrual loans	7,282	7,048
Loans not past due	2,198,703	2,088,290
Loans	2,212,072	2,101,335
Residential Mortgage Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due	6,087	4,959
Residential Mortgage Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans past due		1,038
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans not past due	1,344	2,493
Loans	$ 1,344	$ 2,493

Note 7 - Loans (Details) - Trou

Note 7 - Loans (Details) - Troubled Debt Restructuring - Accruing Troubled Debt Restructuring [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2015USD ($)
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	8
Pre-Modification Recorded Investment	$ 10,985
Post-Modification Recorded Investment	10,837
Specific Reserve	148
Charge-offs	$ 46
Commercial Portfolio Segment [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	1
Pre-Modification Recorded Investment	$ 850
Post-Modification Recorded Investment	$ 850
Commercial Real Estate Portfolio Segment [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	3
Pre-Modification Recorded Investment	$ 8,613
Post-Modification Recorded Investment	$ 8,613
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	4
Pre-Modification Recorded Investment	$ 1,522
Post-Modification Recorded Investment	1,374
Specific Reserve	148
Charge-offs	$ 46

Note 7 - Loans (Details) - Accr

Note 7 - Loans (Details) - Accruing Troubled Debt Restructurings - Accruing Troubled Debt Restructuring [Member] - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Modifications [Line Items]
Accruing TDRs	$ 90,172
Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	38,993	$ 30,200
Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	7,021	7,044
Rate Reduction and Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	44,158	81,680
Rate Reduction and Forgiveness of Principal [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs		44,436
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	9,041
Commercial Portfolio Segment [Member] | Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	7,446	8,298
Commercial Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	1,595	10,024
Commercial Portfolio Segment [Member] | Rate Reduction and Forgiveness of Principal [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs		1,726
Real Estate Construction Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	5,679
Real Estate Construction Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	5,679	5,696
Real Estate Construction Portfolio Segment [Member] | Rate Reduction and Forgiveness of Principal [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs		5,696
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	65,607
Commercial Real Estate Portfolio Segment [Member] | Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	26,393	16,701
Commercial Real Estate Portfolio Segment [Member] | Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	6,025	6,045
Commercial Real Estate Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	33,189	56,546
Commercial Real Estate Portfolio Segment [Member] | Rate Reduction and Forgiveness of Principal [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs		33,800
Residential Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	9,845
Residential Portfolio Segment [Member] | Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	5,154	5,201
Residential Portfolio Segment [Member] | Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	996	999
Residential Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	$ 3,695	9,414
Residential Portfolio Segment [Member] | Rate Reduction and Forgiveness of Principal [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs		$ 3,214

Note 7 - Loans (Details) - Non-

Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings - Non Accruing Troubled Debt Restructuring [Member] - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	$ 23,209	$ 39,923
Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	2,914	12,946
Rate Reduction and Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	20,295	26,977
Commercial Portfolio Segment [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	1,091	1,123
Commercial Portfolio Segment [Member] | Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	1,001	1,033
Commercial Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	90	90
Real Estate Construction Portfolio Segment [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	21,560	15,806
Real Estate Construction Portfolio Segment [Member] | Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	1,532	9,981
Real Estate Construction Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	20,028	5,825
Residential Portfolio Segment [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	558	1,088
Residential Portfolio Segment [Member] | Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	381	388
Residential Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs	$ 177	700
Commercial Real Estate Portfolio Segment [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs		21,906
Commercial Real Estate Portfolio Segment [Member] | Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs		1,544
Commercial Real Estate Portfolio Segment [Member] | Rate Reduction and Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non-accrual TDRs		$ 20,362

Note 7 - Loans (Details) - Tr49

Note 7 - Loans (Details) - Troubled Debt Restructuring Activity - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring Activity [Line Items]
Beginning balance	$ 81,680	$ 104,356
New restructurings		10,628
Restructured loans restored to accrual status	10,303
Charge-offs		(148)
Payments	(1,811)	(4,254)
Restructured loans placed on nonaccrual		(10,189)
Ending balance	90,172	100,393
Non Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring Activity [Line Items]
Beginning balance	39,923	41,618
New restructurings		209
Restructured loans restored to accrual status	(10,303)
Charge-offs		(2,754)
Payments	(6,411)	(4,721)
Restructured loans placed on nonaccrual		10,189
Ending balance	$ 23,209	$ 44,541

Note 7 - Loans (Details) - Port

Note 7 - Loans (Details) - Portfolio by Risk Rating - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 10,363,647	$ 10,163,452
Loans held for sale		6,676
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	9,851,783	9,669,161
Loans held for sale		732
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	287,256	272,066
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	213,883	210,497
Loans held for sale		5,944
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	10,725	11,728
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,251,187	2,316,863
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,081,780	2,143,270
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	92,891	110,338
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	75,461	61,297
Commercial Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,055	1,958
Real Estate Construction Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	453,469	441,543
Real Estate Construction Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	436,415	413,765
Real Estate Construction Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,197	5,776
Real Estate Construction Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	11,357	21,502
Real Estate Construction Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	500	500
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,445,575	5,301,218
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,131,844	5,018,199
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	187,237	155,553
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	117,324	118,196
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	9,170	9,270
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,212,072	2,101,335
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,200,400	2,091,434
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,931	399
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	9,741	9,502
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,344	2,493
Consumer Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 1,344	$ 2,493

Note 7 - Loans (Details) - Allo

Note 7 - Loans (Details) - Allowance for Loan Losses by Portfolio Segment and Based on Impairment Method - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Loans individually evaluated for impairment
Loans individually evaluated for impairment, allowance	$ 7,190	$ 7,749
Loans individually evaluated for impairment, balance	134,815	133,810
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	127,362	131,214
Loans collectively evaluated for impairment, balance	10,228,832	10,029,642
Loans, allowance	134,552	138,963
Loans	10,363,647	10,163,452
Commercial Portfolio Segment [Member]
Loans individually evaluated for impairment
Loans individually evaluated for impairment, allowance	225	530
Loans individually evaluated for impairment, balance	11,686	13,568
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	56,156	55,669
Loans collectively evaluated for impairment, balance	2,239,501	2,303,295
Loans, allowance	56,381	56,199
Loans	2,251,187	2,316,863
Real Estate Construction Portfolio Segment [Member]
Loans individually evaluated for impairment
Loans individually evaluated for impairment, balance	11,857	22,002
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	12,744	22,170
Loans collectively evaluated for impairment, balance	441,612	419,541
Loans, allowance	12,744	22,170
Loans	453,469	441,543
Commercial Real Estate Portfolio Segment [Member]
Loans individually evaluated for impairment
Loans individually evaluated for impairment, allowance	6,593	6,792
Loans individually evaluated for impairment, balance	94,145	81,776
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	43,858	42,648
Loans collectively evaluated for impairment, balance	5,351,430	5,219,442
Loans, allowance	50,451	49,440
Loans	5,445,575	5,301,218
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Loans individually evaluated for impairment
Loans individually evaluated for impairment, allowance	372	427
Loans individually evaluated for impairment, balance	17,127	16,464
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	14,597	10,718
Loans collectively evaluated for impairment, balance	2,194,945	2,084,871
Loans, allowance	14,969	11,145
Loans	2,212,072	2,101,335
Consumer Portfolio Segment [Member]
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	7	9
Loans collectively evaluated for impairment, balance	1,344	2,493
Loans, allowance	7	9
Loans	$ 1,344	$ 2,493

Note 7 - Loans (Details) - Al52

Note 7 - Loans (Details) - Allowance for Loan Losses by Portfolio Segment - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	$ 138,963	$ 161,420
Provision/(reversal) for possible loan losses	(10,500)	(5,000)
Charge-offs	(2,329)	(4,464)
Recoveries	8,418	4,133
Net charge-offs	6,089	(331)
Balance, ending	134,552	156,089
Reserve to impaired loans	7,190	11,044
Reserve to non-impaired loans	127,362	145,045
Reserve for off-balance sheet credit commitments	2,694	1,652
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	56,199	47,501
Provision/(reversal) for possible loan losses	1,265	793
Charge-offs	(2,070)	(864)
Recoveries	987	2,275
Net charge-offs	(1,083)	1,411
Balance, ending	56,381	49,705
Reserve to impaired loans	225	3,911
Reserve to non-impaired loans	56,156	45,794
Reserve for off-balance sheet credit commitments	2,641	903
Real Estate Construction Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	22,170	27,652
Provision/(reversal) for possible loan losses	(16,702)	(4,427)
Recoveries	7,276	45
Net charge-offs	7,276	45
Balance, ending	12,744	23,270
Reserve to non-impaired loans	12,744	23,270
Reserve for off-balance sheet credit commitments		527
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	49,440	74,673
Provision/(reversal) for possible loan losses	978	(1,697)
Charge-offs	(110)	(3,452)
Recoveries	143	1,794
Net charge-offs	33	(1,658)
Balance, ending	50,451	71,318
Reserve to impaired loans	6,593	6,635
Reserve to non-impaired loans	43,858	64,683
Reserve for off-balance sheet credit commitments	53	181
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	11,145	11,578
Provision/(reversal) for possible loan losses	3,961	328
Charge-offs	(149)	(148)
Recoveries	12	19
Net charge-offs	(137)	(129)
Balance, ending	14,969	11,777
Reserve to impaired loans	372	498
Reserve to non-impaired loans	14,597	11,279
Reserve for off-balance sheet credit commitments		40
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning	9	16
Provision/(reversal) for possible loan losses	(2)	3
Balance, ending	7	19
Reserve to impaired loans	0
Reserve to non-impaired loans	$ 7	19
Reserve for off-balance sheet credit commitments		$ 1

Note 9 - Borrowed Funds (Detail

Note 9 - Borrowed Funds (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Note 9 - Borrowed Funds (Details) [Line Items]
Securities Sold under Agreements to Repurchase (in Dollars)	$ 400,000	$ 400,000
Weighted Average Rate of Securities Sold Under Agreements	3.89%	3.89%
Advances from Federal Home Loan Banks (in Dollars)	$ 475,000	$ 275,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	0.46%	1.13%
Floating to Fixed Rate Agreements Totaling $200 Million [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Number of Securities Sold Under Agreements to Repurchase	4
Total Floating to Fixed Rate (in Dollars)	$ 200,000
Debt, Weighted Average Interest Rate	5.00%
Floating Interest Rate, Range of Time Period	1 year
Securities Sold under Agreements to Repurchase [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Investment Securities Pledged As Collateral (in Dollars)	$ 429,000	$ 430,000
Mature in March 2018 [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, Interest Rate			1.13%
Non Callable Fixed Rate Securities [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Weighted Average Rate of Securities Sold Under Agreements	4.00%
Number of Securities Sold Under Agreements to Repurchase	200,000,000	4
Debt, Weighted Average Interest Rate	2.78%	2.78%
Mature in August 2016 [Member] | Non Callable Fixed Rate Securities [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months (in Dollars)	$ 50,000
Mature in July 2017 [Member] | Non Callable Fixed Rate Securities [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Year Two (in Dollars)	50,000
Mature in June 2018 [Member] | Non Callable Fixed Rate Securities [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Year Three (in Dollars)	50,000
Mature in July 2018 [Member] | Non Callable Fixed Rate Securities [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Year Four (in Dollars)	50,000
Over-night Borrowings [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Advances from Federal Home Loan Banks (in Dollars)	$ 100,000	$ 250,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	0.48%	0.27%
At Fixed Rate [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Advances from Federal Home Loan Banks (in Dollars)	$ 375,000	$ 25,000
Mature in April 2016 [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Advances from Federal Home Loan Banks (in Dollars)	350,000
Mature in March 2018 [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Advances from Federal Home Loan Banks (in Dollars)	$ 25,000
Maximum [Member] | Floating to Fixed Rate Agreements Totaling $200 Million [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.07%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Floating to Fixed Rate Agreements Totaling $200 Million [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.40%
Minimum [Member] | Floating to Fixed Rate Agreements Totaling $200 Million [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.89%

Note 10 - Income Taxes (Details

Note 10 - Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Note 10 - Income Taxes (Details) [Line Items]
Income Tax Expense (Benefit)	$ 22,675	$ 21,364
Effective Income Tax Rate Reconciliation, Percent	32.90%	37.30%
Income Taxes Receivable			$ 28,900
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Earliest Tax Year [Member]
Note 10 - Income Taxes (Details) [Line Items]
Open Tax Year	2,012
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member] | Earliest Tax Year [Member]
Note 10 - Income Taxes (Details) [Line Items]
Open Tax Year	2,008

Note 11 - Fair Value Measurem55

Note 11 - Fair Value Measurements (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Note 11 - Fair Value Measurements (Details) [Line Items]
Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Warrants (in Dollars)	$ 94,000	$ 62,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets (in Dollars)	$ 27,271,000	24,701,000
Accounts Receivable Collateral [Member]
Note 11 - Fair Value Measurements (Details) [Line Items]
Collateral Discount Rates	55.00%
Inventory Collateral [Member]
Note 11 - Fair Value Measurements (Details) [Line Items]
Collateral Discount Rates	65.00%
Net of Estimated Disposal Costs [Member]
Note 11 - Fair Value Measurements (Details) [Line Items]
Other Real Estate, Foreclosed Assets, and Repossessed Assets (in Dollars)	$ 27,300,000	$ 24,700,000
Minimum [Member]
Note 11 - Fair Value Measurements (Details) [Line Items]
Expected Life of Warrants	1 year
Estimated Sales Cost Applied to Collateral	3.00%
Maximum [Member]
Note 11 - Fair Value Measurements (Details) [Line Items]
Expected Life of Warrants	7 years
Estimated Sales Cost Applied to Collateral	6.00%
Warrants Outstanding [Member] | Minimum [Member]
Note 11 - Fair Value Measurements (Details) [Line Items]
Fair Value Assumptions, Risk Free Interest Rate	0.79%
Fair Value Assumptions, Expected Volatility Rate	13.06%
Warrants Outstanding [Member] | Maximum [Member]
Note 11 - Fair Value Measurements (Details) [Line Items]
Fair Value Assumptions, Risk Free Interest Rate	1.60%
Fair Value Assumptions, Expected Volatility Rate	18.21%

Note 11 - Fair Value Measurem56

Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Securities available-for-sale
Securities available-for-sale	$ 1,485,124	$ 1,586,352
Assets	1,488,531	1,589,753
Liabilities
Liabilities	15,791	10,648
Fair Value, Inputs, Level 1 [Member]
Securities available-for-sale
Securities available-for-sale	230,719	290,121
Assets	230,719	290,121
Fair Value, Inputs, Level 2 [Member]
Securities available-for-sale
Securities available-for-sale	1,254,405	1,296,231
Assets	1,257,718	1,299,570
Liabilities
Liabilities	15,791	10,648
Fair Value, Inputs, Level 3 [Member]
Securities available-for-sale
Assets	94	62
US Treasury Securities [Member]
Securities available-for-sale
Securities available-for-sale	224,804	284,288
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Securities available-for-sale
Securities available-for-sale	224,804	284,288
US Government-sponsored Enterprises Debt Securities [Member]
Securities available-for-sale
Securities available-for-sale	100,010	148,160
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available-for-sale
Securities available-for-sale	100,010	148,160
Collateralized Mortgage Backed Securities [Member]
Securities available-for-sale
Securities available-for-sale	1,070,493	1,062,269
Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available-for-sale
Securities available-for-sale	1,070,493	1,062,269
Collateralized Mortgage Obligations [Member]
Securities available-for-sale
Securities available-for-sale	34	36
Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available-for-sale
Securities available-for-sale	34	36
Corporate Debt Securities [Member]
Securities available-for-sale
Securities available-for-sale	73,103	73,855
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available-for-sale
Securities available-for-sale	73,103	73,855
Mutual Funds [Member]
Securities available-for-sale
Securities available-for-sale	5,915	5,833
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Securities available-for-sale
Securities available-for-sale	5,915	5,833
Preferred Stock of Government Sponsored Entities [Member]
Securities available-for-sale
Securities available-for-sale	2,803	3,216
Preferred Stock of Government Sponsored Entities [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available-for-sale
Securities available-for-sale	2,803	3,216
Other Equity Securities [Member]
Securities available-for-sale
Securities available-for-sale	7,962	8,695
Other Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available-for-sale
Securities available-for-sale	7,962	8,695
Warrant [Member]
Securities available-for-sale
Assets	94	62
Warrant [Member] | Fair Value, Inputs, Level 3 [Member]
Securities available-for-sale
Assets	94	62
Foreign Exchange Contract [Member]
Securities available-for-sale
Assets	3,313	3,339
Liabilities
Liabilities	913	4,124
Foreign Exchange Contract [Member] | Fair Value, Inputs, Level 2 [Member]
Securities available-for-sale
Assets	3,313	3,339
Liabilities
Liabilities	913	4,124
Interest Rate Swap [Member]
Liabilities
Liabilities	14,878	6,496
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Liabilities
Liabilities	$ 14,878	6,496
Option Contracts [Member]
Liabilities
Liabilities		28
Option Contracts [Member] | Fair Value, Inputs, Level 2 [Member]
Liabilities
Liabilities		$ 28

Note 11 - Fair Value Measurem57

Note 11 - Fair Value Measurements (Details) - Financial Assets and Liabilities Measured On a Non-recurring Basis - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2016		Mar. 31, 2015		Dec. 31, 2015		Dec. 31, 2014
Impaired loans by type:
Fair value measurement	$ 54,972				$ 58,889
Total losses/gains	238		$ 609		2,507		$ 4,596
Impaired Loans [Member]
Impaired loans by type:
Fair value measurement	34,029				39,685
Total losses/gains			204		1,550		3,958
Other Real Estate Owned [Member]
Impaired loans by type:
Fair value measurement	16,112	[1]			14,282	[2]
Total losses/gains	128	[1]	181	[1]	404	[2]	202	[2]
Investments in Venture Capital [Member]
Impaired loans by type:
Fair value measurement	4,831				4,922
Total losses/gains	$ 110		224		$ 553		436
Fair Value, Inputs, Level 1 [Member] | Other Real Estate Owned [Member]
Impaired loans by type:
Fair value measurement		[1]				[2]
Fair Value, Inputs, Level 2 [Member]
Impaired loans by type:
Fair value measurement	$ 11,906				$ 10,047
Fair Value, Inputs, Level 2 [Member] | Other Real Estate Owned [Member]
Impaired loans by type:
Fair value measurement	11,906	[1]			10,047	[2]
Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Fair value measurement	43,066				48,842
Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
Impaired loans by type:
Fair value measurement	34,029				39,685
Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member]
Impaired loans by type:
Fair value measurement	4,206	[1]			4,235	[2]
Fair Value, Inputs, Level 3 [Member] | Investments in Venture Capital [Member]
Impaired loans by type:
Fair value measurement	4,831				4,922
Commercial Portfolio Segment [Member]
Impaired loans by type:
Fair value measurement	2,493				6,317
Total losses/gains					806		17
Commercial Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Fair value measurement	2,493				6,317
Commercial Real Estate Portfolio Segment [Member]
Impaired loans by type:
Fair value measurement	19,565				20,359
Total losses/gains			56		598		3,914
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Fair value measurement	19,565				20,359
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Impaired loans by type:
Fair value measurement	11,971				13,009
Total losses/gains			$ 148		146		$ 27
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Fair value measurement	$ 11,971				$ 13,009
[1]	Other real estate owned balance of $27.3 million in the condensed consolidated balance sheet is net of estimated disposal costs.
[2]	Other real estate owned balance of $24.7 million in the consolidated balance sheet is net of estimated disposal costs.

Note 12 - Fair Value of Finan58

Note 12 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Financial Assets
Cash and due from banks	$ 192,642	$ 180,130	$ 182,159	$ 176,830
Cash and due from banks	192,642	180,130
Short-term investments	432,384	536,880
Short-term investments	432,384	536,880
Securities available-for-sale	1,485,124	1,586,352
Loans held for sale		6,676
Loans held for sale		6,676
Loans, net	10,221,510	10,016,227
Loans, net	10,142,747	9,938,810
Investment in Federal Home Loan Bank stock	17,250	17,250
Investment in Federal Home Loan Bank stock	17,250	17,250
Warrants	94	62
Warrants	94	62
Foreign exchange contracts	138,201	100,602
Foreign exchange contracts	3,314	3,339
Financial Liabilities
Deposits	10,324,116	10,509,087
Deposits	10,331,030	10,509,879
Securities sold under agreements to repurchase	400,000	400,000
Securities sold under agreements to repurchase	413,195	413,417
Advances from Federal Home Loan Bank	475,000	275,000
Advances from Federal Home Loan Bank	475,128	274,488
Other borrowings	17,792	18,593
Other borrowings	15,478	16,684
Long-term debt	119,136	119,136
Long-term debt	58,951	58,420
Option contracts		9,396
Option contracts		28
Foreign exchange contracts	73,006	115,418
Foreign exchange contracts	913	4,124
Interest rate swaps	476,590	459,416
Interest rate swaps	14,878	6,496
Off-Balance Sheet Financial Instruments
Commitments to extend credit	2,098,360	1,971,848
Commitments to extend credit	(5,722)	(5,570)
Standby letters of credit	49,334	49,081
Standby letters of credit	(199)	(194)
Other letters of credit	30,883	38,131
Other letters of credit	(18)	(22)
Bill of lading guarantees	$ 52	454
Bill of lading guarantees		$ (1)

Note 12 - Fair Value of Finan59

Note 12 - Fair Value of Financial Instruments (Details) - Fair Value Hierarchy of Financial Instruments - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Financial Assets
Cash and due from banks	$ 192,642	$ 180,130
Short-term investments	432,384	536,880
Securities available-for-sale	1,485,124	1,586,352
Loans held-for-sale		6,676
Loans, net	10,142,747	9,938,810
Investment in Federal Home Loan Bank stock	17,250	17,250
Warrants	94	62
Financial Liabilities
Deposits	10,331,030	10,509,879
Securities sold under agreement to repurchase	413,195	413,417
Advances from Federal Home Loan Bank	475,128	274,488
Other borrowings	15,478	16,684
Long-term debt	58,951	58,420
Fair Value, Inputs, Level 1 [Member]
Financial Assets
Cash and due from banks	192,642	180,130
Short-term investments	432,384	536,880
Securities available-for-sale	230,719	290,121
Fair Value, Inputs, Level 2 [Member]
Financial Assets
Securities available-for-sale	1,254,405	1,296,231
Investment in Federal Home Loan Bank stock	17,250	17,250
Financial Liabilities
Securities sold under agreement to repurchase	413,195	413,417
Advances from Federal Home Loan Bank	475,128
Long-term debt	58,951	58,420
Fair Value, Inputs, Level 3 [Member]
Financial Assets
Loans held-for-sale		6,676
Loans, net	10,142,747	9,938,810
Warrants	94	62
Financial Liabilities
Deposits	10,331,030	10,509,879
Advances from Federal Home Loan Bank		274,488
Other borrowings	$ 15,478	$ 16,684

Note 14 - Financial Derivativ60

Note 14 - Financial Derivatives (Details) - USD ($)	1 Months Ended	3 Months Ended
	May. 31, 2014	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Note 14 - Financial Derivatives (Details) [Line Items]
Junior Subordinated Notes	$ 119,100,000
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax		$ (3,120,000)	$ (1,588,000)
Notional Amount of Option Contract		0
Negative Fair Value		913,000
Cash [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Collateral Already Posted, Aggregate Fair Value		13,300,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative, Outstanding Notional Amount	$ 119,100,000	119,100,000
Derivative, Original Maturity	10 years
Derivative, Average Fixed Interest Rate	2.61%
Derivative, Average Variable Interest Rate	0.63%
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax		(6,100,000)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative, Outstanding Notional Amount		$ 357,500,000
Derivative, Average Fixed Interest Rate		4.68%
Derivative, Average Variable Interest Rate		3.64%
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax		$ (4,300,000)
Derivative, Average Basis Spread on Variable Rate		3.21%
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Interest Expense [Member] | Cash Flow Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Net Accrued on Interest Rate Swaps		$ 620,000	703,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Interest Expense [Member] | Fair Value Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Net Accrued on Interest Rate Swaps		934,000	$ 683,000
Positive Fair Value Member
Note 14 - Financial Derivatives (Details) [Line Items]
Sum of Spot and Forward Contract Notional Amount		138,200,000		$ 100,600,000
Positive Fair Value		3,300,000		3,300,000
Negative Fair Value Member
Note 14 - Financial Derivatives (Details) [Line Items]
Notional Amount of Option Contract				9,400,000
Sum of Spot and Forward Contract Notional Amount		$ 73,000,000		115,400,000
Negative Fair Value				4,100,000
Open Option Contracts, Fair Value				$ 28,000
Minimum [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative, Original Maturity		4 years
Maximum [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative, Original Maturity		8 years

Note 15 - Balance Sheet Offse61

Note 15 - Balance Sheet Offsetting (Details) - Financial Instruments That Are Eligible for Offset in the Consolidated Balance Sheet - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Liabilities:
Securities sold under agreements to repurchase, gross	$ 400,000	$ 400,000
Securities sold under agreements to repurchase, net	400,000	400,000
Securities sold under agreements to repurchase, collateral posted	(400,000)	(400,000)
Derivatives, gross	14,878	6,496
Derivatives, net	14,878	6,496
Derivatives, collateral posted	$ (14,878)	$ (6,496)

Note 16 - Stockholders' Equit62

Note 16 - Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Stockholders' Equity Note [Abstract]
Stockholders' Equity Attributable to Parent	$ 1,734,673		$ 1,747,778
Stockholders' Equity, Period Increase (Decrease)	13,100
Treasury Stock, Value, Acquired, Cost Method	54,400
Dividends, Common Stock, Cash	14,200
Net Income (Loss) Attributable to Parent	46,163	$ 35,980
Other Comprehensive Income (Loss), Net of Tax	$ 7,353	$ 4,923

Note 16 - Stockholders' Equit63

Note 16 - Stockholders' Equity (Details) - Accumulated Other Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Beginning balance, loss, net of tax
Securities available-for-sale	$ (5,431)	$ (3,172)
Cash flow hedge derivatives	(2,995)	(2,397)
Total	(8,426)	(5,569)
Net unrealized gains/(losses) arising during the period
Securities available-for-sale	10,354	6,499
Cash flow hedge derivatives	(3,120)	(1,588)
Reclassification adjustment for net losses in net income
Securities available-for-sale	(119)	(12)
Total other comprehensive income/(loss)
Total	7,353	4,923
Ending balance, gain/(loss), net of tax
Securities available-for-sale	5,042	3,339
Cash flow hedge derivatives	(6,115)	(3,985)
Total	(1,073)	(646)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Net unrealized gains/(losses) arising during the period
Securities available-for-sale	17,863	11,213
Securities available-for-sale	7,509	4,714
Securities available-for-sale	10,354	6,499
Reclassification adjustment for net losses in net income
Securities available-for-sale	206	21
Securities available-for-sale	87	9
Securities available-for-sale	119	12
Total other comprehensive income/(loss)
Securities available-for-sale	18,069	11,234
Securities available-for-sale	7,596	4,723
Securities available-for-sale	10,473	6,511
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Net unrealized gains/(losses) arising during the period
Cash flow hedge derivatives	(5,383)	(2,740)
Cash flow hedge derivatives	(2,263)	(1,152)
Cash flow hedge derivatives	(3,120)	(1,588)
Total	12,480	8,473
Total	5,246	3,562
Total	7,234	4,911
Reclassification adjustment for net losses in net income
Total	206	21
Total	87	9
Total	119	12
Total other comprehensive income/(loss)
Cash flow hedge derivatives	(5,383)	(2,740)
Cash flow hedge derivatives	(2,263)	(1,152)
Cash flow hedge derivatives	(3,120)	(1,588)
Total	12,686	8,494
Total	5,333	3,571
Total	$ 7,353	$ 4,923

Note 17 - Stock Repurchase Pr64

Note 17 - Stock Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
	Feb. 29, 2016	Mar. 31, 2016	Feb. 01, 2016
Note 17 - Stock Repurchase Program (Details) [Line Items]
Treasury Stock, Value, Acquired, Cost Method (in Dollars)		$ 54.4
August 2015 Repurchase Program [Member]
Note 17 - Stock Repurchase Program (Details) [Line Items]
Treasury Stock, Shares, Acquired	633,250
Treasury Stock, Value, Acquired, Cost Method (in Dollars)	$ 17
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share)	$ 26.82
February 2016 Repurchase Program [Member]
Note 17 - Stock Repurchase Program (Details) [Line Items]
Treasury Stock, Shares, Acquired	1,380,578
Treasury Stock, Value, Acquired, Cost Method (in Dollars)	$ 37.5
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share)	$ 27.13
Stock Repurchase Program, Number of Shares Authorized to be Repurchased			45,000,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased		7,500,000