Investors Bancorp (ISBC) 10-Q 10 Nov 14 2014 Q3 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	9 Months Ended
	Sep. 30, 2014	Nov. 03, 2014
Document And Entity Information [Abstract]	'	'
Entity Registrant Name	'Investors Bancorp, Inc.	'
Entity Central Index Key	'0001594012	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	357,759,158

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and cash equivalents	$238,166	$250,689
Securities available-for-sale, at estimated fair value	1,045,962	785,032
Securities held-to-maturity, net (estimated fair value of $1,547,389 and $839,064 at September 30, 2014 and December 31, 2013, respectively)	1,514,374	831,819
Loans receivable, net	14,169,323	12,882,544
Loans held-for-sale	6,986	8,273
Stock in the Federal Home Loan Bank	140,990	178,126
Accrued interest receivable	53,742	47,448
Other real estate owned	5,731	8,516
Office properties and equipment, net	157,452	138,105
Net deferred tax asset	222,861	216,206
Bank owned life insurance	163,152	152,788
Goodwill and Intangible assets	107,775	109,129
Other assets	6,784	14,395
Total assets	17,833,298	15,623,070
Liabilities:	'	'
Deposits	11,471,598	10,718,811
Borrowed funds	2,536,594	3,367,274
Advance payments by borrowers for taxes and insurance	87,874	67,154
Other liabilities	189,078	135,504
Total liabilities	14,285,144	14,288,743
Commitments and contingencies	'	'
Stockholders' equity:	'	'
Preferred stock, $0.01 par value, 100,000,000 authorized shares; none issued	0	0
Common stock, $0.01 par value, 1,000,000,000 shares authorized; 358,859,752 issued and 357,758,058 outstanding at September 30, 2014; 367,041,688 issued and 353,046,057outstanding at December 31, 2013, respectively	3,589	1,519
Additional paid-in capital	2,861,597	720,766
Retained earnings	807,879	734,563
Treasury stock, at cost; 1,101,694 shares at September 30, 2014; 13,995,631 shares at December 31, 2013	-11,592	-67,046
Unallocated common stock held by the employee stock ownership plan	-93,273	-29,779
Accumulated other comprehensive loss	-20,046	-25,696
Total stockholders’ equity	3,548,154	1,334,327
Total liabilities and stockholders’ equity	$17,833,298	$15,623,070

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Held-to-maturity securities, estimated fair value	$1,547,389	$839,064
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	358,859,752	367,041,688
Common stock, shares outstanding	357,758,058	353,046,057
Treasury stock, shares	1,101,694	13,995,631

Consolidated_Statements_Of_Ope

Consolidated Statements Of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest and dividend income:	'	'	'	'
Loans receivable	$152,397	$127,186	$447,899	$369,682
Securities:	'	'	'	'
Equity	24	18	89	41
Government-sponsored enterprise obligations	12	1	35	3
Mortgage-backed securities	11,704	7,123	31,808	20,336
Municipal bonds and other debt	1,339	1,406	4,128	4,401
Other Investments	0	0	14	0
Interest-bearing deposits	70	20	379	41
Federal Home Loan Bank stock	1,512	1,643	5,420	4,521
Total interest and dividend income	167,058	137,397	489,772	399,025
Interest expense:	'	'	'	'
Deposits	14,489	11,730	43,245	36,668
Borrowed Funds	14,724	15,243	44,728	45,183
Total interest expense	29,213	26,973	87,973	81,851
Net interest income	137,845	110,424	401,799	317,174
Provision for loan losses	9,000	13,750	26,000	41,250
Net interest income after provision for loan losses	128,845	96,674	375,799	275,924
Non-interest income:	'	'	'	'
Fees and service charges	5,173	5,003	15,330	14,330
Income on bank owned life insurance	1,632	694	3,598	2,182
Gain on loan transactions, net	856	2,226	3,764	7,302
Gain on securities transactions	29	15	669	706
Gain on sale of other real estate owned, net	270	226	733	688
Other income	1,912	1,327	7,893	3,910
Total non-interest income	9,872	9,491	31,987	29,118
Non-interest expense:	'	'	'	'
Compensation and fringe benefits	40,137	31,592	133,166	90,472
Advertising and promotional expense	3,046	2,023	9,001	6,234
Office occupancy and equipment expense	12,040	10,386	37,023	29,026
Federal deposit insurance premiums	2,750	3,800	11,550	11,050
Stationery, printing, supplies and telephone	939	866	3,335	2,444
Professional fees	4,121	2,789	11,685	7,885
Data processing service fees	6,381	4,694	19,686	12,786
Contribution to charitable foundation	0	0	20,000	0
Other operating expenses	7,170	4,681	20,492	13,955
Total non-interest expenses	76,584	60,831	265,938	173,852
Income before income tax expense	62,133	45,334	141,848	131,190
Income tax expense	23,092	16,053	53,204	46,666
Net income	$39,041	$29,281	$88,644	$84,524
Basic earnings per share	$0.11	$0.11	$0.26	$0.31
Diluted earnings per share	$0.11	$0.11	$0.25	$0.30
Weighted average shares outstanding	'	'	'	'
Basic	343,493,691	275,229,343	344,494,901	274,801,234
Diluted	346,773,543	278,861,914	348,112,740	278,006,882

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income	$39,041	$29,281	$88,644	$84,524
Other comprehensive income (loss), net of tax:	'	'	'	'
Change in funded status of retirement obligations	109	141	327	424
Unrealized gain (loss) on securities available-for-sale	-2,329	152	3,555	-10,614
Net loss on securities reclassified from available for sale to held to maturity	0	0	0	-7,242
Accretion of loss on securities reclassified to held to maturity	441	502	1,310	502
Reclassification adjustment for security gains included in net income	0	0	-138	-405
Other-than-temporary impairment accretion on debt securities	199	641	596	1,032
Total other comprehensive income (loss)	-1,580	1,436	5,650	-16,303
Total comprehensive income	$37,461	$30,717	$94,294	$68,221

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Total	Common stock	Additional paid-in capital	Retained earnings	Treasury stock	Unallocated Common Stock Held by ESOP	Accumulated other comprehensive loss
In Thousands
Balance at Dec. 31, 2012	$1,066,817	$1,356	$533,034	$644,923	($73,692)	($31,197)	($7,607)
Net income	84,524	'	'	84,524	'	'	'
Other comprehensive income, net of tax	-16,303	'	'	'	'	'	-16,303
Purchase of treasury stock	-1,376	'	'	'	-1,376	'	'
Treasury stock allocated to restricted stock plan	0	'	-55	13	42	'	'
Compensation cost for stock options and restricted stock	2,648	'	2,648	'	'	'	'
Net tax benefit from stock-based compensation	234	'	234	'	'	'	'
Option exercise	4,775	'	425	'	4,350	'	'
Cash dividend declared	-16,789	'	'	-16,789	'	'	'
ESOP shares allocated or committed to be released	2,118	'	1,054	'	'	1,064	'
Balance at Sep. 30, 2013	1,126,648	1,356	537,340	712,671	-70,676	-30,133	-23,910
Balance at Dec. 31, 2013	1,334,327	1,519	720,766	734,563	-67,046	-29,779	-25,696
Net income	88,644	'	'	88,644	'	'	'
Other comprehensive income, net of tax	5,650	'	'	'	'	'	5,650
Purchase of treasury stock	-13,524	'	'	'	-13,524	'	'
Conversion of Investors Bancorp, MHC (213,963,274 shares)	2,093,719	2,140	2,091,579	'	'	'	'
Purchase by ESOP (6,617,421 shares)	'	66	66,108	'	'	-66,174	'
Treasury stock retired (14,293,439 shares)	'	-143	-64,126	'	64,269	'	'
Contribution of MHC	12,652	'	'	12,652	'	'	'
Equity from Gateway acquisition	22,000	'	22,000	'	'	'	'
Treasury stock allocated to restricted stock plan	0	'	-390	258	132	'	'
Compensation cost for stock options and restricted stock	13,697	'	13,697	'	'	'	'
Net tax benefit from stock-based compensation	3,344	'	3,344	'	'	'	'
Option exercise	12,287	7	7,703	'	4,577	'	'
Cash dividend declared	-28,238	'	'	-28,238	'	'	'
ESOP shares allocated or committed to be released	3,596	'	916	'	'	2,680	'
Balance at Sep. 30, 2014	$3,548,154	$3,589	$2,861,597	$807,879	($11,592)	($93,273)	($20,046)

Consolidated_Statements_of_Sto1

Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Statement of Stockholders' Equity [Abstract]	'	'
Purchase of treasury stock, shares	1,295,193	195,491
Merger of Investors Bancorp, MHC, shares	213,963,274	'
Purchase of ESOP, shares	6,617,421	'
Treasury stock retired, shares	14,293,439	'
Dividend paid	$0.08	$0.06

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:	'	'
Net income	$88,644	$84,524
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Contribution of stock to charitable foundation	10,000	0
ESOP and stock-based compensation expense	17,293	4,766
Amortization of premiums and accretion of discounts on securities, net	6,880	8,049
Amortization of premiums and accretion of fees and costs on loans, net	-38	5,159
Amortization of intangible assets	2,888	1,620
Provision for loan losses	26,000	41,250
Depreciation and amortization of office properties and equipment	9,423	6,038
Gain on securities, net	-669	-706
Mortgage loans originated for sale	-110,738	-334,676
Proceeds from mortgage loan sales	146,480	359,216
Gain on sales of mortgage loans, net	-2,044	-5,437
Gain on sale of other real estate owned	-733	-688
Gain on bargain purchase	-1,482	0
Income on bank owned life insurance	-3,598	-2,182
Increase in accrued interest receivable	-5,575	-287
Deferred tax benefit	-1,894	-12,308
Decrease (increase) in other assets	7,822	-26,860
Increase in other liabilities	51,620	39,449
Total adjustments	151,635	82,403
Net cash provided by (used in) operating activities	240,279	166,927
Cash flows from investing activities:	'	'
Purchases of loans receivable	-191,726	-793,198
Net originations of loans receivable	-961,503	-443,440
Proceeds from disposition of loans held for investment	1,720	121,046
Gain on disposition of loans held for investment	-1,720	-1,865
Net proceeds from sale of foreclosed real estate	6,754	7,484
Purchases of mortgage-backed securities held to maturity	-797,516	-29,723
Purchases of debt securities held-to-maturity	-11,230	-9,391
Purchases of mortgage-backed securities available-for-sale	-388,798	-295,897
Proceeds from paydowns/maturities on mortgage-backed securities held-to-maturity	116,088	57,499
Proceeds from paydowns on equity securities available for sale	430	108
Proceeds from paydowns/maturities on debt securities held-to-maturity	11,484	17,086
Proceeds from paydowns/maturities on mortgage-backed securities available-for-sale	124,566	246,415
Proceeds from sales of mortgage-backed securities available-for-sale	37,682	55,971
Proceeds from sales of US Government and Agency Obligations available-for-sale	3,000	0
Proceeds from other investment securities	13,411	0
Redemption of equity securities available-for-sale	164	0
Proceeds from redemptions of Federal Home Loan Bank stock	135,172	89,102
Purchases of Federal Home Loan Bank stock	-97,571	-131,484
Purchases of office properties and equipment	-24,480	-16,559
Death benefit proceeds from bank owned life insurance	2,249	0
Cash received, net of cash consideration paid for acquisitions	11,307	0
Cash received, net of cash consideration paid for acquisitions	17,917	0
Net cash provided by (used in) investing activities	-1,992,600	-1,126,846
Cash flows from financing activities:	'	'
Net increase in deposits	498,115	-126,522
Proceeds from Issuance or Sale of Equity	2,149,893	0
Loan to ESOP for purchase of common stock	-66,174	0
Repayments of funds borrowed under other repurchase agreements	-98,205	150,000
Net increase in other borrowings	-737,660	940,460
Net increase in advance payments by borrowers for taxes and insurance	19,960	22,313
Dividends paid	-28,238	-16,789
Exercise of stock options	12,287	4,775
Purchase of treasury stock	-13,524	-1,376
Net tax benefit from stock-based compensation	3,344	234
Net cash (used in) provided by financing activities	1,739,798	973,095
Net increase in cash and cash equivalents	-12,523	13,176
Cash and cash equivalents beginning balance	250,689	155,153
Cash and cash equivalents ending balance	238,166	168,329
Noncash investing activities:	'	'
Real estate acquired through foreclosure	3,139	3,822
Cash paid during the year for:	'	'
Interest	87,939	81,028
Income taxes	59,616	59,923
Non-cash assets acquired:	'	'
Investment securities available for sale	50,347	0
Loans	195,062	0
Goodwill and Other intangible assets, net	1,853	0
Other Assets	21,343	0
Total non-cash assets acquired	268,605	0
Liabilities assumed:	'	'
Deposits	254,672	0
Borrowings	5,185	0
Other Liabilities	3,184	0
Total liabilities assumed	263,041	0
Net non-cash assets acquired	$5,564	$0

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	Investors Bancorp, Inc. (the “Company”) is a Delaware corporation that was incorporated in December 2013 to be the successor to Investors Bancorp, Inc. (“Old Investors Bancorp”) upon completion of the mutual-to-stock conversion of Investors Bancorp, MHC, the top tier holding company of Old Investors Bancorp. Old Investors Bancorp was the former mid tier holding company for Investors Bank. Prior to completion of the second step conversion, approximately 62% of the shares of common stock of Old Investors Bancorp was owned by Investors Bancorp, MHC. In conjunction with the second step conversion, Investors Bancorp, MHC merged into Old Investors Bancorp (and ceased to exist), and Old Investors Bancorp merged into the Company and the Company became its successor under the name Investors Bancorp, Inc. The second step conversion was completed May 7, 2014. The Company raised net proceeds of $2.15 billion by selling a total of 219,580,695 shares of common stock at $10.00 per share in the second step stock offering and issued 1,000,000 shares of common stock to the Investors Charitable Foundation. Concurrent with the completion of the stock offering, each share of Old Investors Bancorp common stock owned by public stockholders (stockholders other than Investors Bancorp, MHC) was exchanged for 2.55 shares of Company common stock. A total of 137,560,968 shares of Company common stock were issued in the exchange. The conversion was accounted for as a capital raising transaction by entities under common control. The historical financial results of Investors Bancorp, MHC are immaterial to the results of the Company and therefore the net assets of Investors Bancorp, MHC have been reflected as an increase to shareholders' equity. In addition, the second step conversion resulted in the accelerated vesting of all outstanding stock awards as of the conversion date. The withholding of shares for payment of taxes with respect to these awards resulted in treasury stock of 1,101,694 shares.
	As a result of the conversion, all share information has been revised to reflect the 2.55- to- one exchange ratio. Financial information presented in this Form 10-Q is derived in part from the consolidated financial statements of Old Investors Bancorp and subsidiaries.
	In the opinion of management, all the adjustments (consisting of normal and recurring adjustments) necessary for the fair presentation of the consolidated financial condition and the consolidated results of operations for the unaudited periods presented have been included. The results of operations and other data presented for the three and nine months ended September 30, 2014 are not necessarily indicative of the results of operations that may be expected for subsequent periods or the full year results.
	Certain information and note disclosures usually included in financial statements prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) for the preparation of the Form 10-Q. The consolidated financial statements presented should be read in conjunction with the Company’s audited consolidated financial statements and notes to the audited consolidated financial statements included in the Company’s December 31, 2013 Annual Report on Form 10-K. Certain reclassifications have been made to prior year amounts to conform to current year presentation.

Business_Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Business Combinations	'
	Business Combinations
	On January 10, 2014, the Company completed its acquisition of Gateway Community Financial Corp., the federally-chartered holding company for GCF Bank ("Gateway"), which operated 4 branches in Gloucester County, New Jersey. After the purchase accounting adjustments, the Company added $254.7 million in customer deposits and acquired $195.1 million in loans. This transaction generated $1.9 million in core deposit premium. The acquisition was accounted for under the acquisition method of accounting as prescribed by Financial Accounting Standards Board ("FASB") Accounting Standards Codification (“ASC”) 805 “Business Combinations”, as amended. Under this method of accounting, the purchase price has been allocated to the respective assets acquired and liabilities assumed based on their estimated fair values, net of applicable income tax effects. The acquisition resulted in a bargain purchase gain of $1.5 million, net of tax. In conjunction with the acquisition, Old Investors Bancorp issued 1,945,079 shares to Investors Bancorp, MHC which was determined using the closing average twenty day stock price of Old Investors Bancorp's common stock. GCF Bank was merged into the Bank as of the acquisition date.
	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date of acquisition for Gateway Financial, net of cash consideration paid:
		At January 10, 2014
		(In millions)
	Cash and cash equivalents, net	$	17.9
	Securities available-for-sale	50.3
	Loans receivable	195.1
	Accrued interest receivable	0.7
	Other real estate owned	0.4
	Office properties and equipment, net	4.3
	Intangible assets	1.9
	Other assets	15.9
	Total assets acquired	286.5
	Deposits	(254.7		)
	Borrowed funds	(5.2		)
	Other liabilities	(3.1		)
	Total liabilities assumed	$	(263.0	)
	Net assets acquired	$	23.5
	The calculation of goodwill is subject to change for up to one year after closing date of the transaction as additional information relative to closing date estimates and uncertainties become available. As the Company finalizes its analysis of these assets and liabilities, there may be adjustments to the recorded carrying values.
	On December 6, 2013, the Company completed the acquisition of Roma Financial Corporation ("Roma Financial") which operated 26 branches in Burlington, Ocean, Mercer, Camden and Middlesex counties, New Jersey. After the purchase accounting adjustments, the Company added $1.34 billion in customer deposits and acquired $991.0 million in loans. This transaction generated $8.9 million in core deposit premium. The acquisition was accounted for under the acquisition method of accounting as prescribed by ASC 805 “Business Combinations,” as amended. Under this method of accounting, the purchase price has been allocated to the respective assets acquired and liabilities assumed based on their estimated fair values, net of applicable income tax effects. The excess cost over fair value of net assets acquired has been recorded as goodwill. In connection with the acquisition, Old Investors Bancorp issued 66,089,974 shares of its common stock, of which 16,255,845 shares went to Roma's public stockholders and 49,834,130 shares were issued to Investors Bancorp MHC. The purchase price for Roma Financial was determined using the exchange ratio of 0.8653 stated in the merger agreement and the closing stock price on December 6, 2013 of Old Investors Bancorp's common stock. The value assigned to the Roma MHC shares were based on the exchange ratio of 0.8653 and the difference between the appraised value of the Roma Financial Corporation franchise less the value given to the public stockholders.
	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date of acquisition for Roma, net of cash consideration paid:
		At December 6,
		2013
		(In millions)
	Cash and cash equivalents, net	$	118.2
	Securities available-for-sale	382
	Securities held to maturity	13.6
	Loans receivable	991
	Accrued interest receivable	3.8
	Other real estate owned	5.3
	Office properties and equipment, net	30.7
	Goodwill	0.3
	Intangible assets	9.5
	Other assets	78.5
	Total assets acquired	1,632.90
	Deposits	(1,341.2		)
	Borrowed funds	(92.1		)
	Other liabilities	(20.5		)
	Total liabilities assumed	$	(1,453.8	)
	Net assets acquired	$	179.1
	The calculation of goodwill is subject to change for up to one year after closing date of the transaction as additional information relative to closing date estimates and uncertainties become available. As the Company finalizes its analysis of these assets and liabilities, there may be adjustments to the recorded carrying values.
	Fair Value Measurement of Assets Acquired and Liabilities Assumed
	Described below are the methods used to determine the fair values of the significant assets acquired and liabilities assumed in the Gateway and Roma Financial acquisitions based on guidance from ASC 820-10 which defines fair value as the price that would be received to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date.
	Securities.The estimated fair values of the investment securities classified as available for sale were calculated utilizing Level 1 inputs. The prices for these instruments are based upon sales of the securities shortly after the acquisition date.  Investment securities classified as Held to Maturity were valued using a combination of Level 1and Level 2 inputs.  The Company reviewed the data and assumptions used in pricing the securities by its third party provider to ensure the highest level of significant inputs are derived from market observable data.
	Loans. Level 3 inputs were utilized to value the acquired loan portfolio and included the use of present value techniques employing cash flow estimates and the incorporated assumptions that marketplace participants would use in estimating fair values.  In instances where reliable market information was not available, the Company used its own assumptions in an effort to determine reasonable fair value.  Specifically, the Company utilized three separate fair value analyses we believe a market participant might employ in estimating the entire fair value adjustment required under ASC 820-10.  The three separate fair valuation methodologies used are: 1) interest rate loan fair value analysis, 2) general credit fair value adjustment, and 3) specific credit fair value adjustment.
	To prepare the interest rate fair value analysis, loans were assembled into groupings by characteristics such as loan type, term, collateral and rate.  Market rates for similar loans were obtained from various external data sources and reviewed by Company management for reasonableness.  The average of these rates was used as the fair value interest rate a market participant would utilize.  A present value approach was utilized to calculate the interest rate fair value adjustment.
	The general credit fair value adjustment was calculated using a two part general credit fair value analysis; 1) expected lifetime losses and 2) estimated fair value adjustment for qualitative factors.  The expected lifetime losses were calculated using an average of historical losses of the Company, the acquired banks and peer banks.  The adjustment related to qualitative factors was impacted by general economic conditions and the risk related to lack of familiarity with the originator's underwriting process.
	To calculate the specific credit fair value adjustment the Company reviewed the acquired loan portfolio for loans meeting the definition of an impaired loan as defined by ASC 310-30.  Loans meeting this criteria were reviewed by comparing the contractual cash flows to expected collectible cash flows.  The aggregate expected cash flows less the acquisition date fair value will result in an accretable yield amount.  The accretable yield amount will be recognized over the life of the loans on a level yield basis as an adjustment to yield.
	Deposits / Core Deposit Premium.Core deposit premium represents the value assigned to demand, interest checking, money market and savings accounts acquired as part of an acquisition.  The core deposit premium value represents the future economic benefit, including the present value of future tax benefits, of the potential cost savings from acquiring core deposits as part of an acquisition compared to the cost alternative funding sources and is valued utilizing Level 1 inputs.
	Certificates of deposit (time deposits) are not considered to be core deposits as they are assumed to have a low expected average life upon acquisition.  The fair value of certificates of deposits represents the present value of the certificates' expected contractual payments discounted by market rates for similar CDs and is valued utilizing Level 2 inputs.
	Borrowed Funds.The present value approach was used to determine the fair value of the borrowed funds acquired during 2014 and 2013.  The fair value of the liability represents the present value of the expected payments using the current rate of a replacement borrowing of the same type and remaining term to maturity and is valued utilizing Level 2 inputs.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings Per Share
	The following is a summary of our earnings per share calculations and reconciliation of basic to diluted earnings per share.
		Three Months Ended September 30,
		2014					2013
		Income		Shares	Per  Share		Income		Shares	Per  Share
					Amount					Amount
		(Dollars in thousands, except per share data)
	Net Income	$	39,041				$	29,281
	Basic earnings per share:
	Income available to common stockholders	$	39,041	343,493,691	$	0.11	$	29,281	275,229,343	$	0.11
	Effect of dilutive common stock equivalents (1)	—		3,279,852			—		3,632,571
	Diluted earnings per share:
	Income available to common stockholders	$	39,041	346,773,543	$	0.11	$	29,281	278,861,914	$	0.11
	(1) For the three months ended September 30, 2014 and 2013, there were 28,713 and 495,771 equity awards, respectively, that could potentially dilute basic earnings per share in the future that were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the periods presented.
		Nine Months Ended September 30,
		2014					2013
		Income		Shares	Per  Share		Income		Shares	Per  Share
					Amount					Amount
		(Dollars in thousands, except per share data)
	Net Income	$	88,644				$	84,524
	Basic earnings per share:
	Income available to common stockholders	$	88,644	344,494,901	$	0.26	$	84,524	274,801,234	$	0.31
	Effect of dilutive common stock equivalents (1)	—		3,617,839			—		3,205,648
	Diluted earnings per share:
	Income available to common stockholders	$	88,644	348,112,740	$	0.25	$	84,524	278,006,882	$	0.3
	(1) For the nine months ended September 30, 2014 and 2013, there were 143,463 and 495,771 equity awards, respectively, that could potentially dilute basic earnings per share in the future that were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the periods presented.

Securities

Securities	9 Months Ended
	Sep. 30, 2014
Investments, Debt and Equity Securities [Abstract]	'
Securities	'
	Securities
	The following tables present the carrying value, gross unrealized gains and losses and estimated fair value for available-for-sale securities and the amortized cost, net unrealized losses, gross unrecognized gains and losses and estimated fair value for held-to-maturity securities as of the dates indicated:
		At September 30, 2014
		Carrying value				Gross			Gross			Estimated
						unrealized			unrealized losses			fair value
						gains
		(In thousands)
	Available-for-sale:
	Equity securities	$	6,887			1,504			—			8,391
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	445,209				5,088			(1,970	)		448,327
	Federal National Mortgage Association	585,577				5,706			(2,180	)		589,103
	Government National Mortgage Association	140				1			—			141
	Total mortgage-backed securities available-for-sale	1,030,926				10,795			(4,150	)		1,037,571
	Total available-for-sale securities	$	1,037,813			12,299			(4,150	)		1,045,962
		At September 30, 2014
		Amortized cost				Net unrealized losses (1)			Carrying value			Gross			Gross		Estimated
												unrecognized			unrecognized		fair value
												gains (2)			losses (2)
		(In thousands)
	Held-to-maturity:
	Debt securities:
	Government-sponsored enterprises	$	4,427			—			4,427			1			(4	)	4,424
	Municipal bonds	15,359				—			15,359			943			—		16,302
	Corporate and other debt securities	58,087				(25,384	)		32,703			32,385			(401	)	64,687
	Total debt securities held-to-maturity	77,873				(25,384	)		52,489			33,329			(405	)	85,413
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	480,817				(4,139	)		476,678			2,448			(3,574	)	475,552
	Federal National Mortgage Association	960,560				(4,219	)		956,341			5,379			(3,930	)	957,790
	Government National Mortgage Association	28,635				—			28,635			—			(232	)	28,403
	Federal housing authorities	231				—			231			—			—		231
	Total mortgage-backed securities held-to-maturity	1,470,243				(8,358	)		1,461,885			7,827			(7,736	)	1,461,976
	Total held-to-maturity securities	$	1,548,116			(33,742	)		1,514,374			41,156			(8,141	)	1,547,389
	(1) Net unrealized losses of held-to-maturity corporate and other debt securities represent the other than temporary charge related to other non credit factors and is being amortized through accumulated other comprehensive income over the remaining life of the securities. For mortgage-backed securities, it represents the net loss on previously designated available-for sale securities transferred to held-to-maturity at fair value and is being amortized through accumulated other comprehensive income over the remaining life of the securities.
	(2) Unrecognized gains and losses of held-to-maturity securities are not reflected in the financial statements, as they represent fair value fluctuations from the later of: (i) the date a security is designated as held-to-maturity; or (ii) the date that an OTTI charge is recognized on a held-to-maturity security, through the date of the balance sheet.
		At December 31, 2013
		Carrying value				Gross			Gross			Estimated
						unrealized			unrealized			fair value
						gains			losses
		(In thousands)
	Available-for-sale:
	Equity securities	$	7,148			1,315			(19	)		8,444
	Debt securities:
	Government-sponsored enterprises	3,004				—			—			3,004
	Corporate and other debt securities	670				—			—			670
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	362,876				4,055			(3,843	)		363,088
	Federal National Mortgage Association	408,794				4,620			(3,855	)		409,559
	Government National Mortgage Association	267				—			—			267
	Total mortgage-backed securities available-for-sale	771,937				8,675			(7,698	)		772,914
	Total available-for-sale securities	$	782,759			9,990			(7,717	)		785,032
		At December 31, 2013
		Amortized cost				Net unrealized losses (1)			Carrying Value			Gross			Gross		Estimated
												unrecognized			unrecognized		fair value
												gains (2)			losses (2)
		(In thousands)
	Held-to-maturity:
	Debt securities:
	Government-sponsored enterprises	$	4,542			—			4,542			—			(18	)	4,524
	Municipal bonds	14,992				—			14,992			487			—		15,479
	Corporate and other debt securities	56,072				(26,391	)		29,681			20,315			(1,392	)	48,604
	Total debt securities held-to-maturity	75,606				(26,391	)		49,215			20,802			(1,410	)	68,607
	Mortgage-backed securities:
Federal Home Loan Mortgage Corporation	308,890				(5,273	)		303,617			1,901			(7,646	)	297,872
Federal National Mortgage Association	483,916				(5,300	)		478,616			3,001			(9,403	)	472,214
Federal housing authorities	371				—			371			—			—		371
Total mortgage-backed securities held-to-maturity	793,177				(10,573	)		782,604			4,902			(17,049	)	770,457
Total held-to-maturity securities	$	868,783			(36,964	)		831,819			25,704			(18,459	)	839,064
(1) Net unrealized losses of held-to-maturity corporate and other debt securities represent the other than temporary charge related to other non credit factors and is being amortized through accumulated other comprehensive income over the remaining life of the securities. For mortgage-backed securities, it represents the net loss on previously designated available-for sale securities transferred to held-to-maturity at fair value and is being amortized through accumulated other comprehensive income over the remaining life of the securities.
(2) Unrecognized gains and losses of held-to-maturity securities are not reflected in the financial statements, as they represent fair value fluctuations from the later of: (i) the date a security is designated as held-to-maturity; or (ii) the date that an OTTI charge is recognized on a held-to-maturity security, through the date of the balance sheet.
Gross unrealized losses on securities and the estimated fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2014 and December 31, 2013, was as follows:
	September 30, 2014
	Less than 12 months							12 months or more						Total
	Estimated				Unrealized			Estimated			Unrealized			Estimated		Unrealized
	fair value				losses			fair value			losses			fair value		losses
	(In thousands)
Available-for-sale:
Mortgage-backed securities:
Federal Home Loan Mortgage Corporation	$	139,038			710			85,556			1,260			224,594		1,970
Federal National Mortgage Association	93,214				600			73,727			1,580			166,941		2,180
Total mortgage-backed securities available-for-sale	232,252				1,310			159,283			2,840			391,535		4,150
Total available-for-sale	$	232,252			1,310			159,283			2,840			391,535		4,150
Held-to-maturity:
Debt securities:
Government-sponsored enterprises	4,324				4			—			—			4,324		4
Corporate and other debt securities	—				—			144			401			144		401
Total debt securities held-to-maturity	4,324				4			144			401			4,468		405
Mortgage-backed securities:
Federal Home Loan Mortgage Corporation	209,681				1,570			107,499			2,004			317,180		3,574
Federal National Mortgage Association	447,197				1,560			102,540			2,370			549,737		3,930
Government National Mortgage Association	28,403				232			—			—			28,403		232
Total mortgage-backed securities held-to-maturity	685,281				3,362			210,039			4,374			895,320		7,736
Total held-to-maturity	$	689,605			3,366			210,183			4,775			899,788		8,141
Total	$	921,857			4,676			369,466			7,615			1,291,323		12,291
	December 31, 2013
	Less than 12 months							12 months or more						Total
	Estimated				Unrealized			Estimated			Unrealized			Estimated		Unrealized
	fair value				losses			fair value			losses			fair value		losses
	(In thousands)
Available-for-sale:
Equity securities	$	506			19			—			—			506		19
Mortgage-backed securities:
Federal Home Loan Mortgage Corporation	164,306				3,843			—			—			164,306		3,843
Federal National Mortgage Association	210,493				3,855			—			—			210,493		3,855
Total mortgage-backed securities available-for-sale	374,799				7,698			—			—			374,799		7,698
Total available-for-sale	$	375,305			7,717			—			—			375,305		7,717
Held-to-maturity:
Debt securities:
Government-sponsored enterprises	$	4,524			18			—			—			4,524		18
Corporate and other debt securities	2,391				645			376			747			2,767		1,392
Total debt securities held-to-maturity	6,915				663			376			747			7,291		1,410
Mortgage-backed securities:
Federal Home Loan Mortgage Corporation	245,491				6,989			20,871			657			266,362		7,646
Federal National Mortgage Association	390,750				9,147			4,454			256			395,204		9,403
Total mortgage-backed securities held-to-maturity	636,241				16,136			25,325			913			661,566		17,049
Total held-to-maturity	$	643,156			16,799			25,701			1,660			668,857		18,459
Total	$	1,018,461			24,516			25,701			1,660			1,044,162		26,176
The majority of the gross unrealized losses relate to our mortgage-backed security portfolio which are issued by U.S. Government Sponsored Enterprises. The fair value of these securities have been positively impacted by the recent decrease in intermediate-term market interest rates. The remaining gross unrealized losses relate to our corporate and other debt securities whose estimated fair value has been adversely impacted by the current economic environment, current market interest rates, wider credit spreads and credit deterioration subsequent to the purchase of these securities. The portfolio consists of 34 pooled trust preferred securities (“TruPS”), principally issued by banks. At September 30, 2014, the amortized cost and estimated fair values of the trust preferred portfolio was $32.7 million and $64.7 million, respectively with one security in an unrealized loss position (see "OTTI" for further discussion). The Company has no intent to sell, nor is it more likely than not that the Company will be required to sell, the debt security in an unrealized loss position before the recovery of its amortized cost basis or maturity.
The following table summarizes the Company’s pooled trust preferred securities as of September 30, 2014 excluding one trust preferred security which the Company previously recorded a net other-than-temporary impairment charge which resulted in a zero net book balance for the security. At September 30, 2014, the security had a fair value of $38,000. The Company does not own any single-issuer trust preferred securities.
(Dollars in 000’s)
Description	Class		Book Value				Fair Value				Unrecognized				Number of		Current		Expected		Excess		Moody’s/
											Gains (Losses)				Issuers		Deferrals and		Deferrals and		Subordination		Fitch Credit
															Currently		Defaults as a		Defaults as %		as a % of		Ratings
															Performing		% of Total		of Remaining		Performing
																	Collateral (1)		Collateral (2)		Collateral (3)
Alesco PF II	B1		$	327			$	481.7			$	154.6			30		11.8	%	8.8	%	—	%	Caa3 / C
Alesco PF III	B1		813.1				1,782.00				968.9				31		11.1	%	9	%	—	%	Ca / C
Alesco PF III	B2		325.3				712.8				387.5				31		11.1	%	9	%	—	%	Ca / C
Alesco PF IV	B1		401.2				697.8				296.6				38		1.2	%	11	%	—	%	C / C
Alesco PF VI	C2		718.4				1,659.70				941.3				44		7.6	%	12.1	%	—	%	Ca / C
MM Comm III	B		156.6				3,221.00				3,064.50				5		30	%	9.3	%	12.8	%	Ba1 / BB
MMCaps XVII	C1		1,647.40				2,236.50				589.1				33		13	%	7.4	%	—	%	Caa1 / C
MMCaps XIX	C		545.1				144				(401.1		)		34		25.4	%	11.9	%	—	%	C / C
Tpref I	B		1,552.40				1,931.40				379				7		51.9	%	8.7	%	—	%	Ca / WD
Tpref II	B		4,156.50				5,324.40				1,168.00				18		34.8	%	9.9	%	—	%	Caa3 / C
US Cap I	B2		917.2				1,980.00				1,062.80				30		12.5	%	7.1	%	—	%	B3 / C
US Cap I	B1		2,733.50				5,940.00				3,206.50				30		12.5	%	7.1	%	—	%	B3 / C
US Cap II	B1		1,429.90				2,899.00				1,469.10				35		15.6	%	8.3	%	—	%	B3 / C
US Cap III	B1		1,855.10				2,789.00				933.9				30		16	%	9.8	%	—	%	Caa2 / C
Trapeza XII	C1		1,782.70				3,117.70				1,334.90				33		24.3	%	11.4	%	—	%	C / C
Trapeza XIII	C1		1,930.00				3,921.00				1,991.00				48		18.4	%	10.2	%	—	%	Ca / CC
Pretsl XXII	A1		556.2				1,517.10				960.9				71		19.5	%	12.4	%	31.4	%	A1 / A
Pretsl XXIV	A1		1,898.10				4,508.00				2,609.90				60		26.1	%	16.2	%	24.9	%	A3 / BBB
Pretsl IV	Mez		147.4				221.2				73.8				6		18.1	%	7.5	%	19	%	B1 / BB
Pretsl V	Mez		17.1				17.1				—				—		65.5	%	—	%	—	%	C / WD
Pretsl VII	Mez		400.9				1,876.50				1,475.60				11		47.8	%	13	%	—	%	Ca / WD
Pretsl XV	B1		934.6				2,180.20				1,245.70				57		11.6	%	13.2	%	—	%	Caa3 / C
Pretsl XVII	C		743.5				1,594.60				851.2				37		19	%	16.2	%	—	%	C / CC
Pretsl XVIII	C		1,643.60				2,845.30				1,201.70				55		22	%	9.9	%	—	%	Ca / C
Pretsl XIX	C		722.9				1,254.20				531.2				52		10.6	%	13.2	%	—	%	C / C
Pretsl XX	C		407.6				729.9				322.3				45		16.8	%	15.5	%	—	%	Ca / C
Pretsl XXI	C1		952.8				2,985.30				2,032.60				53		19	%	12.1	%	—	%	Ca / C
Pretsl XXIII	A-FP		702				2,134.60				1,432.60				93		19.9	%	13.1	%	18.3	%	Aa2 / BBB
Pretsl XXIV	C1		690.7				764.8				74				60		26.1	%	16.2	%	—	%	C / C
Pretsl XXV	C1		439.2				928.2				489				52		25.7	%	12.9	%	—	%	C / C
Pretsl XXVI	C1		525.2				1,150.30				625.1				54		24.1	%	12.8	%	—	%	C / C
Pref Pretsl IX	B2		405.3				726.6				321.3				29		24	%	8.9	%	—	%	B3 / C
Pretsl X	C2		224.8				377				152.2				32		26.2	%	10.6	%	—	%	Caa1 / C
			$	32,703.30			$	64,648.90			$	31,945.70
-1	At September 30, 2014, current deferrals and defaults as a percent of collateral ranged from 1.2% to 65.5%.
-2	At September 30, 2014, expected deferrals and defaults as a percent of remaining collateral ranged from 0.0% to 23.4%.
-3	Excess subordination represents the amount of remaining performing collateral that is in excess of the amount needed to pay off a specified class of bonds and all classes senior to the specified class. Excess subordination reduces an investor’s potential risk of loss on their investment as excess subordination absorbs principal and interest shortfalls in the event underlying issuers are not able to make their contractual payments.
A portion of the Company’s securities are pledged to secure borrowings. The contractual maturities of mortgage-backed securities are generally less than 20 years; with effective lives expected to be shorter due to anticipated prepayments. Expected maturities may differ from contractual maturities due to prepayment or early call privileges of the issuer, therefore, mortgage-backed securities are not included in the following table. The amortized cost and estimated fair value of debt securities at September 30, 2014, by contractual maturity, are shown below.
	September 30, 2014
	Carrying Value				Estimated
					fair value
	(In thousands)
Due in one year or less	$	10,074			10,075
Due after one year through five years	4,707				4,704
Due after five years through ten years	—				—
Due after ten years	37,708				70,634
Total	$	52,489			85,413
Other-Than-Temporary Impairment (“OTTI”)
We conduct a quarterly review and evaluation of the securities portfolio to determine if the value of any security has declined below its cost or amortized cost, and whether such decline is other-than-temporary. If a determination is made that a debt security is other-than-temporarily impaired, the Company will estimate the amount of the unrealized loss that is attributable to credit and all other non-credit related factors. The credit related component will be recognized as an other-than-temporary impairment charge in non-interest income. The non-credit related component will be recorded as an adjustment to accumulated other comprehensive income, net of tax.
Through the use of a valuation specialist, we evaluate the credit and performance of each underlying issuer of our trust preferred securities by deriving probabilities and assumptions for default, recovery and prepayment/amortization for the expected cash flows for each security. At September 30, 2014, management deemed that the present value of projected cash flows for each security was greater than the book value and did not recognized any additional OTTI charges for the period ended September 30, 2014. At September 30, 2014, non credit-related OTTI recorded on the previously impaired pooled trust preferred securities was $25.4 million ($15.0 million after-tax).
The following table presents the changes in the credit loss component of the impairment loss of debt securities that the Company has written down for such loss as an other-than-temporary impairment recognized in earnings.
	Three Months Ended September 30,							Nine Months Ended September 30,
	2014				2013			2014				2013
	(In thousands)
Balance of credit related OTTI, beginning of period	$	110,522			112,886			$	112,235			114,514
Additions:
Initial credit impairments	—				—			—				—
Subsequent credit impairments	—				—			—				—
Reductions:
Accretion of credit loss impairment due to an increase in expected cash flows	(853		)		(814	)		(2,566		)		(2,442	)
Balance of credit related OTTI, end of period	$	109,669			112,072			$	109,669			112,072
The credit loss component of the impairment loss represents the difference between the present value of expected future cash flows and the amortized cost basis of the securities prior to considering credit losses. The beginning balance represents the credit loss component for debt securities for which other-than-temporary impairment occurred prior to the period presented. If other-than-temporary impairment is recognized in earnings for credit impaired debt securities, they would be presented as additions in two components based upon whether the current period is the first time a debt security was credit impaired (initial credit impairment) or is not the first time a debt security was credit impaired (subsequent credit impairments). The credit loss component is reduced if the Company sells, intends to sell or believes it will be required to sell previously credit impaired debt securities. Additionally, the credit loss component is reduced if (i) the Company receives cash flows in excess of what it expected to receive over the remaining life of the credit impaired debt security, (ii) the security matures or (iii) the security is fully written down.
Realized Gains and Losses
Gains and losses on the sale of all securities are determined using the specific identification method. For the three months ended September 30, 2014, the Company recognized net gains on available-for-sale securities of $29,000 on capital distributions of equity securities from the available-for-sale portfolio. For the nine months ended September 30, 2014 the Company recognized net gains on available-for-sale securities of $669,000, of which $145,000 were related to capital distributions of equity securities from the available-for-sale portfolio. In December 2013, regulatory agencies adopted a rule on the treatment of certain collateralized debt obligations backed by trust preferred securities to implement sections of the Dodd-Frank Wall Street Reform and Consumer Protection Act, known as the Volcker Rule. As a result of the evaluation of the impact of the Volcker Rule, the Company reclassified one trust preferred security to available-for-sale. The Company sold the security during the nine months ended September 30, 2014 resulting in gross realized gains of $474,000. For the three and nine months ended September 30, 2014, there were no sales of securities from held-to-maturity portfolio, however for the nine months ended September 30, 2014, the Company recognized a gain of $50,000 on a TruP security which was entirely liquidated by its Trustee. For the three and nine months ended September 30, 2014, there were no losses recognized.
For the three months ended September 30, 2013, the Company realized a $15,000 gain on capital distributions of equity securities from the available-for-sale portfolio. For the three months ended September 30, 2013, there were no losses recognized. For the nine months ended September 30, 2013, proceeds from sales of securities from the available-for-sale portfolio were $56.0 million, which resulted in gross realized gains of $846,100 and $162,300 gross realized losses as well as $22,000 of gains on capital distributions of equity securities. There were no sales of securities from the held-to-maturity portfolio for the three and nine months ended September 30, 2013.

Loans_Receivable_Net

Loans Receivable, Net	9 Months Ended
	Sep. 30, 2014
Receivables [Abstract]	'
Loans Receivable, Net	'
	Loans Receivable, Net
	The detail of the loan portfolio as of September 30, 2014 and December 31, 2013 was as follows:
		September 30,				December 31,
		2014				2013
		(In thousands)
	Residential mortgage loans	$	5,826,301			5,692,810
	Multi-family loans	4,715,936				3,985,517
	Commercial real estate loans	2,802,403				2,485,937
	Construction loans	154,945				194,542
	Consumer and other loans	435,246				403,929
	Commercial and industrial loans	412,879				265,836
	Total loans excluding PCI loans	14,347,710				13,028,571
	PCI loans	20,580				36,047
	Net unamortized premiums and deferred loan costs (1)	(7,883		)		(8,146	)
	Allowance for loan losses	(191,084		)		(173,928	)
	Net loans	$	14,169,323			12,882,544
	(1) Included in unamortized premiums and deferred loan costs are accretable purchase accounting adjustments in connection with loans acquired.
	Purchased Credit-Impaired Loans
	Purchased Credit-Impaired ("PCI") loans, are loans acquired at a discount that is due, in part, to credit quality. PCI loans are accounted for in accordance with ASC Subtopic 310-30 and are initially recorded at fair value as determined by the present value of expected future cash flows with no valuation allowance reflected in the allowance for loan losses.
	The following table presents information regarding the estimates of the contractually required payments, the cash flows expected to be collected and the estimated fair value of the PCI loans acquired in the Gateway Financial acquisition as of January 10, 2014:
		10-Jan-14
		(In thousands)
	Contractually required principal and interest	$	4,172
	Contractual cash flows not expected to be collected (non-accretable difference)	(1,024		)
	Expected cash flows to be collected	3,148
	Interest component of expected cash flows (accretable yield)	(216		)
	Fair value of acquired loans	$	2,932
	The following table presents information regarding the estimates of the contractually required payments, the cash flows expected to be collected and the estimated fair value of the PCI loans acquired in the Roma Financial acquisition as of December 6, 2013:
		6-Dec-13
		(In thousands)
	Contractually required principal and interest	$	46,231
	Contractual cash flows not expected to be collected (non-accretable difference)	(16,441		)
	Expected cash flows to be collected	29,790
	Interest component of expected cash flows (accretable yield)	(3,425		)
	Fair value of acquired loans	$	26,365
	The following table presents changes in the accretable yield for PCI loans during the three and nine months ended September 30, 2014 and 2013:
		Three Months Ended September 30,							Nine Months Ended September 30,
		2014				2013			2014				2013
		(In thousands)
	Balance, beginning of period	$	1,401			1,212			$	4,154			1,457
	Acquisitions	—				—			216				—
	Accretion (1)	(193		)		(135	)		(3,162		)		(380	)
	Net reclassification from non-accretable difference	—				—			—				—
	Balance, end of period	$	1,208			1,077			$	1,208			1,077
	(1) Includes the removal of $1.9 million accretable mark on PCI loans sold during the nine months ended September 30, 2014. This transfer had no impact on income for the nine months ended September 30, 2014.
	An analysis of the allowance for loan losses is summarized as follows:
		Three Months Ended September 30,							Nine Months Ended September 30,
		2014				2013			2014				2013
		(In thousands)
	Balance at beginning of the period	$	186,070			154,467			$	173,928			142,172
	Loans charged off	(8,060		)		(2,484	)		(15,163		)		(19,219	)
	Recoveries	4,074				1,046			6,319				2,576
	Net charge-offs	(3,986		)		(1,438	)		(8,844		)		(16,643	)
	Provision for loan losses	9,000				13,750			26,000				41,250
	Balance at end of the period	$	191,084			166,779			$	191,084			166,779
	The allowance for loan losses is the estimated amount considered necessary to cover credit losses inherent in the loan portfolio at the balance sheet date. The allowance is established through the provision for loan losses that is charged against income. In determining the allowance for loan losses, we make significant estimates and therefore, have identified the allowance as a critical accounting policy. The methodology for determining the allowance for loan losses is considered a critical accounting policy by management because of the high degree of judgment involved, the subjectivity of the assumptions used and the potential for changes in the economic environment that could result in changes to the amount of the recorded allowance for loan losses.
	The allowance for loan losses has been determined in accordance with U.S. GAAP, under which we are required to maintain an allowance for probable losses at the balance sheet date. We are responsible for the timely and periodic determination of the amount of the allowance required. We believe that our allowance for loan losses is adequate to cover specifically identifiable losses, as well as estimated losses inherent in our portfolio for which certain losses are probable but not specifically identifiable. Loans acquired are marked to fair value on the date of acquisition with no valuation allowance reflected in the allowance for loan losses. In conjunction with the quarterly evaluation of the adequacy of the allowance for loan loss, the Company performs an analysis on acquired loans to determine whether or not there has been subsequent deterioration in relation to those loans. If deterioration has occurred, the Company will include these loans in their calculation of the allowance for loan loss. For the three and nine months ended September 30, 2014, the Company recorded charge offs related to PCI loans acquired of $419,000 and $1.3 million, respectively.
	Management performs a quarterly evaluation of the adequacy of the allowance for loan losses. The analysis of the allowance for loan losses has two components: specific and general allocations. Specific allocations are made for loans determined to be impaired. A loan is deemed to be impaired if it is a commercial loan with an outstanding balance greater than $1.0 million and on non-accrual status, loans modified in a troubled debt restructuring (“TDR”), and other commercial loans greater than $1.0 million if management has specific information that it is probable they will not collect all amounts due under the contractual terms of the loan agreement. Impairment is measured by determining the present value of expected future cash flows or, for collateral-dependent loans, the fair value of the collateral adjusted for market conditions and selling expenses. The general allocation is determined by segregating the remaining loans, including those loans not meeting the Company’s definition of an impaired loan, by type of loan, risk rating (if applicable) and payment history. In addition, the Company also considers whether residential loans are fixed or adjustable rate as adjustable rate loans are subject to more credit risk if interest rates rise. We also analyze historical loss experience, delinquency trends, general economic conditions, geographic concentrations, and industry and peer comparisons. This analysis establishes a range of factors that are applied to the loan groups to determine the amount of the general allocations. This evaluation is based on market data but is inherently subjective as it requires material estimates that may be susceptible to significant revisions based upon changes in economic and real estate market conditions. Actual loan losses may be significantly more than the allowance for loan losses we have established which could have a material negative effect on our financial results.
	On a quarterly basis, management’s Allowance for Loan Loss Committee reviews the current status of various loan assets in order to evaluate the adequacy of the allowance for loan losses. In this evaluation process, specific loans are analyzed to determine their potential risk of loss. This process includes all loans, concentrating on non-accrual and classified loans. Each non-accrual or classified loan is evaluated for potential loss exposure. Any shortfall results in a recommendation of a specific allowance or charge-off if the likelihood of loss is evaluated as probable. To determine the adequacy of collateral on a particular loan, an estimate of the fair value of the collateral is based on the most current appraised value available for real property or a discounted cash flow analysis on a business. This appraised value for real property is then reduced to reflect estimated liquidation expenses.
	The allowance contains reserves identified as unallocated to cover inherent losses within a given loan category which have not been otherwise reviewed or measured on an individual basis. Such reserves include the evaluation of the national and local economy, loan portfolio volumes, the composition and concentrations of credit, credit quality and delinquency trends. These reserves reflect management's attempt to ensure that the overall allowance reflects a margin for imprecision and the uncertainty that is inherent in estimates of probable credit losses.
	The results of this quarterly process are summarized along with recommendations and presented to the Allowance for Loan Loss Committee for their review. Based on these recommendations, loan loss allowances are approved by the Allowance for Loan Loss Committee. All supporting documentation with regard to the evaluation process, loan loss experience, allowance levels and the schedules of classified loans are maintained by the Accounting and Credit Risk Departments. A summary of loan loss allowances and the methodology employed to determine such allowances is presented to the Board of Directors on a quarterly basis.
	Our primary lending emphasis has been the origination of commercial real estate loans, multi-family loans, commercial and industrial loans and the origination and purchase of residential mortgage loans. We also originate home equity loans and home equity lines of credit. These activities resulted in a concentration of loans secured by real property and businesses located in New Jersey and New York. Based on the composition of our loan portfolio, we believe the primary risks are increases in interest rates, a decline in the general economy, and declines in real estate market values in New Jersey, New York and surrounding states. Any one or combination of these events may adversely affect our loan portfolio resulting in increased delinquencies, loan losses and future levels of loan loss provisions. We consider it important to maintain the ratio of our allowance for loan losses to total loans at an adequate level given current economic conditions and the composition of the portfolio. As a substantial amount of our loan portfolio is collateralized by real estate, appraisals of the underlying value of property securing loans are critical in determining the amount of the allowance required for specific loans. Assumptions for appraisal valuations are instrumental in determining the value of properties. Overly optimistic assumptions or negative changes to assumptions could significantly impact the valuation of a property securing a loan and the related allowance determined. The assumptions supporting such appraisals are carefully reviewed by management to determine that the resulting values reasonably reflect amounts realizable on the related loans.
	For commercial real estate, multi-family and construction loans, the Company obtains an appraisal for all collateral dependent loans upon origination and an updated appraisal in the event interest or principal payments are 90 days delinquent or when the timely collection of such income is considered doubtful. This is done in order to determine the specific reserve needed upon initial recognition of a collateral dependent loan as non-accrual and/or impaired. In subsequent reporting periods, as part of the allowance for loan loss process, the Company reviews each collateral dependent commercial real estate loan previously classified as non-accrual and/or impaired and assesses whether there has been an adverse change in the collateral value supporting the loan. The Company utilizes information from its commercial lending officers, its credit department and loan workout department’s knowledge of changes in real estate conditions in our lending area to identify if possible deterioration of collateral value has occurred. Based on the severity of the changes in market conditions, management determines if an updated appraisal is warranted or if downward adjustments to the previous appraisal are warranted. If it is determined that the deterioration of the collateral value is significant enough to warrant ordering a new appraisal, an estimate of the downward adjustments to the existing appraised value is used in assessing if additional specific reserves are necessary until the updated appraisal is received.
For homogeneous residential mortgage loans, the Company’s policy is to obtain an appraisal upon the origination of the loan and an updated appraisal in the event a loan becomes 90 days delinquent. Thereafter, the appraisal is updated every two years if the loan remains in non-performing status and the foreclosure process has not been completed. Management adjusts the appraised value of residential loans to reflect estimated selling costs and declines in the real estate market.
Management believes the potential risk for outdated appraisals for impaired and other non-performing loans has been mitigated due to the fact that the loans are individually assessed to determine that the loan’s carrying value is not in excess of the fair value of the collateral. Loans are generally charged off after an analysis is completed which indicates that collectability of the full principal balance is in doubt.
Our allowance for loan losses reflects probable losses considering, among other things, the weak economic conditions, the actual growth and change in composition of our loan portfolio, the level of our non-performing loans and our charge-off experience. We believe the allowance for loan losses reflects the inherent credit risk in our portfolio.
Although we believe we have established and maintained the allowance for loan losses at adequate levels, additions may be necessary if the current economic environment continues or deteriorates. Management uses the best information available; however, the level of the allowance for loan losses remains an estimate that is subject to significant judgment and short-term change. In addition, the Federal Deposit Insurance Corporation and the New Jersey Department of Banking and Insurance, as an integral part of their examination process, will periodically review our allowance for loan losses. Such agencies may require us to recognize adjustments to the allowance based on their judgments about information available to them at the time of their examination.
The following tables present the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of September 30, 2014 and December 31, 2013:
	September 30, 2014
	Residential				Multi-			Commercial			Construction			Commercial			Consumer			Unallocated	Total
	Mortgage Loans				Family Loans			Real Estate Loans			Loans			and Industrial			and Other
														Loans			Loans
	(In thousands)
Allowance for loan losses:
Beginning balance-December 31, 2013	$	51,760			42,103			46,657			8,947			9,273			2,161			13,027	173,928
Charge-offs	(5,710		)		(292	)		(5,520	)		(505	)		(2,447	)		(689	)		—	(15,163	)
Recoveries	1,255				3,715			187			782			380			—			—	6,319
Provision	1,805				3,389			11,437			(3,516	)		10,366			1,127			1,392	26,000
Ending balance-September 30, 2014	$	49,110			48,915			52,761			5,708			17,572			2,599			14,419	191,084
Individually evaluated for impairment	$	1,867			—			—			—			—			—			—	1,867
Collectively evaluated for impairment	47,243				48,915			52,761			5,708			17,572			2,599			14,419	189,217
Loans acquired with deteriorated credit quality	—				—			—			—			—			—			—	—
Balance at September 30, 2014	$	49,110			48,915			52,761			5,708			17,572			2,599			14,419	191,084
Loans:
Individually evaluated for impairment	$	23,019			3,550			23,477			15,543			1,473			—			—	67,062
Collectively evaluated for impairment	5,803,282				4,712,386			2,778,926			139,402			411,406			435,246			—	14,280,648
Loans acquired with deteriorated credit quality	5,093				633			9,525			4,810			56			463			—	20,580
Balance at September 30, 2014	$	5,831,394			4,716,569			2,811,928			159,755			412,935			435,709			—	14,368,290
	December 31, 2013
	Residential				Multi-			Commercial			Construction			Commercial			Consumer			Unallocated	Total
	Mortgage Loans				Family Loans			Real Estate Loans			Loans			and Industrial			and Other
														Loans			Loans
	(In thousands)
Allowance for loan losses:
Beginning balance-December 31, 2012	$	45,369			29,853			33,347			16,062			4,094			2,086			11,361	142,172
Charge-offs	(15,508		)		(1,266	)		(1,101	)		(3,424	)		(516	)		(795	)		—	(22,610	)
Recoveries	2,528				219			65			315			604			135			—	3,866
Provision	19,371				13,297			14,346			(4,006	)		5,091			735			1,666	50,500
Ending balance-December 31, 2013	$	51,760			42,103			46,657			8,947			9,273			2,161			13,027	173,928
Individually evaluated for impairment	$	2,066			—			—			—			—			—			—	2,066
Collectively evaluated for impairment	49,694				42,103			46,657			8,947			9,273			2,161			13,027	171,862
Loans acquired with deteriorated credit quality	—				—			—			—			—			—			—	—
Balance at December 31, 2013	$	51,760			42,103			46,657			8,947			9,273			2,161			13,027	173,928
Loans:
Individually evaluated for impairment	$	20,987			15,313			11,713			17,037			1,612			—			—	66,662
Collectively evaluated for impairment	5,671,823				3,970,204			2,474,224			177,505			264,224			403,929			—	12,961,909
Loans acquired with deteriorated credit quality	5,541				691			19,390			7,719			2,586			120			—	36,047
Balance at December 31, 2013	$	5,698,351			3,986,208			2,505,327			202,261			268,422			404,049			—	13,064,618
The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information and current economic trends, among other factors. For non-homogeneous loans, such as commercial and commercial real estate loans the Company analyzes the loans individually by classifying the loans as to credit risk and assesses the probability of collection for each type of class. This analysis is performed on a quarterly basis. The Company uses the following definitions for risk ratings:
Pass - “Pass” assets are well protected by the current net worth and paying capacity of the obligor (or guarantors, if any) or by the fair value, less cost to acquire and sell, of any underlying collateral in a timely manner.
Special Mention - A “Special Mention” asset has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the institution’s credit position at some future date. Special Mention assets are not adversely classified and do not expose an institution to sufficient risk to warrant adverse classification. Residential loans delinquent 30-89 days are considered special mention.
Substandard - A “Substandard” asset is inadequately protected by the current worth and paying capacity of the obligor or by the collateral pledged, if any. Assets so classified must have a well-defined weakness, or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Residential loans delinquent 90 days or greater are considered substandard.
Doubtful - An asset classified “Doubtful” has all the weaknesses inherent in one classified substandard with the added characteristic that the weaknesses make collection or liquidation in full highly questionable and improbable on the basis of currently known facts, conditions, and values.
Loss - An asset or portion thereof, classified “Loss” is considered uncollectible and of such little value that its continuance on the institution’s books as an asset, without establishment of a specific valuation allowance or charge-off, is not warranted. This classification does not necessarily mean that an asset has no recovery or salvage value; but rather, there is much doubt about whether, how much, or when the recovery will occur. As such, it is not practical or desirable to defer the write-off.
The following tables present the risk category of loans as of September 30, 2014 and December 31, 2013 by class of loans excluding PCI loans:
	September 30, 2014
	Pass				Special Mention			Substandard			Doubtful			Loss			Total
	(In thousands)
Residential	$	5,698,848			31,575			95,878			—			—			5,826,301
Multi-family	4,640,667				71,088			4,181			—			—			4,715,936
Commercial real estate	2,708,011				15,980			78,412			—			—			2,802,403
Construction	138,013				1,743			15,189			—			—			154,945
Commercial and industrial	389,146				14,882			8,851			—			—			412,879
Consumer and other	428,879				2,548			3,819			—			—			435,246
Total	$	14,003,564			137,816			206,330			—			—			14,347,710
Need to tag consumer and other
	December 31, 2013
	Pass				Special Mention			Substandard			Doubtful			Loss			Total
	(In thousands)
Residential	$	5,584,728			23,252			84,830			—			—			5,692,810
Multi-family	3,919,808				49,199			16,510			—			—			3,985,517
Commercial real estate	2,389,086				23,739			73,112			—			—			2,485,937
Construction	158,576				7,847			28,119			—			—			194,542
Commercial and industrial	247,983				7,540			10,313			—			—			265,836
Consumer and other	400,890				1,065			1,974			—			—			403,929
Total	$	12,701,071			112,642			214,858			—			—			13,028,571
The following tables present the payment status of the recorded investment in past due loans as of September 30, 2014 and December 31, 2013 by class of loans excluding PCI loans:
	September 30, 2014
	30-59 Days				60-89 Days			Greater			Total Past			Current			Total
								than 90			Due						Loans
								Days									Receivable
	(In thousands)
Residential mortgage	$	22,485			12,362			76,868			111,715			5,714,586			5,826,301
Multi-family	35,728				13,010			1,874			50,612			4,665,324			4,715,936
Commercial real estate	5,259				428			14,645			20,332			2,782,071			2,802,403
Construction	180				1,326			12,805			14,311			140,634			154,945
Commercial and industrial	2,178				503			819			3,500			409,379			412,879
Consumer and other	1,872				676			3,818			6,366			428,880			435,246
Total	$	67,702			28,305			110,829			206,836			14,140,874			14,347,710
	December 31, 2013
	30-59 Days				60-89 Days			Greater			Total Past			Current			Total
								than 90			Due						Loans
								Days									Receivable
	(In thousands)
Residential mortgage	$	17,779			7,358			66,079			91,216			5,601,594			5,692,810
Multi-family	1,408				218			3,588			5,214			3,980,303			3,985,517
Commercial real estate	16,380				10,247			2,091			28,718			2,457,219			2,485,937
Construction	302				527			16,181			17,010			177,532			194,542
Commercial and industrial	5,871				287			775			6,933			258,903			265,836
Consumer and other	897				168			1,973			3,038			400,891			403,929
Total	$	42,637			18,805			90,687			152,129			12,876,442			13,028,571
The following table presents non-accrual loans excluding PCI loans at the dates indicated:
	September 30, 2014							December 31, 2013
	# of loans			amount				# of loans			amount
	(Dollars in thousands)
Non-accrual:
Residential and consumer	383			$	85,888			304			$	74,282
Construction	6			12,806				18			16,181
Multi-family	1			1,874				5			5,905
Commercial real estate	29			14,645				12			2,711
Commercial and industrial	4			819				4			1,281
Total non-accrual loans	423			$	116,032			343			$	100,360
Included in the non-accrual table above are TDR loans whose payment status is current but the Company has classified as non-accrual as the loans have not maintained their current payment status for six consecutive months under the restructured terms and therefore do not meet the criteria for accrual status. As of September 30, 2014, these loans are comprised of 7 residential TDR loans totaling $1.9 million. There were 9 residential TDR loans totaling $3.3 million which were also 30-89 days delinquent and classified as non-accrual. As of December 31, 2013, these loans are comprised of 14 residential TDR loans totaling $4.6 million, 1 multi-family TDR loan for $2.3 million, 1 commercial TDR loan for $620,000 and 1 commercial and industrial TDR loan for $506,000. There were 5 residential TDR loans totaling $1.6 million which were also 30-89 days delinquent and classified as non-accrual. The Company has no loans past due 90 days or more delinquent that are still accruing interest. PCI loans are excluded from non-accrual loans, as they are recorded at fair value based on the present value of expected future cash flows. As of September 30, 2014, PCI loans with a carrying value of $20.6 million included $11.2 million which were current and $9.4 million 90 days or more delinquent. As of December 31, 2013, PCI loans totaled $36.0 million of which $19.6 million were current and $16.4 million were 90 days or more delinquent.
At September 30, 2014 and December 31, 2013, loans meeting the Company’s definition of an impaired loan were primarily collateral dependent loans which totaled $67.1 million and $66.7 million, respectively, with allocations of the allowance for loan losses of $1.9 million and $2.1 million, respectively. During the three months ended September 30, 2014 and 2013, interest income received and recognized on these loans totaled $678,000 and $508,000, respectively. During the nine months ended September 30, 2014 and 2013, interest income received and recognized on these loans totaled $1.9 million and $1.6 million, respectively.
The following tables present loans individually evaluated for impairment by portfolio segment as of September 30, 2014 and December 31, 2013:
	September 30, 2014
	Recorded				Unpaid Principal			Related			Average			Interest
	Investment				Balance			Allowance			Recorded			Income
											Investment			Recognized
	(In thousands)
With no related allowance:
Residential mortgage	$	6,578			8,946			—			5,898			318
Multi-family	3,550				7,298			—			7,547			99
Commercial real estate	23,477				28,855			—			15,788			695
Construction	15,543				16,737			—			16,169			326
Commercial and industrial	1,473				1,473			—			1,560			66
With an allowance recorded:
Residential mortgage	16,441				16,792			1,867			16,680			381
Multi-family	—				—			—			—			—
Commercial real estate	—				—			—			—			—
Construction	—				—			—			—			—
Commercial and industrial	—				—			—			—			—
Total:
Residential mortgage	23,019				25,738			1,867			22,578			699
Multi-family	3,550				7,298			—			7,547			99
Commercial real estate	23,477				28,855			—			15,788			695
Construction	15,543				16,737			—			16,169			326
Commercial and industrial	1,473				1,473			—			1,560			66
Total impaired loans	$	67,062			80,101			1,867			63,642			1,885
	December 31, 2013
	Recorded				Unpaid Principal			Related			Average			Interest
	Investment				Balance			Allowance			Recorded			Income
											Investment			Recognized
	(In thousands)
With no related allowance:
Residential mortgage	$	3,924			5,607			—			3,330			190
Multi-family	15,313				28,681			—			15,405			428
Commercial real estate	11,713				12,223			—			11,538			679
Construction	17,037				26,642			—			19,157			198
Commercial and industrial	1,612				1,612			—			1,490			105
With an allowance recorded:
Residential mortgage	17,063				17,457			2,066			15,880			753
Multi-family	—				—			—			—			—
Commercial real estate	—				—			—			—			—
Construction	—				—			—			—			—
Commercial and industrial	—				—			—			—			—
Total:
Residential mortgage	20,987				23,064			2,066			19,210			943
Multi-family	15,313				28,681			—			15,405			428
Commercial real estate	11,713				12,223			—			11,538			679
Construction	17,037				26,642			—			19,157			198
Commercial and industrial	1,612				1,612			—			1,490			105
Total impaired loans	$	66,662			92,222			2,066			66,800			2,353
The average recorded investment is the annual average calculated based upon the ending quarterly balances. The interest income recognized is the year to date interest income recognized on a cash basis.
Troubled Debt Restructurings
On a case-by-case basis, the Company may agree to modify the contractual terms of a borrower’s loan to remain competitive and assist customers who may be experiencing financial difficulty, as well as preserve the Company’s position in the loan. If the borrower is experiencing financial difficulties and a concession has been made at the time of such modification, the loan is classified as a troubled debt restructured loan ("TDR").
Substantially all of our troubled debt restructured loan modifications involve lowering the monthly payments on such loans through either a reduction in interest rate below a market rate, an extension of the term of the loan or a combination of these two methods. These modifications rarely result in the forgiveness of principal or accrued interest. In addition, we frequently obtain additional collateral or guarantor support when modifying commercial loans. Non-accruing restructured loans may be returned to accrual status when there has been a sustained period of repayment performance (generally six consecutive months of payments) and both principal and interest are deemed collectible.
The following tables present the total troubled debt restructured loans at September 30, 2014 and December 31, 2013 excluding PCI loans:
	September 30, 2014
	Accrual							Non-accrual							Total
	# of loans			Amount				# of loans			Amount				# of loans			Amount
	(Dollars in thousands)
Residential mortgage	41			$	14,578			27			$	8,453			68			$	23,031
Multi-family	2			1,677				—			—				2			1,677
Commercial real estate	8			14,445				1			3,208				9			17,653
Commercial and industrial	2			1,473				—			—				2			1,473
Construction	2			3,058				—			—				2			3,058
	55			$	35,231			28			$	11,661			83			$	46,892
	December 31, 2013
	Accrual							Non-accrual							Total
	# of loans			Amount				# of loans			Amount				# of loans			Amount
	(Dollars in thousands)
Residential mortgage	35			$	12,975			26			$	8,021			61			$	20,996
Multi-family	4			9,844				1			2,317				5			12,161
Commercial real estate	7			11,093				1			620				8			11,713
Commercial and industrial	1			1,106				1			506				2			1,612
Construction	3			4,552				—			—				3			4,552
	50			$	39,570			29			$	11,464			79			$	51,034
The following tables present information about troubled debt restructurings which occurred during the three and nine months ended September 30, 2014 and 2013:
	Three Months Ended September 30,
	2014											2013
	Number of			Pre-modification				Post-				Number of		Pre-modification				Post-
	Loans			Recorded				modification				Loans		Recorded				modification
				Investment				Recorded						Investment				Recorded
								Investment										Investment
	(Dollars in thousands)
Troubled Debt Restructings:
Residential mortgage	—			$	—			$	—			9		$	3,225			$	2,842
Commercial real estate	2			9,549				6,549				—		—				—
Commercial and industrial	—			—				—				1		521				521
	Nine Months Ended September 30,
	2014											2013
	Number of			Pre-modification				Post-				Number of			Pre-modification				Post-
	Loans			Recorded				modification				Loans			Recorded				modification
				Investment				Recorded							Investment				Recorded
								Investment											Investment
	(Dollars in thousands)
Troubled Debt Restructings:
Residential mortgage	8			$	2,546			$	2,546			20			$	8,723			$	8,155
Multi-family	—			—				—				3			18,037				10,420
Commercial real estate	3			10,657				7,657				4			5,080				4,679
Construction	—			—				—				1			2,640				2,640
Commercial and industrial	—			—				—				1			521				521
Post-modification recorded investment represents the net book balance immediately following modification.
All TDRs are impaired loans, which are individually evaluated for impairment, as discussed above. Collateral dependant impaired loans classified as TDRs were written down to the estimated fair value of the collateral. There was a $3.0 million in charge-off for a collateral dependant TDR during the three and nine months ended September 30, 2014. For three and nine months ended September 30, 2013, charge-offs for collateral dependant TDRs were $383,000 and $1.6 million, respectively. The allowance for loan losses associated with the TDRs presented in the above tables totaled $1.9 million and $2.1 million at September 30, 2014 and December 31, 2013, respectively.
Residential mortgage loan modifications primarily involved the reduction in loan interest rate and extension of loan maturity dates. All residential loans deemed to be TDRs were modified to reflect a reduction in interest rates to current market rates. Several residential TDRs include step up interest rates in their modified terms which will impact their weighted average yield in the future. Commercial loan modifications which qualified as a TDR comprised of terms of maturity being extended and reduction in interest rates to current market terms. As of September 30, 2014 and December 31, 2013, the Company has no additional fundings to any borrowers classified as a troubled debt restructuring.
The following tables present information about pre and post modification interest yield for troubled debt restructurings which occurred during the three and nine months ended September 30, 2014 and 2013:
	Three Months Ended September 30,
	2014									2013
	Number of			Pre-modification			Post-			Number of			Pre-modification			Post-
	Loans			Interest Yield			modification			Loans			Interest Yield			modification
							Interest Yield									Interest Yield
Troubled Debt Restructings:
Residential mortgage	—			—	%		—	%		9			4.44	%		3.14	%
Commercial real estate	2			6.42			5.49			—			—			—
Commercial and industrial	—			—			—			1			6			4
	Nine Months Ended September 30,
	2014									2013
	Number of			Pre-modification			Post-			Number of			Pre-modification			Post-
	Loans			Interest Yield			modification			Loans			Interest Yield			modification
							Interest Yield									Interest Yield
Troubled Debt Restructings:
Residential mortgage	8			5.18	%		3.57	%		20			5.03	%		3.33	%
Multi-family	—			—			—			3			8.61			3.81
Commercial real estate	3			6.59			5.75			4			7.29			5.41
Construction	—			—			—			1			5			3.75
Commercial and industrial	—			—			—			1			6			4
There were no loans modified as TDRs for which there was a payment default in the 12 months prior to September 30, 2014. Loans modified as TDRs in the 12 months prior to September 30, 2013, for which there was a payment default consisted of 4 residential loans with a recorded investment of $1.3 million at September 30, 2013.
Loan Sales
For the nine months ended September 30, 2014, the Company sold $32.4 million of non-performing and PCI loans. The sale resulted in a net gain of approximately $552,000.
For the nine months ended September 30, 2013, the Company sold $14.9 million of non-performing residential loans and one construction loan for $8.2 million. There was no gain or loss associated with any of the sales, as the loans were previously written down to estimated fair value.

Deposits

Deposits	9 Months Ended
	Sep. 30, 2014
Banking and Thrift [Abstract]	'
Deposits	'
	Deposits
	Deposits are summarized as follows:
		September 30,		December 31,
		2014		2013
		(In thousands)
	Savings	$	2,200,315	2,212,034
	Checking accounts	3,750,306		3,163,250
	Money market deposits	2,443,289		1,958,982
	Total transaction accounts	8,393,910		7,334,266
	Certificates of deposit	3,077,688		3,384,545
	Total Deposits	$	11,471,598	10,718,811

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Other Intangible Assets	'
	Goodwill and Other Intangible Assets
	The carrying amount of goodwill for the periods ended September 30, 2014 and December 31, 2013 was approximately $77.6 million.
	The following table summarizes other intangible assets as of September 30, 2014 and December 31, 2013:
		Gross Intangible Asset		Accumulated Amortization		Valuation Allowance		Net Intangible Assets
		(In thousands)
	September 30, 2014
	Mortgage servicing rights	$	23,494	(9,008	)	(81	)	14,405
	Core deposit premiums	25,058		(9,457	)	—		15,601
	Other	300		(103	)	—		197
	Total other intangible assets	$	48,852	(18,568	)	(81	)	30,203
	31-Dec-13
	Mortgage servicing rights	$	26,075	(11,292	)	(81	)	14,702
	Core deposit premiums	23,205		(6,569	)	—		16,636
	Other	300		(80	)	—		220
	Total other intangible assets	$	49,580	(17,941	)	(81	)	31,558
	Mortgage servicing rights are accounted for using the amortization method. Under this method, the Company amortizes the loan servicing asset in proportion to, and over the period of, estimated net servicing revenues. During 2008, the Company began selling loans on a servicing-retained basis. Loans that were sold on this basis, amounted to $1.61 billion and $1.71 billion at September 30, 2014 and December 31, 2013 respectively, all of which relate to residential mortgage loans. At September 30, 2014 and December 31, 2013, the servicing asset, included in intangible assets, had an estimated fair value of $14.4 million and $14.7 million, respectively. Fair value was based on expected future cash flows considering a weighted average discount rate of 10.18%, a weighted average constant prepayment rate on mortgages of 9.54% and a weighted average life of 7.2 years.
	Core deposit premiums are amortized using an accelerated method and having a weighted average amortization period of 10 years. As the result of the acquisition of Gateway Financial in January 2014, the Company recorded $1.9 million in core deposit premiums.

Equity_Incentive_Plan

Equity Incentive Plan	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Equity Incentive Plan	'
	Equity Incentive Plan
	The following table presents the share based compensation expense for the three and nine months ended September 30, 2014 and 2013:
		Three Months Ended September 30,					Nine Months Ended September 30,
		2014			2013		2014		2013
		(Dollars in thousands)
	Stock option expense	$	11		109		1,775		278
	Restricted stock expense	—			786		11,922		2,400
	Total share based compensation expense	$	11		895		13,697		2,678
	Upon completion of the mutual-to-stock conversion of Investors Bancorp, MHC, vesting accelerated on all outstanding stock option and restricted share awards.
	The following is a summary of the Company’s stock option activity and related information for its option plan for the nine months ended September 30, 2014:
			Number of		Weighted			Weighted	Aggregate
			Stock		Average			Average	Intrinsic
			Options		Exercise			Remaining	Value
					Price			Contractual
								Life
	Outstanding at December 31, 2013		11,299,351		$	5.99		3.7	$	45,652
	Granted		144,177		10.29
	Exercised		(2,047,889	)	6
	Forfeited		(3,060	)	8.69
	Expired		(44,648	)	5.74
	Outstanding at September 30, 2014		9,347,931		$	6.06		3	$	38,108
	Exercisable at September 30, 2014		9,319,213		$	6.04		3	$	38,108
	Upon completion of the mutual-to-stock conversion of Investors Bancorp, MHC, vesting accelerated on all outstanding stock option awards as of May 7, 2014. Expected future expenses relating to the non-vested options outstanding as of September 30, 2014 is $94,000 over a weighted average period of 6.14 years.
	The following is a summary of the status of the Company’s restricted shares as of September 30, 2014 and changes therein during the nine months ended:
			Number of		Weighted
			Shares		Average
			Awarded		Grant Date
					Fair Value
	Non-vested at December 31, 2013		2,655,585		$	5.37
	Granted		38,250		10.19
	Vested		(2,685,457	)	5.44
	Forfeited		(8,378	)	5.08
	Non-vested at September 30, 2014		—		$	—
	Upon completion of the mutual-to-stock conversion of Investors Bancorp, MHC, vesting accelerated on all outstanding restricted share awards and all applicable expenses were recognized during the period. No additional restricted awards have been granted.

Net_Periodic_Benefit_Plan_Expe

Net Periodic Benefit Plan Expense	9 Months Ended
	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Net Periodic Benefit Plan Expense	'
	Net Periodic Benefit Plan Expense
	The Company has a Supplemental Executive Retirement Wage Replacement Plan (SERP). The SERP is a nonqualified, defined benefit plan which provides benefits to employees as designated by the Compensation Committee of the Board of Directors if their benefits and/or contributions under the pension plan are limited by the Internal Revenue Code. The Company also has a nonqualified, defined benefit plan which provides benefits to certain directors. The SERP and the directors’ plan are unfunded and the costs of the plans are recognized over the period that services are provided.
	The components of net periodic benefit cost are as follows:
		Three Months Ended September 30,			Nine Months Ended September 30,
		2014		2013	2014		2013
		(In thousands)
	Service cost	$	580	450	$	1,740	1,349
	Interest cost	331		227	992		681
	Expected return on plan assets	—		—	—		—
	Amortization of:
	Prior service cost	24		24	73		73
	Net gain	158		165	474		495
	Total net periodic benefit cost	$	1,093	866	$	3,279	2,598
	Due to the unfunded nature of these plans, no contributions have been made or were expected to be made to the SERP and Directors’ plans during the nine months ended September 30, 2014.
	The Company also maintains a defined benefit pension plan. Since it is a multiemployer plan, costs of the pension plan are based on contributions required to be made to the pension plan. We contributed $2.8 million to the defined benefit pension plan during the nine months ended September 30, 2014. We anticipate contributing funds to the plan to meet any minimum funding requirements for the remainder of 2014.
	In connection with the acquisition of Roma Financial on December 6, 2013, the Company terminated the Roma defined benefit pension plan, with remaining liability being been fully accrued.  In connection with the acquisition of Gateway on January 10, 2014, the defined benefit pension plan was merged into Investors' existing defined benefit pension plan.

Comprehensive_Income_Loss

Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Comprehensive Income (Loss)	'
	Comprehensive Income (Loss)
	The components of comprehensive income (loss), both gross and net of tax, are as follows:
		Three Months Ended September 30,
		2014								2013
		Gross			Tax		Net			Gross			Tax		Net
		(In thousands)
	Net income	$	62,133		(23,092	)	39,041			45,334			(16,053	)	29,281
	Other comprehensive loss:
	Change in funded status of retirement obligations	182			(73	)	109			239			(98	)	141
	Unrealized (loss) gain on securities available-for-sale	(3,973		)	1,644		(2,329	)		185			(33	)	152
	Accretion of loss on securities reclassified to held-to- maturity from available-for-sale	745			(304	)	441			849			(347	)	502
	Other-than-temporary impairment accretion on debt securities	336			(137	)	199			1,084			(443	)	641
	Total other comprehensive (loss) income	(2,710		)	1,130		(1,580	)		2,357			(921	)	1,436
	Total comprehensive income	$	59,423		(21,962	)	37,461			47,691			(16,974	)	30,717
		Nine Months Ended September 30,
		2014								2013
		Gross			Tax		Net			Gross			Tax		Net
		(In thousands)
	Net income	$	141,848		(53,204	)	88,644			131,190			(46,666	)	84,524
	Other comprehensive loss:
	Change in funded status of retirement obligations	547			(220	)	327			717			(293	)	424
	Unrealized gain (loss) on securities available-for-sale	5,874			(2,319	)	3,555			(18,051	)		7,437		(10,614	)
	Net loss on securities reclassified from available-for- sale to held-to-maturity	—			—		—			(12,243	)		5,001		(7,242	)
	Accretion of loss on securities reclassified to held-to- maturity from available-for-sale	2,215			(905	)	1,310			849			(347	)	502
	Reclassification adjustment for gain included in net income	(233		)	95		(138	)		(684	)		279		(405	)
	Other-than-temporary impairment accretion on debt securities	1,007			(411	)	596			1,745			(713	)	1,032
	Total other comprehensive income (loss)	9,410			(3,760	)	5,650			(27,667	)		11,364		(16,303	)
	Total comprehensive income	$	151,258		(56,964	)	94,294			103,523			(35,302	)	68,221
	The following table presents the after-tax changes in the balances of each component of accumulated other comprehensive loss for the nine months ended September 30, 2014 and 2013:
		Change in			Net unrealized gains (losses) on investment securities		Total
		funded status of					accumulated
		retirement					other
		obligations					comprehensive
							loss
	Balance - December 31, 2013	$	(5,869	)	(19,827	)	(25,696	)
	Net change	327			5,323		5,650
	Balance - September 30, 2014	$	(5,542	)	(14,504	)	(20,046	)
	Balance - December 31, 2012	$	(5,879	)	(1,728	)	(7,607	)
	Net change	424			(16,727	)	(16,303	)
	Balance - September 30, 2013	$	(5,455	)	(18,455	)	(23,910	)
	The following table sets for information about amounts reclassified from accumulated other comprehensive loss to the consolidated statement of income and the affected line item in the statement where net income is presented.
		Three Months Ended September 30,					Nine Months Ended September 30,
		2014			2013		2014				2013
		(In thousands)
	Reclassification adjustment for gains included in net income
	Gain on security transactions	$	—		—		$	(233	)		(684	)
	Change in funded status of retirement obligations (1)
	Compensation and fringe benefits:
	Amortization of net obligation or asset	6			8		19				25
	Amortization of prior service cost	31			37		93				110
	Amortization of net gain	145			194		435				583
	Compensation and fringe benefits	182			239		547				718
	Total before tax	182			239		314				34
	Income tax benefit	(73		)	(98	)	(131		)		(14	)
	Net of tax	$	109		141		$	183			20
	(1) These accumulated other comprehensive loss components are included in the computations of net periodic cost for our defined benefit plans and other post-retirement benefit plan. See Note 9 for additional details.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	We use fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Our securities available-for-sale are recorded at fair value on a recurring basis. Additionally, from time to time, we may be required to record at fair value other assets or liabilities on a non-recurring basis, such as held-to-maturity securities, mortgage servicing rights (“MSR”), loans receivable and real estate owned (“REO”). These non-recurring fair value adjustments involve the application of lower-of-cost-or-market accounting or write-downs of individual assets. Additionally, in connection with our mortgage banking activities we have commitments to fund loans held for sale and commitments to sell loans, which are considered free-standing derivative instruments, the fair values of which are not material to our financial condition or results of operations.
	In accordance with FASB ASC 820, “Fair Value Measurements and Disclosures”, we group our assets and liabilities at fair value in three levels, based on the markets in which the assets are traded and the reliability of the assumptions used to determine fair value. These levels are:
	•	Level 1 – Valuation is based upon quoted prices for identical instruments traded in active markets.
	•	Level 2 – Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-based valuation techniques for which all significant assumptions are observable in the market.
	•	Level 3 – Valuation is generated from model-based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect our own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include the use of option pricing models, discounted cash flow models and similar techniques. The results cannot be determined with precision and may not be realized in an actual sale or immediate settlement of the asset or liability.
	We base our fair values on the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 requires us to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.
	Assets Measured at Fair Value on a Recurring Basis
	Securities available-for-sale
	Our available-for-sale portfolio is carried at estimated fair value on a recurring basis, with any unrealized gains and losses, net of taxes, reported as accumulated other comprehensive income/loss in stockholders’ equity. The fair values of available-for-sale securities are based on quoted market prices (Level 1), where available. The Company obtains one price for each security primarily from a third-party pricing service ("pricing service"), which generally uses quoted or other observable inputs for the determination of fair value. The pricing service normally derives the security prices through recently reported trades for identical or similar securities, making adjustments through the reporting date based upon available observable market information. For securities not actively traded (Level 2), the pricing service may use quoted market prices of comparable instruments or discounted cash flow analyses, incorporating inputs that are currently observable in the markets for similar securities. Inputs that are often used in the valuation methodologies include, but are not limited to, benchmark yields, credit spreads, default rates, prepayment speeds and non-binding broker quotes. As the Company is responsible for the determination of fair value, it performs quarterly analyses on the prices received from the pricing service to determine whether the prices are reasonable estimates of fair value. Specifically, the Company compares the prices received from the pricing service to a secondary pricing source. Additionally, the Company compares changes in the reported market values and returns to relevant market indices to test the reasonableness of the reported prices. The Company’s internal price verification procedures and review of fair value methodology documentation provided by independent pricing services has not historically resulted in adjustment in the prices obtained from the pricing service.
	The following table provides the level of valuation assumptions used to determine the carrying value of our assets measured at fair value on a recurring basis at September 30, 2014 and December 31, 2013, respectively.
		Carrying Value at September 30, 2014
		Total				Level 1		Level 2		Level 3
		(In thousands)
	Securities available for sale:
	Equity securities	$	8,391			—		8,391		—
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	448,327				—		448,327		—
	Federal National Mortgage Association	589,103				—		589,103		—
	Government National Mortgage Association	141				—		141		—
	Total mortgage-backed securities available-for-sale	1,037,571				—		1,037,571		—
	Total securities available-for-sale	$	1,045,962			—		1,045,962		—
		Carrying Value at December 31, 2013
		Total				Level 1		Level 2		Level 3
		(In thousands)
	Securities available for sale:
	Equity securities	$	8,444			—		8,444		—
	Debt securities:
	Government-sponsored enterprises	3,004				—		3,004		—
	Corporate and other debt securities	670				—		—		670
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	363,088				—		363,088		—
	Federal National Mortgage Association	409,559				—		409,559		—
	Government National Mortgage Association	267				—		267		—
	Total mortgage-backed securities available-for-sale	772,914				—		772,914		—
	Total securities available-for-sale	$	785,032			—		784,362		670
	There have been no changes in the methodologies used at September 30, 2014 from December 31, 2013, and there were no transfers between Level 1 and Level 2 during the nine months ended September 30, 2014.
	There were no changes in Level 3 assets measured at fair value on a recurring basis for the three months ended September 30, 2014 and 2013. The changes in Level 3 assets measured at fair value on a recurring basis for the nine months ended September 30, 2014 and 2013 are summarized below:
		Nine Months Ended September 30,
		2014				2013
		(Dollars in thousands)
	Balance beginning of period (1)	$	670			—
	Transfers from held-to-maturity	—				—
	Total net (losses) gains for the period included in:
	Net income	470				—
	Other comprehensive income (loss)	(229		)		—
	Sales	(911		)		—
	Settlements	—				—
	Balance end of period	$	—			—
	(1) Represents a trust preferred security transferred to available-for-sale from held-to-maturity at its fair value on December 31, 2013 due to the impact of the Volcker Rule adopted in December 2013. The Volcker Rule requires specific treatment of certain collateralized debt obligation backed by trust preferred securities.
	Assets Measured at Fair Value on a Non-Recurring Basis
	Mortgage Servicing Rights, net
	Mortgage servicing rights (MSR) are carried at the lower of cost or estimated fair value. The estimated fair value of MSR is obtained through independent third party valuations through an analysis of future cash flows, incorporating estimates of assumptions market participants would use in determining fair value including market discount rates, prepayment speeds, servicing income, servicing costs, default rates and other market driven data, including the market’s perception of future interest rate movements. The prepayment speed and the discount rate are considered two of the most significant inputs in the model. At September 30, 2014, the fair value model used prepayment speeds ranging from 6.00% to 29.40% and a discount rate of 10.18% for the valuation of the mortgage servicing rights. A significant degree of judgment is involved in valuing the mortgage servicing rights using Level 3 inputs. The use of different assumptions could have a significant positive or negative effect on the fair value estimate.
	Loans Receivable
	Loans which meet certain criteria are evaluated individually for impairment. A loan is deemed to be impaired if it is a commercial loan with an outstanding balance greater than $1.0 million and on non-accrual status, loans modified in a troubled debt restructuring, and other commercial loans with $1.0 million in outstanding principal if management has specific information that it is probable they will not collect all amounts due under the contractual terms of the loan agreement. Our impaired loans are generally collateral dependent and, as such, are carried at the estimated fair value of the collateral less estimated selling costs. In order to estimate fair value, once interest or principal payments are 90 days delinquent or when the timely collection of such income is considered doubtful an updated appraisal is obtained. Thereafter, in the event the most recent appraisal does not reflect the current market conditions due to the passage of time and other factors, management will obtain an updated appraisal or make downward adjustments to the existing appraised value based on their knowledge of the property, local real estate market conditions, recent real estate transactions, and for estimated selling costs, if applicable. At September 30, 2014 appraisals were discounted in a range of 0%-25%.
	Other Real Estate Owned
	Other Real Estate Owned is recorded at estimated fair value, less estimated selling costs when acquired, thus establishing a new cost basis. Fair value is generally based on independent appraisals. These appraisals include adjustments to comparable assets based on the appraisers’ market knowledge and experience, and are discounted an additional 0%-25% for estimated costs to sell. When an asset is acquired, the excess of the loan balance over fair value, less estimated selling costs, is charged to the allowance for loan losses. If the estimated fair value of the asset declines, a writedown is recorded through expense. The valuation of foreclosed assets is subjective in nature and may be adjusted in the future because of changes in economic conditions. Operating costs after acquisition are generally expensed.
	The following table provides the level of valuation assumptions used to determine the carrying value of our assets measured at fair value on a non-recurring basis at September 30, 2014 and December 31, 2013. For the three months ended September 30, 2014 and December 31, 2013, there was no change to the carrying value of MSR and impaired loans measured at fair value on a non-recurring basis.
	Security Type	Valuation Technique	Unobservable Input	Range	Weighted Average	Carrying Value at September 30, 2014
						Total		Level 1	Level 2		Level 3
						(In thousands)
	Other real estate owned	Market comparable	Lack of marketability	0.0% - 25.0%	15.55%	$	684	—	—		684
						$	684	—	—		684
Security Type	Valuation Technique	Unobservable Input	Range	Weighted Average	Carrying Value at December 31, 2013
					Total		Level 1	Level 2		Level 3
					(In thousands)
Other real estate owned	Market comparable	Lack of marketability	0.0% - 25.0%	2.42%	$	929	—	—		929
					$	929	—	—		929
Other Fair Value Disclosures
Fair value estimates, methods and assumptions for the Company’s financial instruments not recorded at fair value on a recurring or non-recurring basis are set forth below.
Cash and Cash Equivalents
For cash and due from banks, the carrying amount approximates fair value.
Securities held-to-maturity
Our held-to-maturity portfolio, consisting primarily of mortgage backed securities and other debt securities for which we have a positive intent and ability to hold to maturity, is carried at amortized cost. Management utilizes various inputs to determine the fair value of the portfolio. The Company obtains one price for each security primarily from a third-party pricing service, which generally uses quoted or other observable inputs for the determination of fair value. The pricing service normally derives the security prices through recently reported trades for identical or similar securities, making adjustments through the reporting date based upon available observable market information. For securities not actively traded, the pricing service may use quoted market prices of comparable instruments or discounted cash flow analyses, incorporating inputs that are currently observable in the markets for similar securities. Inputs that are often used in the valuation methodologies include, but are not limited to, benchmark yields, credit spreads, default rates, prepayment speeds and non-binding broker quotes. In the absence of quoted prices and in an illiquid market, valuation techniques, which require inputs that are both significant to the fair value measurement and unobservable, are used to determine fair value of the investment. Valuation techniques are based on various assumptions, including, but not limited to cash flows, discount rates, rate of return, adjustments for nonperformance and liquidity, and liquidation values. As the Company is responsible for the determination of fair value, it performs quarterly analyses on the prices received from the pricing service to determine whether the prices are reasonable estimates of fair value. Specifically, the Company compares the prices received from the pricing service to a secondary pricing source. Additionally, the Company compares changes in the reported market values and returns to relevant market indices to test the reasonableness of the reported prices. The Company’s internal price verification procedures and review of fair value methodology documentation provided by independent pricing services has not historically resulted in adjustment in the prices obtained from the pricing service.
FHLB Stock
The fair value of FHLB stock is its carrying value, since this is the amount for which it could be redeemed. There is no active market for this stock and the Bank is required to hold a minimum investment based upon the unpaid principal of home mortgage loans and/or FHLB advances outstanding.
Loans
Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as residential mortgage and consumer. Each loan category is further segmented into fixed and adjustable rate interest terms and by performing and nonperforming categories.
The fair value of performing loans, except residential mortgage loans, is 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. For performing residential mortgage loans, fair value is estimated by discounting contractual cash flows adjusted for prepayment estimates using discount rates based on secondary market sources adjusted to reflect differences in servicing and credit costs, if applicable. Fair value for significant nonperforming loans is based on recent external appraisals of collateral securing such loans, adjusted for the timing of anticipated cash flows. Fair values estimated in this manner do not fully incorporate an exit price approach to fair value, but instead are based on a comparison to current market rates for comparable loans.
Deposit Liabilities
The fair value of deposits with no stated maturity, such as savings, checking accounts and money market accounts, is equal to the amount payable on demand. The fair value of certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates which approximate currently offered for deposits of similar remaining maturities.
Borrowings
The fair value of borrowings are based on securities dealers’ estimated fair values, when available, or estimated using discounted contractual cash flows using rates which approximate the rates offered for borrowings of similar remaining maturities.
Commitments to Extend Credit
The fair value of commitments to extend credit is 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. For commitments to originate fixed rate loans, fair value also considers the difference between current levels of interest rates and the committed rates. Due to the short-term nature of our outstanding commitments, the fair values of these commitments are immaterial to our financial condition.
The carrying values and estimated fair values of the Company’s financial instruments are presented in the following tables.
	September 30, 2014
	Carrying				Estimated Fair Value
	value				Total		Level 1		Level 2		Level 3
	(In thousands)
Financial assets:
Cash and cash equivalents	$	238,166			238,166		238,166		—		—
Securities available-for-sale	1,045,962				1,045,962		—		1,045,962		—
Securities held-to-maturity	1,514,374				1,547,389		—		1,482,702		64,687
Stock in FHLB	140,990				140,990		140,990		—		—
Loans held for sale	6,986				6,986		—		6,986		—
Net loans	14,169,323				14,015,727		—		—		14,015,727
Financial liabilities:
Deposits, other than time deposits	8,393,910				8,393,910		8,393,910		—		—
Time deposits	3,077,688				3,089,598		—		3,089,598		—
Borrowed funds	2,536,594				2,563,294		—		2,563,294		—
	December 31, 2013
	Carrying				Estimated Fair Value
	value				Total		Level 1		Level 2		Level 3
	(In thousands)
Financial assets:
Cash and cash equivalents	$	250,689			250,689		250,689		—		—
Securities available-for-sale	785,032				785,032		—		784,362		670
Securities held-to-maturity	831,819				839,064		—		790,460		48,604
Stock in FHLB	178,126				178,126		178,126		—		—
Loans held for sale	8,273				8,273		—		8,273		—
Net loans	12,882,544				12,598,551		—		—		12,598,551
Financial liabilities:
Deposits, other than time deposits	7,334,266				7,334,266		7,334,266		—		—
Time deposits	3,384,545				3,410,202		—		3,410,202		—
Borrowed funds	3,367,274				3,337,419		—		3,337,419		—
Limitations
Fair value estimates are made at a specific point 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 Company’s entire holdings of a particular financial instrument. The fair value estimate of a significant portion of the Company’s financial instruments are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates.
Fair value estimates are based on existing on- and off-balance-sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Significant assets that are not considered financial assets include deferred tax assets, premises and equipment and bank owned life insurance. Liabilities for pension and other postretirement benefits are not considered financial liabilities. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in the estimates.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2014
Accounting Changes and Error Corrections [Abstract]	'
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In July 2013, the FASB issued ASU 2013-11, "Income Taxes, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists." The amendments of this update state that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. This ASU applies to all entities that have unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists at the reporting date. The amendments in this ASU are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption is permitted. The amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date. Retrospective application is permitted. The adoption of this pronouncement did not have a material impact on the Company’s financial condition or results of operations.
	In January 2014, the FASB, issued ASU, 2014-01, “Investments - Equity Method and Joint Ventures (Subtopic 323) Accounting for Investments in Qualified Affordable Housing Projects,” which applies to all reporting entities that invest in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for the low-income housing tax credit. Currently under GAAP, a reporting entity that invests in a qualified affordable housing project may elect to account for that investment using the effective yield method if all of the conditions are met. For those investments that are not accounted for using the effective yield method, GAAP requires that they be accounted for under either the equity method or the cost method. Certain of the conditions required to be met to use the effective yield method were restrictive and thus prevented many such investments from qualifying for the use of the effective yield method. The amendments in this update modify the conditions that a reporting entity must meet to be eligible to use a method other than the equity or cost methods to account for qualified affordable housing project investments. If the modified conditions are met, the amendments permit an entity to use the proportional amortization method to amortize the initial cost of the investment in proportion to the amount of tax credits and other tax benefits received and recognize the net investment performance in the income statement as a component of income tax expense (benefit). Additionally, the amendments introduce new recurring disclosures about all investments in qualified affordable housing projects irrespective of the method used to account for the investments. The amendments in ASU 2014-01 are effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2014. Early adoption is permitted. The Company does not expect that the adoption of this pronouncement will have a material impact on the Company’s financial condition or results of operations.
	In January 2014, the FASB issued ASU 2014-04, “Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40) Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure,” which applies to all creditors who obtain physical possession of residential real estate property collateralizing a consumer mortgage loan in satisfaction of a receivable.  The amendments in this update clarify when an in substance repossession or foreclosure occurs and requires disclosure of both (1) the amount of foreclosed residential real estate property held by a creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The amendments in ASU 2014-04 are effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2014. Early adoption is permitted and entities can elect to adopt a modified retrospective transition method or a prospective transition method. The Company does not expect that the adoption of this pronouncement will have a material impact on the Company’s financial condition or results of operations.
	In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers." The objective of this amendment is to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and IFRS. This update affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are in the scope of other standards. For public entities, the amendments in this update are effective for annual reporting periods beginning after December 15, 2016. The Company does not anticipate a material impact to the consolidated financial statements related to this guidance.
	In June 2014, the FASB issued ASU 2014-11, "Transfers and Servicing: Repurchase-to-Maturity Transaction, Repurchase Financings, and Disclosures." The amendments affect all entities that enter into repurchase-to-maturity transactions or repurchase financings. The amendments change the current accounting outcome by requiring repurchase-to-maturity transactions to be accounted for as secured borrowings. Additionally, the amendments require that in a repurchase financing arrangement the repurchase agreement be accounted for separately from the initial transfer of the financial asset. ASU 2014-11 requires a new disclosure for certain transactions that involve (1) a transfer of a financial asset accounted for as a sale and (2) an agreement with the same transferee entered into in contemplation of the initial transfer that results in the transferor retaining substantially all of the exposure to the economic return on the transferred financial asset throughout the term of the transaction. The accounting changes in this update are effective for public business entities for the first interim or annual period beginning after December 15, 2014. Earlier application for a public business entity is prohibited. The Company does not anticipate a material impact to the consolidated financial statements related to this guidance.
	In August 2014, the FASB issued ASU 2014-14, "Receivables - Troubled Debt Restructurings by Creditors: Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure." The amendments in this update affect creditors that hold government guaranteed mortgage loans, including those guaranteed by the Federal Housing Administration and the U.S. Department of Veterans Affairs. The amendments in this update require that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met (i) the loan has a government guarantee that is not separable from the loan before foreclosure, (ii) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim, and (iii) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. The amendments in this update are effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The Company does not anticipate a significant impact to the consolidated financial statements related to this guidance. The Company will comply with the provisions of this guidance upon its effective date and, if applicable, record a separate other receivable for foreclosed government guaranteed mortgage loans.

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	As defined in FASB ASC 855, "Subsequent Events", subsequent events are events or transactions that occur after the balance sheet date but before financial statements are issued or available to be issued. Financial statements are considered issued when they are widely distributed to shareholders and other financial statement users for general use and reliance in a form and format that complies with GAAP.
	On October 30, 2014, the Company declared a cash dividend of $0.04 per share to stockholders of record as of November 10, 2014, payable on November 25, 2014.

Business_Combinations_Tables

Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2014
Gateway Community Financial Corporation	'
Business Acquisition [Line Items]	'
Summary of Estimated Fair Values of the Assets Acquired and Liabilities Assumed	'
	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date of acquisition for Gateway Financial, net of cash consideration paid:
		At January 10, 2014
		(In millions)
	Cash and cash equivalents, net	$	17.9
	Securities available-for-sale	50.3
	Loans receivable	195.1
	Accrued interest receivable	0.7
	Other real estate owned	0.4
	Office properties and equipment, net	4.3
	Intangible assets	1.9
	Other assets	15.9
	Total assets acquired	286.5
	Deposits	(254.7		)
	Borrowed funds	(5.2		)
	Other liabilities	(3.1		)
	Total liabilities assumed	$	(263.0	)
	Net assets acquired	$	23.5
Roma Financial Corporation	'
Business Acquisition [Line Items]	'
Summary of Estimated Fair Values of the Assets Acquired and Liabilities Assumed	'
	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date of acquisition for Roma, net of cash consideration paid:
		At December 6,
		2013
		(In millions)
	Cash and cash equivalents, net	$	118.2
	Securities available-for-sale	382
	Securities held to maturity	13.6
	Loans receivable	991
	Accrued interest receivable	3.8
	Other real estate owned	5.3
	Office properties and equipment, net	30.7
	Goodwill	0.3
	Intangible assets	9.5
	Other assets	78.5
	Total assets acquired	1,632.90
	Deposits	(1,341.2		)
	Borrowed funds	(92.1		)
	Other liabilities	(20.5		)
	Total liabilities assumed	$	(1,453.8	)
	Net assets acquired	$	179.1

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Summary Of Calculations And Reconciliation Of Basic To Diluted Earnings Per Share	'
	The following is a summary of our earnings per share calculations and reconciliation of basic to diluted earnings per share.
		Three Months Ended September 30,
		2014					2013
		Income		Shares	Per  Share		Income		Shares	Per  Share
					Amount					Amount
		(Dollars in thousands, except per share data)
	Net Income	$	39,041				$	29,281
	Basic earnings per share:
	Income available to common stockholders	$	39,041	343,493,691	$	0.11	$	29,281	275,229,343	$	0.11
	Effect of dilutive common stock equivalents (1)	—		3,279,852			—		3,632,571
	Diluted earnings per share:
	Income available to common stockholders	$	39,041	346,773,543	$	0.11	$	29,281	278,861,914	$	0.11
	(1) For the three months ended September 30, 2014 and 2013, there were 28,713 and 495,771 equity awards, respectively, that could potentially dilute basic earnings per share in the future that were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the periods presented.
		Nine Months Ended September 30,
		2014					2013
		Income		Shares	Per  Share		Income		Shares	Per  Share
					Amount					Amount
		(Dollars in thousands, except per share data)
	Net Income	$	88,644				$	84,524
	Basic earnings per share:
	Income available to common stockholders	$	88,644	344,494,901	$	0.26	$	84,524	274,801,234	$	0.31
	Effect of dilutive common stock equivalents (1)	—		3,617,839			—		3,205,648
	Diluted earnings per share:
	Income available to common stockholders	$	88,644	348,112,740	$	0.25	$	84,524	278,006,882	$	0.3
	(1) For the nine months ended September 30, 2014 and 2013, there were 143,463 and 495,771 equity awards, respectively, that could potentially dilute basic earnings per share in the future that were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the periods presented.

Securities_Tables

Securities (Tables)	9 Months Ended
	Sep. 30, 2014
Investments, Debt and Equity Securities [Abstract]	'
Summary of securities	'
	The following tables present the carrying value, gross unrealized gains and losses and estimated fair value for available-for-sale securities and the amortized cost, net unrealized losses, gross unrecognized gains and losses and estimated fair value for held-to-maturity securities as of the dates indicated:
		At September 30, 2014
		Carrying value				Gross			Gross			Estimated
						unrealized			unrealized losses			fair value
						gains
		(In thousands)
	Available-for-sale:
	Equity securities	$	6,887			1,504			—			8,391
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	445,209				5,088			(1,970	)		448,327
	Federal National Mortgage Association	585,577				5,706			(2,180	)		589,103
	Government National Mortgage Association	140				1			—			141
	Total mortgage-backed securities available-for-sale	1,030,926				10,795			(4,150	)		1,037,571
	Total available-for-sale securities	$	1,037,813			12,299			(4,150	)		1,045,962
		At September 30, 2014
		Amortized cost				Net unrealized losses (1)			Carrying value			Gross			Gross		Estimated
												unrecognized			unrecognized		fair value
												gains (2)			losses (2)
		(In thousands)
	Held-to-maturity:
	Debt securities:
	Government-sponsored enterprises	$	4,427			—			4,427			1			(4	)	4,424
	Municipal bonds	15,359				—			15,359			943			—		16,302
	Corporate and other debt securities	58,087				(25,384	)		32,703			32,385			(401	)	64,687
	Total debt securities held-to-maturity	77,873				(25,384	)		52,489			33,329			(405	)	85,413
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	480,817				(4,139	)		476,678			2,448			(3,574	)	475,552
	Federal National Mortgage Association	960,560				(4,219	)		956,341			5,379			(3,930	)	957,790
	Government National Mortgage Association	28,635				—			28,635			—			(232	)	28,403
	Federal housing authorities	231				—			231			—			—		231
	Total mortgage-backed securities held-to-maturity	1,470,243				(8,358	)		1,461,885			7,827			(7,736	)	1,461,976
	Total held-to-maturity securities	$	1,548,116			(33,742	)		1,514,374			41,156			(8,141	)	1,547,389
	(1) Net unrealized losses of held-to-maturity corporate and other debt securities represent the other than temporary charge related to other non credit factors and is being amortized through accumulated other comprehensive income over the remaining life of the securities. For mortgage-backed securities, it represents the net loss on previously designated available-for sale securities transferred to held-to-maturity at fair value and is being amortized through accumulated other comprehensive income over the remaining life of the securities.
	(2) Unrecognized gains and losses of held-to-maturity securities are not reflected in the financial statements, as they represent fair value fluctuations from the later of: (i) the date a security is designated as held-to-maturity; or (ii) the date that an OTTI charge is recognized on a held-to-maturity security, through the date of the balance sheet.
		At December 31, 2013
		Carrying value				Gross			Gross			Estimated
						unrealized			unrealized			fair value
						gains			losses
		(In thousands)
	Available-for-sale:
	Equity securities	$	7,148			1,315			(19	)		8,444
	Debt securities:
	Government-sponsored enterprises	3,004				—			—			3,004
	Corporate and other debt securities	670				—			—			670
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	362,876				4,055			(3,843	)		363,088
	Federal National Mortgage Association	408,794				4,620			(3,855	)		409,559
	Government National Mortgage Association	267				—			—			267
	Total mortgage-backed securities available-for-sale	771,937				8,675			(7,698	)		772,914
	Total available-for-sale securities	$	782,759			9,990			(7,717	)		785,032
		At December 31, 2013
		Amortized cost				Net unrealized losses (1)			Carrying Value			Gross			Gross		Estimated
												unrecognized			unrecognized		fair value
												gains (2)			losses (2)
		(In thousands)
	Held-to-maturity:
	Debt securities:
	Government-sponsored enterprises	$	4,542			—			4,542			—			(18	)	4,524
	Municipal bonds	14,992				—			14,992			487			—		15,479
	Corporate and other debt securities	56,072				(26,391	)		29,681			20,315			(1,392	)	48,604
	Total debt securities held-to-maturity	75,606				(26,391	)		49,215			20,802			(1,410	)	68,607
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	308,890				(5,273	)		303,617			1,901			(7,646	)	297,872
Federal National Mortgage Association	483,916				(5,300	)		478,616			3,001			(9,403	)	472,214
Federal housing authorities	371				—			371			—			—		371
Total mortgage-backed securities held-to-maturity	793,177				(10,573	)		782,604			4,902			(17,049	)	770,457
Total held-to-maturity securities	$	868,783			(36,964	)		831,819			25,704			(18,459	)	839,064
(1) Net unrealized losses of held-to-maturity corporate and other debt securities represent the other than temporary charge related to other non credit factors and is being amortized through accumulated other comprehensive income over the remaining life of the securities. For mortgage-backed securities, it represents the net loss on previously designated available-for sale securities transferred to held-to-maturity at fair value and is being amortized through accumulated other comprehensive income over the remaining life of the securities.
(2) Unrecognized gains and losses of held-to-maturity securities are not reflected in the financial statements, as they represent fair value fluctuations from the later of: (i) the date a security is designated as held-to-maturity; or (ii) the date that an OTTI charge is recognized on a held-to-maturity security, through the date of the balance sheet.
Investment Securities, Continuous Unrealized Loss Position and Fair Value	'
	Gross unrealized losses on securities and the estimated fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2014 and December 31, 2013, was as follows:
		September 30, 2014
		Less than 12 months							12 months or more						Total
		Estimated				Unrealized			Estimated			Unrealized			Estimated		Unrealized
		fair value				losses			fair value			losses			fair value		losses
		(In thousands)
	Available-for-sale:
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	$	139,038			710			85,556			1,260			224,594		1,970
	Federal National Mortgage Association	93,214				600			73,727			1,580			166,941		2,180
	Total mortgage-backed securities available-for-sale	232,252				1,310			159,283			2,840			391,535		4,150
	Total available-for-sale	$	232,252			1,310			159,283			2,840			391,535		4,150
	Held-to-maturity:
	Debt securities:
	Government-sponsored enterprises	4,324				4			—			—			4,324		4
	Corporate and other debt securities	—				—			144			401			144		401
	Total debt securities held-to-maturity	4,324				4			144			401			4,468		405
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	209,681				1,570			107,499			2,004			317,180		3,574
	Federal National Mortgage Association	447,197				1,560			102,540			2,370			549,737		3,930
	Government National Mortgage Association	28,403				232			—			—			28,403		232
	Total mortgage-backed securities held-to-maturity	685,281				3,362			210,039			4,374			895,320		7,736
	Total held-to-maturity	$	689,605			3,366			210,183			4,775			899,788		8,141
	Total	$	921,857			4,676			369,466			7,615			1,291,323		12,291
		December 31, 2013
		Less than 12 months							12 months or more						Total
		Estimated				Unrealized			Estimated			Unrealized			Estimated		Unrealized
		fair value				losses			fair value			losses			fair value		losses
		(In thousands)
	Available-for-sale:
	Equity securities	$	506			19			—			—			506		19
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	164,306				3,843			—			—			164,306		3,843
	Federal National Mortgage Association	210,493				3,855			—			—			210,493		3,855
	Total mortgage-backed securities available-for-sale	374,799				7,698			—			—			374,799		7,698
	Total available-for-sale	$	375,305			7,717			—			—			375,305		7,717
	Held-to-maturity:
	Debt securities:
	Government-sponsored enterprises	$	4,524			18			—			—			4,524		18
	Corporate and other debt securities	2,391				645			376			747			2,767		1,392
	Total debt securities held-to-maturity	6,915				663			376			747			7,291		1,410
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	245,491				6,989			20,871			657			266,362		7,646
	Federal National Mortgage Association	390,750				9,147			4,454			256			395,204		9,403
	Total mortgage-backed securities held-to-maturity	636,241				16,136			25,325			913			661,566		17,049
	Total held-to-maturity	$	643,156			16,799			25,701			1,660			668,857		18,459
	Total	$	1,018,461			24,516			25,701			1,660			1,044,162		26,176
Summary of Pooled Trust Preferred Securities	'
	The following table summarizes the Company’s pooled trust preferred securities as of September 30, 2014 excluding one trust preferred security which the Company previously recorded a net other-than-temporary impairment charge which resulted in a zero net book balance for the security. At September 30, 2014, the security had a fair value of $38,000. The Company does not own any single-issuer trust preferred securities.
	(Dollars in 000’s)
	Description	Class		Book Value				Fair Value				Unrecognized				Number of		Current		Expected		Excess		Moody’s/
												Gains (Losses)				Issuers		Deferrals and		Deferrals and		Subordination		Fitch Credit
																Currently		Defaults as a		Defaults as %		as a % of		Ratings
																Performing		% of Total		of Remaining		Performing
																		Collateral (1)		Collateral (2)		Collateral (3)
	Alesco PF II	B1		$	327			$	481.7			$	154.6			30		11.8	%	8.8	%	—	%	Caa3 / C
	Alesco PF III	B1		813.1				1,782.00				968.9				31		11.1	%	9	%	—	%	Ca / C
	Alesco PF III	B2		325.3				712.8				387.5				31		11.1	%	9	%	—	%	Ca / C
	Alesco PF IV	B1		401.2				697.8				296.6				38		1.2	%	11	%	—	%	C / C
	Alesco PF VI	C2		718.4				1,659.70				941.3				44		7.6	%	12.1	%	—	%	Ca / C
	MM Comm III	B		156.6				3,221.00				3,064.50				5		30	%	9.3	%	12.8	%	Ba1 / BB
	MMCaps XVII	C1		1,647.40				2,236.50				589.1				33		13	%	7.4	%	—	%	Caa1 / C
	MMCaps XIX	C		545.1				144				(401.1		)		34		25.4	%	11.9	%	—	%	C / C
	Tpref I	B		1,552.40				1,931.40				379				7		51.9	%	8.7	%	—	%	Ca / WD
	Tpref II	B		4,156.50				5,324.40				1,168.00				18		34.8	%	9.9	%	—	%	Caa3 / C
	US Cap I	B2		917.2				1,980.00				1,062.80				30		12.5	%	7.1	%	—	%	B3 / C
	US Cap I	B1		2,733.50				5,940.00				3,206.50				30		12.5	%	7.1	%	—	%	B3 / C
	US Cap II	B1		1,429.90				2,899.00				1,469.10				35		15.6	%	8.3	%	—	%	B3 / C
	US Cap III	B1		1,855.10				2,789.00				933.9				30		16	%	9.8	%	—	%	Caa2 / C
	Trapeza XII	C1		1,782.70				3,117.70				1,334.90				33		24.3	%	11.4	%	—	%	C / C
	Trapeza XIII	C1		1,930.00				3,921.00				1,991.00				48		18.4	%	10.2	%	—	%	Ca / CC
	Pretsl XXII	A1		556.2				1,517.10				960.9				71		19.5	%	12.4	%	31.4	%	A1 / A
	Pretsl XXIV	A1		1,898.10				4,508.00				2,609.90				60		26.1	%	16.2	%	24.9	%	A3 / BBB
	Pretsl IV	Mez		147.4				221.2				73.8				6		18.1	%	7.5	%	19	%	B1 / BB
	Pretsl V	Mez		17.1				17.1				—				—		65.5	%	—	%	—	%	C / WD
	Pretsl VII	Mez		400.9				1,876.50				1,475.60				11		47.8	%	13	%	—	%	Ca / WD
	Pretsl XV	B1		934.6				2,180.20				1,245.70				57		11.6	%	13.2	%	—	%	Caa3 / C
	Pretsl XVII	C		743.5				1,594.60				851.2				37		19	%	16.2	%	—	%	C / CC
	Pretsl XVIII	C		1,643.60				2,845.30				1,201.70				55		22	%	9.9	%	—	%	Ca / C
	Pretsl XIX	C		722.9				1,254.20				531.2				52		10.6	%	13.2	%	—	%	C / C
	Pretsl XX	C		407.6				729.9				322.3				45		16.8	%	15.5	%	—	%	Ca / C
	Pretsl XXI	C1		952.8				2,985.30				2,032.60				53		19	%	12.1	%	—	%	Ca / C
	Pretsl XXIII	A-FP		702				2,134.60				1,432.60				93		19.9	%	13.1	%	18.3	%	Aa2 / BBB
	Pretsl XXIV	C1		690.7				764.8				74				60		26.1	%	16.2	%	—	%	C / C
	Pretsl XXV	C1		439.2				928.2				489				52		25.7	%	12.9	%	—	%	C / C
	Pretsl XXVI	C1		525.2				1,150.30				625.1				54		24.1	%	12.8	%	—	%	C / C
	Pref Pretsl IX	B2		405.3				726.6				321.3				29		24	%	8.9	%	—	%	B3 / C
	Pretsl X	C2		224.8				377				152.2				32		26.2	%	10.6	%	—	%	Caa1 / C
				$	32,703.30			$	64,648.90			$	31,945.70
	-1	At September 30, 2014, current deferrals and defaults as a percent of collateral ranged from 1.2% to 65.5%.
	-2	At September 30, 2014, expected deferrals and defaults as a percent of remaining collateral ranged from 0.0% to 23.4%.
	-3	Excess subordination represents the amount of remaining performing collateral that is in excess of the amount needed to pay off a specified class of bonds and all classes senior to the specified class. Excess subordination reduces an investor’s potential risk of loss on their investment as excess subordination absorbs principal and interest shortfalls in the event underlying issuers are not able to make their contractual payments.
Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity	'
	A portion of the Company’s securities are pledged to secure borrowings. The contractual maturities of mortgage-backed securities are generally less than 20 years; with effective lives expected to be shorter due to anticipated prepayments. Expected maturities may differ from contractual maturities due to prepayment or early call privileges of the issuer, therefore, mortgage-backed securities are not included in the following table. The amortized cost and estimated fair value of debt securities at September 30, 2014, by contractual maturity, are shown below.
		September 30, 2014
		Carrying Value				Estimated
						fair value
		(In thousands)
	Due in one year or less	$	10,074			10,075
	Due after one year through five years	4,707				4,704
	Due after five years through ten years	—				—
	Due after ten years	37,708				70,634
	Total	$	52,489			85,413
Changes in Credit Loss Component of the Impairment Loss of Debt Securities for Other-than-Temporary Impairment Recognized in Earnings	'
	The following table presents the changes in the credit loss component of the impairment loss of debt securities that the Company has written down for such loss as an other-than-temporary impairment recognized in earnings.
		Three Months Ended September 30,							Nine Months Ended September 30,
		2014				2013			2014				2013
		(In thousands)
	Balance of credit related OTTI, beginning of period	$	110,522			112,886			$	112,235			114,514
	Additions:
	Initial credit impairments	—				—			—				—
	Subsequent credit impairments	—				—			—				—
	Reductions:
	Accretion of credit loss impairment due to an increase in expected cash flows	(853		)		(814	)		(2,566		)		(2,442	)
	Balance of credit related OTTI, end of period	$	109,669			112,072			$	109,669			112,072

Loans_Receivable_Net_Tables

Loans Receivable, Net (Tables)	9 Months Ended
	Sep. 30, 2014
Receivables [Abstract]	'
Schedule of Accounts, Notes, Loans and Financing Receivable	'
	The detail of the loan portfolio as of September 30, 2014 and December 31, 2013 was as follows:
		September 30,				December 31,
		2014				2013
		(In thousands)
	Residential mortgage loans	$	5,826,301			5,692,810
	Multi-family loans	4,715,936				3,985,517
	Commercial real estate loans	2,802,403				2,485,937
	Construction loans	154,945				194,542
	Consumer and other loans	435,246				403,929
	Commercial and industrial loans	412,879				265,836
	Total loans excluding PCI loans	14,347,710				13,028,571
	PCI loans	20,580				36,047
	Net unamortized premiums and deferred loan costs (1)	(7,883		)		(8,146	)
	Allowance for loan losses	(191,084		)		(173,928	)
	Net loans	$	14,169,323			12,882,544
	(1) Included in unamortized premiums and deferred loan costs are accretable purchase accounting adjustments in connection with loans acquired.
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period	'
	The following table presents information regarding the estimates of the contractually required payments, the cash flows expected to be collected and the estimated fair value of the PCI loans acquired in the Gateway Financial acquisition as of January 10, 2014:
		10-Jan-14
		(In thousands)
	Contractually required principal and interest	$	4,172
	Contractual cash flows not expected to be collected (non-accretable difference)	(1,024		)
	Expected cash flows to be collected	3,148
	Interest component of expected cash flows (accretable yield)	(216		)
	Fair value of acquired loans	$	2,932
	The following table presents information regarding the estimates of the contractually required payments, the cash flows expected to be collected and the estimated fair value of the PCI loans acquired in the Roma Financial acquisition as of December 6, 2013:
		6-Dec-13
		(In thousands)
	Contractually required principal and interest	$	46,231
	Contractual cash flows not expected to be collected (non-accretable difference)	(16,441		)
	Expected cash flows to be collected	29,790
	Interest component of expected cash flows (accretable yield)	(3,425		)
	Fair value of acquired loans	$	26,365
Schedule of Accretable Yield Movement	'
	The following table presents changes in the accretable yield for PCI loans during the three and nine months ended September 30, 2014 and 2013:
		Three Months Ended September 30,							Nine Months Ended September 30,
		2014				2013			2014				2013
		(In thousands)
	Balance, beginning of period	$	1,401			1,212			$	4,154			1,457
	Acquisitions	—				—			216				—
	Accretion (1)	(193		)		(135	)		(3,162		)		(380	)
	Net reclassification from non-accretable difference	—				—			—				—
	Balance, end of period	$	1,208			1,077			$	1,208			1,077
	(1) Includes the removal of $1.9 million accretable mark on PCI loans sold during the nine months ended September 30, 2014. This transfer had no impact on income for the nine months ended September 30, 2014
Summary of Analysis of the Allowance for Loan Losses	'
	An analysis of the allowance for loan losses is summarized as follows:
		Three Months Ended September 30,							Nine Months Ended September 30,
		2014				2013			2014				2013
		(In thousands)
	Balance at beginning of the period	$	186,070			154,467			$	173,928			142,172
	Loans charged off	(8,060		)		(2,484	)		(15,163		)		(19,219	)
	Recoveries	4,074				1,046			6,319				2,576
	Net charge-offs	(3,986		)		(1,438	)		(8,844		)		(16,643	)
	Provision for loan losses	9,000				13,750			26,000				41,250
	Balance at end of the period	$	191,084			166,779			$	191,084			166,779
ERROR in label resolution.	'
	The following tables present the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of September 30, 2014 and December 31, 2013:
		September 30, 2014
		Residential				Multi-			Commercial			Construction			Commercial			Consumer			Unallocated	Total
		Mortgage Loans				Family Loans			Real Estate Loans			Loans			and Industrial			and Other
															Loans			Loans
		(In thousands)
	Allowance for loan losses:
	Beginning balance-December 31, 2013	$	51,760			42,103			46,657			8,947			9,273			2,161			13,027	173,928
	Charge-offs	(5,710		)		(292	)		(5,520	)		(505	)		(2,447	)		(689	)		—	(15,163	)
	Recoveries	1,255				3,715			187			782			380			—			—	6,319
	Provision	1,805				3,389			11,437			(3,516	)		10,366			1,127			1,392	26,000
	Ending balance-September 30, 2014	$	49,110			48,915			52,761			5,708			17,572			2,599			14,419	191,084
	Individually evaluated for impairment	$	1,867			—			—			—			—			—			—	1,867
	Collectively evaluated for impairment	47,243				48,915			52,761			5,708			17,572			2,599			14,419	189,217
	Loans acquired with deteriorated credit quality	—				—			—			—			—			—			—	—
	Balance at September 30, 2014	$	49,110			48,915			52,761			5,708			17,572			2,599			14,419	191,084
	Loans:
	Individually evaluated for impairment	$	23,019			3,550			23,477			15,543			1,473			—			—	67,062
	Collectively evaluated for impairment	5,803,282				4,712,386			2,778,926			139,402			411,406			435,246			—	14,280,648
	Loans acquired with deteriorated credit quality	5,093				633			9,525			4,810			56			463			—	20,580
	Balance at September 30, 2014	$	5,831,394			4,716,569			2,811,928			159,755			412,935			435,709			—	14,368,290
		December 31, 2013
		Residential				Multi-			Commercial			Construction			Commercial			Consumer			Unallocated	Total
		Mortgage Loans				Family Loans			Real Estate Loans			Loans			and Industrial			and Other
															Loans			Loans
		(In thousands)
	Allowance for loan losses:
	Beginning balance-December 31, 2012	$	45,369			29,853			33,347			16,062			4,094			2,086			11,361	142,172
	Charge-offs	(15,508		)		(1,266	)		(1,101	)		(3,424	)		(516	)		(795	)		—	(22,610	)
	Recoveries	2,528				219			65			315			604			135			—	3,866
	Provision	19,371				13,297			14,346			(4,006	)		5,091			735			1,666	50,500
	Ending balance-December 31, 2013	$	51,760			42,103			46,657			8,947			9,273			2,161			13,027	173,928
	Individually evaluated for impairment	$	2,066			—			—			—			—			—			—	2,066
	Collectively evaluated for impairment	49,694				42,103			46,657			8,947			9,273			2,161			13,027	171,862
	Loans acquired with deteriorated credit quality	—				—			—			—			—			—			—	—
	Balance at December 31, 2013	$	51,760			42,103			46,657			8,947			9,273			2,161			13,027	173,928
	Loans:
	Individually evaluated for impairment	$	20,987			15,313			11,713			17,037			1,612			—			—	66,662
	Collectively evaluated for impairment	5,671,823				3,970,204			2,474,224			177,505			264,224			403,929			—	12,961,909
	Loans acquired with deteriorated credit quality	5,541				691			19,390			7,719			2,586			120			—	36,047
	Balance at December 31, 2013	$	5,698,351			3,986,208			2,505,327			202,261			268,422			404,049			—	13,064,618
Schedule of Risk Category of Loans by Class of Loans	'
	The following tables present the risk category of loans as of September 30, 2014 and December 31, 2013 by class of loans excluding PCI loans:
		September 30, 2014
		Pass				Special Mention			Substandard			Doubtful			Loss			Total
		(In thousands)
	Residential	$	5,698,848			31,575			95,878			—			—			5,826,301
	Multi-family	4,640,667				71,088			4,181			—			—			4,715,936
	Commercial real estate	2,708,011				15,980			78,412			—			—			2,802,403
	Construction	138,013				1,743			15,189			—			—			154,945
	Commercial and industrial	389,146				14,882			8,851			—			—			412,879
	Consumer and other	428,879				2,548			3,819			—			—			435,246
	Total	$	14,003,564			137,816			206,330			—			—			14,347,710
	Need to tag consumer and other
		December 31, 2013
		Pass				Special Mention			Substandard			Doubtful			Loss			Total
		(In thousands)
	Residential	$	5,584,728			23,252			84,830			—			—			5,692,810
	Multi-family	3,919,808				49,199			16,510			—			—			3,985,517
	Commercial real estate	2,389,086				23,739			73,112			—			—			2,485,937
	Construction	158,576				7,847			28,119			—			—			194,542
	Commercial and industrial	247,983				7,540			10,313			—			—			265,836
	Consumer and other	400,890				1,065			1,974			—			—			403,929
	Total	$	12,701,071			112,642			214,858			—			—			13,028,571
Payment Status of the Recorded Investment in Past Due Loans	'
	The following tables present the payment status of the recorded investment in past due loans as of September 30, 2014 and December 31, 2013 by class of loans excluding PCI loans:
		September 30, 2014
		30-59 Days				60-89 Days			Greater			Total Past			Current			Total
									than 90			Due						Loans
									Days									Receivable
		(In thousands)
	Residential mortgage	$	22,485			12,362			76,868			111,715			5,714,586			5,826,301
	Multi-family	35,728				13,010			1,874			50,612			4,665,324			4,715,936
	Commercial real estate	5,259				428			14,645			20,332			2,782,071			2,802,403
	Construction	180				1,326			12,805			14,311			140,634			154,945
	Commercial and industrial	2,178				503			819			3,500			409,379			412,879
	Consumer and other	1,872				676			3,818			6,366			428,880			435,246
	Total	$	67,702			28,305			110,829			206,836			14,140,874			14,347,710
		December 31, 2013
		30-59 Days				60-89 Days			Greater			Total Past			Current			Total
									than 90			Due						Loans
									Days									Receivable
		(In thousands)
	Residential mortgage	$	17,779			7,358			66,079			91,216			5,601,594			5,692,810
	Multi-family	1,408				218			3,588			5,214			3,980,303			3,985,517
	Commercial real estate	16,380				10,247			2,091			28,718			2,457,219			2,485,937
	Construction	302				527			16,181			17,010			177,532			194,542
	Commercial and industrial	5,871				287			775			6,933			258,903			265,836
	Consumer and other	897				168			1,973			3,038			400,891			403,929
	Total	$	42,637			18,805			90,687			152,129			12,876,442			13,028,571
Non-Accrual Loans Status	'
	The following table presents non-accrual loans excluding PCI loans at the dates indicated:
		September 30, 2014							December 31, 2013
		# of loans			amount				# of loans			amount
		(Dollars in thousands)
	Non-accrual:
	Residential and consumer	383			$	85,888			304			$	74,282
	Construction	6			12,806				18			16,181
	Multi-family	1			1,874				5			5,905
	Commercial real estate	29			14,645				12			2,711
	Commercial and industrial	4			819				4			1,281
	Total non-accrual loans	423			$	116,032			343			$	100,360
Loans Individually Evaluated for Impairment by Class of Loans	'
	The following tables present loans individually evaluated for impairment by portfolio segment as of September 30, 2014 and December 31, 2013:
		September 30, 2014
		Recorded				Unpaid Principal			Related			Average			Interest
		Investment				Balance			Allowance			Recorded			Income
												Investment			Recognized
		(In thousands)
	With no related allowance:
	Residential mortgage	$	6,578			8,946			—			5,898			318
	Multi-family	3,550				7,298			—			7,547			99
	Commercial real estate	23,477				28,855			—			15,788			695
	Construction	15,543				16,737			—			16,169			326
	Commercial and industrial	1,473				1,473			—			1,560			66
	With an allowance recorded:
	Residential mortgage	16,441				16,792			1,867			16,680			381
	Multi-family	—				—			—			—			—
	Commercial real estate	—				—			—			—			—
	Construction	—				—			—			—			—
	Commercial and industrial	—				—			—			—			—
	Total:
	Residential mortgage	23,019				25,738			1,867			22,578			699
	Multi-family	3,550				7,298			—			7,547			99
	Commercial real estate	23,477				28,855			—			15,788			695
	Construction	15,543				16,737			—			16,169			326
	Commercial and industrial	1,473				1,473			—			1,560			66
	Total impaired loans	$	67,062			80,101			1,867			63,642			1,885
		December 31, 2013
		Recorded				Unpaid Principal			Related			Average			Interest
		Investment				Balance			Allowance			Recorded			Income
												Investment			Recognized
		(In thousands)
	With no related allowance:
	Residential mortgage	$	3,924			5,607			—			3,330			190
	Multi-family	15,313				28,681			—			15,405			428
	Commercial real estate	11,713				12,223			—			11,538			679
	Construction	17,037				26,642			—			19,157			198
	Commercial and industrial	1,612				1,612			—			1,490			105
	With an allowance recorded:
	Residential mortgage	17,063				17,457			2,066			15,880			753
	Multi-family	—				—			—			—			—
	Commercial real estate	—				—			—			—			—
	Construction	—				—			—			—			—
	Commercial and industrial	—				—			—			—			—
	Total:
	Residential mortgage	20,987				23,064			2,066			19,210			943
	Multi-family	15,313				28,681			—			15,405			428
	Commercial real estate	11,713				12,223			—			11,538			679
	Construction	17,037				26,642			—			19,157			198
	Commercial and industrial	1,612				1,612			—			1,490			105
	Total impaired loans	$	66,662			92,222			2,066			66,800			2,353
Troubled Debt Restructured Loans	'
	The following tables present the total troubled debt restructured loans at September 30, 2014 and December 31, 2013 excluding PCI loans:
		September 30, 2014
		Accrual							Non-accrual							Total
		# of loans			Amount				# of loans			Amount				# of loans			Amount
		(Dollars in thousands)
	Residential mortgage	41			$	14,578			27			$	8,453			68			$	23,031
	Multi-family	2			1,677				—			—				2			1,677
	Commercial real estate	8			14,445				1			3,208				9			17,653
	Commercial and industrial	2			1,473				—			—				2			1,473
	Construction	2			3,058				—			—				2			3,058
		55			$	35,231			28			$	11,661			83			$	46,892
		December 31, 2013
		Accrual							Non-accrual							Total
		# of loans			Amount				# of loans			Amount				# of loans			Amount
		(Dollars in thousands)
	Residential mortgage	35			$	12,975			26			$	8,021			61			$	20,996
	Multi-family	4			9,844				1			2,317				5			12,161
	Commercial real estate	7			11,093				1			620				8			11,713
	Commercial and industrial	1			1,106				1			506				2			1,612
	Construction	3			4,552				—			—				3			4,552
		50			$	39,570			29			$	11,464			79			$	51,034
Schedule of Troubled Debt Restructurings	'
	The following tables present information about troubled debt restructurings which occurred during the three and nine months ended September 30, 2014 and 2013:
		Three Months Ended September 30,
		2014											2013
		Number of			Pre-modification				Post-				Number of		Pre-modification				Post-
		Loans			Recorded				modification				Loans		Recorded				modification
					Investment				Recorded						Investment				Recorded
									Investment										Investment
		(Dollars in thousands)
	Troubled Debt Restructings:
	Residential mortgage	—			$	—			$	—			9		$	3,225			$	2,842
	Commercial real estate	2			9,549				6,549				—		—				—
	Commercial and industrial	—			—				—				1		521				521
		Nine Months Ended September 30,
		2014											2013
		Number of			Pre-modification				Post-				Number of			Pre-modification				Post-
		Loans			Recorded				modification				Loans			Recorded				modification
					Investment				Recorded							Investment				Recorded
									Investment											Investment
		(Dollars in thousands)
	Troubled Debt Restructings:
	Residential mortgage	8			$	2,546			$	2,546			20			$	8,723			$	8,155
	Multi-family	—			—				—				3			18,037				10,420
	Commercial real estate	3			10,657				7,657				4			5,080				4,679
	Construction	—			—				—				1			2,640				2,640
	Commercial and industrial	—			—				—				1			521				521
	The following tables present information about pre and post modification interest yield for troubled debt restructurings which occurred during the three and nine months ended September 30, 2014 and 2013:
		Three Months Ended September 30,
		2014									2013
		Number of			Pre-modification			Post-			Number of			Pre-modification			Post-
		Loans			Interest Yield			modification			Loans			Interest Yield			modification
								Interest Yield									Interest Yield
	Troubled Debt Restructings:
	Residential mortgage	—			—	%		—	%		9			4.44	%		3.14	%
	Commercial real estate	2			6.42			5.49			—			—			—
	Commercial and industrial	—			—			—			1			6			4
		Nine Months Ended September 30,
		2014									2013
		Number of			Pre-modification			Post-			Number of			Pre-modification			Post-
		Loans			Interest Yield			modification			Loans			Interest Yield			modification
								Interest Yield									Interest Yield
	Troubled Debt Restructings:
	Residential mortgage	8			5.18	%		3.57	%		20			5.03	%		3.33	%
	Multi-family	—			—			—			3			8.61			3.81
	Commercial real estate	3			6.59			5.75			4			7.29			5.41
	Construction	—			—			—			1			5			3.75
	Commercial and industrial	—			—			—			1			6			4

Deposits_Tables

Deposits (Tables)	9 Months Ended
	Sep. 30, 2014
Banking and Thrift [Abstract]	'
Summary of Deposits	'
	Deposits are summarized as follows:
		September 30,		December 31,
		2014		2013
		(In thousands)
	Savings	$	2,200,315	2,212,034
	Checking accounts	3,750,306		3,163,250
	Money market deposits	2,443,289		1,958,982
	Total transaction accounts	8,393,910		7,334,266
	Certificates of deposit	3,077,688		3,384,545
	Total Deposits	$	11,471,598	10,718,811

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Summary of Intangible Assets	'
	The following table summarizes other intangible assets as of September 30, 2014 and December 31, 2013:
		Gross Intangible Asset		Accumulated Amortization		Valuation Allowance		Net Intangible Assets
		(In thousands)
	September 30, 2014
	Mortgage servicing rights	$	23,494	(9,008	)	(81	)	14,405
	Core deposit premiums	25,058		(9,457	)	—		15,601
	Other	300		(103	)	—		197
	Total other intangible assets	$	48,852	(18,568	)	(81	)	30,203
	31-Dec-13
	Mortgage servicing rights	$	26,075	(11,292	)	(81	)	14,702
	Core deposit premiums	23,205		(6,569	)	—		16,636
	Other	300		(80	)	—		220
	Total other intangible assets	$	49,580	(17,941	)	(81	)	31,558

Equity_Incentive_Plan_Tables

Equity Incentive Plan (Tables)	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Summary of Stock Compensation	'
	The following table presents the share based compensation expense for the three and nine months ended September 30, 2014 and 2013:
		Three Months Ended September 30,					Nine Months Ended September 30,
		2014			2013		2014		2013
		(Dollars in thousands)
	Stock option expense	$	11		109		1,775		278
	Restricted stock expense	—			786		11,922		2,400
	Total share based compensation expense	$	11		895		13,697		2,678
Summary of Stock Option Activity and Related Information	'
	The following is a summary of the Company’s stock option activity and related information for its option plan for the nine months ended September 30, 2014:
			Number of		Weighted			Weighted	Aggregate
			Stock		Average			Average	Intrinsic
			Options		Exercise			Remaining	Value
					Price			Contractual
								Life
	Outstanding at December 31, 2013		11,299,351		$	5.99		3.7	$	45,652
	Granted		144,177		10.29
	Exercised		(2,047,889	)	6
	Forfeited		(3,060	)	8.69
	Expired		(44,648	)	5.74
	Outstanding at September 30, 2014		9,347,931		$	6.06		3	$	38,108
	Exercisable at September 30, 2014		9,319,213		$	6.04		3	$	38,108
Summary of Non-Vested Options and Restricted Shares	'
	The following is a summary of the status of the Company’s restricted shares as of September 30, 2014 and changes therein during the nine months ended:
			Number of		Weighted
			Shares		Average
			Awarded		Grant Date
					Fair Value
	Non-vested at December 31, 2013		2,655,585		$	5.37
	Granted		38,250		10.19
	Vested		(2,685,457	)	5.44
	Forfeited		(8,378	)	5.08
	Non-vested at September 30, 2014		—		$	—

Net_Periodic_Benefit_Plan_Expe1

Net Periodic Benefit Plan Expense (Tables)	9 Months Ended
	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Components of Net Periodic Benefit Cost	'
	The components of net periodic benefit cost are as follows:
		Three Months Ended September 30,			Nine Months Ended September 30,
		2014		2013	2014		2013
		(In thousands)
	Service cost	$	580	450	$	1,740	1,349
	Interest cost	331		227	992		681
	Expected return on plan assets	—		—	—		—
	Amortization of:
	Prior service cost	24		24	73		73
	Net gain	158		165	474		495
	Total net periodic benefit cost	$	1,093	866	$	3,279	2,598

Comprehensive_Income_Loss_Tabl

Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Components of Comprehensive Income (Loss), Gross and Net Of Tax	'
	The components of comprehensive income (loss), both gross and net of tax, are as follows:
		Three Months Ended September 30,
		2014								2013
		Gross			Tax		Net			Gross			Tax		Net
		(In thousands)
	Net income	$	62,133		(23,092	)	39,041			45,334			(16,053	)	29,281
	Other comprehensive loss:
	Change in funded status of retirement obligations	182			(73	)	109			239			(98	)	141
	Unrealized (loss) gain on securities available-for-sale	(3,973		)	1,644		(2,329	)		185			(33	)	152
	Accretion of loss on securities reclassified to held-to- maturity from available-for-sale	745			(304	)	441			849			(347	)	502
	Other-than-temporary impairment accretion on debt securities	336			(137	)	199			1,084			(443	)	641
	Total other comprehensive (loss) income	(2,710		)	1,130		(1,580	)		2,357			(921	)	1,436
	Total comprehensive income	$	59,423		(21,962	)	37,461			47,691			(16,974	)	30,717
		Nine Months Ended September 30,
		2014								2013
		Gross			Tax		Net			Gross			Tax		Net
		(In thousands)
	Net income	$	141,848		(53,204	)	88,644			131,190			(46,666	)	84,524
	Other comprehensive loss:
	Change in funded status of retirement obligations	547			(220	)	327			717			(293	)	424
	Unrealized gain (loss) on securities available-for-sale	5,874			(2,319	)	3,555			(18,051	)		7,437		(10,614	)
	Net loss on securities reclassified from available-for- sale to held-to-maturity	—			—		—			(12,243	)		5,001		(7,242	)
	Accretion of loss on securities reclassified to held-to- maturity from available-for-sale	2,215			(905	)	1,310			849			(347	)	502
	Reclassification adjustment for gain included in net income	(233		)	95		(138	)		(684	)		279		(405	)
	Other-than-temporary impairment accretion on debt securities	1,007			(411	)	596			1,745			(713	)	1,032
	Total other comprehensive income (loss)	9,410			(3,760	)	5,650			(27,667	)		11,364		(16,303	)
	Total comprehensive income	$	151,258		(56,964	)	94,294			103,523			(35,302	)	68,221
Component of Accumulated Other Comprehensive Loss	'
	The following table presents the after-tax changes in the balances of each component of accumulated other comprehensive loss for the nine months ended September 30, 2014 and 2013:
		Change in			Net unrealized gains (losses) on investment securities		Total
		funded status of					accumulated
		retirement					other
		obligations					comprehensive
							loss
	Balance - December 31, 2013	$	(5,869	)	(19,827	)	(25,696	)
	Net change	327			5,323		5,650
	Balance - September 30, 2014	$	(5,542	)	(14,504	)	(20,046	)
	Balance - December 31, 2012	$	(5,879	)	(1,728	)	(7,607	)
	Net change	424			(16,727	)	(16,303	)
	Balance - September 30, 2013	$	(5,455	)	(18,455	)	(23,910	)
	The following table sets for information about amounts reclassified from accumulated other comprehensive loss to the consolidated statement of income and the affected line item in the statement where net income is presented.
		Three Months Ended September 30,					Nine Months Ended September 30,
		2014			2013		2014				2013
		(In thousands)
	Reclassification adjustment for gains included in net income
	Gain on security transactions	$	—		—		$	(233	)		(684	)
	Change in funded status of retirement obligations (1)
	Compensation and fringe benefits:
	Amortization of net obligation or asset	6			8		19				25
	Amortization of prior service cost	31			37		93				110
	Amortization of net gain	145			194		435				583
	Compensation and fringe benefits	182			239		547				718
	Total before tax	182			239		314				34
	Income tax benefit	(73		)	(98	)	(131		)		(14	)
	Net of tax	$	109		141		$	183			20
	(1) These accumulated other comprehensive loss components are included in the computations of net periodic cost for our defined benefit plans and other post-retirement benefit plan. See Note 9 for additional details.

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value, Assets Measured on Recurring Basis	'
	The following table provides the level of valuation assumptions used to determine the carrying value of our assets measured at fair value on a recurring basis at September 30, 2014 and December 31, 2013, respectively.
		Carrying Value at September 30, 2014
		Total				Level 1		Level 2		Level 3
		(In thousands)
	Securities available for sale:
	Equity securities	$	8,391			—		8,391		—
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	448,327				—		448,327		—
	Federal National Mortgage Association	589,103				—		589,103		—
	Government National Mortgage Association	141				—		141		—
	Total mortgage-backed securities available-for-sale	1,037,571				—		1,037,571		—
	Total securities available-for-sale	$	1,045,962			—		1,045,962		—
		Carrying Value at December 31, 2013
		Total				Level 1		Level 2		Level 3
		(In thousands)
	Securities available for sale:
	Equity securities	$	8,444			—		8,444		—
	Debt securities:
	Government-sponsored enterprises	3,004				—		3,004		—
	Corporate and other debt securities	670				—		—		670
	Mortgage-backed securities:
	Federal Home Loan Mortgage Corporation	363,088				—		363,088		—
	Federal National Mortgage Association	409,559				—		409,559		—
	Government National Mortgage Association	267				—		267		—
	Total mortgage-backed securities available-for-sale	772,914				—		772,914		—
	Total securities available-for-sale	$	785,032			—		784,362		670
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	'
	The changes in Level 3 assets measured at fair value on a recurring basis for the nine months ended September 30, 2014 and 2013 are summarized below:
		Nine Months Ended September 30,
		2014				2013
		(Dollars in thousands)
	Balance beginning of period (1)	$	670			—
	Transfers from held-to-maturity	—				—
	Total net (losses) gains for the period included in:
	Net income	470				—
	Other comprehensive income (loss)	(229		)		—
	Sales	(911		)		—
	Settlements	—				—
	Balance end of period	$	—			—
	(1) Represents a trust preferred security transferred to available-for-sale from held-to-maturity at its fair value on December 31, 2013 due to the impact of the Volcker Rule adopted in December 2013. The Volcker Rule requires specific treatment of certain collateralized debt obligation backed by trust preferred securities.
Carrying Value Of Our Assets Measured At Fair Value On A Non-Recurring Basis	'
	The following table provides the level of valuation assumptions used to determine the carrying value of our assets measured at fair value on a non-recurring basis at September 30, 2014 and December 31, 2013. For the three months ended September 30, 2014 and December 31, 2013, there was no change to the carrying value of MSR and impaired loans measured at fair value on a non-recurring basis.
	Security Type	Valuation Technique	Unobservable Input	Range	Weighted Average	Carrying Value at September 30, 2014
						Total		Level 1	Level 2		Level 3
						(In thousands)
	Other real estate owned	Market comparable	Lack of marketability	0.0% - 25.0%	15.55%	$	684	—	—		684
						$	684	—	—		684
	Security Type	Valuation Technique	Unobservable Input	Range	Weighted Average	Carrying Value at December 31, 2013
						Total		Level 1	Level 2		Level 3
						(In thousands)
	Other real estate owned	Market comparable	Lack of marketability	0.0% - 25.0%	2.42%	$	929	—	—		929
						$	929	—	—		929
Carrying Amounts And Estimated Fair Values	'
	The carrying values and estimated fair values of the Company’s financial instruments are presented in the following tables.
		September 30, 2014
		Carrying				Estimated Fair Value
		value				Total		Level 1		Level 2		Level 3
		(In thousands)
	Financial assets:
	Cash and cash equivalents	$	238,166			238,166		238,166		—		—
	Securities available-for-sale	1,045,962				1,045,962		—		1,045,962		—
	Securities held-to-maturity	1,514,374				1,547,389		—		1,482,702		64,687
	Stock in FHLB	140,990				140,990		140,990		—		—
	Loans held for sale	6,986				6,986		—		6,986		—
	Net loans	14,169,323				14,015,727		—		—		14,015,727
	Financial liabilities:
	Deposits, other than time deposits	8,393,910				8,393,910		8,393,910		—		—
	Time deposits	3,077,688				3,089,598		—		3,089,598		—
	Borrowed funds	2,536,594				2,563,294		—		2,563,294		—
		December 31, 2013
		Carrying				Estimated Fair Value
		value				Total		Level 1		Level 2		Level 3
		(In thousands)
	Financial assets:
	Cash and cash equivalents	$	250,689			250,689		250,689		—		—
	Securities available-for-sale	785,032				785,032		—		784,362		670
	Securities held-to-maturity	831,819				839,064		—		790,460		48,604
	Stock in FHLB	178,126				178,126		178,126		—		—
	Loans held for sale	8,273				8,273		—		8,273		—
	Net loans	12,882,544				12,598,551		—		—		12,598,551
	Financial liabilities:
	Deposits, other than time deposits	7,334,266				7,334,266		7,334,266		—		—
	Time deposits	3,384,545				3,410,202		—		3,410,202		—
	Borrowed funds	3,367,274				3,337,419		—		3,337,419		—

Basis_of_Presentation_Narrativ

Basis of Presentation (Narrative) (Details) (USD $)	0 Months Ended	9 Months Ended		0 Months Ended
In Billions, except Share data, unless otherwise specified	7-May-14	Sep. 30, 2014	Sep. 30, 2013	7-May-14	7-May-14	7-May-14	7-May-14
				Predecessor	Successor	Successor	Successor
				Investors Bancorp, MHC	IPO	IPO	IPO
							Investors Charitable Foundation
Class of Stock [Line Items]	'	'	'	'	'	'	'
Percentage of ownership	'	'	'	62.00%	'	'	'
Net proceeds by selling shares	$2.15	'	'	'	'	'	'
Stock price	'	'	'	'	$10	$10	'
Stock issued due to the formation of the new company	'	213,963,274	'	'	219,580,695	'	1,000,000
Shares converted (per share)	'	'	'	'	'	2.55	'
Stock issued in exchange for old shares as a part of the conversion	'	'	'	'	'	137,560,968	'
Treasury stock as a result of the merger	'	1,295,193	195,491	'	'	1,101,694	'

Business_Combinations_Narrativ

Business Combinations (Narrative) (Details) (USD $)	9 Months Ended		0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Jan. 10, 2014	Dec. 06, 2013	Jan. 10, 2014	Dec. 06, 2013	Dec. 06, 2013	Dec. 06, 2013
			Gateway Community Financial Corporation	Roma Financial Corporation	Investors Bancorp, MHC	Investors Bancorp, MHC	Roma Public Stockholders	Core Deposit Premium
			Branches	branch	Gateway Community Financial Corporation	Roma Financial Corporation	Roma Financial Corporation	Roma Financial Corporation
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'
Number of branches acquired	'	'	4	26	'	'	'	'
Liabilities assumes, customer deposit	'	'	$254,700,000	$1,341,200,000	'	'	'	'
Loans receivable	'	'	195,100,000	991,000,000	'	'	'	'
Intangibles assumed	'	'	1,900,000	9,500,000	'	'	'	8,900,000
Gain on bargain purchase	($1,482,000)	$0	($1,500,000)	'	'	'	'	'
Purchase price, common stock issued	'	'	'	66,089,974	1,945,079	49,834,130	16,255,845	'
Shares exchange ratio	'	'	'	0.8653	'	'	'	'

Business_Combinations_Summary_

Business Combinations (Summary of Estimated Fair Values of the Assets Acquired and Liabilities Assumed) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Jan. 10, 2014	Dec. 06, 2013
In Millions, unless otherwise specified			Gateway Community Financial Corporation	Roma Financial Corporation
Business Acquisition [Line Items]	'	'	'	'
Cash and cash equivalents, net	'	'	$17.90	$118.20
Securities available-for-sale	'	'	50.3	382
Securities held to maturity	'	'	'	13.6
Loans receivable	'	'	195.1	991
Accrued interest receivable	'	'	0.7	3.8
Other real estate owned	'	'	0.4	5.3
Office properties and equipment, net	'	'	4.3	30.7
Goodwill	77.6	77.6	'	0.3
Intangible assets	'	'	1.9	9.5
Other assets	'	'	15.9	78.5
Total assets acquired	'	'	286.5	1,632.90
Deposits	'	'	-254.7	-1,341.20
Borrowed funds	'	'	-5.2	-92.1
Other liabilities	'	'	-3.1	-20.5
Total liabilities assumed	'	'	-263	-1,453.80
Net assets acquired	'	'	$23.50	$179.10

Earnings_Per_Share_Summary_of_

Earnings Per Share (Summary of Calculations and Reconciliation of Basic to Diluted Earnings Per Share) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share Reconciliation [Abstract]	'	'	'	'
Net income	$39,041	$29,281	$88,644	$84,524
Income available to common stockholders, Basic	39,041	29,281	88,644	84,524
Income available to common stockholders, Basic, Shares	343,493,691	275,229,343	344,494,901	274,801,234
Basic earnings per share	$0.11	$0.11	$0.26	$0.31
Effect of dilutive common stock equivalents, Basic, Shares	3,279,852	3,632,571	3,617,839	3,205,648
Income available to common stockholders, Diluted	$39,041	$29,281	$88,644	$84,524
Income available to common stockholders, Diluted, Shares	346,773,543	278,861,914	348,112,740	278,006,882
Diluted earnings per share	$0.11	$0.11	$0.25	$0.30
Equity awards	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Securities excluded from computation of diluted earnings per share	28,713	495,771	143,463	495,771

Securities_Narrative_Details

Securities (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Investment [Line Items]	'	'	'	'	'
Carrying value of held to maturity security	$1,514,374,000	'	$1,514,374,000	'	$831,819,000
Fair Value	1,547,389,000	'	1,547,389,000	'	839,064,000
Fair value of OTTI	38,000	'	'	'	'
Non credit-related OTTI	'	'	25,400,000	'	'
Non credit-related OTTI, after-tax	'	'	15,000,000	'	'
Net gain on available-for-sale	29,000	'	669,000	'	'
Gross realized gain from sale of Available-for-sale securities	'	'	474,000	846,100	'
Gain on securities transactions	29,000	15,000	669,000	706,000	'
Gain (loss) on capital distributions of equity securities	'	15,000	145,000	22,000	'
Sale proceeds from sale of Available-for-sale securities,	'	'	56,000,000	'	'
Gross realized losses	'	'	'	162,300	'
Corporate and other debt securities	'	'	'	'	'
Investment [Line Items]	'	'	'	'	'
Number of pooled trust preferred securities	34	'	34	'	'
Number of securities in unrealized loss position	1	'	1	'	'
Carrying value of held to maturity security	32,700,000	'	32,700,000	'	'
Fair Value	64,700,000	'	64,700,000	'	'
Contractual maturities of mortgage-backed securities, years	'	'	'20 years	'	'
TruP Security [Member]	'	'	'	'	'
Investment [Line Items]	'	'	'	'	'
Gain on securities transactions	'	'	$50,000	'	'

Securities_Summary_of_Securiti

Securities (Summary of Securities) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized cost	$1,548,116,000	$868,783,000
Net unrealized losses	-33,742,000	-36,964,000
Carrying value of held to maturity security	1,514,374,000	831,819,000
Gross unrealized gains	41,156,000	25,704,000
Gross unrealized losses	-8,141,000	-18,459,000
Fair Value	1,547,389,000	839,064,000
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying value	1,037,813,000	782,759,000
Gross unrecognized gains	12,299,000	9,990,000
Gross unrecognized losses	-4,150,000	-7,717,000
Estimated fair value	1,045,962,000	785,032,000
Equity Securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying value	6,887,000	7,148,000
Gross unrecognized gains	1,504,000	1,315,000
Gross unrecognized losses	0	-19,000
Estimated fair value	8,391,000	8,444,000
Government-sponsored enterprises	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Gross unrealized losses	-4,000	-18,000
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying value	'	3,004,000
Gross unrecognized gains	'	0
Gross unrecognized losses	'	0
Estimated fair value	'	3,004,000
Corporate and other debt securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Carrying value of held to maturity security	32,700,000	'
Gross unrealized losses	-401,000	-1,392,000
Fair Value	64,700,000	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying value	'	670,000
Gross unrecognized gains	'	0
Gross unrecognized losses	'	0
Estimated fair value	'	670,000
Mortgage-backed securities:	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Gross unrealized losses	-7,736,000	-17,049,000
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying value	1,030,926,000	771,937,000
Gross unrecognized gains	10,795,000	8,675,000
Gross unrecognized losses	-4,150,000	-7,698,000
Estimated fair value	1,037,571,000	772,914,000
Federal Home Loan Mortgage Corporation	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Gross unrealized losses	-3,574,000	-7,646,000
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying value	445,209,000	362,876,000
Gross unrecognized gains	5,088,000	4,055,000
Gross unrecognized losses	-1,970,000	-3,843,000
Estimated fair value	448,327,000	363,088,000
Federal National Mortgage Association	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Gross unrealized losses	-3,930,000	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying value	585,577,000	408,794,000
Gross unrecognized gains	5,706,000	4,620,000
Gross unrecognized losses	-2,180,000	-3,855,000
Estimated fair value	589,103,000	409,559,000
Government National Mortgage Association	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Gross unrealized losses	-232,000	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying value	140,000	267,000
Gross unrecognized gains	1,000	0
Gross unrecognized losses	0	0
Estimated fair value	141,000	267,000
Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized cost	77,873,000	75,606,000
Net unrealized losses	-25,384,000	-26,391,000
Carrying value of held to maturity security	52,489,000	49,215,000
Gross unrealized gains	33,329,000	20,802,000
Gross unrealized losses	-405,000	-1,410,000
Fair Value	85,413,000	68,607,000
Government-sponsored enterprises	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized cost	4,427,000	4,542,000
Net unrealized losses	0	0
Carrying value of held to maturity security	4,427,000	4,542,000
Gross unrealized gains	1,000	0
Gross unrealized losses	-4,000	-18,000
Fair Value	4,424,000	4,524,000
Municipal Bonds	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized cost	15,359,000	14,992,000
Net unrealized losses	0	0
Carrying value of held to maturity security	15,359,000	14,992,000
Gross unrealized gains	943,000	487,000
Gross unrealized losses	0	0
Fair Value	16,302,000	15,479,000
Corporate and other debt securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized cost	58,087,000	56,072,000
Net unrealized losses	-25,384,000	-26,391,000
Carrying value of held to maturity security	32,703,000	29,681,000
Gross unrealized gains	32,385,000	20,315,000
Gross unrealized losses	-401,000	-1,392,000
Fair Value	64,687,000	48,604,000
Mortgage-backed securities:	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized cost	1,470,243,000	793,177,000
Net unrealized losses	-8,358,000	-10,573,000
Carrying value of held to maturity security	1,461,885,000	782,604,000
Gross unrealized gains	7,827,000	4,902,000
Gross unrealized losses	-7,736,000	-17,049,000
Fair Value	1,461,976,000	770,457,000
Federal Home Loan Mortgage Corporation	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized cost	480,817,000	308,890,000
Net unrealized losses	-4,139,000	-5,273,000
Carrying value of held to maturity security	476,678,000	303,617,000
Gross unrealized gains	2,448,000	1,901,000
Gross unrealized losses	-3,574,000	-7,646,000
Fair Value	475,552,000	297,872,000
Federal National Mortgage Association	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized cost	960,560,000	483,916,000
Net unrealized losses	-4,219,000	-5,300,000
Carrying value of held to maturity security	956,341,000	478,616,000
Gross unrealized gains	5,379,000	3,001,000
Gross unrealized losses	-3,930,000	-9,403,000
Fair Value	957,790,000	472,214,000
Government National Mortgage Association	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized cost	28,635,000	'
Net unrealized losses	0	'
Carrying value of held to maturity security	28,635,000	'
Gross unrealized gains	0	'
Gross unrealized losses	-232,000	'
Fair Value	28,403,000	'
Federal housing authorities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized cost	231,000	371,000
Net unrealized losses	0	0
Carrying value of held to maturity security	231,000	371,000
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Fair Value	$231,000	$371,000

Securities_Investment_Securiti

Securities (Investment Securities, Continuous Unrealized Loss Position And Fair Value) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Open Option Contracts Written [Line Items]	'	'
Available-for-sale securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	$232,252	$375,305
Available-for-sale securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	1,310	7,717
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	159,283	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	2,840	0
Available-for-sale securities, continuous unrealized loss position, Estimated fair value	391,535	375,305
Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments	4,150	7,717
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	689,605	643,156
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	3,366	16,799
Held-to-maturity securities, continuous unrealized loss position, 12 months or more, Estimated fair value	210,183	25,701
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	4,775	1,660
Held-to-maturity securities, continuous unrealized loss position, Estimated fair value	899,788	668,857
Held To Maturity Securities Accumulated Unrecognized Holding Loss	8,141	18,459
Marketable securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	921,857	1,018,461
Marketable Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses	4,676	24,516
Marketable securities, continuous unrealized loss position, 12 months or more, Estimated fair value	369,466	25,701
Marketable Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses	7,615	1,660
Marketable Securities Continuous Unrealized Loss Position Fair Value	1,291,323	1,044,162
Marketable Securities Continuous Unrealized Loss Position Aggregate Losses	12,291	26,176
Equity Securities	'	'
Open Option Contracts Written [Line Items]	'	'
Available-for-sale securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	'	506
Available-for-sale securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	'	19
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	'	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	'	0
Available-for-sale securities, continuous unrealized loss position, Estimated fair value	'	506
Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments	'	19
Debt Securities	'	'
Open Option Contracts Written [Line Items]	'	'
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	4,324	6,915
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	4	663
Held-to-maturity securities, continuous unrealized loss position, 12 months or more, Estimated fair value	144	376
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	401	747
Held-to-maturity securities, continuous unrealized loss position, Estimated fair value	4,468	7,291
Held To Maturity Securities Accumulated Unrecognized Holding Loss	405	1,410
Government-sponsored enterprises	'	'
Open Option Contracts Written [Line Items]	'	'
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	4,324	4,524
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	4	18
Held-to-maturity securities, continuous unrealized loss position, 12 months or more, Estimated fair value	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	'	0
Held-to-maturity securities, continuous unrealized loss position, Estimated fair value	4,324	4,524
Held To Maturity Securities Accumulated Unrecognized Holding Loss	4	18
Corporate and other debt securities	'	'
Open Option Contracts Written [Line Items]	'	'
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	0	2,391
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	0	645
Held-to-maturity securities, continuous unrealized loss position, 12 months or more, Estimated fair value	144	376
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	401	747
Held-to-maturity securities, continuous unrealized loss position, Estimated fair value	144	2,767
Held To Maturity Securities Accumulated Unrecognized Holding Loss	401	1,392
Mortgage-backed securities:	'	'
Open Option Contracts Written [Line Items]	'	'
Available-for-sale securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	'	374,799
Available-for-sale securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	'	7,698
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	'	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	'	0
Available-for-sale securities, continuous unrealized loss position, Estimated fair value	'	374,799
Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments	'	7,698
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	685,281	636,241
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	3,362	16,136
Held-to-maturity securities, continuous unrealized loss position, 12 months or more, Estimated fair value	210,039	25,325
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	4,374	913
Held-to-maturity securities, continuous unrealized loss position, Estimated fair value	895,320	661,566
Held To Maturity Securities Accumulated Unrecognized Holding Loss	7,736	17,049
Federal Home Loan Mortgage Corporation	'	'
Open Option Contracts Written [Line Items]	'	'
Available-for-sale securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	139,038	164,306
Available-for-sale securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	710	3,843
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	85,556	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	1,260	0
Available-for-sale securities, continuous unrealized loss position, Estimated fair value	224,594	164,306
Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments	1,970	3,843
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	209,681	245,491
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	1,570	6,989
Held-to-maturity securities, continuous unrealized loss position, 12 months or more, Estimated fair value	107,499	20,871
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	2,004	657
Held-to-maturity securities, continuous unrealized loss position, Estimated fair value	317,180	266,362
Held To Maturity Securities Accumulated Unrecognized Holding Loss	3,574	7,646
Federal National Mortgage Association	'	'
Open Option Contracts Written [Line Items]	'	'
Available-for-sale securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	93,214	210,493
Available-for-sale securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	600	3,855
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	73,727	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	1,580	0
Available-for-sale securities, continuous unrealized loss position, Estimated fair value	166,941	210,493
Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments	2,180	3,855
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	447,197	'
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	1,560	'
Held-to-maturity securities, continuous unrealized loss position, 12 months or more, Estimated fair value	102,540	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	2,370	'
Held-to-maturity securities, continuous unrealized loss position, Estimated fair value	549,737	'
Held To Maturity Securities Accumulated Unrecognized Holding Loss	3,930	'
Government National Mortgage Association	'	'
Open Option Contracts Written [Line Items]	'	'
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	28,403	'
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	232	'
Held-to-maturity securities, continuous unrealized loss position, 12 months or more, Estimated fair value	0	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	'
Held-to-maturity securities, continuous unrealized loss position, Estimated fair value	28,403	'
Held To Maturity Securities Accumulated Unrecognized Holding Loss	232	'
Federal National Mortgage Association	'	'
Open Option Contracts Written [Line Items]	'	'
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Estimated fair value	'	390,750
Held-to-maturity securities, continuous unrealized loss position, Less than 12 months, Unrealized losses	'	9,147
Held-to-maturity securities, continuous unrealized loss position, 12 months or more, Estimated fair value	'	4,454
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	'	256
Held-to-maturity securities, continuous unrealized loss position, Estimated fair value	'	395,204
Held To Maturity Securities Accumulated Unrecognized Holding Loss	'	$9,403

Securities_Summary_of_Pooled_T

Securities (Summary of Pooled Trust Preferred Securities) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	$1,514,374,000	$831,819,000
Fair Value	1,547,389,000	839,064,000
Current deferrals and defaults, assumed recoveries range, low	1.20%	'
Assumed recoveries range, high	65.50%	'
Expected deferrals and defaults, assumed recoveries range, low	0.00%	'
Expected deferrals and defaults, assumed recoveries range, high	23.40%	'
Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	32,703,300	'
Fair Value	64,648,900	'
Unrecognized Gains (Losses)	31,945,700	'
Pref Pretsl IX | Moody's, Caa1 Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	405,300	'
Fair Value	726,600	'
Unrecognized Gains (Losses)	321,300	'
Number of Issuers Currently Performing	29	'
Current Deferrals and Defaults as a % of Total Collateral (1)	24.00%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	8.90%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl XXVI | Moody's, C Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	525,200	'
Fair Value	1,150,300	'
Unrecognized Gains (Losses)	625,100	'
Number of Issuers Currently Performing	54	'
Current Deferrals and Defaults as a % of Total Collateral (1)	24.10%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	12.80%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl XXV | Moody's, C Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	439,200	'
Fair Value	928,200	'
Unrecognized Gains (Losses)	489,000	'
Number of Issuers Currently Performing	52	'
Current Deferrals and Defaults as a % of Total Collateral (1)	25.70%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	12.90%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl XXI | Moody's, C Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	952,800	'
Fair Value	2,985,300	'
Unrecognized Gains (Losses)	2,032,600	'
Number of Issuers Currently Performing	53	'
Current Deferrals and Defaults as a % of Total Collateral (1)	19.00%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	12.10%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl XX | Moody's, C Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	407,600	'
Fair Value	729,900	'
Unrecognized Gains (Losses)	322,300	'
Number of Issuers Currently Performing	45	'
Current Deferrals and Defaults as a % of Total Collateral (1)	16.80%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	15.50%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl XIX | Moody's, C Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	722,900	'
Fair Value	1,254,200	'
Unrecognized Gains (Losses)	531,200	'
Number of Issuers Currently Performing	52	'
Current Deferrals and Defaults as a % of Total Collateral (1)	10.60%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	13.20%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl XVIII | Moody's, Ca Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	1,643,600	'
Fair Value	2,845,300	'
Unrecognized Gains (Losses)	1,201,700	'
Number of Issuers Currently Performing	55	'
Current Deferrals and Defaults as a % of Total Collateral (1)	22.00%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	9.90%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl XVII | Moody's, C Rating | Fitch, CC Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	743,500	'
Fair Value	1,594,600	'
Unrecognized Gains (Losses)	851,200	'
Number of Issuers Currently Performing	37	'
Current Deferrals and Defaults as a % of Total Collateral (1)	19.00%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	16.20%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl XV | Moody's, C Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	934,600	'
Fair Value	2,180,200	'
Unrecognized Gains (Losses)	1,245,700	'
Number of Issuers Currently Performing	57	'
Current Deferrals and Defaults as a % of Total Collateral (1)	11.60%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	13.20%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl VII | Moody's, Ca Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	400,900	'
Fair Value	1,876,500	'
Unrecognized Gains (Losses)	1,475,600	'
Number of Issuers Currently Performing	11	'
Current Deferrals and Defaults as a % of Total Collateral (1)	47.80%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	13.00%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl V | Moody's, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	17,100	'
Fair Value	17,100	'
Unrecognized Gains (Losses)	0	'
Number of Issuers Currently Performing	0	'
Current Deferrals and Defaults as a % of Total Collateral (1)	65.50%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	0.00%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl IV | Moody's, B1 Rating | Fitch, B Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	147,400	'
Fair Value	221,200	'
Unrecognized Gains (Losses)	73,800	'
Number of Issuers Currently Performing	6	'
Current Deferrals and Defaults as a % of Total Collateral (1)	18.10%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	7.50%	'
Excess Subordination as a % of Performing Collateral (3)	19.00%	'
Pretsl XXIV | Moody's, C Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	690,700	'
Fair Value	764,800	'
Unrecognized Gains (Losses)	74,000	'
Number of Issuers Currently Performing	60	'
Current Deferrals and Defaults as a % of Total Collateral (1)	26.10%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	16.20%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl XXIV | Moody's, A3 Rating | Fitch, BBB Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	1,898,100	'
Fair Value	4,508,000	'
Unrecognized Gains (Losses)	2,609,900	'
Number of Issuers Currently Performing	60	'
Current Deferrals and Defaults as a % of Total Collateral (1)	26.10%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	16.20%	'
Excess Subordination as a % of Performing Collateral (3)	24.90%	'
Pretsl XXII | Moody's, A1 Rating | Fitch, A Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	556,200	'
Fair Value	1,517,100	'
Unrecognized Gains (Losses)	960,900	'
Number of Issuers Currently Performing	71	'
Current Deferrals and Defaults as a % of Total Collateral (1)	19.50%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	12.40%	'
Excess Subordination as a % of Performing Collateral (3)	31.40%	'
Pretsl XXII | Moody's, A1 Rating | Fitch, BBB Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	702,000	'
Fair Value	2,134,600	'
Unrecognized Gains (Losses)	1,432,600	'
Number of Issuers Currently Performing	93	'
Current Deferrals and Defaults as a % of Total Collateral (1)	19.90%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	13.10%	'
Excess Subordination as a % of Performing Collateral (3)	18.30%	'
Trapeza XIII | Moody's, Ca Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	1,930,000	'
Fair Value	3,921,000	'
Unrecognized Gains (Losses)	1,991,000	'
Number of Issuers Currently Performing	48	'
Current Deferrals and Defaults as a % of Total Collateral (1)	18.40%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	10.20%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Trapeza XII | Moody's, C Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	1,782,700	'
Fair Value	3,117,700	'
Unrecognized Gains (Losses)	1,334,900	'
Number of Issuers Currently Performing	33	'
Current Deferrals and Defaults as a % of Total Collateral (1)	24.30%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	11.40%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
US Cap III | Moody's, Ca Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	1,855,100	'
Fair Value	2,789,000	'
Unrecognized Gains (Losses)	933,900	'
Number of Issuers Currently Performing	30	'
Current Deferrals and Defaults as a % of Total Collateral (1)	16.00%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	9.80%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
US Cap II | Moody's, Caa1 Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	1,429,900	'
Fair Value	2,899,000	'
Unrecognized Gains (Losses)	1,469,100	'
Number of Issuers Currently Performing	35	'
Current Deferrals and Defaults as a % of Total Collateral (1)	15.60%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	8.30%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
U S Cap I, B1 Class | Moody's, Caa1 Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	2,733,500	'
Fair Value	5,940,000	'
Unrecognized Gains (Losses)	3,206,500	'
Number of Issuers Currently Performing	30	'
Current Deferrals and Defaults as a % of Total Collateral (1)	12.50%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	7.10%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
U S Cap I, B2 Class | Moody's, Caa1 Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	917,200	'
Fair Value	1,980,000	'
Unrecognized Gains (Losses)	1,062,800	'
Number of Issuers Currently Performing	30	'
Current Deferrals and Defaults as a % of Total Collateral (1)	12.50%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	7.10%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Tpref II | Moody's, Caa3 Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	4,156,500	'
Fair Value	5,324,400	'
Unrecognized Gains (Losses)	1,168,000	'
Number of Issuers Currently Performing	18	'
Current Deferrals and Defaults as a % of Total Collateral (1)	34.80%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	9.90%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Tpref I | Moody's, Ca Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	1,552,400	'
Fair Value	1,931,400	'
Unrecognized Gains (Losses)	379,000	'
Number of Issuers Currently Performing	7	'
Current Deferrals and Defaults as a % of Total Collateral (1)	51.90%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	8.70%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
MMCaps XIX | Moody's, C Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	545,100	'
Fair Value	144,000	'
Unrecognized Gains (Losses)	-401,100	'
Number of Issuers Currently Performing	34	'
Current Deferrals and Defaults as a % of Total Collateral (1)	25.40%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	11.90%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
MMCaps XVII | Moody's, Ca Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	1,647,400	'
Fair Value	2,236,500	'
Unrecognized Gains (Losses)	589,100	'
Number of Issuers Currently Performing	33	'
Current Deferrals and Defaults as a % of Total Collateral (1)	13.00%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	7.40%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
MM Comm III | Moody's, B1 Rating | Fitch, BB Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	156,600	'
Fair Value	3,221,000	'
Unrecognized Gains (Losses)	3,064,500	'
Number of Issuers Currently Performing	5	'
Current Deferrals and Defaults as a % of Total Collateral (1)	30.00%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	9.30%	'
Excess Subordination as a % of Performing Collateral (3)	12.80%	'
Alesco PF VI | Moody's, Ca Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	718,400	'
Fair Value	1,659,700	'
Unrecognized Gains (Losses)	941,300	'
Number of Issuers Currently Performing	44	'
Current Deferrals and Defaults as a % of Total Collateral (1)	7.60%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	12.10%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Alesco PF IV | Moody's, C Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	401,200	'
Fair Value	697,800	'
Unrecognized Gains (Losses)	296,600	'
Number of Issuers Currently Performing	38	'
Current Deferrals and Defaults as a % of Total Collateral (1)	1.20%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	11.00%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Alesco PF III | Moody's, Ca Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	325,300	'
Fair Value	712,800	'
Unrecognized Gains (Losses)	387,500	'
Number of Issuers Currently Performing	31	'
Current Deferrals and Defaults as a % of Total Collateral (1)	11.10%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	9.00%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Alesco PF III, B1 Class | Moody's, Ca Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	813,100	'
Fair Value	1,782,000	'
Unrecognized Gains (Losses)	968,900	'
Number of Issuers Currently Performing	31	'
Current Deferrals and Defaults as a % of Total Collateral (1)	11.10%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	9.00%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Alesco PF II | Moody's, Ca Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	327,000	'
Fair Value	481,700	'
Unrecognized Gains (Losses)	154,600	'
Number of Issuers Currently Performing	30	'
Current Deferrals and Defaults as a % of Total Collateral (1)	11.80%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	8.80%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'
Pretsl X | Moody's, Caa3 Rating | Fitch, C Rating | Corporate Debt Securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Book Value	224,800	'
Fair Value	377,000	'
Unrecognized Gains (Losses)	$152,200	'
Number of Issuers Currently Performing	32	'
Current Deferrals and Defaults as a % of Total Collateral (1)	26.20%	'
Expected Deferrals and Defaults as % of Remaining Collateral (2)	10.60%	'
Excess Subordination as a % of Performing Collateral (3)	0.00%	'

Securities_Amortized_Cost_and_

Securities (Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Schedule of Held-to-maturity Securities [Line Items]	'	'
Carrying value of held to maturity security	$1,514,374,000	$831,819,000
Total, Estimated fair value	1,547,389,000	839,064,000
Debt Securities Other than Securities Pledged	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Due in one year or less, Amortized cost	10,074,000	'
Due after one year through five years, Amortized cost	4,707,000	'
Due after five years through ten years, Amortized cost	0	'
Due after ten years, Amortized cost	37,708,000	'
Carrying value of held to maturity security	52,489,000	'
Due in one year or less, Estimated fair value	10,075,000	'
Due after one year through five years, Estimated fair value	4,704,000	'
Due after five years through ten years, Estimated fair value	0	'
Due after ten years, Estimated fair value	70,634,000	'
Total, Estimated fair value	$85,413,000	'

Securities_Changes_in_Credit_L

Securities (Changes in Credit Loss Component of the Impairment Loss of Debt Securities for Other-than-Temporary Impairment Recognized in Earnings) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'	'	'	'
Balance of credit related OTTI, beginning of period	$110,522	$112,886	$112,235	$114,514
Initial credit impairments	0	0	0	0
Subsequent credit impairments	0	0	0	0
Accretion of credit loss impairment due to an increase in expected cash flows	-853	-814	-2,566	-2,442
Balance of credit related OTTI, end of period	$109,669	$112,072	$109,669	$112,072

Loans_Receivable_Net_Narrative

Loans Receivable, Net (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
			loan		loan
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
PCI loans	$20,580,000	'	$20,580,000	'	$36,047,000
Allowance related to PCI loans	419,000	'	1,300,000	'	'
Outstanding minimum balance of loans that are evaluated for impairment individually	1,000,000	'	1,000,000	'	'
Allowance for loan losses, individually evaluated for impairment	1,867,000	'	1,867,000	'	2,066,000
Residential mortgage loans, appraisal update period, years	'	'	'2 years	'	'
Loans that are 90 days past due and still accruing	0	'	0	'	'
Provision for loan losses	9,000,000	13,750,000	26,000,000	41,250,000	'
Loans, Individually evaluated for impairment	67,062,000	'	67,062,000	'	66,662,000
Allocation of loan losses	1,867,000	'	1,867,000	'	2,066,000
Interest income received and recognized on loans	678,000	508,000	1,900,000	1,600,000	'
Troubled debt restructured, number of loans	'	'	83	'	79
Recorded investment	46,892,000	'	46,892,000	'	51,034,000
Charges-offs for collateral dependent TDRs	'	'	15,163,000	'	22,610,000
Residential Mortgage Loans	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Delinquency period in days	'	'	'90 days	'	'
Substandard Residential	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Delinquency period in days	'	'	'90 days	'	'
Commercial Real Estate, Construction And Multi-Family Loans [Member]	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Delinquency period in days	'	'	'90 days	'	'
Maximum | Special Mention Residential	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Delinquency period in days	'	'	'89 days	'	'
Minimum | Special Mention Residential	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Delinquency period in days	'	'	'30 days	'	'
Collateral Dependant TDRs	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Charges-offs for collateral dependent TDRs	'	383,000	3,000,000	1,600,000	'
Commercial and Industrial Loans	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Allowance for loan losses, individually evaluated for impairment	0	'	0	'	0
Number of current loans classified as non-accrual, TDR	'	'	'	'	1
TDR number of current loans classified as non-accrual, amount	'	'	'	'	506,000
Loans, Individually evaluated for impairment	1,473,000	'	1,473,000	'	1,612,000
Allocation of loan losses	0	'	0	'	0
Charges-offs for collateral dependent TDRs	'	'	2,447,000	'	516,000
Residential Mortgage Loans	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Allowance for loan losses, individually evaluated for impairment	1,867,000	'	1,867,000	'	2,066,000
Number of current loans classified as non-accrual, TDR	'	'	7	'	14
TDR number of current loans classified as non-accrual, amount	1,900,000	'	1,900,000	'	4,600,000
Loans, Individually evaluated for impairment	23,019,000	'	23,019,000	'	20,987,000
Allocation of loan losses	1,867,000	'	1,867,000	'	2,066,000
TDR loans classified as non-accrual, 30-89 days delinquent, amount	3,300,000	'	3,300,000	'	1,600,000
TDR loans classified as non-accrual, 30-89 days delinquent, number of loans	'	'	9	'	5
Charges-offs for collateral dependent TDRs	'	'	5,710,000	'	15,508,000
Residential Mortgage Loans | Maximum	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Delinquency period in days	'	'	'	'	'89 days
Residential Mortgage Loans | Minimum	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Delinquency period in days	'	'	'	'	'30 days
Multi- Family Loans	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Allowance for loan losses, individually evaluated for impairment	0	'	0	'	0
TDR number of current loans classified as non-accrual, amount	'	'	'	'	2,300,000
Loans, Individually evaluated for impairment	3,550,000	'	3,550,000	'	15,313,000
Allocation of loan losses	0	'	0	'	0
TDR loans classified as non-accrual, 30-89 days delinquent, number of loans	'	'	'	'	1
Charges-offs for collateral dependent TDRs	'	'	292,000	'	1,266,000
Residential Loans	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Troubled debt restructured, number of loans	'	'	4	'	'
Recorded investment	'	1,300,000	'	1,300,000	'
Proceeds from sale of loan	'	'	'	14,900,000	'
Commercial Real Estate Loans	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Allowance for loan losses, individually evaluated for impairment	0	'	0	'	0
Number of current loans classified as non-accrual, TDR	'	'	'	'	1
TDR number of current loans classified as non-accrual, amount	'	'	'	'	600,000
Loans, Individually evaluated for impairment	23,477,000	'	23,477,000	'	11,713,000
Allocation of loan losses	0	'	0	'	0
Charges-offs for collateral dependent TDRs	'	'	5,520,000	'	1,101,000
Construction Loans	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Allowance for loan losses, individually evaluated for impairment	0	'	0	'	0
Loans, Individually evaluated for impairment	15,543,000	'	15,543,000	'	17,037,000
Allocation of loan losses	0	'	0	'	0
Charges-offs for collateral dependent TDRs	'	'	505,000	'	3,424,000
Proceeds from sale of loan	'	'	'	8,200,000	'
PCI Loans	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Reclassification of securities available for sale to held to maturity	'	'	1,900,000	'	'
Marathon Banking Corporation and Marathon National Bank of New York | PCI Loans	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
PCI loans	20,600,000	'	20,600,000	'	36,000,000
Upto 90 Days | Marathon Banking Corporation and Marathon National Bank of New York | PCI Loans	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
PCI loans	11,200,000	'	11,200,000	'	19,600,000
More than 90 Days | Marathon Banking Corporation and Marathon National Bank of New York | PCI Loans	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
PCI loans	9,400,000	'	9,400,000	'	16,400,000
Nonperforming Financing Receivable	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Loans transferred	'	'	32,400,000	'	'
Gain on Loan Transactions, Net	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Gain (loss) on sales	$552,000	'	'	'	'

Loans_Receivable_Net_Details

Loans Receivable, Net (Details) (USD $)	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Receivables [Abstract]	'	'	'	'	'	'
Residential mortgage loans	$5,826,301	'	$5,692,810	'	'	'
Multi-family loans	4,715,936	'	3,985,517	'	'	'
Commercial real estate loans	2,802,403	'	2,485,937	'	'	'
Construction loans	154,945	'	194,542	'	'	'
Consumer and other loans	435,246	'	403,929	'	'	'
Commercial and industrial loans	412,879	'	265,836	'	'	'
Total loans excluding PCI loans	14,347,710	'	13,028,571	'	'	'
PCI loans	20,580	'	36,047	'	'	'
Net unamortized premiums and deferred loan costs	-7,883	'	-8,146	'	'	'
Allowance for loan losses	-191,084	-186,070	-173,928	-166,779	-154,467	-142,172
Net loans	$14,169,323	'	$12,882,544	'	'	'

Loans_Receivable_Net_Purchased

Loans Receivable, Net (Purchased Credit Impaired Loans) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 06, 2013	Jan. 10, 2014
In Thousands, unless otherwise specified			PCI Loans	PCI Loans	PCI Loans	PCI Loans	Roma Financial Corporation	Gateway Community Financial Corporation
Schedule of Available-for-sale Securities [Line Items]	'	'	'	'	'	'	'	'
PCI loans, outstanding	$20,580	$36,047	'	'	'	'	'	'
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period [Abstract]	'	'	'	'	'	'	'	'
Contractually required principal and interest	'	'	'	'	'	'	46,231	4,172
Contractual cash flows not expected to be collected (non-accretable difference)	'	'	'	'	'	'	-16,441	-1,024
Expected cash flows to be collected	'	'	'	'	'	'	29,790	3,148
Interest component of expected cash flows (accretable yield)	'	'	'	'	'	'	-3,425	-216
Fair value of acquired loans	'	'	'	'	'	'	26,365	2,932
Accretable Yeild [Roll Forward]	'	'	'	'	'	'	'	'
Balance, beginning of period	'	'	1,401	1,212	4,154	1,457	'	'
Acquisitions	'	'	0	0	216	0	'	'
Accretion (1)	'	'	-193	-135	-3,162	-380	'	'
Net reclassification from non-accretable difference	'	'	0	0	0	0	'	'
Balance, ending of period	'	'	$1,208	$1,077	$1,208	$1,077	'	'

Loans_Receivable_Net_Summary_o

Loans Receivable, Net (Summary of Analysis of the Allowance for Loan Losses) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'	'
Balance at beginning	$186,070	$154,467	$173,928	$142,172
Loans charged off	-8,060	-2,484	-15,163	-19,219
Recoveries	4,074	1,046	6,319	2,576
Net charge-offs	-3,986	-1,438	-8,844	-16,643
Provision for loan losses	9,000	13,750	26,000	41,250
Balance at end	$191,084	$166,779	$191,084	$166,779

Loans_Receivable_Net_Summary_o1

Loans Receivable, Net (Summary of Allowance for Loan Losses and the Recorded Investment in Loans by Portfolio Segment And Based On Impairment Method) (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'
Allowance for loan losses, Beginning balance	$173,928	$142,172
Allowance for loan losses, Charge-offs	-15,163	-22,610
Allowance for loan losses, Recoveries	6,319	3,866
Allowance for loan losses, Provision	26,000	50,500
Allowance for loan losses, Ending balance	191,084	173,928
Allowance for loan losses, individually evaluated for impairment	1,867	2,066
Allowance for loan losses, loans acquired with deteriorated credit quality	0	'
Allowance for loan losses, collectively evaluated for impairment	189,217	171,862
Loans, Individually evaluated for impairment	67,062	66,662
Loans, collectively evaluated for impairment	14,280,648	12,961,909
Loan, Loans acquired with deteriorated credit quality	20,580	36,047
Ending Balance	14,368,290	13,064,618
Residential Mortgage Loans	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'
Allowance for loan losses, Beginning balance	51,760	45,369
Allowance for loan losses, Charge-offs	-5,710	-15,508
Allowance for loan losses, Recoveries	1,255	2,528
Allowance for loan losses, Provision	1,805	19,371
Allowance for loan losses, Ending balance	49,110	51,760
Allowance for loan losses, individually evaluated for impairment	1,867	2,066
Allowance for loan losses, loans acquired with deteriorated credit quality	0	'
Allowance for loan losses, collectively evaluated for impairment	47,243	49,694
Loans, Individually evaluated for impairment	23,019	20,987
Loans, collectively evaluated for impairment	5,803,282	5,671,823
Loan, Loans acquired with deteriorated credit quality	5,093	5,541
Ending Balance	5,831,394	5,698,351
Multi- Family Loans	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'
Allowance for loan losses, Beginning balance	42,103	29,853
Allowance for loan losses, Charge-offs	-292	-1,266
Allowance for loan losses, Recoveries	3,715	219
Allowance for loan losses, Provision	3,389	13,297
Allowance for loan losses, Ending balance	48,915	42,103
Allowance for loan losses, individually evaluated for impairment	0	0
Allowance for loan losses, loans acquired with deteriorated credit quality	0	'
Allowance for loan losses, collectively evaluated for impairment	48,915	42,103
Loans, Individually evaluated for impairment	3,550	15,313
Loans, collectively evaluated for impairment	4,712,386	3,970,204
Loan, Loans acquired with deteriorated credit quality	633	691
Ending Balance	4,716,569	3,986,208
Commercial Real Estate Loans	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'
Allowance for loan losses, Beginning balance	46,657	33,347
Allowance for loan losses, Charge-offs	-5,520	-1,101
Allowance for loan losses, Recoveries	187	65
Allowance for loan losses, Provision	11,437	14,346
Allowance for loan losses, Ending balance	52,761	46,657
Allowance for loan losses, individually evaluated for impairment	0	0
Allowance for loan losses, loans acquired with deteriorated credit quality	0	'
Allowance for loan losses, collectively evaluated for impairment	52,761	46,657
Loans, Individually evaluated for impairment	23,477	11,713
Loans, collectively evaluated for impairment	2,778,926	2,474,224
Loan, Loans acquired with deteriorated credit quality	9,525	19,390
Ending Balance	2,811,928	2,505,327
Construction Loans	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'
Allowance for loan losses, Beginning balance	8,947	16,062
Allowance for loan losses, Charge-offs	-505	-3,424
Allowance for loan losses, Recoveries	782	315
Allowance for loan losses, Provision	-3,516	-4,006
Allowance for loan losses, Ending balance	5,708	8,947
Allowance for loan losses, individually evaluated for impairment	0	0
Allowance for loan losses, loans acquired with deteriorated credit quality	0	'
Allowance for loan losses, collectively evaluated for impairment	5,708	8,947
Loans, Individually evaluated for impairment	15,543	17,037
Loans, collectively evaluated for impairment	139,402	177,505
Loan, Loans acquired with deteriorated credit quality	4,810	7,719
Ending Balance	159,755	202,261
Commercial and Industrial Loans	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'
Allowance for loan losses, Beginning balance	9,273	4,094
Allowance for loan losses, Charge-offs	-2,447	-516
Allowance for loan losses, Recoveries	380	604
Allowance for loan losses, Provision	10,366	5,091
Allowance for loan losses, Ending balance	17,572	9,273
Allowance for loan losses, individually evaluated for impairment	0	0
Allowance for loan losses, loans acquired with deteriorated credit quality	0	'
Allowance for loan losses, collectively evaluated for impairment	17,572	9,273
Loans, Individually evaluated for impairment	1,473	1,612
Loans, collectively evaluated for impairment	411,406	264,224
Loan, Loans acquired with deteriorated credit quality	56	2,586
Ending Balance	412,935	268,422
Consumer and Other Loans	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'
Allowance for loan losses, Beginning balance	2,161	2,086
Allowance for loan losses, Charge-offs	-689	-795
Allowance for loan losses, Recoveries	0	135
Allowance for loan losses, Provision	1,127	735
Allowance for loan losses, Ending balance	2,599	2,161
Allowance for loan losses, individually evaluated for impairment	0	0
Allowance for loan losses, loans acquired with deteriorated credit quality	0	'
Allowance for loan losses, collectively evaluated for impairment	2,599	2,161
Loans, Individually evaluated for impairment	0	0
Loans, collectively evaluated for impairment	435,246	403,929
Loan, Loans acquired with deteriorated credit quality	463	120
Ending Balance	435,709	404,049
Unallocated	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'
Allowance for loan losses, Beginning balance	13,027	11,361
Allowance for loan losses, Charge-offs	0	0
Allowance for loan losses, Recoveries	0	0
Allowance for loan losses, Provision	1,392	1,666
Allowance for loan losses, Ending balance	14,419	13,027
Allowance for loan losses, individually evaluated for impairment	0	0
Allowance for loan losses, loans acquired with deteriorated credit quality	0	'
Allowance for loan losses, collectively evaluated for impairment	14,419	13,027
Loans, Individually evaluated for impairment	0	0
Loans, collectively evaluated for impairment	0	0
Loan, Loans acquired with deteriorated credit quality	0	0
Ending Balance	$0	$0

Loans_Receivable_Net_Schedule_

Loans Receivable, Net (Schedule of Risk Category of Loans by Class of Loans) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	$14,347,710	$13,028,571
Residential Mortgage Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	5,826,301	5,692,810
Multi- Family Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	4,715,936	3,985,517
Commercial Real Estate Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	2,802,403	2,485,937
Construction Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	154,945	194,542
Commercial and Industrial Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	412,879	265,836
Consumer and Other Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	435,246	403,929
Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	14,003,564	12,701,071
Pass [Member] | Residential Mortgage Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	5,698,848	5,584,728
Pass [Member] | Multi- Family Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	4,640,667	3,919,808
Pass [Member] | Commercial Real Estate Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	2,708,011	2,389,086
Pass [Member] | Construction Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	138,013	158,576
Pass [Member] | Commercial and Industrial Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	389,146	247,983
Pass [Member] | Consumer and Other Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	428,879	400,890
Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	137,816	112,642
Special Mention [Member] | Residential Mortgage Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	31,575	23,252
Special Mention [Member] | Multi- Family Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	71,088	49,199
Special Mention [Member] | Commercial Real Estate Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	15,980	23,739
Special Mention [Member] | Construction Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	1,743	7,847
Special Mention [Member] | Commercial and Industrial Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	14,882	7,540
Special Mention [Member] | Consumer and Other Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	2,548	1,065
Substandard [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	206,330	214,858
Substandard [Member] | Residential Mortgage Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	95,878	84,830
Substandard [Member] | Multi- Family Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	4,181	16,510
Substandard [Member] | Commercial Real Estate Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	78,412	73,112
Substandard [Member] | Construction Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	15,189	28,119
Substandard [Member] | Commercial and Industrial Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	8,851	10,313
Substandard [Member] | Consumer and Other Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	3,819	1,974
Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	0	0
Doubtful [Member] | Residential Mortgage Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	0	0
Doubtful [Member] | Multi- Family Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	0	0
Doubtful [Member] | Commercial Real Estate Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	0	0
Doubtful [Member] | Construction Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	0	0
Doubtful [Member] | Commercial and Industrial Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	0	0
Doubtful [Member] | Consumer and Other Loans	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Risk category of loans	$0	$0

Loans_Receivable_Net_Payment_S

Loans Receivable, Net (Payment Status of the Recorded Investment in Past Due Loans) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days	$67,702	$42,637
60-89 Days	28,305	18,805
Greater than 90 Days	110,829	90,687
Total Past Due	206,836	152,129
Current	14,140,874	12,876,442
Total Loans Receivable	14,347,710	13,028,571
Residential Mortgage Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days	22,485	17,779
60-89 Days	12,362	7,358
Greater than 90 Days	76,868	66,079
Total Past Due	111,715	91,216
Current	5,714,586	5,601,594
Total Loans Receivable	5,826,301	5,692,810
Multi- Family Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days	35,728	1,408
60-89 Days	13,010	218
Greater than 90 Days	1,874	3,588
Total Past Due	50,612	5,214
Current	4,665,324	3,980,303
Total Loans Receivable	4,715,936	3,985,517
Commercial Real Estate Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days	5,259	16,380
60-89 Days	428	10,247
Greater than 90 Days	14,645	2,091
Total Past Due	20,332	28,718
Current	2,782,071	2,457,219
Total Loans Receivable	2,802,403	2,485,937
Construction Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days	180	302
60-89 Days	1,326	527
Greater than 90 Days	12,805	16,181
Total Past Due	14,311	17,010
Current	140,634	177,532
Total Loans Receivable	154,945	194,542
Commercial and Industrial Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days	2,178	5,871
60-89 Days	503	287
Greater than 90 Days	819	775
Total Past Due	3,500	6,933
Current	409,379	258,903
Total Loans Receivable	412,879	265,836
Consumer and Other Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days	1,872	897
60-89 Days	676	168
Greater than 90 Days	3,818	1,973
Total Past Due	6,366	3,038
Current	428,880	400,891
Total Loans Receivable	$435,246	$403,929

Loans_Receivable_Net_NonAccrua

Loans Receivable, Net (Non-Accrual Loans Status) (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
	loan	loan
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual: # of loans	423	343
Non-accrual, Amount	$116,032	$100,360
Residential And Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual: # of loans	383	304
Non-accrual, Amount	85,888	74,282
Construction Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual: # of loans	6	18
Non-accrual, Amount	12,806	16,181
Multi- Family Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual: # of loans	1	5
Non-accrual, Amount	1,874	5,905
Commercial Real Estate Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual: # of loans	29	12
Non-accrual, Amount	14,645	2,711
Commercial and Industrial Loans	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Non-accrual: # of loans	4	4
Non-accrual, Amount	$819	$1,281

Loans_Receivable_Net_Loans_Ind

Loans Receivable, Net (Loans Individually Evaluated for Impairment by Class of Loans) (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Recorded Investment	'	'
Total	$67,062	$66,662
Unpaid Principal Balance	'	'
Total	80,101	92,222
Related Allowance	1,867	2,066
Average Recorded Investment	'	'
Total	63,642	66,800
Interest Income Recognized	'	'
Total	1,885	2,353
Residential Mortgage Loans	'	'
Recorded Investment	'	'
With no related allowance	6,578	3,924
With an allowance recorded	16,441	17,063
Total	23,019	20,987
Unpaid Principal Balance	'	'
With no related allowance	8,946	5,607
With an allowance recorded	16,792	17,457
Total	25,738	23,064
Related Allowance	1,867	2,066
Average Recorded Investment	'	'
With no related allowance	5,898	3,330
With an allowance recorded	16,680	15,880
Total	22,578	19,210
Interest Income Recognized	'	'
With no related allowance	318	190
With an allowance recorded	381	753
Total	699	943
Multi- Family Loans	'	'
Recorded Investment	'	'
With no related allowance	3,550	15,313
With an allowance recorded	0	0
Total	3,550	15,313
Unpaid Principal Balance	'	'
With no related allowance	7,298	28,681
With an allowance recorded	0	0
Total	7,298	28,681
Related Allowance	0	0
Average Recorded Investment	'	'
With no related allowance	7,547	15,405
With an allowance recorded	0	0
Total	7,547	15,405
Interest Income Recognized	'	'
With no related allowance	99	428
With an allowance recorded	0	0
Total	99	428
Commercial Real Estate Loans	'	'
Recorded Investment	'	'
With no related allowance	23,477	11,713
With an allowance recorded	0	0
Total	23,477	11,713
Unpaid Principal Balance	'	'
With no related allowance	28,855	12,223
With an allowance recorded	0	0
Total	28,855	12,223
Related Allowance	0	0
Average Recorded Investment	'	'
With no related allowance	15,788	11,538
With an allowance recorded	0	0
Total	15,788	11,538
Interest Income Recognized	'	'
With no related allowance	695	679
With an allowance recorded	0	0
Total	695	679
Construction Loans	'	'
Recorded Investment	'	'
With no related allowance	15,543	17,037
With an allowance recorded	0	0
Total	15,543	17,037
Unpaid Principal Balance	'	'
With no related allowance	16,737	26,642
With an allowance recorded	0	0
Total	16,737	26,642
Related Allowance	0	0
Average Recorded Investment	'	'
With no related allowance	16,169	19,157
With an allowance recorded	0	0
Total	16,169	19,157
Interest Income Recognized	'	'
With no related allowance	326	198
With an allowance recorded	0	0
Total	326	198
Commercial and Industrial Loans	'	'
Recorded Investment	'	'
With no related allowance	1,473	1,612
With an allowance recorded	0	0
Total	1,473	1,612
Unpaid Principal Balance	'	'
With no related allowance	1,473	1,612
With an allowance recorded	0	0
Total	1,473	1,612
Related Allowance	0	0
Average Recorded Investment	'	'
With no related allowance	1,560	1,490
With an allowance recorded	0	0
Total	1,560	1,490
Interest Income Recognized	'	'
With no related allowance	66	105
With an allowance recorded	0	0
Total	$66	$105

Loans_Receivable_Net_Troubled_

Loans Receivable, Net (Troubled Debt Restructured Loans) (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
	loan	loan
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts, still accruing	55	50
Recorded investment, still accruing	$35,231	$39,570
Number of contracts, non-accrual	28	29
Recorded investment, non-accrual	11,661	11,464
Troubled debt restructured, number of loans	83	79
Troubled debt restructuring, amount	46,892	51,034
Residential Mortgage Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts, still accruing	41	35
Recorded investment, still accruing	14,578	12,975
Number of contracts, non-accrual	27	26
Recorded investment, non-accrual	8,453	8,021
Troubled debt restructured, number of loans	68	61
Troubled debt restructuring, amount	23,031	20,996
Multi- Family Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts, still accruing	2	4
Recorded investment, still accruing	1,677	9,844
Number of contracts, non-accrual	0	1
Recorded investment, non-accrual	0	2,317
Troubled debt restructured, number of loans	2	5
Troubled debt restructuring, amount	1,677	12,161
Commercial Real Estate Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts, still accruing	8	7
Recorded investment, still accruing	14,445	11,093
Number of contracts, non-accrual	1	1
Recorded investment, non-accrual	3,208	620
Troubled debt restructured, number of loans	9	8
Troubled debt restructuring, amount	17,653	11,713
Commercial and Industrial Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts, still accruing	2	1
Recorded investment, still accruing	1,473	1,106
Number of contracts, non-accrual	0	1
Recorded investment, non-accrual	0	506
Troubled debt restructured, number of loans	2	2
Troubled debt restructuring, amount	1,473	1,612
Construction Loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of contracts, still accruing	2	3
Recorded investment, still accruing	3,058	4,552
Number of contracts, non-accrual	0	0
Recorded investment, non-accrual	0	0
Troubled debt restructured, number of loans	2	3
Troubled debt restructuring, amount	$3,058	$4,552

Loans_Receivable_Net_Schedule_1

Loans Receivable, Net (Schedule Of Troubled Debt Restructurings) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
	loan	loan	loan	loan
Residential Mortgage Loans	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	9	8	20
Pre-modification Recorded Investment	$0	$3,225	$2,546	$8,723
Post- modification Recorded Investment	0	2,842	2,546	8,155
Number of Loans	0	9,000	8	20
Pre-modification Interest Yield	0.00%	4.44%	5.18%	5.03%
Post- modification Interest Yield	0.00%	3.14%	3.57%	3.33%
Multi- Family Loans	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	'	'	0	3
Pre-modification Recorded Investment	'	'	0	18,037
Post- modification Recorded Investment	'	'	0	10,420
Number of Loans	'	'	0	3
Pre-modification Interest Yield	'	'	0.00%	861.00%
Post- modification Interest Yield	'	'	0.00%	381.00%
Commercial Real Estate Loans	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	2	0	3	4
Pre-modification Recorded Investment	9,549	0	10,657	5,080
Post- modification Recorded Investment	6,549	0	7,657	4,679
Number of Loans	2,000	0	3	4
Pre-modification Interest Yield	642.00%	0.00%	659.00%	729.00%
Post- modification Interest Yield	549.00%	0.00%	575.00%	541.00%
Construction Loans	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	'	'	0	1
Pre-modification Recorded Investment	'	'	0	2,640
Post- modification Recorded Investment	'	'	0	2,640
Number of Loans	'	'	0	1
Pre-modification Interest Yield	'	'	0.00%	500.00%
Post- modification Interest Yield	'	'	0.00%	375.00%
Commercial and Industrial Loans	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	1	0	1
Pre-modification Recorded Investment	0	521	0	521
Post- modification Recorded Investment	$0	$521	$0	$521
Number of Loans	0	1,000	0	1
Pre-modification Interest Yield	0.00%	600.00%	0.00%	600.00%
Post- modification Interest Yield	0.00%	400.00%	0.00%	400.00%

Deposits_Summary_of_Deposits_D

Deposits (Summary of Deposits) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Banking and Thrift [Abstract]	'	'
Savings, Amount	$2,200,315	$2,212,034
Checking account, Amount	3,750,306	3,163,250
Money market deposits, Amount	2,443,289	1,958,982
Total transaction accounts, Amount	8,393,910	7,334,266
Certificates of deposit, Amount	3,077,688	3,384,545
Total Deposit, Amount	$11,471,598	$10,718,811

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets Summary of Other Intangible Assets(Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Intangible Asset	$48,852	$49,580
Accumulated Amortization	-18,568	-17,941
Valuation Allowance	-81	-81
Net Intangible Assets	30,203	31,558
Mortgage Servicing Rights	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Intangible Asset	23,494	26,075
Accumulated Amortization	-9,008	-11,292
Valuation Allowance	-81	-81
Net Intangible Assets	14,405	14,702
Core Deposit Premium	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Intangible Asset	25,058	23,205
Accumulated Amortization	-9,457	-6,569
Valuation Allowance	0	0
Net Intangible Assets	15,601	16,636
Other	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Intangible Asset	300	300
Accumulated Amortization	-103	-80
Valuation Allowance	0	0
Net Intangible Assets	$197	$220

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets Narrative (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]	'	'
Goodwill	$77,600,000	$77,600,000
Loans sold	1,610,000,000	1,710,000,000
Estimated fair value of servicing asset in intangible assets	14,400,000	14,700,000
Weighted average discount rate of servicing assets	10.18%	'
Weighted average constant prepayment rate on mortgages	9.54%	'
Weighted average life of servicing assets, years	'7 years 2 months 4 days	'
Core Deposit Premium	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Useful life	'10 years	'
Core Deposit Premium | Gateway Community Financial Corporation	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangibles acquired	$1,900,000	'

Equity_Incentive_Plan_Stock_Co

Equity Incentive Plan (Stock Compensation) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'	'	'	'
Stock option expense	$11	$109	$1,775	$278
Restricted stock expense	0	786	11,922	2,400
Share-based compensation expense	$11	$895	$13,697	$2,678

Summary_of_Stock_Option_Activi

(Summary of Stock Option Activity and Related Information) (Details) (USD $)	3 Months Ended	9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'	'
Number of Stock Options, Outstanding Beginning Balance	'	11,299,351
Number of Stock Options, Granted	'	144,177
Number of Stock Options, Exercised	'	-2,047,889
Number of Stock Options, Forfeited	'	-3,060
Number of Stock Options, Expired	'	-44,648
Number of Stock Options, Outstanding Ending Balance	9,347,931	9,347,931
Number of Stock Options, Exercisable Ending Balance	9,319,213	9,319,213
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]	'	'
Weighted Average Exercise Price, Outstanding Beginning Balance	'	$5.99
Weighted Average Exercise Price, Granted	'	$10.29
Weighted Average Exercise Price, Exercised	'	$6
Weighted Average Exercise Price, Forfeited	'	$8.69
Weighted Average Exercise Price, Expired	'	$5.74
Weighted Average Exercise Price, Outstanding Ending Balance	$6.06	$6.06
Weighted Average Exercise Price, Exercisable Ending Balance	$6.04	$6.04
Outstanding, Weighted Average Remaining Contractual Life	'3 years 8 months 20 days	'3 years 0 months 0 days
Weighted Average Remaining Contractual Life, Exercisable Ending Balance	'	'3 years 0 months 0 days
Aggregate Intrinsic Value, Outstanding Beginning Balance	'	$45,652
Aggregate Intrinsic Value, Outstanding Ending Balance	38,108	38,108
Aggregate Intrinsic Value, Exercisable at Ending Balance	$38,108	$38,108

Equity_Incentive_Plan_Narrativ

Equity Incentive Plan (Narrative) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Future expense of non vested option outstanding	$94
Expected future compensation expense relating to unvested restricted shares	'6 years 1 month 20 days

Summary_of_NonVested_Options_a

(Summary of Non-Vested Options and Restricted Shares) (Details) (Restricted Stock, USD $)	9 Months Ended
	Sep. 30, 2014
Restricted Stock	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number of Shares Awarded, Non-vested Beginning Balance	2,655,585
Number of Shares Awarded, Granted	38,250
Number of Shares Awarded, Vested	-2,685,457
Number of Shares, Awarded, Forfeited	-8,378
Number of Shares Awarded, Non-vested Ending Balance	0
Weighted Average Grant Date Fair Value, Non-vested Beginning Balance	$5.37
Weighted Average Grant Date Fair Value, Granted	$10.19
Weighted Average Grant Date Fair Value, Vested	$5.44
Weighted Average Grant Date Fair Value, Forfeited	$5.08
Weighted Average Grant Date Fair Value, Non-vested Ending Balance	$0

Net_Periodic_Benefit_Plan_Expe2

Net Periodic Benefit Plan Expense (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]	'	'	'	'
Service cost	$580,000	$450,000	$1,740,000	$1,349,000
Interest cost	331,000	227,000	992,000	681,000
Expected return on plan assets	0	0	0	0
Prior service cost	24,000	24,000	73,000	73,000
Net gain	158,000	165,000	474,000	495,000
Total net periodic benefit cost	1,093,000	866,000	3,279,000	2,598,000
Contributions by employer	'	'	$2,800,000	'

Comprehensive_Income_Loss_Comp

Comprehensive Income (Loss) (Components of Comprehensive Income (Loss), Gross and Net Of Tax) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Equity [Abstract]	'	'	'	'
Net income, Gross	$62,133	$45,334	$141,848	$131,190
Net income, Tax	-23,092	-16,053	-53,204	-46,666
Net income	39,041	29,281	88,644	84,524
Change in funded status of retirement obligations, Gross	182	239	547	717
Change in funded status of retirement obligations, Tax	-73	-98	-220	-293
Change in funded status of retirement obligations	109	141	327	424
Unrealized gain on securities available-for-sale, Gross	-3,973	185	5,874	-18,051
Unrealized gain on securities available-for-sale, Tax	1,644	-33	-2,319	7,437
Unrealized gain on securities available-for-sale	-2,329	152	3,555	-10,614
Net loss on securities reclassified from available-for- sale to held-to-maturity, Gross	'	'	0	-12,243
Net loss on securities reclassified from available-for- sale to held-to-maturity, Tax	'	'	0	5,001
Net loss on securities reclassified from available-for- sale to held-to-maturity	0	0	0	-7,242
Accretion of loss on securities reclassified to held to maturity, Gross	745	849	2,215	849
Accretion of loss on securities reclassified to held to maturity, Tax	-304	-347	-905	-347
Accretion of loss on securities reclassified to held to maturity	441	502	1,310	502
Reclassification adjustments for losses included in net income, Gross	'	'	-233	-684
Reclassification adjustments for losses included in net income, Tax	'	'	95	279
Reclassification adjustment for losses Included in net income	0	0	-138	-405
Other-than-temporary impairment accretion on debt securities, Gross	336	1,084	1,007	1,745
Other-than-temporary impairment accretion on debt securities, Tax	-137	-443	-411	-713
Other-than-temporary impairment accretion on debt securities	199	641	596	1,032
Total other comprehensive income (loss), Gross	-2,710	2,357	9,410	-27,667
Total other comprehensive income (loss), Tax	1,130	-921	-3,760	11,364
Total other comprehensive income (loss)	-1,580	1,436	5,650	-16,303
Total comprehensive income, Gross	59,423	47,691	151,258	103,523
Total comprehensive income, Tax	-21,962	-16,974	-56,964	-35,302
Total comprehensive income	$37,461	$30,717	$94,294	$68,221

Comprehensive_Income_Loss_Comp1

Comprehensive Income (Loss) (Component of Accumulated Other Comprehensive Loss) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'	'	'	'
Total accumulated other comprehensive loss, Beginning Balance	'	'	($25,696)	($7,607)
Total accumulated other comprehensive loss, Net change	-1,580	1,436	5,650	-16,303
Total accumulated other comprehensive loss, Ending Balance	-20,046	-23,910	-20,046	-23,910
Change in funded status of retirement obligations	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'	'	'	'
Total accumulated other comprehensive loss, Beginning Balance	'	'	-5,869	-5,879
Total accumulated other comprehensive loss, Net change	'	'	327	424
Total accumulated other comprehensive loss, Ending Balance	-5,542	-5,455	-5,542	-5,455
Net unrealized gains (losses) on investment securities	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'	'	'	'
Total accumulated other comprehensive loss, Beginning Balance	'	'	-19,827	-1,728
Total accumulated other comprehensive loss, Net change	'	'	5,323	-16,727
Total accumulated other comprehensive loss, Ending Balance	($14,504)	($18,455)	($14,504)	($18,455)

Comprehensive_Income_Loss_Recl

Comprehensive Income (Loss) (Reclassification Adjustment) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Compensation and fringe benefits	($40,137)	($31,592)	($133,166)	($90,472)
Income tax expense (benefit)	-23,092	-16,053	-53,204	-46,666
Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Total before tax	182	239	314	34
Income tax expense (benefit)	-73	-98	-131	-14
Net of tax	109	141	183	20
Unrealized gain on securities available-for-sale | Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Gain on security transactions	0	0	-233	-684
Accumulated Defined Benefit Plans Adjustment | Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Amortization of net obligation or asset	6	8	19	25
Amortization of prior service cost	31	37	93	110
Amortization of net gain	145	194	435	583
Compensation and fringe benefits	$182	$239	$547	$718

Fair_Value_Measurements_Narrat

Fair Value Measurements (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014
Mortgage Servicing Rights	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Discount rate	10.18%
Mortgage Servicing Rights | Maximum	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Prepayment range	29.40%
Mortgage Servicing Rights | Minimum	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Prepayment range	6.00%
Loans Receivable	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Outstanding minimum balance of loans to be evaluated for impairment individually	1,000,000
Loans Receivable | Maximum	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Discount rate	25.00%
Loans Receivable | Minimum	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Discount rate	0.00%
Other Real Estate Owned | Maximum	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Discount rate	25.00%
Other Real Estate Owned | Minimum	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Discount rate	0.00%

Fair_Value_Measurements_Carryi

Fair Value Measurements (Carrying Value of Our Assets Measured at Fair Value on a Recurring Basis) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	$1,045,962	$785,032
Equity Securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	8,391	8,444
US Government-sponsored Enterprises Debt Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	'	3,004
Corporate and other debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	'	670
Mortgage-backed securities:	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	1,037,571	772,914
Federal Home Loan Mortgage Corporation	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	448,327	363,088
Federal National Mortgage Association	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	589,103	409,559
Government National Mortgage Association	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	141	267
Fair Value, Measurements, Recurring	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	1,045,962	785,032
Fair Value, Measurements, Recurring | Equity Securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	8,391	8,444
Fair Value, Measurements, Recurring | US Government-sponsored Enterprises Debt Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	'	3,004
Fair Value, Measurements, Recurring | Corporate and other debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	'	670
Fair Value, Measurements, Recurring | Mortgage-backed securities:	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	1,037,571	772,914
Fair Value, Measurements, Recurring | Federal Home Loan Mortgage Corporation	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	448,327	363,088
Fair Value, Measurements, Recurring | Federal National Mortgage Association	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	589,103	409,559
Fair Value, Measurements, Recurring | Government National Mortgage Association	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	141	267
Level 1 | Fair Value, Measurements, Recurring	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	0	0
Level 1 | Fair Value, Measurements, Recurring | Equity Securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	0	0
Level 1 | Fair Value, Measurements, Recurring | US Government-sponsored Enterprises Debt Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	'	0
Level 1 | Fair Value, Measurements, Recurring | Mortgage-backed securities:	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	0	0
Level 1 | Fair Value, Measurements, Recurring | Federal Home Loan Mortgage Corporation	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	0	0
Level 1 | Fair Value, Measurements, Recurring | Federal National Mortgage Association	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	0	0
Level 1 | Fair Value, Measurements, Recurring | Government National Mortgage Association	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	0	0
Level 2 | Fair Value, Measurements, Recurring	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	1,045,962	784,362
Level 2 | Fair Value, Measurements, Recurring | Equity Securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	8,391	8,444
Level 2 | Fair Value, Measurements, Recurring | US Government-sponsored Enterprises Debt Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	'	3,004
Level 2 | Fair Value, Measurements, Recurring | Mortgage-backed securities:	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	1,037,571	772,914
Level 2 | Fair Value, Measurements, Recurring | Federal Home Loan Mortgage Corporation	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	448,327	363,088
Level 2 | Fair Value, Measurements, Recurring | Federal National Mortgage Association	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	589,103	409,559
Level 2 | Fair Value, Measurements, Recurring | Government National Mortgage Association	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	141	267
Level 3 | Fair Value, Measurements, Recurring	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	0	670
Level 3 | Fair Value, Measurements, Recurring | Equity Securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	0	0
Level 3 | Fair Value, Measurements, Recurring | US Government-sponsored Enterprises Debt Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	'	0
Level 3 | Fair Value, Measurements, Recurring | Corporate and other debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	'	670
Level 3 | Fair Value, Measurements, Recurring | Mortgage-backed securities:	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	0	0
Level 3 | Fair Value, Measurements, Recurring | Federal Home Loan Mortgage Corporation	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	0	0
Level 3 | Fair Value, Measurements, Recurring | Federal National Mortgage Association	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	0	0
Level 3 | Fair Value, Measurements, Recurring | Government National Mortgage Association	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Estimated fair value	$0	$0

Fair_Value_Measurements_Change

Fair Value Measurements (Changes in Level 3 Assets Measured at Fair Value on Recurring Basis) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'	'
Beginning balance	$670	$0
Transfers from held-to-maturity	0	0
Net income	470	0
Other comprehensive income (loss)	-229	0
Sales	-911	0
Settlements	0	0
Ending balance	$0	$0

Fair_Value_Measurements_Carryi1

Fair Value Measurements (Carrying Value of Our Assets Measured at Fair Value on a Non-Recurring Basis) (Details) (USD $)

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

In Thousands, unless otherwise specified

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Other Real Estate Owned

Other Real Estate Owned

Other Real Estate Owned

Other Real Estate Owned

Other Real Estate Owned

Other Real Estate Owned

Level 1

Level 1

Level 2

Level 2

Level 3

Level 3

Minimum

Minimum

Maximum

Maximum

Weighted Average

Weighted Average

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other real estate owned

$684

$929

$0

$0

$0

$0

$684

$929

'

'

'

'

'

'

Total

$684

$929

$0

$0

$0

$0

$684

$929

'

'

'

'

'

'

Fair Value Inputs [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Lack of marketability, range

'

'

'

'

'

'

'

'

0.00%

0.00%

25.00%

25.00%

15.55%

2.42%

Fair_Value_Measurements_Carryi2

Fair Value Measurements (Carrying Amounts and Estimated Fair Values) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Estimated fair value	$1,045,962,000	$785,032,000
Held-to-maturity securities, estimated fair value	1,547,389,000	839,064,000
Carrying value [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cash and cash equivalents	238,166,000	250,689,000
Estimated fair value	1,045,962,000	785,032,000
Held-to-maturity securities, estimated fair value	1,514,374,000	831,819,000
Stock in FHLB	140,990,000	178,126,000
Loans held for sale	6,986,000	8,273,000
Net loans	14,169,323,000	12,882,544,000
Deposits, other than time deposits	8,393,910,000	7,334,266,000
Time deposits	3,077,688,000	3,384,545,000
Borrowed funds	2,536,594,000	3,367,274,000
Estimated fair value [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cash and cash equivalents	238,166,000	250,689,000
Estimated fair value	1,045,962,000	785,032,000
Held-to-maturity securities, estimated fair value	1,547,389,000	839,064,000
Stock in FHLB	140,990,000	178,126,000
Loans held for sale	6,986,000	8,273,000
Net loans	14,015,727,000	12,598,551,000
Deposits, other than time deposits	8,393,910,000	7,334,266,000
Time deposits	3,089,598,000	3,410,202,000
Borrowed funds	2,563,294,000	3,337,419,000
Level 1 | Estimated fair value [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cash and cash equivalents	238,166,000	250,689,000
Estimated fair value	0	0
Held-to-maturity securities, estimated fair value	0	0
Stock in FHLB	140,990,000	178,126,000
Loans held for sale	0	0
Net loans	0	0
Deposits, other than time deposits	8,393,910,000	7,334,266,000
Time deposits	0	0
Borrowed funds	0	0
Level 2 | Estimated fair value [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cash and cash equivalents	0	0
Estimated fair value	1,045,962,000	784,362,000
Held-to-maturity securities, estimated fair value	1,482,702,000	790,460,000
Stock in FHLB	0	0
Loans held for sale	6,986,000	8,273,000
Net loans	0	0
Deposits, other than time deposits	0	0
Time deposits	3,089,598,000	3,410,202,000
Borrowed funds	2,563,294,000	3,337,419,000
Level 3 | Estimated fair value [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cash and cash equivalents	0	0
Estimated fair value	0	670,000
Held-to-maturity securities, estimated fair value	64,687,000	48,604,000
Stock in FHLB	0	0
Loans held for sale	0	0
Net loans	14,015,727,000	12,598,551,000
Deposits, other than time deposits	0	0
Time deposits	0	0
Borrowed funds	$0	$0

Subsequent_Event_Details

Subsequent Event (Details) (Subsequent Event, USD $)	120 Months Ended
	Oct. 31, 2014
Subsequent Event	'
Subsequent Event [Line Items]	'
Dividends declared per share (usd per share)	$0.04