Cathay General Bancorp (CATY) 10-Q 8 May 15 2015 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	CATHAY GENERAL BANCORP
Document Type	10-Q
Current Fiscal Year End Date	-19
Entity Common Stock, Shares Outstanding		79,912,799
Amendment Flag	FALSE
Entity Central Index Key	861842
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	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Assets
Cash and due from banks	$182,159	$176,830
Short-term investments and interest bearing deposits	618,726	489,614
Securities available-for-sale (amortized cost of $1,197,922 in 2015 and $1,324,408 in 2014)	1,203,682	1,318,935
Loans held for sale		973
Loans	9,224,797	8,914,080
Less: Allowance for loan losses	-156,089	-161,420
Unamortized deferred loan fees, net	-11,116	-12,392
Loans, net	9,057,592	8,740,268
Federal Home Loan Bank stock	25,000	30,785
Other real estate owned, net	30,799	31,477
Affordable housing investments, net	129,829	104,579
Premises and equipment, net	98,512	99,682
Customers’ liability on acceptances	17,956	35,656
Accrued interest receivable	26,584	25,364
Goodwill	316,340	316,340
Other intangible assets, net	3,084	3,237
Other assets	199,826	143,106
Total assets	11,910,089	11,516,846
Deposits
Non-interest-bearing demand deposits	1,691,173	1,664,914
Interest-bearing deposits:
NOW deposits	822,940	778,691
Money market deposits	1,551,453	1,538,187
Savings deposits	557,924	533,940
Time deposits under $100,000	1,241,529	1,162,547
Time deposits of $100,000 or more	3,248,231	3,105,181
Total deposits	9,113,250	8,783,460
Securities sold under agreements to repurchase	400,000	450,000
Advances from the Federal Home Loan Bank	485,000	425,000
Other borrowings for affordable housing investments	22,482	19,934
Long-term debt	119,136	119,136
Acceptances outstanding	17,956	35,656
Other liabilities	118,019	80,772
Total liabilities	10,275,843	9,913,958
Commitments and contingencies
Stockholders’ Equity
Common stock, $0.01 par value, 100,000,000 shares authorized, 84,108,607 issued and 79,901,042 outstanding at March 31, 2015, and 84,022,118 issued and 79,814,553 outstanding at December 31, 2014	841	840
Additional paid-in-capital	787,956	789,519
Accumulated other comprehensive loss, net	-646	-5,569
Retained earnings	971,831	943,834
Treasury stock, at cost (4,207,565 shares at March 31, 2015, and at December 31, 2014)	-125,736	-125,736
Total equity	1,634,246	1,602,888
Total liabilities and equity	$11,910,089	$11,516,846

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Securities available-for-sale, amortized cost (in Dollars)	$1,197,922	$1,324,408
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	84,108,607	79,901,042
Common stock shares outstanding	84,022,118	79,814,553
Treasury stock shares	4,207,565	4,207,565

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Interest and Dividend Income
Loans receivable, including loan fees	$100,100	$92,732
Investment securities	3,774	7,576
Federal Home Loan Bank stock	581	450
Deposits with banks	479	449
Total interest and dividend income	104,934	101,207
Interest Expense
Time deposits of $100,000 or more	6,773	6,664
Other deposits	4,793	4,028
Securities sold under agreements to repurchase	3,925	6,930
Advances from Federal Home Loan Bank	93	199
Long-term debt	1,424	728
Total interest expense	17,008	18,549
Net interest income before provision for credit losses	87,926	82,658
Reversal of provision for loan losses	-5,000
Net interest income after credit for loan losses	92,926	82,658
Non-Interest Income
Securities (losses)/gains, net	-21	5,960
Letters of credit commissions	1,268	1,468
Depository service fees	1,301	1,363
Other operating income	6,001	5,768
Total non-interest income	8,549	14,559
Non-Interest Expense
Salaries and employee benefits	22,616	23,451
Occupancy expense	4,021	3,862
Computer and equipment expense	2,502	2,302
Professional services expense	5,352	5,156
FDIC and State assessments	2,260	2,154
Marketing expense	820	564
Other real estate owned expense	483	759
Operations of affordable housing investments, net	2,383	2,436
Amortization of core deposit intangibles	177	172
Costs associated with debt redemption		3,376
Other operating expense	3,517	3,836
Total non-interest expense	44,131	48,068
Income before income tax expense	57,344	49,149
Income tax expense	21,364	17,890
Net income	35,980	31,259
Other comprehensive income, net of tax
Unrealized holding gain on securities available-for-sale	6,499	11,094
Less: reclassification adjustments included in net income	-12	3,455
Unrealized holding loss on cash flow hedge derivatives	-1,588
Total other comprehensive gain, net of tax	4,923	7,639
Total comprehensive income	$40,903	$38,898
Net income per common share:
Basic (in Dollars per share)	$0.45	$0.39
Diluted (in Dollars per share)	$0.45	$0.39
Cash dividends paid per common share (in Dollars per share)	$0.10	$0.05
Average common shares outstanding
Basic (in Shares)	79,835,628	79,595,757
Diluted (in Shares)	80,309,383	80,039,382

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash Flows from Operating Activities
Net income	$35,980,000	$31,259,000
Adjustments to reconcile net income to net cash provided by/(used in) operating activities:
Credit for loan losses	-5,000,000
Provision for losses on other real estate owned	181,000	617,000
Deferred tax liability	6,840,000	6,012,000
Depreciation	1,732,000	1,742,000
Net losses/(gains) on sale and transfer of other real estate owned	154,000	-559,000
Net gains on sale of loans	-596,000	-128,000
Proceeds from sales of loans	10,360,000	4,525,000
Originations of loans held-for-sale	-8,791,000	-4,397,000
Net change in trading securities		4,936,000
Write-downs on venture capital investments	224,000	75,000
Net losses/(gains) on sales and calls of securities	21,000	-5,960,000
Amortization/accretion of security premiums/discounts, net	502,000	867,000
Amortization of other intangible assets	197,000	196,000
Excess tax short-fall from share-based payment arrangements	4,395,000	1,227,000
Stock based compensation and stock issued to officers as compensation	1,570,000	1,353,000
Net change in accrued interest receivable and other assets	6,631,000	3,285,000
Net change in other liabilities	1,379,000	1,374,000
Net cash provided by operating activities	55,779,000	46,424,000
Cash Flows from Investing Activities
Increase in short-term investments	-129,112,000	-103,368,000
Purchase of investment securities available-for-sale	-703,305,000	-246,498,000
Proceeds from sale of investment securities available-for-sale	741,992,000	139,671,000
Proceeds from repayments, maturities and calls of investment securities available-for-sale	12,102,000	133,369,000
Purchase of Federal Home Loan Bank stock		-4,901,000
Redemptions of Federal Home Loan Bank stock	5,785,000
Net increase in loans	-305,651,000	-220,402,000
Purchase of premises and equipment	-562,000	-2,081,000
Proceeds from sales of other real estate owned	1,043,000	6,379,000
Net increase in investment in affordable housing	-1,351,000	-1,894,000
Net cash used in investing activities	-379,059,000	-299,725,000
Cash Flows from Financing Activities
Net increase in deposits	329,724,000	251,032,000
Net decrease in federal funds purchased and securities sold under agreements to repurchase	-50,000,000	-100,000,000
Advances from Federal Home Loan Bank	2,242,000,000	5,127,400,000
Repayment of Federal Home Loan Bank borrowings	-2,182,000,000	-5,012,400,000
Cash dividends paid	-7,983,000	-3,980,000
Proceeds from shares issued under Dividend Reinvestment Plan	1,289,000	386,000
Proceeds from exercise of stock options	88,000
Taxes paid related to net share settlement of RSUs	-114,000
Excess tax short-fall from share-based payment arrangements	-4,395,000	-1,227,000
Net cash provided by financing activities	328,609,000	261,211,000
Increase in cash and cash equivalents	5,329,000	7,910,000
Cash and cash equivalents, beginning of the period	176,830,000	153,747,000
Cash and cash equivalents, end of the period	182,159,000	161,657,000
Cash paid during the period:
Interest	17,370,000	19,533,000
Income taxes paid	11,884,000	12,444,000
Non-cash investing and financing activities:
Net change in unrealized holding gain on securities available-for-sale, net of tax	6,511,000	7,639,000
Net change in unrealized holding loss on interest rate swaps	-1,588,000
Transfers to other real estate owned from loans held for investment	$701,000

Note_1_Business

Note 1 - Business	3 Months Ended
	Mar. 31, 2015
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”), seven 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, 2015, the Bank operated 21 branches in Southern California, 12 branches in Northern California, nine 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 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, 2015
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, 2015. 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, 2014.
	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_Prono

Note 3 - Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	3. Recent Accounting Pronouncements
	In June 2014, the Financial Accounting Standards Board (“FASB”) issued ASU 2014-12, “Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period.” ASU No. 2014-12 requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. An entity should recognize compensation cost in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the periods for which the requisite service has already been rendered. If the performance target becomes probable of being achieved before the end of requisite service period, the remaining unrecognized compensation cost should be recognized prospectively over the remaining requisite service period. The total amount of compensation cost recognized during and after the requisite service period should reflect the number of awards that are expected to vest and should be adjusted to reflect those awards that ultimately vest. ASU 2014-12 becomes effective for interim and annual periods beginning on or after December 15, 2015. Adoption of ASU 2014-12 is not expected to have a significant impact on the Company’s consolidated financial statements.
	ASU 2014-15, “Presentation of Financial Statements-Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern”, issued by the FASB in August 2014, requires an entity’s management to evaluate and disclose conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued.  In addition, an entity’s management is to disclose management’s plans that alleviated or that are intended to mitigate the conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern.  ASU 2014-15 becomes effective for interim and annual periods beginning on or after December 15, 2016.  Adoption of ASU 2014-15 is not expected to have a significant impact on the Company’s consolidated financial statements.
	In February 2015, the FASB issued ASU 2015-02, “Consolidation (Topic 810).” This update requires that limited partnerships or similar legal entities must provide partners with either substantive kick-out rights or substantive participating rights over the general partner to be qualified as voting interest entities (“VIE”). Limited partnerships that qualify as voting interest entities and with a controlling financial interest should consolidate a limited partnership. ASU 2015-02 eliminates the specialized consolidate model and guidance for limited partnerships. There is no longer a presumption that a general partner should consolidate a limited partnership. This update specifies that fees paid to a decision maker are excluded from the evaluation of the economics criterion if the fees are both customary and commensurate with the level of effort required for the services provided. In instances in which no single party has a controlling financial interest in a VIE, related party relationships must be considered indirectly on a proportionate basis, rather than in their entirety. ASU 2015-02 becomes effective for interim and annual periods beginning on or after December 15, 2015.  Adoption of ASU 2015-02 is not expected to have a significant impact on the Company’s consolidated financial statements.
	In April 2015, the FASB issued ASU 2015-03, “Interest- Imputation of Interest (Subtopic 835-30).” This update simplifies the presentation of debt issuance costs and requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. ASU 2015-03 becomes effective for interim and annual periods beginning on or after December 15, 2015.  Adoption of ASU 2015-03 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, 2015
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)	2015		2014
	Net income	$	35,980	$	31,259
	Weighted-average shares:
	Basic weighted-average number of common shares outstanding		79,835,628		79,595,757
	Dilutive effect of weighted-average outstanding common share equivalents
	Warrants		344,919		298,535
	Options		108,457		101,698
	Restricted stock units		20,379		43,392
	Diluted weighted-average number of common shares outstanding		80,309,383		80,039,382
	Average stock options and warrants with anti-dilutive effect		1,670,231		1,985,848
	Earnings per common share:
	Basic	$	0.45	$	0.39
	Diluted	$	0.45	$	0.39

Note_5_StockBased_Compensation

Note 5 - Stock-Based Compensation	3 Months Ended
	Mar. 31, 2015
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, 2015, 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. If such options expire or terminate without having been exercised, any shares not purchased will again be available for future grants or awards. There were no options granted during the first quarter of 2015 or during 2014.
	Option compensation expense was zero for the three months ended March 31, 2015, and for the three months ended March 31, 2014. Stock-based compensation was fully recognized over the requisite service period for all awards. For the first quarter ended March 31, stock options covering 3,750 shares were exercised in 2015 compared to zero in the first quarter of 2014. Cash received totaled $88,000 and the aggregate intrinsic value totaled $10,000 from the exercise of stock options during the first quarter ended March 31, 2015. The table below summarizes stock option activity for the periods indicated:
								Weighted-average
					Weighted-average			Remaining		Aggregate
								Contractual		Intrinsic
		Shares			Exercise Price			Life (in years)		Value (in thousands)
	Balance, December 31, 2014		2,332,904		$	32.34			1.2	$	1,388
	Exercised		(3,750	)		23.37
	Forfeited		(808,670	)		35.63
	Balance, March 31, 2015		1,520,484		$	30.62			1.6	$	3,156
	Exercisable, March 31, 2015		1,520,484		$	30.62			1.6	$	3,156
	In addition to stock options, the Company also grants restricted stock units to eligible employees which vest subject to continued employment at the vesting dates.
	The Company granted restricted stock units of 37,675 shares at an average closing price of $27.53 per share in the first quarter of 2015 compared to 17,601 shares at an average closing price of $24.66 per share in 2014. The restricted stock units granted are scheduled to vest two years from grant date for 2014 grants and to vest three years from grant date for 2015 grants.
	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 next three years. In December 2014, the Company granted performance TSR restricted stock units for 60,456 shares and performance EPS restricted stock units for 57,642 shares to six executive officers. Both the performance TSR and performance EPS units awarded in 2014 are scheduled to vest at December 31, 2017.
	The following table presents restricted stock unit activity from December 31, 2014, to March 31, 2015:
		Units
	Balance at December 31, 2014		386,465
	Granted		37,675
	Vested		(16,709	)
	Forfeited		(7,265	)
	Balance at March 31, 2015		400,166
	The compensation expense recorded for restricted stock units was $1.1 million for the first quarter ended March 31, 2015, compared to $1.0 million in the same period a year ago. Unrecognized stock-based compensation expense related to restricted stock units was $6.5 million at March 31, 2015, and is expected to be recognized over the next 2.3 years.
	At March 31, 2015, 3,562,168 shares were available under the Company’s 2005 Incentive Plan for future grants calculated based on maximum number of earned shares from TSR and EPS restricted stock units.
	The following table summarizes the tax benefit (short-fall) from share-based payment arrangements:
		Three months ended March 31,
	(Dollars in thousands)	2015			2014
	Short-fall of tax deductions in excess of grant-date fair value	$	(4,395	)	$	(1,227	)
	Benefit of tax deductions on grant-date fair value		4,442			1,227
	Total benefit of tax deductions	$	47		$	-

Note_6_Investment_Securities

Note 6 - Investment Securities	3 Months Ended
	Mar. 31, 2015
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 $1.20 billion at March 31, 2015, compared to $1.32 billion at December 31, 2014. The following tables reflect the amortized cost, gross unrealized gains, gross unrealized losses, and fair value of investment securities as of March 31, 2015, and December 31, 2014:
		31-Mar-15
				Gross		Gross
		Amortized		Unrealized		Unrealized
		Cost		Gains		Losses		Fair Value
		(In thousands)
	Securities Available-for-Sale
	U.S. treasury securities	$	349,830	$	353	$	-	$	350,183
	Mortgage-backed securities		756,758		3,904		333		760,329
	Collateralized mortgage obligations		74		-		32		42
	Corporate debt securities		74,946		730		1,165		74,511
	Mutual funds		6,000		-		79		5,921
	Preferred stock of government sponsored entities		6,686		844		3,584		3,946
	Other equity securities		3,628		5,125		3		8,750
	Total	$	1,197,922	$	10,956	$	5,196	$	1,203,682
		31-Dec-14
				Gross		Gross
		Amortized		Unrealized		Unrealized
		Cost		Gains		Losses		Fair Value
		(In thousands)
	Securities Available-for-Sale
	U.S. treasury securities	$	664,206	$	63	$	265	$	664,004
	Mortgage-backed securities		549,296		1,393		6,386		544,303
	Collateralized mortgage obligations		79		-		34		45
	Corporate debt securities		94,943		776		1,247		94,472
	Mutual funds		6,000		-		134		5,866
	Preferred stock of government sponsored entities		6,276		681		3,733		3,224
	Other equity securities		3,608		3,413		-		7,021
	Total	$	1,324,408	$	6,326	$	11,799	$	1,318,935
	The amortized cost and fair value of investment securities at March 31, 2015, 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	$	174,987	$	175,062
	Due after one year through five years		194,247		195,198
	Due after five years through ten years		65,595		65,057
	Due after ten years (1)		763,093		768,365
	Total	$	1,197,922	$	1,203,682
	(1) Equity securities are reported in this category
	Proceeds from sales of mortgage-backed securities were $406.9 million and from repayments, maturities and calls of mortgage-backed securities were $12.1 million during the first quarter of 2015 compared to proceeds from sales of $123.7 million and proceeds of $20.5 million from repayments, maturities, and calls during the same period a year ago. Proceeds from sales of other investment securities were $335.1 million during the first quarter of 2015 compared to $16.0 million during the same period a year ago. Proceeds from maturities and calls of other investment securities were zero during the first quarter of 2015 compared to $112.9 million during the same period a year ago. Gains of $1.7 million and losses of $1.7 million were realized on sales of investment securities during the first quarter of 2015 compared to gains of $6.0 million and losses of $67,000 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, 2015, and December 31, 2014:
		31-Mar-15
		Temporarily impaired securities
		Less than 12 months				12 months or longer				Total
		Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses		Value		Losses
		(Dollars in thousands)
	Securities Available-for-Sale
	Mortgage-backed securities	$	145,297	$	332	$	7	$	1	$	145,304	$	333
	Collateralized mortgage obligations		-		-		41		32		41		32
	Corporate debt securities		-		-		43,835		1,165		43,835		1,165
	Mutual funds		-		-		5,921		79		5,921		79
	Preferred stock of government sponsored entities		2,597		3,584		-		-		2,597		3,584
	Other equity securities		17		3		-		-		17		3
	Total	$	147,911	$	3,919	$	49,804	$	1,277	$	197,715	$	5,196
		31-Dec-14
		Temporarily impaired securities
		Less than 12 months				12 months or longer				Total
		Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses		Value		Losses
		(Dollars in thousands)
	Securities Available-for-Sale
	U.S. treasury securities	$	374,153	$	265	$	-	$	-	$	374,153	$	265
Mortgage-backed securities		-		-		425,090		6,386		425,090		6,386
Collateralized mortgage obligations		-		-		45		34		45		34
Corporate debt securities		-		-		63,753		1,247		63,753		1,247
Mutual funds		-		-		5,866		134		5,866		134
Preferred stock of government sponsored entities		2,448		3,733		-		-		2,448		3,733
Total	$	376,601	$	3,998	$	494,754	$	7,801	$	871,355	$	11,799
At March 31, 2015, management believed the impairment was temporary and, accordingly, no impairment loss on debt 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 $575.5 million at March 31, 2015, and $591.3 million at December 31, 2014, 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, 2015
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; 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 components of loans in the condensed consolidated balance sheets as of March 31, 2015, and December 31, 2014, were as follows:
			31-Mar-15			31-Dec-14
			(In thousands)
	Type of Loans:
	Commercial loans		$	2,434,550		$	2,382,493
	Residential mortgage loans			1,600,269			1,570,059
	Commercial mortgage loans			4,663,051			4,486,443
	Equity lines			175,997			172,879
	Real estate construction loans			345,560			298,654
	Installment and other loans			5,370			3,552
	Gross loans			9,224,797			8,914,080
	Less:
	Allowance for loan losses			(156,089	)		(161,420	)
	Unamortized deferred loan fees			(11,116	)		(12,392	)
	Total loans, net		$	9,057,592		$	8,740,268
	Loans held for sale		$	-		$	973
	At March 31, 2015, recorded investment in impaired loans totaled $180.7 million and was comprised of non-accrual loans of $80.3 million and accruing troubled debt restructured loans (“TDRs) of $100.4 million. At December 31, 2014, recorded investment in impaired loans totaled $174.5 million and was comprised of non-accrual loans of $70.2 million and accruing TDRs of $104.3 million. For impaired loans, the amounts previously charged off represent 17.0% at March 31, 2015, and 17.1% at December 31, 2014, 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						Three months ended
			March 31,						March 31,
			2015			2014			2015			2014
			(In thousands)
	Commercial loans		$	25,426		$	30,844		$	229		$	226
	Real estate construction loans			22,990			34,060			65			65
	Commercial mortgage loans			110,293			111,305			917			1,134
	Residential mortgage loans and equity lines			17,280			19,156			124			95
	Total impaired loans		$	175,989		$	195,365		$	1,335		$	1,520
	The following tables present impaired loans and the related allowance for credit losses as of the dates indicated:
			Impaired Loans
			31-Mar-15									31-Dec-14
			Unpaid Principal Balance			Recorded Investment			Allowance			Unpaid Principal Balance			Recorded Investment			Allowance
			(In thousands)
	With no allocated allowance
	Commercial loans		$	14,176		$	13,148		$	-		$	19,479		$	18,452		$	-
	Real estate construction loans			49,076			22,874			-			32,924			17,025			-
	Commercial mortgage loans			93,468			85,142			-			77,474			75,172			-
	Residential mortgage loans and equity lines			2,496			2,496			-			2,518			2,518			-
	Subtotal		$	159,216		$	123,660		$	-		$	132,395		$	113,167		$	-
	With allocated allowance
	Commercial loans		$	15,677		$	15,660		$	3,911		$	7,003		$	5,037		$	1,263
	Real estate construction loans			-			-			-			19,006			8,703			1,077
	Commercial mortgage loans			27,529			26,581			6,635			38,197			34,022			8,993
	Residential mortgage loans and equity lines			15,393			14,816			498			14,019			13,590			465
	Subtotal		$	58,599		$	57,057		$	11,044		$	78,225		$	61,352		$	11,798
	Total impaired loans		$	217,815		$	180,717		$	11,044		$	210,620		$	174,519		$	11,798
	The following tables present the aging of the loan portfolio by type as of March 31, 2015, and as of December 31, 2014:
			31-Mar-15
			30-59 Days			60-89 Days			90 Days or			Non-accrual Loans			Total Past Due			Loans Not			Total
			Past Due			Past Due			More Past									Past Due
									Due
	Type of Loans:		(In thousands)
	Commercial loans		$	3,530		$	50		$	787		$	12,086		$	16,453		$	2,418,097		$	2,434,550
	Real estate construction loans			-			-			-			17,126			17,126			328,434			345,560
	Commercial mortgage loans			22,041			1,738			-			43,079			66,858			4,596,193			4,663,051
	Residential mortgage loans and equity lines			2,175			-			-			8,033			10,208			1,766,058			1,776,266
	Installment and other loans			-			-			-			-			-			5,370			5,370
	Total loans		$	27,746		$	1,788		$	787		$	80,324		$	110,645		$	9,114,152		$	9,224,797
			31-Dec-14
			30-59 Days			60-89 Days			90 Days or			Non-accrual Loans			Total Past Due			Loans Not			Total
			Past Due			Past Due			More Past									Past Due
									Due
Type of Loans:		(In thousands)
Commercial loans		$	11,595		$	1,238		$	-		$	6,983		$	19,816		$	2,362,677		$	2,382,493
Real estate construction loans			1,416			-			-			19,963			21,379			277,275			298,654
Commercial mortgage loans			17,654			3,909			-			35,606			57,169			4,429,274			4,486,443
Residential mortgage loans and equity lines			5,634			732			-			7,611			13,977			1,728,961			1,742,938
Installment and other loans			60			-			-			-			60			3,492			3,552
Total loans		$	36,359		$	5,879		$	-		$	70,163		$	112,401		$	8,801,679		$	8,914,080
The determination of the amount of the allowance for credit 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 credit losses. The nature of the process by which the Bank determines the appropriate allowance for credit 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.
At March 31, 2015, accruing TDRs were $100.4 million and non-accrual TDRs were $44.5 million compared to accruing TDRs of $104.3 million and non-accrual TDRs of $41.6 million at December 31, 2014. The Company allocated specific reserves of $2.1 million to accruing TDRs and $6.9 million to non-accrual TDRs at March 31, 2015, and $6.5 million to accruing TDRs and $4.9 million to non-accrual TDRs at December 31, 2014. The following tables present TDRs that were modified during the first quarter of 2015 and of 2014, their specific reserves at March 31, 2015, and 2014, and charge-offs during the first quarter of 2015 and of 2014:
		Three months ended March 31, 2015												31-Mar-15
		No. of			Pre-Modification Outstanding			Post-Modification Outstanding Recorded Investment			Charge-offs			Specific Reserve
		Contracts			Recorded Investment
		(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
		Three months ended March 31, 2014												31-Mar-14
		No. of Contracts			Pre-Modification Outstanding Recorded Investment			Post-Modification Outstanding Recorded Investment			Charge-offs			Specific Reserve
		(Dollars in thousands)
Commercial loans			2			8,243			8,243		$	-		$	1,035
Residential mortgage loans and equity lines			2			671			671			-			36
Total			4		$	8,914		$	8,914		$	-		$	1,071
Modifications of the loan terms during the first quarter of 2015 were in the form of changes in the stated interest rate, and/or extension of maturity dates, and/or reduction in monthly payment amount. 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 seven months to two years from the modification date.
We expect that the TDRs on accruing status as of March 31, 2015, 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, 2015, and December 31, 2014, is shown below:
		31-Mar-15
Accruing TDRs		Payment Deferral			Rate						Total
					Reduction			Rate Reduction
								and Payment
								Deferral
		(In thousands)
Commercial loans		$	13,108		$	1,520		$	2,094		$	16,722
Commercial mortgage loans			17,430			6,101			50,861			74,392
Residential mortgage loans			5,233			1,008			3,038			9,279
Total accruing TDRs		$	35,771		$	8,629		$	55,993		$	100,393
		31-Mar-15
Non-accrual TDRs		Payment			Forgiveness of Principal						Total
		Deferral						Rate Reduction
								and Payment
								Deferral
		(In thousands)
Commercial loans		$	2,323		$	1,144		$	-		$	3,467
Commercial mortgage loans			12,344			-			26,834			39,178
Residential mortgage loans			622			-			1,274			1,896
Total non-accrual TDRs		$	15,289		$	1,144		$	28,108		$	44,541
		31-Dec-14
Accruing TDRs		Payment			Rate			Rate Reduction						Total
		Deferral			Reduction			and Forgiveness			Rate Reduction
								of Principal			and Payment
											Deferral
Commercial loans		$	11,572		$	-		$	-		$	4,934		$	16,506
Real estate construction loans			5,765			-			-			-			5,765
Commercial mortgage loans			20,543			26,694			-			26,351			73,588
Residential mortgage loans			3,316			-			410			4,771			8,497
Total accruing TDRs		$	41,196		$	26,694		$	410		$	36,056		$	104,356
		31-Dec-14
Non-accrual TDRs		Payment			Rate						Total
		Deferral			Reduction			Rate Reduction and Payment Deferral
		(In thousands)
Commercial loans		$	1,423		$	860		$	1,269		$	3,552
Real estate construction loans			-			-			19,462			19,462
Commercial mortgage loans			15,917			-			973			16,890
Residential mortgage loans			1,026			-			688			1,714
Total non-accrual TDRs		$	18,366		$	860		$	22,392		$	41,618
The activity within our TDRs for the periods indicated are shown below:
		Three months ended March 31,
Accruing TDRs		2015			2014
		(In thousands)
Beginning balance		$	104,356		$	117,597
New restructurings			10,628			7,375
Restructured loans restored to accrual status			-			962
Charge-offs			(148	)		-
Payments			(4,254	)		(7,012	)
Restructured loans placed on nonaccrual			(10,189	)		-
Ending balance		$	100,393		$	118,922
		Three months ended March 31,
Non-accrual TDRs		2015			2014
		(In thousands)
Beginning balance		$	41,618		$	38,769
New restructurings			209			1,539
Restructured loans placed on nonaccrual			10,189			-
Charge-offs			(2,754	)		(4	)
Payments			(4,721	)		(1,545	)
Restructured loans restored to accrual status			-			(962	)
Ending balance		$	44,541		$	37,797
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 TDRs during the previous twelve months and which subsequently defaulted as of March 31, 2015.  However, the Company took a charge off in the amount of $598,000 on a $10.2 million commercial mortgage loan, which was modified as a TDR during the previous twelve months.  As a result, the Company placed that loan on non-accrual status and the charge off taken was due to a decrease in collateral value based on an updated appraisal report.
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, 2015, 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 – These loans range from minimal credit risk to lower than average, but still acceptable, credit risk.
	●	Special Mention – Borrower is fundamentally sound and loan is currently protected but adverse trends are apparent that, if not corrected, may affect ability to repay. Primary source of loan repayment remains viable but there is increasing reliance on collateral or guarantor support.
	●	Substandard – These loans are inadequately protected by current sound net worth, paying capacity, or collateral. Well-defined weaknesses exist that could jeopardize repayment of debt. Loss may not be imminent, but if weaknesses are not corrected, there is a good possibility of some loss.
	●	Doubtful – The possibility of loss is extremely high, but due to identifiable and important pending events (which may strengthen the loan), a loss classification is deferred until the situation is better defined.
	●	Loss – These loans are considered uncollectible and of such little value that to continue to carry the loan as an active asset is no longer warranted.
The Company had no loans held for sale as of March 31, 2015. The following tables present the loan portfolio by risk rating as of March 31, 2015, and as of December 31, 2014:
		31-Mar-15
		Pass/Watch			Special Mention			Substandard			Doubtful			Total
Commercial loans		$	2,314,983		$	50,083		$	67,662		$	1,822		$	2,434,550
Real estate construction loans			328,434			-			16,626			500			345,560
Commercial mortgage loans			4,375,229			123,384			154,848			9,590			4,663,051
Residential mortgage loans and equity lines			1,765,727			304			10,235			-			1,776,266
Installment and other loans			5,370			-			-			-			5,370
Total gross loans		$	8,789,743		$	173,771		$	249,371		$	11,912		$	9,224,797
		31-Dec-14
		Pass/Watch			Special Mention			Substandard			Doubtful			Total
Commercial loans		$	2,260,474		$	47,619		$	72,561		$	1,839		$	2,382,493
Real estate construction loans			272,927			-			25,227			500			298,654
Commercial mortgage loans			4,213,453			105,970			167,020			-			4,486,443
Residential mortgage loans and equity lines			1,733,248			-			9,690			-			1,742,938
Installment and other loans			3,552			-			-			-			3,552
Total gross loans		$	8,483,654		$	153,589		$	274,498		$	2,339		$	8,914,080
Loans held for sale		$	-		$	-		$	973		$	-		$	973
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, 2015, and as of December 31, 2014:
					Real Estate			Commercial			Residential
		Commercial			Construction			Mortgage			Mortgage Loans			Installment and
		Loans			Loans			Loans			and Equity Lines			Other Loans			Total
		(In thousands)
31-Mar-15
Loans individually evaluated for impairment
Allowance		$	3,911		$	-		$	6,635		$	498		$	-		$	11,044
Balance		$	28,808		$	22,873		$	111,724		$	17,312		$	-		$	180,717
Loans collectively evaluated for impairment
Allowance		$	45,794		$	23,270		$	64,683		$	11,279		$	19		$	145,045
Balance		$	2,405,742		$	322,687		$	4,551,327		$	1,758,954		$	5,370		$	9,044,080
Total allowance		$	49,705		$	23,270		$	71,318		$	11,777		$	19		$	156,089
Total balance		$	2,434,550		$	345,560		$	4,663,051		$	1,776,266		$	5,370		$	9,224,797
31-Dec-14
Loans individually evaluated for impairment
Allowance		$	1,263		$	1,077		$	8,993		$	465		$	-		$	11,798
Balance		$	23,489		$	25,728		$	109,194		$	16,108		$	-		$	174,519
Loans collectively evaluated for impairment
Allowance		$	46,238		$	26,575		$	65,680		$	11,113		$	16		$	149,622
Balance		$	2,359,004		$	272,926		$	4,377,249		$	1,726,830		$	3,552		$	8,739,561
Total allowance		$	47,501		$	27,652		$	74,673		$	11,578		$	16		$	161,420
Total balance		$	2,382,493		$	298,654		$	4,486,443		$	1,742,938		$	3,552		$	8,914,080
The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2015, and March 31, 2014. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.
					Real Estate			Commercial			Residential			Installment
		Commercial			Construction			Mortgage			Mortgage Loans			and Other
		Loans			Loans			Loans			and Equity Lines			Loans			Total
		(In thousands)
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
2014 Beginning Balance		$	65,103		$	11,999		$	84,753		$	12,005		$	29		$	173,889
Provision/(credit) for possible credit losses			4,888			(1,398	)		(4,306	)		447			(2	)		(371	)
Charge-offs			(7,226	)		-			(1,698	)		(78	)		-			(9,002	)
Recoveries			2,017			25			2,577			3			-			4,622
Net (charge-offs)/recoveries			(5,209	)		25			879			(75	)		-			(4,380	)
March 31, 2014 Ending Balance		$	64,782		$	10,626		$	81,326		$	12,377		$	27		$	169,138
Reserve for impaired loans		$	4,663		$	3,129		$	6,165		$	538		$	-		$	14,495
Reserve for non-impaired loans		$	60,119		$	7,497		$	75,161		$	11,839		$	27		$	154,643
Reserve for off-balance sheet credit commitments		$	929		$	326		$	445		$	33		$	1		$	1,734

Note_8_Commitments_and_Conting

Note 8 - Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
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, 2015
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	9. Borrowed Funds
	Securities Sold Under Agreements to Repurchase. Securities sold under agreements to repurchase were $400.0 million with a weighted average rate of 3.89% at March 31, 2015, compared to $450.0 million with a weighted average rate of 3.85% at December 31, 2014. In the first quarter of 2014, the Company prepaid securities sold under agreements to repurchase totaling $100.0 million with a weighted average rate of 3.50% and incurred prepayment penalties of $3.4 million. As of March 31, 2015, four floating-to-fixed rate agreements totaling $200.0 million with weighted average rate of 5.0% and final maturity in January 2017 have initial floating rates for one year, with floating rates of three-month LIBOR rate minus 340 basis points. Thereafter, the rates are fixed for the remainder of the term, with interest rates ranging from 4.89% to 5.07%. As of March, 31, 2015, and December 31, 2014, four fixed rate non-callable securities sold under agreements to repurchase totaled $200.0 million with a weighted average rate of $2.78%. Final maturity for the four fixed rate non-callable securities sold under agreements is $50.0 million in August 2016, $50.0 million in July 2017, $50.0 million in June 2018, and $50.0 million in July 2018.
	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 $467.5 million as of March 31, 2015, and $516.3 million as of December 31, 2014.
	Borrowing from the FHLB. As of March 31, 2015, over-night borrowings from the FHLB were $460.0 million at a rate of 0.24% compared to $400.0 million at a rate of 0.27% at December 31, 2014. As of March 31, 2015, and December 31, 2014, the long-term advance from the FHLB of $25.0 million was at a rate of 1.13% and will mature in March 2018.

Note_10_Income_Taxes

Note 10 - Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	10. Income Taxes
	Income tax expense totaled $21.4 million, or an effective tax rate of 37.3%, for the first quarter of 2015, compared to an income tax expense of $17.9 million, or an effective tax rate of 36.4%, for the same period a year ago. The effective tax rate includes the impact of the utilization of low income housing tax credits for both periods.
	As of December 31, 2014, the Company had income tax refunds receivable of $18.1 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 audits by the Internal Revenue Service back to 2011 and by the California Franchise Tax Board back to 2003. The Company is under audit by the California Franchise Tax Board for the years 2003 to 2007. 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_Measurement

Note 11 - Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Disclosure Text Block [Abstract]
Fair Value, Measurement Inputs, Disclosure [Text Block]	11. 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. For certain actively traded agency preferred stocks, mutual funds, and U.S. Treasury securities, the Company measures the fair value based on quoted market prices in active exchange markets at the reporting date, a Level 1 measurement. The Company also measures securities by using quoted market prices for similar securities or dealer quotes, a Level 2 measurement. This category generally includes U.S. Government agency securities, state and municipal securities, mortgage-backed securities (“MBS”), commercial MBS, collateralized mortgage obligations, asset-backed securities, corporate bonds and trust preferred securities.
	Warrants. The Company measures the fair value of warrants based on unobservable inputs based on assumption and management judgment, a Level 3 measurement.
	Foreign Exchange Contracts. The Company measures the fair value of foreign exchange contracts based on dealer quotes on a recurring basis, a Level 2 measurement.
	Interest Rate Swaps. Fair value of interest rate swaps is derived from third party models with observable market data, a Level 2 measurement.
	The valuation techniques for the assets and liabilities valued on a nonrecurring basis are as follows:
	Impaired Loans. The Company does not record loans at fair value on a recurring basis. However, from time to time, nonrecurring fair value adjustments to collateral dependent impaired loans are recorded based on either the current appraised value of the collateral, a Level 2 measurement, or management’s judgment and estimation of value reported on older appraisals that are then adjusted based on recent market trends, a Level 3 measurement.
	Goodwill. 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 the 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. 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. Core deposit intangibles is initially recorded at fair value based on a valuation of the core deposits acquired and is amortized over its estimated useful life to its residual value in proportion to the economic benefits consumed. The Company assesses the recoverability of this intangible asset on a nonrecurring basis using the core deposits remaining at the assessment date and the fair value of cash flows expected to be generated from the core deposits, a Level 3 measurement.
	Other Real Estate Owned. Real estate acquired in the settlement of loans is initially recorded at fair value based on the appraised value of the property on the date of transfer, less estimated costs to sell, a Level 2 measurement. From time to time, nonrecurring fair value adjustments are made to other real estate owned based on the current updated appraised value of the property, also a Level 2 measurement, or management’s judgment and estimation of value reported on older appraisals that are then adjusted based on recent market trends, a Level 3 measurement.
	Investments in Venture Capital. The Company periodically reviews its investments in venture capital for other-than-temporary impairment on a nonrecurring basis. Investments in venture capital were written down to their fair value based on available financial reports from venture capital partnerships and management’s judgment and estimation, a Level 3 measurement.
	Equity Investments. The Company records equity investments at fair value on a nonrecurring basis based on quoted market prices in active exchange markets at the reporting date, a Level 1 measurement.
	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, 2015, and December 31, 2014:
	31-Mar-15		Fair Value Measurements Using						Total at
			Level 1		Level 2		Level 3		Fair Value
	Assets		(In thousands)
	Securities available-for-sale
	U.S. Treasury securities		$	350,183	$	-	$	-	$	350,183
	Mortgage-backed securities			-		760,329		-		760,329
	Collateralized mortgage obligations			-		42		-		42
	Corporate debt securities			-		74,511		-		74,511
	Mutual funds			5,921		-		-		5,921
	Preferred stock of government sponsored entities			-		3,946		-		3,946
	Other equity securities			-		8,750		-		8,750
	Total securities available-for-sale			356,104		847,578		-		1,203,682
	Warrants			-		-		21		21
	Foreign exchange contracts			-		1,615		-		1,615
	Total assets		$	356,104	$	849,193	$	21	$	1,205,318
	Liabilities
	Interest rate swaps		$	-	$	8,610	$	-	$	8,610
	Foreign exchange contracts			-		4,959		-		4,959
	Total liabilities		$	-	$	13,569	$	-	$	13,569
	31-Dec-14		Fair Value Measurements Using						Total at
			Level 1		Level 2		Level 3		Fair Value
	Assets		(In thousands)
	Securities available-for-sale
	U.S. Treasury securities		$	664,004	$	-	$	-	$	664,004
	Mortgage-backed securities			-		544,303		-		544,303
	Collateralized mortgage obligations			-		45		-		45
	Corporate debt securities			-		94,472		-		94,472
	Mutual funds			5,866		-		-		5,866
	Preferred stock of government sponsored entities			-		3,224		-		3,224
	Other equity securities			-		7,021		-		7,021
	Total securities available-for-sale			669,870		649,065		-		1,318,935
	Warrants			-		-		27		27
	Foreign exchange contracts			-		1,876		-		1,876
	Total assets		$	669,870	$	650,941	$	27	$	1,320,838
	Liabilities
	Interest rate swaps		$	-	$	4,626	$	-	$	4,626
	Foreign exchange contracts			-		5,007		-		5,007
	Total liabilities		$	-	$	9,633	$	-	$	9,633
	The Company measured the fair value of its warrants on a recurring basis using significant unobservable inputs. The fair value of warrants was $21,000 at March 31, 2015, compared to $27,000 at December 31, 2014. The fair value adjustment of warrants was included in other operating income in the first quarter of 2015. 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 5 years, risk-free interest rate from 0.57% to 1.40%, and stock volatility from 10.9% to 15.0%.
	For financial assets measured at fair value on a nonrecurring basis that were still reflected in the condensed consolidated balance sheets at March 31, 2015, 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, 2015, and December 31, 2014, and the total losses/(gains) for the periods indicated:
			31-Mar-15								Total Losses
			Fair Value Measurements Using						Total at		Three Months Ended
			Level 1		Level 2		Level 3		Fair Value		31-Mar-15		31-Mar-14
			(In thousands)
	Assets
	Impaired loans by type:
Commercial loans		$	-	$	-	$	11,749	$	11,749	$	-	$	-
Commercial mortgage loans			-		-		19,947		19,947		56		-
Residential mortgage loans and equity lines			-		-		14,318		14,318		148		-
Total impaired loans			-		-		46,014		46,014		204		-
Other real estate owned (1			-		10,868		4,110		14,978		181		183
Investments in venture capital			-		-		5,371		5,371		224		111
Total assets		$	-	$	10,868	$	55,495	$	66,363	$	609	$	294
(1) Other real estate owned balance of $30.8 million in the condensed consolidated balance sheet is net of estimated disposal costs.
		31-Dec-14								Total Losses / (Gains)
		Fair Value Measurements Using						Total at		Twelve Months Ended
		Level 1		Level 2		Level 3		Fair Value		31-Dec-14		31-Dec-13
		(In thousands)
Assets
Impaired loans by type:
Commercial loans		$	-	$	-	$	3,774	$	3,774	$	17	$	5,731
Commercial mortgage loans			-		-		25,029		25,029		3,914		125
Construction- other			-		-		7,625		7,625		-		-
Residential mortgage loans and equity lines			-		-		13,126		13,126		27		213
Total impaired loans			-		-		49,554		49,554		3,958		6,069
Other real estate owned (1			-		16,458		4,110		20,568		202		(3,134	)
Investments in venture capital			-		-		5,495		5,495		436		409
Equity investments			-		-		617		617		-		-
Total assets		$	-	$	16,458	$	59,776	$	76,234	$	4,596	$	3,344
(1) Other real estate owned balance of $31.5 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_Financia

Note 12 - Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	12. 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. For cash and cash equivalents, the carrying amount was assumed to be a reasonable estimate of fair value, a Level 1 measurement.
	Short-term Investments. For short-term investments, the carrying amount was assumed to be a reasonable estimate of fair value, a Level 1 measurement.
	Securities Purchased under Agreements to Resell. The fair value of securities purchased under agreements to resell is based on dealer quotes, a Level 2 measurement.
	Securities. For securities, including securities held-to-maturity, available-for-sale, and for trading, fair values were based on quoted market prices at the reporting date. If a quoted market price was not available, fair value was estimated using quoted market prices for similar securities or dealer quotes. For certain actively traded agency preferred stocks and U.S. Treasury securities, the Company measures the fair value based on quoted market prices in active exchange markets at the reporting date, a Level 1 measurement. The Company also measures securities by using quoted market prices for similar securities or dealer quotes, a Level 2 measurement. This category generally includes U.S. Government agency securities, state and municipal securities, mortgage-backed securities (“MBS”), commercial MBS, collateralized mortgage obligations, asset-backed securities, and corporate bonds.
	Loans held for sale. The Company records loans held for sale at fair value based on quoted price from third party sources, or appraisal reports adjusted by sales commission assumptions.
	Loans. Fair values were estimated for portfolios of loans with similar financial characteristics. Each loan category was further segmented into fixed and adjustable rate interest terms and by performing and non-performing categories.
	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 of the collateral, a Level 2 measurement.
	Deposit Liabilities. The fair value of demand deposits, savings accounts, and certain money market deposits was assumed to be the amount payable on demand at the reporting date. The fair value of fixed-maturity certificates of deposit was estimated using the rates currently offered for deposits with similar remaining maturities, a Level 3 measurement.
	Securities Sold under Agreements to Repurchase. The fair value of securities sold under agreements to repurchase is based on dealer quotes, a Level 2 measurement.
	Advances from Federal Home Loan Bank (“FHLB”). The fair value of the advances is based on quotes from the FHLB to settle the advances, a Level 2 measurement.
	Other Borrowings. This category includes borrowings from other financial institutions.  The fair value of other borrowings is calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect the credit and interest rate risk, a Level 3 measurement.
	Long-term Debt. The fair value of long-term debt is estimated based on the quoted market prices or dealer quotes, a Level 2 measurement.
	Foreign Exchange Contracts. The Company measures the fair value of foreign exchange contracts based on dealer quotes, a Level 2 measurement.
	Interest Rate Swaps. Fair value of interest rate swaps is derived from third party models with observable market data, a Level 2 measurement.
	Off-Balance-Sheet Financial Instruments. The fair value of commitments to extend credit, standby letters of credit, and financial guarantees written were estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties. The fair value of guarantees and letters of credit was based on fees currently charged for similar agreements or on the estimated cost to terminate them or otherwise settle the obligations with the counterparties at the reporting date. The fair value of off-balance-sheet financial instruments was based on the assumptions that a market participant would use, a Level 3 measurement.
	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 estimated fair value of financial instruments as of March 31, 2015, and as of December 31, 2014:
		31-Mar-15					31-Dec-14
		Carrying					Carrying
		Amount		Fair Value			Amount		Fair Value
		(In thousands)
	Financial Assets
	Cash and due from banks	$	182,159	$	182,159		$	176,830	$	176,830
	Short-term investments		618,726		618,726			489,614		489,614
	Securities available-for-sale		1,203,682		1,203,682			1,318,935		1,318,935
	Loans held for sale		-		-			973		1,225
	Loans, net		9,057,592		9,001,232			8,740,268		8,688,072
	Investment in Federal Home Loan Bank stock		25,000		25,000			30,785		30,785
	Warrants		21		21			27		27
		Notional					Notional
		Amount		Fair Value			Amount		Fair Value
	Foreign exchange contracts	$	127,172	$	1,615		$	167,005	$	1,876
	Financial Liabilities	Carrying					Carrying
		Amount		Fair Value			Amount		Fair Value
	Deposits	$	9,113,250	$	9,114,489		$	8,783,460	$	8,785,342
	Securities sold under agreements to repurchase		400,000		422,161			450,000		473,816
	Advances from Federal Home Loan Bank		485,000		484,983			425,000		424,974
	Other borrowings		22,482		19,396			19,934		17,978
	Long-term debt		119,136		60,020			119,136		59,425
		Notional					Notional
		Amount		Fair Value			Amount		Fair Value
	Foreign exchange contracts	$	158,331	$	4,959		$	178,868	$	5,007
	Interest rate swaps		299,497		8,610			300,480		4,626
		Notional					Notional
		Amount		Fair Value			Amount		Fair Value
	Off-Balance Sheet Financial Instruments
	Commitments to extend credit	$	2,027,773	$	(3,740	)	$	2,071,766	$	(3,442	)
	Standby letters of credit		49,585		(238	)		53,910		(243	)
	Other letters of credit		50,558		(34	)		48,142		(29	)
	Bill of lading guarantees		159		-			108		-
	The following tables present the level in the fair value hierarchy for the estimated fair values of only financial instruments that are not already included on the condensed consolidated balance sheets at fair value as of March 31, 2015, and December 31, 2014.
		31-Mar-15
		Estimated
		Fair Value
		Measurements		Level 1			Level 2		Level 3
		(In thousands)
	Financial Assets
	Cash and due from banks	$	182,159	$	182,159		$	-	$	-
	Short-term investments		618,726		618,726			-		-
	Securities available-for-sale		1,203,682		356,104			847,578		-
	Loans, net		9,001,232		-			-		9,001,232
Investment in Federal Home Loan Bank stock		25,000		-			25,000		-
Warrants		21		-			-		21
Financial Liabilities
Deposits		9,114,489		-			-		9,114,489
Securities sold under agreements to repurchase		422,161		-			422,161		-
Advances from Federal Home Loan Bank		484,983		-			484,983		-
Other borrowings		19,396		-			-		19,396
Long-term debt		60,020		-			60,020		-
	31-Dec-14
	Estimated
	Fair Value
	Measurements		Level 1			Level 2		Level 3
	(In thousands)
Financial Assets
Cash and due from banks	$	176,830	$	176,830		$	-	$	-
Short-term investments		489,614		489,614			-		-
Securities available-for-sale		1,318,935		669,870			649,065		-
Loans held-for-sale		1,225		-			-		1,225
Loans, net		8,688,072		-			-		8,688,072
Investment in Federal Home Loan Bank stock		30,785		-			30,785		-
Warrants		27		-			-		27
Financial Liabilities
Deposits		8,785,342		-			-		8,785,342
Securities sold under agreements to repurchase		473,816		-			473,816		-
Advances from Federal Home Loan Bank		424,974		-			424,974		-
Other borrowings		17,978		-			-		17,978
Long-term debt		59,425		-			59,425		-

Note_13_Goodwill_and_Goodwill_

Note 13 - Goodwill and Goodwill Impairment	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	13. 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.
	At March 31, 2015, 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, 2015
Derivative Instrument Detail [Abstract]
Schedule of Derivative Instruments [Table Text Block]	14.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 five 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 the quarterly interest payments on Bancorp’s $119.1 million of Junior Subordinated Debentures that had been issued to five trusts 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 three-month LIBOR at a weighted average rate of 0.27%. As of March 31, 2015, the notional amount of cash flow interest rate swaps was $119.1 million and their unrealized loss of $4.0 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 $703,000 for the three months ended March 31, 2015, compared to zero for the same quarter a year ago.
	In June 2014, the Bank entered into ten interest rate swap contracts in the notional amount of $148.1 million for various terms from four to eight years. In October 2014, the Bank entered into four additional interest rate swap contracts in the notional amount of $34.9 million. These interest rate swap contracts that 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 4.60% and receives a variable rate at one month LIBOR rate plus a weighted average spread of 292 basis points, or at a weighted average rate of 3.10%. As of March 31, 2015, the notional amount of fair value interest rate swaps was $180.4 million and their unrealized loss of $1.7 million was included in other non-interest income. The amount of periodic net settlement of interest rate swaps reducing interest income was $683,000 for the three months ended March 31, 2015. As of March 31, 2015, 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 $11.4 million as of March 31, 2015.
	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. At March 31, 2015, spot, forward, and swap contracts in the total notional amount of $127.2 million had a positive fair value of $1.6 million. Spot, forward, and swap contracts in the total notional amount of $158.3 million had a negative fair value of $5.0 million at March 31, 2015. At December 31, 2014, spot, forward, and swap contracts in the total notional amount of $167.0 million had a positive fair value of $1.9 million at. Spot, forward, and swap contracts in the total notional amount of $178.9 million had a negative fair value of $5.0 million at December 31, 2014.

Note_15_Balance_Sheet_Offsetti

Note 15 - Balance Sheet Offsetting	3 Months Ended
	Mar. 31, 2015
Disclosure Text Block Supplement [Abstract]
Supplemental Balance Sheet Disclosures [Text Block]	15.Balance Sheet Offsetting
	Certain financial instruments, including resell and repurchase agreements, securities lending arrangements and derivatives, may be eligible for offset in the consolidated balance sheet 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, 2015, and December 31, 2014, are presented in the following table:
								Gross Amounts Not Offset in the Balance Sheet
		Gross Amounts of Recognized		Gross Amounts Offset in the Balance Sheet		Net Amounts Presented in the Balance Sheet		Financial Instruments		Collateral Posted			Net Amount
	31-Mar-15	(In thousands)
	Liabilities:
	Securities sold under agreements to repurchase	$	400,000	$	-	$	400,000	$	-	$	(400,000	)	$	-
	Derivatives	$	8,610	$	-	$	8,610	$	-	$	(8,610	)	$	-
	31-Dec-14
	Liabilities:
	Securities sold under agreements to repurchase	$	450,000	$	-	$	450,000	$	-	$	(450,000	)	$	-
	Derivatives	$	4,626	$	-	$	4,626	$	-	$	(4,626	)	$	-

Note_16_Stockholders_Equity

Note 16 - Stockholders' Equity	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	16.Stockholders’ Equity
	Total equity was $1.63 billion at March 31, 2015, an increase of $31.4 million, or 2.0%, from $1.60 billion at December 31, 2014, primarily due to increases in net income of $36.0 million and increases in other comprehensive income of $4.9 million offset by common stock cash dividends of $8.0 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, 2015, and March 31, 2014, was as follows:
		Three months ended March 31, 2015									Three months ended March 31, 2014
		Pre-tax			Tax			Net-of-tax			Pre-tax			Tax expense/			Net-of-tax
					expense/									(benefit)
					(benefit)
	Beginning balance, loss, net of tax	(In thousands)
	Securities available-for sale							$	(3,172	)							$	(29,729	)
	Cash flow hedge derivatives								(2,397	)								-
	Total							$	(5,569	)							$	(29,729	)
	Net unrealized gains/(losses) arising during the period
	Securities available-for sale	$	11,213		$	4,714		$	6,499		$	19,141		$	8,047		$	11,094
	Cash flow hedge derivatives		(2,740	)		(1,152	)		(1,588	)		-			-			-
	Total		8,473			3,562			4,911			19,141			8,047		$	11,094
	Reclassification adjustment for net losses/(gains) in net income
	Securities available-for sale		21			9			12			(5,961	)		(2,506	)		(3,455	)
	Cash flow hedge derivatives		-			-			-			-			-			-
	Total		21			9			12			(5,961	)		(2,506	)		(3,455	)
	Total other comprehensive income/(loss)
	Securities available-for sale		11,234			4,723			6,511			13,180			5,541			7,639
	Cash flow hedge derivatives		(2,740	)		(1,152	)		(1,588	)		-			-			-
	Total	$	8,494		$	3,571		$	4,923		$	13,180		$	5,541		$	7,639
	Ending balance, income/(loss), net of tax
	Securities available-for sale							$	3,339								$	(22,090	)
	Cash flow hedge derivatives								(3,985	)								-
	Total							$	(646	)							$	(22,090	)

Note_4_Earnings_per_Share_Tabl

Note 4 - Earnings per Share (Tables)	3 Months Ended
	Mar. 31, 2015
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)	2015		2014
	Net income	$	35,980	$	31,259
	Weighted-average shares:
	Basic weighted-average number of common shares outstanding		79,835,628		79,595,757
	Dilutive effect of weighted-average outstanding common share equivalents
	Warrants		344,919		298,535
	Options		108,457		101,698
	Restricted stock units		20,379		43,392
	Diluted weighted-average number of common shares outstanding		80,309,383		80,039,382
	Average stock options and warrants with anti-dilutive effect		1,670,231		1,985,848
	Earnings per common share:
	Basic	$	0.45	$	0.39
	Diluted	$	0.45	$	0.39

Note_5_StockBased_Compensation1

Note 5 - Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]								Weighted-average
					Weighted-average			Remaining		Aggregate
								Contractual		Intrinsic
		Shares			Exercise Price			Life (in years)		Value (in thousands)
	Balance, December 31, 2014		2,332,904		$	32.34			1.2	$	1,388
	Exercised		(3,750	)		23.37
	Forfeited		(808,670	)		35.63
	Balance, March 31, 2015		1,520,484		$	30.62			1.6	$	3,156
	Exercisable, March 31, 2015		1,520,484		$	30.62			1.6	$	3,156
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]		Units
	Balance at December 31, 2014		386,465
	Granted		37,675
	Vested		(16,709	)
	Forfeited		(7,265	)
	Balance at March 31, 2015		400,166
Schedule of Tax Benefit (Short-fall) from Share-based Payment Arrangements [Table Text Block]		Three months ended March 31,
	(Dollars in thousands)	2015			2014
	Short-fall of tax deductions in excess of grant-date fair value	$	(4,395	)	$	(1,227	)
	Benefit of tax deductions on grant-date fair value		4,442			1,227
	Total benefit of tax deductions	$	47		$	-

Note_6_Investment_Securities_T

Note 6 - Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost Gross Unrealized Gains Gross Unrealized Losses and Fair Values of Investment [Table Text Block]		31-Mar-15
				Gross		Gross
		Amortized		Unrealized		Unrealized
		Cost		Gains		Losses		Fair Value
		(In thousands)
	Securities Available-for-Sale
	U.S. treasury securities	$	349,830	$	353	$	-	$	350,183
	Mortgage-backed securities		756,758		3,904		333		760,329
	Collateralized mortgage obligations		74		-		32		42
	Corporate debt securities		74,946		730		1,165		74,511
	Mutual funds		6,000		-		79		5,921
	Preferred stock of government sponsored entities		6,686		844		3,584		3,946
	Other equity securities		3,628		5,125		3		8,750
	Total	$	1,197,922	$	10,956	$	5,196	$	1,203,682
		31-Dec-14
				Gross		Gross
		Amortized		Unrealized		Unrealized
		Cost		Gains		Losses		Fair Value
		(In thousands)
	Securities Available-for-Sale
	U.S. treasury securities	$	664,206	$	63	$	265	$	664,004
	Mortgage-backed securities		549,296		1,393		6,386		544,303
	Collateralized mortgage obligations		79		-		34		45
	Corporate debt securities		94,943		776		1,247		94,472
	Mutual funds		6,000		-		134		5,866
	Preferred stock of government sponsored entities		6,276		681		3,733		3,224
	Other equity securities		3,608		3,413		-		7,021
	Total	$	1,324,408	$	6,326	$	11,799	$	1,318,935
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	$	174,987	$	175,062
	Due after one year through five years		194,247		195,198
	Due after five years through ten years		65,595		65,057
	Due after ten years (1)		763,093		768,365
	Total	$	1,197,922	$	1,203,682
Schedule of Unrealized Loss on Investments [Table Text Block]		31-Mar-15
		Temporarily impaired securities
		Less than 12 months				12 months or longer				Total
		Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses		Value		Losses
		(Dollars in thousands)
	Securities Available-for-Sale
	Mortgage-backed securities	$	145,297	$	332	$	7	$	1	$	145,304	$	333
	Collateralized mortgage obligations		-		-		41		32		41		32
	Corporate debt securities		-		-		43,835		1,165		43,835		1,165
	Mutual funds		-		-		5,921		79		5,921		79
	Preferred stock of government sponsored entities		2,597		3,584		-		-		2,597		3,584
	Other equity securities		17		3		-		-		17		3
	Total	$	147,911	$	3,919	$	49,804	$	1,277	$	197,715	$	5,196
		31-Dec-14
		Temporarily impaired securities
		Less than 12 months				12 months or longer				Total
		Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses		Value		Losses
		(Dollars in thousands)
	Securities Available-for-Sale
	U.S. treasury securities	$	374,153	$	265	$	-	$	-	$	374,153	$	265
	Mortgage-backed securities		-		-		425,090		6,386		425,090		6,386
	Collateralized mortgage obligations		-		-		45		34		45		34
	Corporate debt securities		-		-		63,753		1,247		63,753		1,247
	Mutual funds		-		-		5,866		134		5,866		134
	Preferred stock of government sponsored entities		2,448		3,733		-		-		2,448		3,733
	Total	$	376,601	$	3,998	$	494,754	$	7,801	$	871,355	$	11,799

Note_7_Loans_Tables

Note 7 - Loans (Tables)	3 Months Ended
	Mar. 31, 2015
Note 7 - Loans (Tables) [Line Items]
Schedule of Components of Loans in Consolidated Balance Sheets [Table Text Block]		31-Mar-15			31-Dec-14
		(In thousands)
	Type of Loans:
	Commercial loans	$	2,434,550		$	2,382,493
	Residential mortgage loans		1,600,269			1,570,059
	Commercial mortgage loans		4,663,051			4,486,443
	Equity lines		175,997			172,879
	Real estate construction loans		345,560			298,654
	Installment and other loans		5,370			3,552
	Gross loans		9,224,797			8,914,080
	Less:
	Allowance for loan losses		(156,089	)		(161,420	)
	Unamortized deferred loan fees		(11,116	)		(12,392	)
	Total loans, net	$	9,057,592		$	8,740,268
	Loans held for sale	$	-		$	973
Impaired Financing Receivables [Table Text Block]		Impaired Loans
		Average Recorded Investment						Interest Income Recognized
		Three months ended						Three months ended
		March 31,						March 31,
		2015			2014			2015			2014
		(In thousands)
	Commercial loans	$	25,426		$	30,844		$	229		$	226
	Real estate construction loans		22,990			34,060			65			65
	Commercial mortgage loans		110,293			111,305			917			1,134
	Residential mortgage loans and equity lines		17,280			19,156			124			95
	Total impaired loans	$	175,989		$	195,365		$	1,335		$	1,520
Schedule of Impaired Loans and Related Allowance and Charge-off [Table Text Block]		Impaired Loans
		31-Mar-15									31-Dec-14
		Unpaid Principal Balance			Recorded Investment			Allowance			Unpaid Principal Balance			Recorded Investment			Allowance
		(In thousands)
	With no allocated allowance
	Commercial loans	$	14,176		$	13,148		$	-		$	19,479		$	18,452		$	-
	Real estate construction loans		49,076			22,874			-			32,924			17,025			-
	Commercial mortgage loans		93,468			85,142			-			77,474			75,172			-
	Residential mortgage loans and equity lines		2,496			2,496			-			2,518			2,518			-
	Subtotal	$	159,216		$	123,660		$	-		$	132,395		$	113,167		$	-
	With allocated allowance
	Commercial loans	$	15,677		$	15,660		$	3,911		$	7,003		$	5,037		$	1,263
	Real estate construction loans		-			-			-			19,006			8,703			1,077
	Commercial mortgage loans		27,529			26,581			6,635			38,197			34,022			8,993
	Residential mortgage loans and equity lines		15,393			14,816			498			14,019			13,590			465
	Subtotal	$	58,599		$	57,057		$	11,044		$	78,225		$	61,352		$	11,798
	Total impaired loans	$	217,815		$	180,717		$	11,044		$	210,620		$	174,519		$	11,798
Past Due Financing Receivables [Table Text Block]		31-Mar-15
		30-59 Days			60-89 Days			90 Days or			Non-accrual Loans			Total Past Due			Loans Not			Total
		Past Due			Past Due			More Past									Past Due
								Due
	Type of Loans:	(In thousands)
	Commercial loans	$	3,530		$	50		$	787		$	12,086		$	16,453		$	2,418,097		$	2,434,550
	Real estate construction loans		-			-			-			17,126			17,126			328,434			345,560
	Commercial mortgage loans		22,041			1,738			-			43,079			66,858			4,596,193			4,663,051
	Residential mortgage loans and equity lines		2,175			-			-			8,033			10,208			1,766,058			1,776,266
	Installment and other loans		-			-			-			-			-			5,370			5,370
	Total loans	$	27,746		$	1,788		$	787		$	80,324		$	110,645		$	9,114,152		$	9,224,797
		31-Dec-14
		30-59 Days			60-89 Days			90 Days or			Non-accrual Loans			Total Past Due			Loans Not			Total
		Past Due			Past Due			More Past									Past Due
								Due
	Type of Loans:	(In thousands)
	Commercial loans	$	11,595		$	1,238		$	-		$	6,983		$	19,816		$	2,362,677		$	2,382,493
	Real estate construction loans		1,416			-			-			19,963			21,379			277,275			298,654
	Commercial mortgage loans		17,654			3,909			-			35,606			57,169			4,429,274			4,486,443
	Residential mortgage loans and equity lines		5,634			732			-			7,611			13,977			1,728,961			1,742,938
	Installment and other loans		60			-			-			-			60			3,492			3,552
	Total loans	$	36,359		$	5,879		$	-		$	70,163		$	112,401		$	8,801,679		$	8,914,080
Schedule of Troubled Debt Restructurings [Table Text Block]		Three months ended March 31, 2015												31-Mar-15
		No. of			Pre-Modification Outstanding			Post-Modification Outstanding Recorded Investment			Charge-offs			Specific Reserve
		Contracts			Recorded Investment
		(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
		Three months ended March 31, 2014												31-Mar-14
		No. of Contracts			Pre-Modification Outstanding Recorded Investment			Post-Modification Outstanding Recorded Investment			Charge-offs			Specific Reserve
		(Dollars in thousands)
	Commercial loans		2			8,243			8,243		$	-		$	1,035
	Residential mortgage loans and equity lines		2			671			671			-			36
	Total		4		$	8,914		$	8,914		$	-		$	1,071
Troubled Debt Restructurings on Financing Receivables [Table Text Block]		31-Mar-15
	Accruing TDRs	Payment Deferral			Rate						Total
					Reduction			Rate Reduction
								and Payment
								Deferral
		(In thousands)
	Commercial loans	$	13,108		$	1,520		$	2,094		$	16,722
	Commercial mortgage loans		17,430			6,101			50,861			74,392
	Residential mortgage loans		5,233			1,008			3,038			9,279
	Total accruing TDRs	$	35,771		$	8,629		$	55,993		$	100,393
		31-Dec-14
	Accruing TDRs	Payment			Rate			Rate Reduction						Total
		Deferral			Reduction			and Forgiveness			Rate Reduction
								of Principal			and Payment
											Deferral
	Commercial loans	$	11,572		$	-		$	-		$	4,934		$	16,506
	Real estate construction loans		5,765			-			-			-			5,765
	Commercial mortgage loans		20,543			26,694			-			26,351			73,588
	Residential mortgage loans		3,316			-			410			4,771			8,497
	Total accruing TDRs	$	41,196		$	26,694		$	410		$	36,056		$	104,356
Non Accrual Troubled Debt Restructurings [Table Text Block]		31-Mar-15
	Non-accrual TDRs	Payment			Forgiveness of Principal						Total
		Deferral						Rate Reduction
								and Payment
								Deferral
		(In thousands)
	Commercial loans	$	2,323		$	1,144		$	-		$	3,467
	Commercial mortgage loans		12,344			-			26,834			39,178
	Residential mortgage loans		622			-			1,274			1,896
	Total non-accrual TDRs	$	15,289		$	1,144		$	28,108		$	44,541
		31-Dec-14
	Non-accrual TDRs	Payment			Rate						Total
		Deferral			Reduction			Rate Reduction and Payment Deferral
		(In thousands)
	Commercial loans	$	1,423		$	860		$	1,269		$	3,552
	Real estate construction loans		-			-			19,462			19,462
	Commercial mortgage loans		15,917			-			973			16,890
	Residential mortgage loans		1,026			-			688			1,714
	Total non-accrual TDRs	$	18,366		$	860		$	22,392		$	41,618
Activity Within the Troubled Debt Resturings [Table Text Block]		Three months ended March 31,
	Accruing TDRs	2015			2014
		(In thousands)
	Beginning balance	$	104,356		$	117,597
	New restructurings		10,628			7,375
	Restructured loans restored to accrual status		-			962
	Charge-offs		(148	)		-
	Payments		(4,254	)		(7,012	)
	Restructured loans placed on nonaccrual		(10,189	)		-
	Ending balance	$	100,393		$	118,922
		Three months ended March 31,
	Non-accrual TDRs	2015			2014
		(In thousands)
	Beginning balance	$	41,618		$	38,769
	New restructurings		209			1,539
	Restructured loans placed on nonaccrual		10,189			-
	Charge-offs		(2,754	)		(4	)
	Payments		(4,721	)		(1,545	)
	Restructured loans restored to accrual status		-			(962	)
	Ending balance	$	44,541		$	37,797
Financing Receivable Credit Quality Indicators [Table Text Block]		31-Mar-15
		Pass/Watch			Special Mention			Substandard			Doubtful			Total
	Commercial loans	$	2,314,983		$	50,083		$	67,662		$	1,822		$	2,434,550
	Real estate construction loans		328,434			-			16,626			500			345,560
	Commercial mortgage loans		4,375,229			123,384			154,848			9,590			4,663,051
	Residential mortgage loans and equity lines		1,765,727			304			10,235			-			1,776,266
	Installment and other loans		5,370			-			-			-			5,370
	Total gross loans	$	8,789,743		$	173,771		$	249,371		$	11,912		$	9,224,797
		31-Dec-14
		Pass/Watch			Special Mention			Substandard			Doubtful			Total
	Commercial loans	$	2,260,474		$	47,619		$	72,561		$	1,839		$	2,382,493
	Real estate construction loans		272,927			-			25,227			500			298,654
	Commercial mortgage loans		4,213,453			105,970			167,020			-			4,486,443
	Residential mortgage loans and equity lines		1,733,248			-			9,690			-			1,742,938
	Installment and other loans		3,552			-			-			-			3,552
	Total gross loans	$	8,483,654		$	153,589		$	274,498		$	2,339		$	8,914,080
	Loans held for sale	$	-		$	-		$	973		$	-		$	973
Allowance for Credit Losses on Financing Receivables [Table Text Block]					Real Estate			Commercial			Residential			Installment
		Commercial			Construction			Mortgage			Mortgage Loans			and Other
		Loans			Loans			Loans			and Equity Lines			Loans			Total
		(In thousands)
	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
	2014 Beginning Balance	$	65,103		$	11,999		$	84,753		$	12,005		$	29		$	173,889
	Provision/(credit) for possible credit losses		4,888			(1,398	)		(4,306	)		447			(2	)		(371	)
	Charge-offs		(7,226	)		-			(1,698	)		(78	)		-			(9,002	)
	Recoveries		2,017			25			2,577			3			-			4,622
	Net (charge-offs)/recoveries		(5,209	)		25			879			(75	)		-			(4,380	)
	March 31, 2014 Ending Balance	$	64,782		$	10,626		$	81,326		$	12,377		$	27		$	169,138
	Reserve for impaired loans	$	4,663		$	3,129		$	6,165		$	538		$	-		$	14,495
	Reserve for non-impaired loans	$	60,119		$	7,497		$	75,161		$	11,839		$	27		$	154,643
	Reserve for off-balance sheet credit commitments	$	929		$	326		$	445		$	33		$	1		$	1,734
Impairment Method [Member]
Note 7 - Loans (Tables) [Line Items]
Impaired Financing Receivables [Table Text Block]					Real Estate			Commercial			Residential
		Commercial			Construction			Mortgage			Mortgage Loans			Installment and
		Loans			Loans			Loans			and Equity Lines			Other Loans			Total
		(In thousands)
	31-Mar-15
	Loans individually evaluated for impairment
	Allowance	$	3,911		$	-		$	6,635		$	498		$	-		$	11,044
	Balance	$	28,808		$	22,873		$	111,724		$	17,312		$	-		$	180,717
	Loans collectively evaluated for impairment
	Allowance	$	45,794		$	23,270		$	64,683		$	11,279		$	19		$	145,045
	Balance	$	2,405,742		$	322,687		$	4,551,327		$	1,758,954		$	5,370		$	9,044,080
	Total allowance	$	49,705		$	23,270		$	71,318		$	11,777		$	19		$	156,089
	Total balance	$	2,434,550		$	345,560		$	4,663,051		$	1,776,266		$	5,370		$	9,224,797
	31-Dec-14
	Loans individually evaluated for impairment
	Allowance	$	1,263		$	1,077		$	8,993		$	465		$	-		$	11,798
	Balance	$	23,489		$	25,728		$	109,194		$	16,108		$	-		$	174,519
	Loans collectively evaluated for impairment
	Allowance	$	46,238		$	26,575		$	65,680		$	11,113		$	16		$	149,622
	Balance	$	2,359,004		$	272,926		$	4,377,249		$	1,726,830		$	3,552		$	8,739,561
	Total allowance	$	47,501		$	27,652		$	74,673		$	11,578		$	16		$	161,420
	Total balance	$	2,382,493		$	298,654		$	4,486,443		$	1,742,938		$	3,552		$	8,914,080

Note_11_Fair_Value_Measurement1

Note 11 - Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure Text Block [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	31-Mar-15	Fair Value Measurements Using						Total at
		Level 1		Level 2		Level 3		Fair Value
	Assets	(In thousands)
	Securities available-for-sale
	U.S. Treasury securities	$	350,183	$	-	$	-	$	350,183
	Mortgage-backed securities		-		760,329		-		760,329
	Collateralized mortgage obligations		-		42		-		42
	Corporate debt securities		-		74,511		-		74,511
	Mutual funds		5,921		-		-		5,921
	Preferred stock of government sponsored entities		-		3,946		-		3,946
	Other equity securities		-		8,750		-		8,750
	Total securities available-for-sale		356,104		847,578		-		1,203,682
	Warrants		-		-		21		21
	Foreign exchange contracts		-		1,615		-		1,615
	Total assets	$	356,104	$	849,193	$	21	$	1,205,318
	Liabilities
	Interest rate swaps	$	-	$	8,610	$	-	$	8,610
	Foreign exchange contracts		-		4,959		-		4,959
	Total liabilities	$	-	$	13,569	$	-	$	13,569
	31-Dec-14	Fair Value Measurements Using						Total at
		Level 1		Level 2		Level 3		Fair Value
	Assets	(In thousands)
	Securities available-for-sale
	U.S. Treasury securities	$	664,004	$	-	$	-	$	664,004
	Mortgage-backed securities		-		544,303		-		544,303
	Collateralized mortgage obligations		-		45		-		45
	Corporate debt securities		-		94,472		-		94,472
	Mutual funds		5,866		-		-		5,866
	Preferred stock of government sponsored entities		-		3,224		-		3,224
	Other equity securities		-		7,021		-		7,021
	Total securities available-for-sale		669,870		649,065		-		1,318,935
	Warrants		-		-		27		27
	Foreign exchange contracts		-		1,876		-		1,876
	Total assets	$	669,870	$	650,941	$	27	$	1,320,838
	Liabilities
	Interest rate swaps	$	-	$	4,626	$	-	$	4,626
	Foreign exchange contracts		-		5,007		-		5,007
	Total liabilities	$	-	$	9,633	$	-	$	9,633
Fair Value Measurements, Nonrecurring [Table Text Block]		31-Mar-15								Total Losses
		Fair Value Measurements Using						Total at		Three Months Ended
		Level 1		Level 2		Level 3		Fair Value		31-Mar-15		31-Mar-14
		(In thousands)
	Assets
	Impaired loans by type:
	Commercial loans	$	-	$	-	$	11,749	$	11,749	$	-	$	-
	Commercial mortgage loans		-		-		19,947		19,947		56		-
	Residential mortgage loans and equity lines		-		-		14,318		14,318		148		-
	Total impaired loans		-		-		46,014		46,014		204		-
	Other real estate owned (1		-		10,868		4,110		14,978		181		183
	Investments in venture capital		-		-		5,371		5,371		224		111
	Total assets	$	-	$	10,868	$	55,495	$	66,363	$	609	$	294
		31-Dec-14								Total Losses / (Gains)
		Fair Value Measurements Using						Total at		Twelve Months Ended
		Level 1		Level 2		Level 3		Fair Value		31-Dec-14		31-Dec-13
		(In thousands)
	Assets
	Impaired loans by type:
	Commercial loans	$	-	$	-	$	3,774	$	3,774	$	17	$	5,731
	Commercial mortgage loans		-		-		25,029		25,029		3,914		125
	Construction- other		-		-		7,625		7,625		-		-
	Residential mortgage loans and equity lines		-		-		13,126		13,126		27		213
	Total impaired loans		-		-		49,554		49,554		3,958		6,069
	Other real estate owned (1		-		16,458		4,110		20,568		202		(3,134	)
	Investments in venture capital		-		-		5,495		5,495		436		409
	Equity investments		-		-		617		617		-		-
	Total assets	$	-	$	16,458	$	59,776	$	76,234	$	4,596	$	3,344

Note_12_Fair_Value_of_Financia1

Note 12 - Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping [Table Text Block]		31-Mar-15					31-Dec-14
		Carrying					Carrying
		Amount		Fair Value			Amount		Fair Value
		(In thousands)
	Financial Assets
	Cash and due from banks	$	182,159	$	182,159		$	176,830	$	176,830
	Short-term investments		618,726		618,726			489,614		489,614
	Securities available-for-sale		1,203,682		1,203,682			1,318,935		1,318,935
	Loans held for sale		-		-			973		1,225
	Loans, net		9,057,592		9,001,232			8,740,268		8,688,072
	Investment in Federal Home Loan Bank stock		25,000		25,000			30,785		30,785
	Warrants		21		21			27		27
		Notional					Notional
		Amount		Fair Value			Amount		Fair Value
	Foreign exchange contracts	$	127,172	$	1,615		$	167,005	$	1,876
	Financial Liabilities	Carrying					Carrying
		Amount		Fair Value			Amount		Fair Value
	Deposits	$	9,113,250	$	9,114,489		$	8,783,460	$	8,785,342
	Securities sold under agreements to repurchase		400,000		422,161			450,000		473,816
	Advances from Federal Home Loan Bank		485,000		484,983			425,000		424,974
	Other borrowings		22,482		19,396			19,934		17,978
	Long-term debt		119,136		60,020			119,136		59,425
		Notional					Notional
		Amount		Fair Value			Amount		Fair Value
	Foreign exchange contracts	$	158,331	$	4,959		$	178,868	$	5,007
	Interest rate swaps		299,497		8,610			300,480		4,626
		Notional					Notional
		Amount		Fair Value			Amount		Fair Value
	Off-Balance Sheet Financial Instruments
	Commitments to extend credit	$	2,027,773	$	(3,740	)	$	2,071,766	$	(3,442	)
	Standby letters of credit		49,585		(238	)		53,910		(243	)
	Other letters of credit		50,558		(34	)		48,142		(29	)
	Bill of lading guarantees		159		-			108		-
Schedule of Fair Value of Financial Instruments [Table Text Block]		31-Mar-15
		Estimated
		Fair Value
		Measurements		Level 1			Level 2		Level 3
		(In thousands)
	Financial Assets
	Cash and due from banks	$	182,159	$	182,159		$	-	$	-
	Short-term investments		618,726		618,726			-		-
	Securities available-for-sale		1,203,682		356,104			847,578		-
	Loans, net		9,001,232		-			-		9,001,232
	Investment in Federal Home Loan Bank stock		25,000		-			25,000		-
	Warrants		21		-			-		21
	Financial Liabilities
	Deposits		9,114,489		-			-		9,114,489
	Securities sold under agreements to repurchase		422,161		-			422,161		-
	Advances from Federal Home Loan Bank		484,983		-			484,983		-
	Other borrowings		19,396		-			-		19,396
	Long-term debt		60,020		-			60,020		-
		31-Dec-14
		Estimated
		Fair Value
		Measurements		Level 1			Level 2		Level 3
		(In thousands)
	Financial Assets
	Cash and due from banks	$	176,830	$	176,830		$	-	$	-
	Short-term investments		489,614		489,614			-		-
	Securities available-for-sale		1,318,935		669,870			649,065		-
	Loans held-for-sale		1,225		-			-		1,225
	Loans, net		8,688,072		-			-		8,688,072
	Investment in Federal Home Loan Bank stock		30,785		-			30,785		-
	Warrants		27		-			-		27
	Financial Liabilities
	Deposits		8,785,342		-			-		8,785,342
	Securities sold under agreements to repurchase		473,816		-			473,816		-
	Advances from Federal Home Loan Bank		424,974		-			424,974		-
	Other borrowings		17,978		-			-		17,978
	Long-term debt		59,425		-			59,425		-

Note_15_Balance_Sheet_Offsetti1

Note 15 - Balance Sheet Offsetting (Tables)	3 Months Ended
	Mar. 31, 2015
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 of Recognized		Gross Amounts Offset in the Balance Sheet		Net Amounts Presented in the Balance Sheet		Financial Instruments		Collateral Posted			Net Amount
	31-Mar-15	(In thousands)
	Liabilities:
	Securities sold under agreements to repurchase	$	400,000	$	-	$	400,000	$	-	$	(400,000	)	$	-
	Derivatives	$	8,610	$	-	$	8,610	$	-	$	(8,610	)	$	-
	31-Dec-14
	Liabilities:
	Securities sold under agreements to repurchase	$	450,000	$	-	$	450,000	$	-	$	(450,000	)	$	-
	Derivatives	$	4,626	$	-	$	4,626	$	-	$	(4,626	)	$	-

Note_16_Stockholders_Equity_Ta

Note 16 - Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity Note [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]		Three months ended March 31, 2015									Three months ended March 31, 2014
		Pre-tax			Tax			Net-of-tax			Pre-tax			Tax expense/			Net-of-tax
					expense/									(benefit)
					(benefit)
	Beginning balance, loss, net of tax	(In thousands)
	Securities available-for sale							$	(3,172	)							$	(29,729	)
	Cash flow hedge derivatives								(2,397	)								-
	Total							$	(5,569	)							$	(29,729	)
	Net unrealized gains/(losses) arising during the period
	Securities available-for sale	$	11,213		$	4,714		$	6,499		$	19,141		$	8,047		$	11,094
	Cash flow hedge derivatives		(2,740	)		(1,152	)		(1,588	)		-			-			-
	Total		8,473			3,562			4,911			19,141			8,047		$	11,094
	Reclassification adjustment for net losses/(gains) in net income
	Securities available-for sale		21			9			12			(5,961	)		(2,506	)		(3,455	)
	Cash flow hedge derivatives		-			-			-			-			-			-
	Total		21			9			12			(5,961	)		(2,506	)		(3,455	)
	Total other comprehensive income/(loss)
	Securities available-for sale		11,234			4,723			6,511			13,180			5,541			7,639
	Cash flow hedge derivatives		(2,740	)		(1,152	)		(1,588	)		-			-			-
	Total	$	8,494		$	3,571		$	4,923		$	13,180		$	5,541		$	7,639
	Ending balance, income/(loss), net of tax
	Securities available-for sale							$	3,339								$	(22,090	)
	Cash flow hedge derivatives								(3,985	)								-
	Total							$	(646	)							$	(22,090	)

Note_1_Business_Details

Note 1 - Business (Details)	Mar. 31, 2015
Note 1 - Business (Details) [Line Items]
Number of Limited Partnerships in Housing Investments	7
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	9
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
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_Deta

Note 4 - Earnings per Share (Details) - Earnings per Share (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Note 4 - Earnings per Share (Details) - Earnings per Share [Line Items]
Net income (in Dollars)	$35,980	$31,259
Basic weighted-average number of common shares outstanding	79,835,628	79,595,757
Dilutive effect of weighted-average outstanding common share equivalents
Diluted weighted-average number of common shares outstanding	80,309,383	80,039,382
Average stock options and warrants with anti-dilutive effect	1,670,231	1,985,848
Basic (in Dollars per share)	$0.45	$0.39
Diluted (in Dollars per share)	$0.45	$0.39
Warrant [Member]
Dilutive effect of weighted-average outstanding common share equivalents
Dilutive effect of weighted-average outstanding common share equivalents	344,919	298,535
Equity Option [Member]
Dilutive effect of weighted-average outstanding common share equivalents
Dilutive effect of weighted-average outstanding common share equivalents	108,457	101,698
Restricted Stock Units (RSUs) [Member]
Dilutive effect of weighted-average outstanding common share equivalents
Dilutive effect of weighted-average outstanding common share equivalents	20,379	43,392

Note_5_StockBased_Compensation2

Note 5 - Stock-Based Compensation (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
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		0
Allocated Share-based Compensation Expense (in Dollars)	$0	$0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	3,750	0
Proceeds from Stock Options Exercised (in Dollars)	88,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars)	10,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	37,675
Shares Available for Future Grant Calculated Based On Maximum of Earned Shares from TSR & EPS RSU	3,562,168
Restricted Stock Units (RSUs) [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	37,675	17,601
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)	$27.53	$24.66
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years	2 years
Stock or Unit Option Plan Expense (in Dollars)	1,100,000	1,000,000
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 109 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			60,456
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			57,642

Note_5_StockBased_Compensation3

Note 5 - Stock-Based Compensation (Details) - Stock Options (USD $)	0 Months Ended	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Stock Options [Abstract]
Balance, Shares	2,332,904	1,520,484
Balance, Weighted-average exercise price	$32.34	$30.62
Balance, Weighted-average Remaining Contractual Life	1 year 73 days	1 year 219 days
Balance, Aggregate Intrinsic Value	$1,388	$3,156
Exercisable, March 31, 2015		1,520,484
Exercisable, March 31, 2015		$30.62
Exercisable, March 31, 2015		1 year 219 days
Exercisable, March 31, 2015		$3,156
Exercised		-3,750	0
Exercised		$23.37
Forfeited		-808,670
Forfeited		$35.63

Note_5_StockBased_Compensation4

Note 5 - Stock-Based Compensation (Details) - Restricted Stock Units	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Restricted Stock Units [Abstract]
Balance at	400,166	386,465
Granted	37,675
Vested	-16,709
Forfeited	-7,265

Note_5_StockBased_Compensation5

Note 5 - Stock-Based Compensation (Details) - Tax Short-fall from Share-based Payment Arrangements (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Tax Short-fall from Share-based Payment Arrangements [Abstract]
Short-fall of tax deductions in excess of grant-date fair value	($4,395)	($1,227)
Benefit of tax deductions on grant-date fair value	4,442	1,227
Total benefit of tax deductions	$47

Note_6_Investment_Securities_D

Note 6 - Investment Securities (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities	$1,203,682,000		$1,318,935,000
Investment Securities			1,320,000,000
Proceeds from Sale of Mortgage Backed Securities (MBS) categorized as Available-for-sale	406,900,000	123,700,000
Proceeds from Maturities, Prepayments and Calls of Mortgage Backed Securities (MBS)	12,100,000	20,500,000
Proceeds from Sales and Repayments of Other Investment Securities	335,100,000	16,000,000
Proceeds from Maturities Repayments and Calls of Other Investment Securities	0	112,900,000
Realized Gain from Sale and Call of Investment Securities	1,700,000	6,000,000
Realized Loss from Sale and Call of Investment Securities	1,700,000	67,000
Pledged Investment Securities	$575,500,000		$591,300,000

Note_6_Investment_Securities_D1

Note 6 - Investment Securities (Details) - Investment Securities (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Securities Available-for-Sale
Securities available-for-sale, amortized cost	$1,197,922	$1,324,408
Securities available-for-sale, gross unrealized gains	10,956	6,326
Securities available-for-sale, gross unrealized losses	5,196	11,799
Securities available-for-sale	1,203,682	1,318,935
US Treasury Securities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	349,830	664,206
Securities available-for-sale, gross unrealized gains	353	63
Securities available-for-sale, gross unrealized losses		265
Securities available-for-sale	350,183	664,004
Collateralized Mortgage Backed Securities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	756,758	549,296
Securities available-for-sale, gross unrealized gains	3,904	1,393
Securities available-for-sale, gross unrealized losses	333	6,386
Securities available-for-sale	760,329	544,303
Collateralized Mortgage Obligations [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	74	79
Securities available-for-sale, gross unrealized losses	32	34
Securities available-for-sale	42	45
Corporate Debt Securities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	74,946	94,943
Securities available-for-sale, gross unrealized gains	730	776
Securities available-for-sale, gross unrealized losses	1,165	1,247
Securities available-for-sale	74,511	94,472
Mutual Funds [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	6,000	6,000
Securities available-for-sale, gross unrealized losses	79	134
Securities available-for-sale	5,921	5,866
Preferred Stock of Government Sponsored Entities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	6,686	6,276
Securities available-for-sale, gross unrealized gains	844	681
Securities available-for-sale, gross unrealized losses	3,584	3,733
Securities available-for-sale	3,946	3,224
Other Equity Securities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost	3,628
Securities available-for-sale, gross unrealized gains	5,125
Securities available-for-sale, gross unrealized losses	3
Securities available-for-sale	8,750	7,021
Asset-backed Securities [Member]
Securities Available-for-Sale
Securities available-for-sale, amortized cost		3,608
Securities available-for-sale, gross unrealized gains		3,413
Securities available-for-sale		$7,021

Note_6_Investment_Securities_D2

Note 6 - Investment Securities (Details) - Investments by Contractual Maturity Date (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Investments by Contractual Maturity Date [Abstract]
Due in one year or less	$174,987
Due in one year or less	175,062
Due after one year through five years	194,247
Due after one year through five years	195,198
Due after five years through ten years	65,595
Due after five years through ten years	65,057
Due after ten years (1)	763,093	[1]
Due after ten years (1)	768,365	[1]
Total	1,197,922		1,324,408
Total	$1,203,682		$1,318,935
[1]	Equity securities are reported in this category

Note_6_Investment_Securities_D3

Note 6 - Investment Securities (Details) - Temporarily Impaired Securities (USD $)	Mar. 31, 2015	Dec. 31, 2014
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value	$147,911,000	$376,601,000
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses	3,919,000	3,998,000
Securities Available-for-Sale - 12 Months or longer - Fair Value	49,804	494,754
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses	1,277,000	7,801,000
Securities Available-for-Sale - Fair Value	197,715,000	871,355,000
Securities Available-for-Sale - Unrealized Losses	5,196	11,799
Collateralized Mortgage Backed Securities [Member]
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value	145,297,000
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses	332,000
Securities Available-for-Sale - 12 Months or longer - Fair Value	7
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses	1,000
Securities Available-for-Sale - Fair Value	145,304,000
Securities Available-for-Sale - Unrealized Losses	333
Collateralized Mortgage Obligations [Member]
Securities Available-for-Sale
Securities Available-for-Sale - 12 Months or longer - Fair Value	41	45
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses	32,000	34,000
Securities Available-for-Sale - Fair Value	41,000	45,000
Securities Available-for-Sale - Unrealized Losses	32	34
Corporate Debt Securities [Member]
Securities Available-for-Sale
Securities Available-for-Sale - 12 Months or longer - Fair Value	43,835	63,753
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses	1,165,000	1,247,000
Securities Available-for-Sale - Fair Value	43,835,000	63,753,000
Securities Available-for-Sale - Unrealized Losses	1,165	1,247
Mutual Funds [Member]
Securities Available-for-Sale
Securities Available-for-Sale - 12 Months or longer - Fair Value	5,921	5,866
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses	79,000	134,000
Securities Available-for-Sale - Fair Value	5,921,000	5,866,000
Securities Available-for-Sale - Unrealized Losses	79	134
Preferred Stock of Government Sponsored Entities [Member]
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value	2,597,000	2,448,000
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses	3,584,000	3,733,000
Securities Available-for-Sale - Fair Value	2,597,000	2,448,000
Securities Available-for-Sale - Unrealized Losses	3,584	3,733
Other Equity Securities [Member]
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value	17,000
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses	3,000
Securities Available-for-Sale - Fair Value	17,000
Securities Available-for-Sale - Unrealized Losses	3
US Treasury Securities [Member]
Securities Available-for-Sale
Securities Available-for-Sale - Less than 12 Months - Fair Value		374,153,000
Securities Available-for-Sale - Less than 12 Months - Unrealized Losses		265,000
Securities Available-for-Sale - Fair Value		374,153,000
Securities Available-for-Sale - Unrealized Losses		265
Mortgage Backed Securities Non Agency [Member]
Securities Available-for-Sale
Securities Available-for-Sale - 12 Months or longer - Fair Value		425,090
Securities Available-for-Sale - 12 Months or longer - Unrealized Losses		6,386,000
Securities Available-for-Sale - Fair Value		425,090,000
Securities Available-for-Sale - Unrealized Losses		$6,386

Note_7_Loans_Details

Note 7 - Loans (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Note 7 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	$180,717,000	$174,519,000
Percentage of Charge-off to Contractual Balances for Impaired Loans	17.00%	17.10%
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0
Reduction of Stated Interest Rate [Member] | Minimum [Member]
Note 7 - Loans (Details) [Line Items]
Troubled Debt Restructurings Length of Modifications	7 months
Reduction of Stated Interest Rate [Member] | Maximum [Member]
Note 7 - Loans (Details) [Line Items]
Troubled Debt Restructurings Length of Modifications	2 years
Commercial Loans [Member] | Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) [Line Items]
Financing Receivable, Modifications, Recorded Investment	16,722,000	16,506,000
Commercial Loans [Member]
Note 7 - Loans (Details) [Line Items]
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	598,000
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	10,200,000
Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) [Line Items]
Financing Receivable, Modifications, Recorded Investment	100,400,000	104,300,000
Allowance for Credit Losses, Change in Method of Calculating Impairment	6,900,000	6,500,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	148,000
Non Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) [Line Items]
Financing Receivable, Modifications, Recorded Investment	44,500,000	41,600,000
Allowance for Credit Losses, Change in Method of Calculating Impairment	2,100,000	4,900,000
Nonaccrual Loans [Member]
Note 7 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	80,300,000	70,200,000
Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment	100,400,000
Financing Receivable, Modifications, Recorded Investment	100,393,000	104,356,000
Nonaccrual Loans Held for Sale [Member]
Note 7 - Loans (Details) [Line Items]
Impaired Financing Receivable, Recorded Investment		$104,300,000
Minimum [Member]
Note 7 - Loans (Details) [Line Items]
Period Loan is in Payment Default	60 days
Maximum [Member]
Note 7 - Loans (Details) [Line Items]
Period Loan is in Payment Default	90 days

Note_7_Loans_Details_Component

Note 7 - Loans (Details) - Components of Loans in Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Type of Loans:
Gross loans	$9,224,797	$8,914,080
Allowance for loan losses	-156,089	-161,420
Unamortized deferred loan fees	-11,116	-12,392
Total loans, net	9,057,592	8,740,268
Loans held for sale		973
Commercial Loans [Member]
Type of Loans:
Gross loans	2,434,550	2,382,493
Residential Mortgage Loans [Member]
Type of Loans:
Gross loans	1,600,269	1,570,059
Commercial Mortgage Loans [Member]
Type of Loans:
Gross loans	4,663,051	4,486,443
Equity Lines [Member]
Type of Loans:
Gross loans	175,997	172,879
Real Estate Construction Loans [Member]
Type of Loans:
Gross loans	345,560	298,654
Installment And Other Loans [Member]
Type of Loans:
Gross loans	$5,370	$3,552

Note_7_Loans_Details_Average_B

Note 7 - Loans (Details) - Average Balance And Interest Income Recognized Related To Impaired Loans (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Financing Receivable, Impaired [Line Items]
Loans, average recorded investment	$175,989	$195,365
Loans, interest income recognized	1,335	1,520
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans, average recorded investment	25,426	30,844
Loans, interest income recognized	229	226
Real Estate Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans, average recorded investment	22,990	34,060
Loans, interest income recognized	65	65
Commercial Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans, average recorded investment	110,293	111,305
Loans, interest income recognized	917	1,134
Residential Mortgage and Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Loans, average recorded investment	17,280	19,156
Loans, interest income recognized	$124	$95

Note_7_Loans_Details_Impaired_

Note 7 - Loans (Details) - Impaired Loans and Related Allowance for Credit Losses (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
With no allocated allowance
Loans with no related allowance, unpaid principal balance	$159,216	$132,395
Loans with no related allowance, recorded investment	123,660	113,167
With allocated allowance
Loans with related allowance, unpaid principal balance	58,599	78,225
Loans with related allowance, recorded investment	57,057	61,352
Allowance	11,044	11,798
Total impaired loans	217,815	210,620
Total impaired loans	180,717	174,519
Total impaired loans	11,044	11,798
Commercial Loans [Member]
With allocated allowance
Loans with related allowance, unpaid principal balance	15,677	7,003
Loans with related allowance, recorded investment	15,660	5,037
Allowance	3,911	1,263
Total impaired loans	3,911	1,263
Real Estate Construction Loans [Member]
With allocated allowance
Loans with related allowance, unpaid principal balance		19,006
Loans with related allowance, recorded investment		8,703
Allowance		1,077
Total impaired loans		1,077
Commercial Mortgage Loans [Member]
With allocated allowance
Loans with related allowance, unpaid principal balance	27,529	38,197
Loans with related allowance, recorded investment	26,581	34,022
Allowance	6,635	8,993
Total impaired loans	6,635	8,993
Residential Mortgage and Equity Lines [Member]
With allocated allowance
Loans with related allowance, unpaid principal balance	15,393	14,019
Loans with related allowance, recorded investment	14,816	13,590
Allowance	498	465
Total impaired loans	498	465
Commercial Loans [Member]
With no allocated allowance
Loans with no related allowance, unpaid principal balance	14,176	19,479
Loans with no related allowance, recorded investment	13,148	18,452
Real Estate Construction Loans [Member]
With no allocated allowance
Loans with no related allowance, unpaid principal balance	49,076	32,924
Loans with no related allowance, recorded investment	22,874	17,025
Commercial Mortgage Loans [Member]
With no allocated allowance
Loans with no related allowance, unpaid principal balance	93,468	77,474
Loans with no related allowance, recorded investment	85,142	75,172
Residential Mortgage and Equity Lines [Member]
With no allocated allowance
Loans with no related allowance, unpaid principal balance	2,496	2,518
Loans with no related allowance, recorded investment	$2,496	$2,518

Note_7_Loans_Details_Aging_of_

Note 7 - Loans (Details) - Aging of Loan Portfolio (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-59 Days Past Due	$27,746	$36,359
Loans, 60-89 Days Past Due	1,788	5,879
Loans, Greater than 90 Days Past Due	787
Non-accrual Loans	80,324	70,163
Loans, Past Due	110,645	112,401
Loans, Not Past Due	9,114,152	8,801,679
Loans	9,224,797	8,914,080
Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-59 Days Past Due	3,530	11,595
Loans, 60-89 Days Past Due	50	1,238
Loans, Greater than 90 Days Past Due	787
Non-accrual Loans	12,086	6,983
Loans, Past Due	16,453	19,816
Loans, Not Past Due	2,418,097	2,362,677
Loans	2,434,550	2,382,493
Real Estate Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-59 Days Past Due		1,416
Non-accrual Loans	17,126	19,963
Loans, Past Due	17,126	21,379
Loans, Not Past Due	328,434	277,275
Loans	345,560	298,654
Commercial Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-59 Days Past Due	22,041	17,654
Loans, 60-89 Days Past Due	1,738	3,909
Non-accrual Loans	43,079	35,606
Loans, Past Due	66,858	57,169
Loans, Not Past Due	4,596,193	4,429,274
Loans	4,663,051	4,486,443
Residential Mortgage and Equity Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-59 Days Past Due	2,175	5,634
Loans, 60-89 Days Past Due		732
Non-accrual Loans	8,033	7,611
Loans, Past Due	10,208	13,977
Loans, Not Past Due	1,766,058	1,728,961
Loans	1,776,266	1,742,938
Installment And Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-59 Days Past Due		60
Loans, Past Due		60
Loans, Not Past Due	5,370	3,492
Loans	$5,370	$3,552

Note_7_Loans_Details_Troubled_

Note 7 - Loans (Details) - Troubled Debt Restructuring (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
Special Reserve	$11,044,000		$11,798,000
Commercial Loans [Member] | Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	1	2
Pre-Modification Recorded Investment	850,000	8,243,000
Post-Modification Recorded Investment	850,000	8,243,000
Special Reserve		1,035,000
Commercial Mortgage Loans [Member] | Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	3
Pre-Modification Recorded Investment	8,613,000
Post-Modification Recorded Investment	8,613,000
Residential Mortgage Loans [Member] | Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	4	2
Pre-Modification Recorded Investment	1,522,000	671,000
Post-Modification Recorded Investment	1,374,000	671,000
Charge-offs	148,000
Special Reserve	46,000	36,000
Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	8	4
Pre-Modification Recorded Investment	10,985,000	8,914,000
Post-Modification Recorded Investment	10,837,000	8,914,000
Charge-offs	148,000
Special Reserve	$46,000	$1,071,000

Note_7_Loans_Details_Accruing_

Note 7 - Loans (Details) - Accruing Troubled Debt Restructurings (Accruing Troubled Debt Restructuring [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Modifications [Line Items]
Accruing TDRs	$100,393	$104,356
Payment Deferral [Member] | Commercial Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	13,108	11,572
Payment Deferral [Member] | Commercial Mortgage Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	17,430	20,543
Payment Deferral [Member] | Residential Mortgage Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	5,233	3,316
Payment Deferral [Member] | Real Estate Construction Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs		5,765
Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	35,771	41,196
Rate Reduction [Member] | Commercial Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	1,520
Rate Reduction [Member] | Commercial Mortgage Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	6,101	26,694
Rate Reduction [Member] | Residential Mortgage Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	1,008
Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	8,629	26,694
Rate Reduction and Payment Deferral [Member] | Commercial Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	2,094	4,934
Rate Reduction and Payment Deferral [Member] | Commercial Mortgage Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	50,861	26,351
Rate Reduction and Payment Deferral [Member] | Residential Mortgage Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	3,038	4,771
Rate Reduction and Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	55,993	36,056
Rate Reduction and Forgiveness of Principal [Member] | Residential Mortgage Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs		410
Rate Reduction and Forgiveness of Principal [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs		410
Commercial Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	16,722	16,506
Commercial Mortgage Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	74,392	73,588
Residential Mortgage Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs	9,279	8,497
Real Estate Construction Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing TDRs		$5,765

Note_7_Loans_Details_Nonaccrua

Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings (Non Accruing Troubled Debt Restructuring [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	$44,541	$41,618
Payment Deferral [Member] | Commercial Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	2,323	1,423
Payment Deferral [Member] | Commercial Mortgage Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	12,344	15,917
Payment Deferral [Member] | Residential Mortgage Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	622	1,026
Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	15,289	18,366
Forgiveness of Principal [Member] | Commercial Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	1,144	860
Forgiveness of Principal [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	1,144	860
Rate Reduction and Payment Deferral [Member] | Commercial Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs		1,269
Rate Reduction and Payment Deferral [Member] | Commercial Mortgage Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	26,834	973
Rate Reduction and Payment Deferral [Member] | Residential Mortgage Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	1,274	688
Rate Reduction and Payment Deferral [Member] | Real Estate Construction Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs		19,462
Rate Reduction and Payment Deferral [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	28,108	22,392
Commercial Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	3,467	3,552
Commercial Mortgage Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	39,178	16,890
Residential Mortgage Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs	1,896	1,714
Real Estate Construction Loans [Member]
Note 7 - Loans (Details) - Non-accrual Troubled Debt Restructurings [Line Items]
Non Accrual TDRs		$19,462

Note_7_Loans_Details_Troubled_1

Note 7 - Loans (Details) - Troubled Debt Restructuring Activity (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring Activity [Line Items]
Beginning balance	$104,356,000	$117,597,000
New restructurings	10,628,000	7,375,000
Restructured loans restored to accrual status		962,000
Charge-offs	-148,000
Payments	-4,254,000	-7,012,000
Restructured loans placed on nonaccrual	-10,189,000
Ending balance	100,393,000	118,922,000
Non Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring Activity [Line Items]
Beginning balance	41,618,000	38,769,000
New restructurings	209,000	1,539,000
Restructured loans restored to accrual status		-962,000
Charge-offs	-2,754,000	-4,000
Payments	-4,721,000	-1,545,000
Restructured loans placed on nonaccrual	10,189,000
Ending balance	$44,541,000	$37,797,000

Note_7_Loans_Details_Portfolio

Note 7 - Loans (Details) - Portfolio by Risk Rating (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]
Loans	$9,224,797	$8,914,080
Loans held for sale		973
Commercial Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,314,983	2,260,474
Commercial Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	50,083	47,619
Commercial Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	67,662	72,561
Commercial Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,822	1,839
Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,434,550	2,382,493
Real Estate Construction Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	328,434	272,927
Real Estate Construction Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	16,626	25,227
Real Estate Construction Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	500	500
Real Estate Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	345,560	298,654
Commercial Mortgage Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	4,375,229	4,213,453
Commercial Mortgage Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	123,384	105,970
Commercial Mortgage Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	154,848	167,020
Commercial Mortgage Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	9,590
Commercial Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	4,663,051	4,486,443
Residential Mortgage and Equity Lines [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,765,727	1,733,248
Residential Mortgage and Equity Lines [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	304
Residential Mortgage and Equity Lines [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	10,235	9,690
Residential Mortgage and Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,776,266	1,742,938
Installment And Other Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,370	3,552
Installment And Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,370	3,552
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	8,789,743	8,483,654
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	173,771	153,589
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	249,371	274,498
Loans held for sale		973
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	$11,912	$2,339

Note_7_Loans_Details_Allowance

Note 7 - Loans (Details) - Allowance for Loan Losses by Portfolio Segment and Based on Impairment Method (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Loans individually evaluated for impairment
Loans individually evaluated for impairment, allowance	$11,044	$11,798
Loans individually evaluated for impairment, balance	180,717	174,519
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	145,045	149,622
Loans collectively evaluated for impairment, balance	9,044,080	8,739,561
Loans, allowance	156,089	161,420
Loans	9,224,797	8,914,080
Commercial Loans [Member]
Loans individually evaluated for impairment
Loans individually evaluated for impairment, allowance	3,911	1,263
Loans individually evaluated for impairment, balance	28,808	23,489
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	45,794	46,238
Loans collectively evaluated for impairment, balance	2,405,742	2,359,004
Loans, allowance	49,705	47,501
Loans	2,434,550	2,382,493
Real Estate Construction Loans [Member]
Loans individually evaluated for impairment
Loans individually evaluated for impairment, allowance		1,077
Loans individually evaluated for impairment, balance	22,873	25,728
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	23,270	26,575
Loans collectively evaluated for impairment, balance	322,687	272,926
Loans, allowance	23,270	27,652
Loans	345,560	298,654
Commercial Mortgage Loans [Member]
Loans individually evaluated for impairment
Loans individually evaluated for impairment, allowance	6,635	8,993
Loans individually evaluated for impairment, balance	111,724	109,194
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	64,683	65,680
Loans collectively evaluated for impairment, balance	4,551,327	4,377,249
Loans, allowance	71,318	74,673
Loans	4,663,051	4,486,443
Residential Mortgage and Equity Lines [Member]
Loans individually evaluated for impairment
Loans individually evaluated for impairment, allowance	498	465
Loans individually evaluated for impairment, balance	17,312	16,108
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	11,279	11,113
Loans collectively evaluated for impairment, balance	1,758,954	1,726,830
Loans, allowance	11,777	11,578
Loans	1,776,266	1,742,938
Installment And Other Loans [Member]
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment, allowance	19	16
Loans collectively evaluated for impairment, balance	5,370	3,552
Loans, allowance	19	16
Loans	$5,370	$3,552

Note_7_Loans_Details_Allowance1

Note 7 - Loans (Details) - Allowance for Loan Losses by Portfolio Segment (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	$47,501	$65,103
Provision/(reversal) for possible loan losses	793	4,888
Charge-offs	-864	-7,226
Recoveries	2,275	2,017
Net charge-offs	1,411	-5,209
Balance	49,705	64,782
Reserve to impaired loans	3,911	4,663
Reserve to non-impaired loans	45,794	60,119
Reserve for off-balance sheet credit commitments	903	929
Real Estate Construction Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	27,652	11,999
Provision/(reversal) for possible loan losses	-4,427	-1,398
Recoveries	45	25
Net charge-offs	45	25
Balance	23,270	10,626
Reserve to impaired loans		3,129
Reserve to non-impaired loans	23,270	7,497
Reserve for off-balance sheet credit commitments	527	326
Commercial Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	74,673	84,753
Provision/(reversal) for possible loan losses	-1,697	-4,306
Charge-offs	-3,452	-1,698
Recoveries	1,794	2,577
Net charge-offs	-1,658	879
Balance	71,318	81,326
Reserve to impaired loans	6,635	6,165
Reserve to non-impaired loans	64,683	75,161
Reserve for off-balance sheet credit commitments	181	445
Residential Mortgage and Equity Lines [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	11,578	12,005
Provision/(reversal) for possible loan losses	328	447
Charge-offs	-148	-78
Recoveries	19	3
Net charge-offs	-129	-75
Balance	11,777	12,377
Reserve to impaired loans	498	538
Reserve to non-impaired loans	11,279	11,839
Reserve for off-balance sheet credit commitments	40	33
Installment And Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	16	29
Provision/(reversal) for possible loan losses	3	-2
Balance	19	27
Reserve to impaired loans		0
Reserve to non-impaired loans	19	27
Reserve for off-balance sheet credit commitments	1	1
Total [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	161,420	173,889
Provision/(reversal) for possible loan losses	-5,000	-371
Charge-offs	-4,464	-9,002
Recoveries	4,133	4,622
Net charge-offs	-331	-4,380
Balance	156,089	169,138
Reserve to impaired loans	11,044	14,495
Reserve to non-impaired loans	145,045	154,643
Reserve for off-balance sheet credit commitments	$1,652	$1,734

Note_9_Borrowed_Funds_Details

Note 9 - Borrowed Funds (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Note 9 - Borrowed Funds (Details) [Line Items]
Securities Sold under Agreements to Repurchase	400,000,000	$450,000,000
Weighted Average Rate of Securities Sold Under Agreements	3.89%	3.85%
Prepaid Security Sold Under Repurchase Agreement			100,000,000
Rate of Prepaid Security Sold Under Repurchase Agreements			3.50%
Prepayment Penalty Security Sold Under Agreements to Repurchase			3,400,000
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months	460,000,000	400,000,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	0.24%	0.27%
Long-term Federal Home Loan Bank Advances	25,000,000	25,000,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate	1.13%	1.13%
Callable Securities [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Number of Floating-to-fixed Rate Agreements	4
Non Callable Fixed Rate Securities [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Securities Sold under Agreements to Repurchase	200,000,000
Weighted Average Rate of Securities Sold Under Agreements	2.78%
Mature in August 2016 [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Year Two	50,000,000
Mature in July 2017 [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Year Three	50,000,000
Mature in June 2018 [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Year Four	50,000,000
Mature in July 2018 [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Year Five	50,000,000
Floating to Fixed Rate Agreements Totaling $200 Million [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.40%
Floating to Fixed Rate Agreements Totaling $200 Million [Member] | Maximum [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.07%
Floating to Fixed Rate Agreements Totaling $200 Million [Member] | Minimum [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.89%
Floating to Fixed Rate Agreements Totaling $200 Million [Member]
Note 9 - Borrowed Funds (Details) [Line Items]
Number of Floating-to-fixed Rate Agreements	4
Total Floating to Fixed Rate	200,000,000
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	467,500,000	$516,300,000

Note_10_Income_Taxes_Details

Note 10 - Income Taxes (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$21,364,000	$17,890,000
Effective Income Tax Rate Reconciliation, Percent	37.30%	36.40%
Income Taxes Receivable			$18,100,000

Note_11_Fair_Value_Measurement2

Note 11 - Fair Value Measurements (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Note 11 - Fair Value Measurements (Details) [Line Items]
Fair Value Measurement With Unobservable Inputs, Reconciliation Recurring Basis Warrants (in Dollars)	21,000	$27,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets (in Dollars)	30,799,000	31,477,000
Warrants Outstanding [Member] | Minimum [Member]
Note 11 - Fair Value Measurements (Details) [Line Items]
Fair Value Assumptions, Risk Free Interest Rate	0.57%
Fair Value Assumptions, Expected Volatility Rate	10.90%
Warrants Outstanding [Member] | Maximum [Member]
Note 11 - Fair Value Measurements (Details) [Line Items]
Fair Value Assumptions, Risk Free Interest Rate	1.40%
Fair Value Assumptions, Expected Volatility Rate	15.00%
Net of Estimated Disposal Costs [Member]
Note 11 - Fair Value Measurements (Details) [Line Items]
Other Real Estate, Foreclosed Assets, and Repossessed Assets (in Dollars)			$30,800,000	$31,500,000
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%
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	5 years
Estimated Sales Cost Applied to Collateral	6.00%

Note_11_Fair_Value_Measurement3

Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	$1,203,682	$1,318,935
Assets	1,205,318	1,320,838
Liabilities
Liabilities	13,569	9,633
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	350,183	664,004
US Treasury Securities [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	350,183	664,004
Mortgage-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	760,329	544,303
Mortgage-backed Securities [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	760,329	544,303
Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 2 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	42	45
Collateralized Mortgage Obligations [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	42	45
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	74,511	94,472
Corporate Debt Securities [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	74,511	94,472
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	5,921	5,866
Mutual Funds [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	5,921	5,866
Preferred Stock of Government Sponsored Entities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	3,946	3,224
Preferred Stock of Government Sponsored Entities [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	3,946	3,224
Other Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	8,750	7,021
Other Equity Securities [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	8,750	7,021
Warrant [Member] | Fair Value, Inputs, Level 3 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Assets	21	27
Warrant [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Assets	21	27
Foreign Exchange Contract [Member] | Fair Value, Inputs, Level 2 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Assets	1,615	1,876
Liabilities
Liabilities	4,959	5,007
Foreign Exchange Contract [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Assets	1,615	1,876
Liabilities
Liabilities	4,959	5,007
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Liabilities
Liabilities	8,610	4,626
Interest Rate Swap [Member]
Liabilities
Liabilities	8,610	4,626
Fair Value, Inputs, Level 1 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	356,104	669,870
Assets	356,104	669,870
Fair Value, Inputs, Level 2 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Securities available-for-sale	847,578	649,065
Assets	849,193	650,941
Liabilities
Liabilities	13,569	9,633
Fair Value, Inputs, Level 3 [Member]
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Assets	$21	$27

Note_11_Fair_Value_Measurement4

Note 11 - Fair Value Measurements (Details) - Financial Assets and Liabilities Measured On a Non-recurring Basis (USD $)	3 Months Ended				12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014		Dec. 31, 2013
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	$66,363				$76,234
Asset Impairment Charges	609		294		4,596		3,344
Commercial Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	11,749				3,774
Commercial Loans [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	11,749				3,774
Asset Impairment Charges					17		5,731
Commercial Mortgage Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	19,947				25,029
Commercial Mortgage Loans [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	19,947				25,029
Asset Impairment Charges	56				3,914		125
Residential Mortgage and Equity Lines [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	14,318				13,126
Residential Mortgage and Equity Lines [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	14,318				13,126
Asset Impairment Charges	148				27		213
Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	46,014				49,554
Impaired Loans [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	46,014				49,554
Asset Impairment Charges	204				3,958		6,069
Other Real Estate Owned [Member] | Fair Value, Inputs, Level 1 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring		[1]				[2]
Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	10,868	[1]			16,458	[2]
Other Real Estate Owned [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	4,110	[1]			4,110	[2]
Other Real Estate Owned [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	14,978	[1]			20,568	[2]
Asset Impairment Charges	181	[1]	183	[1]	202	[2]	-3,134	[2]
Investments in Venture Capital [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	5,371				5,495
Investments in Venture Capital [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	5,371				5,495
Asset Impairment Charges	224		111		436		409
Construction - Other Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring					7,625
Construction - Other Loans [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring					7,625
Equity Investments [Member] | Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring					617
Equity Investments [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring					617
Fair Value, Inputs, Level 2 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	10,868				16,458
Fair Value, Inputs, Level 3 [Member]
Impaired loans by type:
Assets Fair Value Disclosure Nonrecurring	$55,495				$59,776
[1]	Other real estate owned balance of $30.8 million in the condensed consolidated balance sheet is net of estimated disposal costs.
[2]	Other real estate owned balance of $31.5 million in the consolidated balance sheet is net of estimated disposal costs.

Note_12_Fair_Value_of_Financia2

Note 12 - Fair Value of Financial Instruments (Details) - Fair Value of Financial Instruments (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financial Assets
Cash and due from banks	$182,159	$176,830	$161,657	$153,747
Cash and due from banks	182,159	176,830
Short-term investments	618,726	489,614
Short-term investments	618,726	489,614
Securities available-for-sale	1,203,682	1,318,935
Loans held for sale		973
Loans held for sale		1,225
Loans, net	9,057,592	8,740,268
Loans, net	9,001,232	8,688,072
Investment in Federal Home Loan Bank stock	25,000	30,785
Investment in Federal Home Loan Bank stock	25,000	30,785
Warrants	21	27
Warrants	21	27
Foreign exchange contracts	127,172	167,005
Foreign exchange contracts	1,615	1,876
Deposits	9,113,250	8,783,460
Deposits	9,114,489	8,785,342
Securities sold under agreements to repurchase	400,000	450,000
Securities sold under agreements to repurchase	422,161	473,816
Advances from Federal Home Loan Bank	485,000	425,000
Advances from Federal Home Loan Bank	484,983	424,974
Other borrowings	22,482	19,934
Other borrowings	19,396	17,978
Long-term debt	119,136	119,136
Long-term debt	60,020	59,425
Foreign exchange contracts	158,331	178,868
Foreign exchange contracts	4,959	5,007
Interest rate swaps	299,497	300,480
Interest rate swaps	8,610	4,626
Off-Balance Sheet Financial Instruments
Commitments to extend credit	2,027,773	2,071,766
Commitments to extend credit	-3,740	-3,442
Standby letters of credit	49,585	53,910
Standby letters of credit	-238	-243
Other letters of credit	50,558	48,142
Other letters of credit	-34	-29
Bill of lading guarantees	159	108
Bill of lading guarantees	$0

Note_12_Fair_Value_of_Financia3

Note 12 - Fair Value of Financial Instruments (Details) - Fair Value Hierarchy of Financial Instruments (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financial Assets
Cash and due from banks	$182,159	$176,830
Short-term investments	618,726	489,614
Securities available-for-sale	1,203,682	1,318,935
Loans held-for-sale		1,225
Loans, net	9,001,232	8,688,072
Investment in Federal Home Loan Bank stock	25,000	30,785
Warrants	21	27
Financial Liabilities
Deposits	9,114,489	8,785,342
Securities sold under agreement to repurchase	422,161	473,816
Advances from Federal Home Loan Bank	484,983	424,974
Other borrowings	19,396	17,978
Long-term debt	60,020	59,425
Fair Value, Inputs, Level 1 [Member]
Financial Assets
Cash and due from banks	182,159	176,830
Short-term investments	618,726	489,614
Securities available-for-sale	356,104	669,870
Fair Value, Inputs, Level 2 [Member]
Financial Assets
Securities available-for-sale	847,578	649,065
Investment in Federal Home Loan Bank stock	25,000	30,785
Financial Liabilities
Securities sold under agreement to repurchase	422,161	473,816
Advances from Federal Home Loan Bank	484,983	424,974
Long-term debt	60,020	59,425
Fair Value, Inputs, Level 3 [Member]
Financial Assets
Loans held-for-sale		1,225
Loans, net	9,001,232	8,688,072
Warrants	21	27
Financial Liabilities
Deposits	9,114,489	8,785,342
Other borrowings	$19,396	$17,978

Note_14_Financial_Derivatives_

Note 14 - Financial Derivatives (Details) (USD $)	3 Months Ended		1 Months Ended	12 Months Ended	1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	31-May-14	Dec. 31, 2014	Jun. 30, 2014	Oct. 31, 2014
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	-1,588,000
Net Accrued on Interest Rate Swaps		0
Interest Expense [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Net Accrued on Interest Rate Swaps	703,000
Interest Income [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Net Accrued on Interest Rate Swaps	683,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative Asset, Number of Instruments Held			5
Derivative, 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			0.27%
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax				-4,000,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Minimum [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative, Original Maturity					4 years
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Maximum [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative, Original Maturity					8 years
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative, Notional Amount	180,400,000				148,100,000	34,900,000
Derivative, Average Fixed Interest Rate	4.60%
Derivative, Average Variable Interest Rate	3.10%
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	-1,700,000
Derivative Liability, Number of Instruments Held					10	4
Derivative, Average Basis Spread on Variable Rate	2.92%
Positive Fair Value Member
Note 14 - Financial Derivatives (Details) [Line Items]
Sum of Spot and Forward Contract Notional Amount	127,200,000			167,000,000
Increase (Decrease) in Fair Value	1,600,000			1,900,000
Negative Fair Value Member
Note 14 - Financial Derivatives (Details) [Line Items]
Sum of Spot and Forward Contract Notional Amount	158,300,000			178,900,000
Increase (Decrease) in Fair Value	-5,000,000			-5,000,000
Cash [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Collateral Already Posted, Aggregate Fair Value	$11,400,000

Note_15_Balance_Sheet_Offsetti2

Note 15 - Balance Sheet Offsetting (Details) - Financial Instruments that are Eligible for Offset in the Consolidated Balance Sheet (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Liabilities:
Gross amounts of recognized liabilities	$400,000	$450,000
Net amounts of liabilities presented in the statement of financial position	400,000	450,000
Collateral posted	-400,000	-450,000
Derivatives-Gross amounts of recognized liabilities	8,610	4,626
Derivatives-Net amounts of liabilities presented in the statement of financial position	8,610	4,626
Derivatives-Collateral posted	($8,610)	($4,626)

Note_16_Stockholders_Equity_De

Note 16 - Stockholders' Equity (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$1,634,246,000		$1,602,888,000
Increase (Decrease) in Total Equity	31,400,000
Percentage Change in Total Equity	2.00%
Net Income (Loss) Attributable to Parent	35,980,000	31,259,000
Other Comprehensive Income (Loss), Net of Tax	4,923,000	7,639,000
Dividends, Common Stock, Cash	$8,000,000

Note_16_Stockholders_Equity_De1

Note 16 - Stockholders' Equity (Details) - Accumulated Other Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Securities available-for sale	($3,172)	($29,729)
Cash flow hedge derivatives	-2,397
Net unrealized gains/(losses) arising during the period
Securities available-for sale	6,499	11,094
Cash flow hedge derivatives	-1,588
Reclassification adjustment for net losses/(gains) in net income
Securities available-for sale	12	-3,455
Total other comprehensive income/(loss)
Total	4,923	7,639
Ending balance, income/(loss), net of tax
Securities available-for sale	3,339	-22,090
Cash flow hedge derivatives	-3,985
Total	-646	-22,090
Total	-5,569	-29,729
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Net unrealized gains/(losses) arising during the period
Securities available-for sale	11,213	19,141
Securities available-for sale	4,714	8,047
Securities available-for sale	6,499	11,094
Securities available-for sale	11,213	19,141
Securities available-for sale	4,714	8,047
Reclassification adjustment for net losses/(gains) in net income
Securities available-for sale	21	-5,961
Securities available-for sale	9	-2,506
Securities available-for sale	12	-3,455
Total other comprehensive income/(loss)
Securities available-for sale	11,234	13,180
Securities available-for sale	4,723	5,541
Securities available-for sale	6,511	7,639
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Net unrealized gains/(losses) arising during the period
Cash flow hedge derivatives	-2,740
Cash flow hedge derivatives	-1,152
Cash flow hedge derivatives	-1,588
Total	8,473	19,141
Total	3,562	8,047
Total	4,911	11,094
Reclassification adjustment for net losses/(gains) in net income
Total	21	-5,961
Total	9	-2,506
Total	12	-3,455
Total other comprehensive income/(loss)
Cash flow hedge derivatives	-2,740
Cash flow hedge derivatives	-1,152
Cash flow hedge derivatives	-1,588
Total	8,494	13,180
Total	3,571	5,541
Total	$4,923	$7,639