Northfield Bancorp, Inc. (NFBK) 10-Q 9 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 31, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	Northfield Bancorp, Inc.
Entity Central Index Key	1,493,225
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		49,492,931

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS:
Cash and due from banks	$ 13,538	$ 17,446
Interest-bearing deposits in other financial institutions	45,195	40,393
Total cash and cash equivalents	58,733	57,839
Trading securities	10,167	9,597
Debt securities available-for-sale, at estimated fair value	625,279	513,782
Debt securities held-to-maturity, at amortized cost	9,819	9,931
Equity securities	1,301	1,339
Originated loans held-for-investment, net	2,547,920	2,425,275
Loans acquired	650,875	692,803
Purchased credit-impaired (“PCI”) loans held-for-investment	21,331	22,741
Loans held-for-investment, net	3,220,126	3,140,819
Allowance for loan losses	(26,882)	(26,160)
Net loans held-for-investment	3,193,244	3,114,659
Accrued interest receivable	11,413	10,713
Bank owned life insurance	152,298	150,604
Federal Home Loan Bank of New York stock, at cost	27,718	25,046
Premises and equipment, net	25,058	25,746
Goodwill	38,411	38,411
Other real estate owned	850	850
Other assets	33,867	32,900
Total assets	4,188,158	3,991,417
LIABILITIES:
Deposits	2,967,281	2,836,979
Borrowed funds	524,335	471,549
Advance payments by borrowers for taxes and insurance	18,009	14,798
Accrued expenses and other liabilities	28,878	29,214
Total liabilities	3,538,503	3,352,540
STOCKHOLDERS’ EQUITY:
Preferred stock, $0.01 par value; 25,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $0.01 par value: 150,000,000 shares authorized, 60,933,707 shares issued at June 30, 2018 and December 31, 2017, 49,481,589 and 48,803,885 outstanding at June 30, 2018, and December 31, 2017, respectively	609	609
Additional paid-in-capital	544,404	548,864
Unallocated common stock held by employee stock ownership plan	(21,737)	(22,244)
Retained earnings	292,900	281,138
Accumulated other comprehensive loss	(11,648)	(5,451)
Treasury stock at cost; 11,452,118 and 12,129,822 shares at June 30, 2018, and December 31, 2017, respectively	(154,873)	(164,039)
Total stockholders’ equity	649,655	638,877
Total liabilities and stockholders’ equity	$ 4,188,158	$ 3,991,417

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Estimated Fair Value	$ 9,529	$ 9,892
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)	25,000,000	25,000,000
Preferred stock, shares issued (shares)	0	0
Preferred stock, shares outstanding (shares)	0	0
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	150,000,000	150,000,000
Common stock, shares issued (shares)	60,933,707	60,933,707
Common stock, shares outstanding (shares)	49,481,589	48,803,885
Treasury stock, shares (shares)	11,452,118	12,129,822

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income:
Loans	$ 31,456	$ 29,653	$ 62,243	$ 58,661
Mortgage-backed securities	3,068	2,260	5,794	4,616
Other securities	821	283	1,323	535
Federal Home Loan Bank of New York dividends	398	325	812	696
Deposits in other financial institutions	192	139	445	221
Total interest income	35,935	32,660	70,617	64,729
Interest expense:
Deposits	6,050	3,899	11,261	7,519
Borrowings	2,115	1,852	4,042	3,624
Total interest expense	8,165	5,751	15,303	11,143
Net interest income	27,770	26,909	55,314	53,586
Provision for loan losses	670	511	704	883
Net interest income after provision for loan losses	27,100	26,398	54,610	52,703
Non-interest income:
Fees and service charges for customer services	1,147	1,107	2,361	2,325
Income on bank owned life insurance	914	1,010	1,868	3,468
Gains on securities transactions, net	313	256	473	664
Other	71	64	147	127
Total non-interest income	2,445	2,437	4,849	6,584
Non-interest expense:
Compensation and employee benefits	9,121	9,774	18,238	19,746
Occupancy	2,950	2,696	6,046	5,653
Furniture and equipment	252	287	508	592
Data processing	1,150	1,120	2,374	2,281
Professional fees	909	595	1,672	1,465
FDIC insurance	274	258	571	516
Other	2,384	1,888	4,757	3,909
Total non-interest expense	17,040	16,618	34,166	34,162
Income before income tax expense	12,505	12,217	25,293	25,125
Income tax expense	1,893	3,807	4,237	6,767
Net income	$ 10,612	$ 8,410	$ 21,056	$ 18,358
Net income per common share:
Basic (usd per share)	$ 0.23	$ 0.19	$ 0.46	$ 0.41
Diluted (usd per share)	$ 0.23	$ 0.18	$ 0.45	$ 0.39
Unrealized (losses) gains on securities:
Net unrealized holding (losses) gains on securities	$ (2,290)	$ 2,107	$ (8,443)	$ 3,086
Less: reclassification adjustment for net (gains) losses included in net income (included in gains on securities transactions, net)	(116)	4	(171)	4
Net unrealized (losses) gains	(2,406)	2,111	(8,614)	3,090
Amortization related to post retirement benefit obligation	0	27	0	54
Other comprehensive (loss) income, before tax	(2,406)	2,138	(8,614)	3,144
Income tax benefit (expense) related to net unrealized holding (losses) gains on securities	640	(844)	2,369	(1,235)
Income tax benefit (expense) related to reclassification adjustment for (losses) gains included in net income	33	(2)	48	(2)
Income tax expense related to post retirement benefit adjustment	0	(11)	0	(22)
Other comprehensive (loss) income, net of tax	(1,733)	1,281	(6,197)	1,885
Comprehensive income	$ 8,879	$ 9,691	$ 14,859	$ 20,243

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Unallocated Common Stock Held by the Employee Stock Ownership Plan	Retained Earnings	Accumulated Other Comprehensive Income (loss) Net of tax	Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of change in accounting principle - adoption of ASU No. 2016-09	$ 0		$ (2,898)		$ 2,898
Beginning Balance (shares) at Dec. 31, 2016		48,526,658
Beginning Balance at Dec. 31, 2016	621,196	$ 609	547,910	$ (23,466)	268,226	$ (4,332)	$ (167,751)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	18,358				18,358
Other comprehensive income, net of tax	1,885					1,885
ESOP shares allocated or committed to be released	1,119		608	511
Stock compensation expense	3,217		3,217
Forfeitures of restricted stock (shares)		(3,600)
Forfeitures of restricted stock	0		47				(47)
Exercise of stock options, net (shares)		333,738
Exercise of stock options, net	92		(4,422)				4,514
Cash dividends declared	(7,348)				(7,348)
Ending Balance at Jun. 30, 2017	638,519	$ 609	544,462	(22,955)	282,134	(2,447)	(163,284)
Ending Balance (shares) at Jun. 30, 2017		48,856,796
Beginning Balance (shares) at Dec. 31, 2017		48,803,885
Beginning Balance at Dec. 31, 2017	638,877	$ 609	548,864	(22,244)	281,138	(5,451)	(164,039)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	21,056				21,056
Other comprehensive income, net of tax	(6,197)					(6,197)
ESOP shares allocated or committed to be released	1,005		498	507
Stock compensation expense	2,717		2,717
Forfeitures of restricted stock (shares)		(1,760)
Forfeitures of restricted stock	$ 0		23				(23)
Exercise of stock options, net (shares)	1,105,157	679,464
Exercise of stock options, net	$ 1,491		(7,698)				9,189
Cash dividends declared	(9,294)				(9,294)
Ending Balance at Jun. 30, 2018	$ 649,655	$ 609	$ 544,404	$ (21,737)	$ 292,900	$ (11,648)	$ (154,873)
Ending Balance (shares) at Jun. 30, 2018		49,481,589

Consolidated Statements Of Cha6

Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Statement of Stockholders' Equity [Abstract]
Dividends declared per share (usd per share)	$ 0.20	$ 0.16
Dividends paid per share (USD per share)	$ 0.20	$ 0.16

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 21,056	$ 18,358
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	704	883
ESOP and stock compensation expense	3,722	4,336
Depreciation	1,529	1,661
Amortization of premiums, and deferred loan costs, net of (accretion) of discounts, and deferred loan fees	1,223	994
Amortization of intangible assets	166	196
Income on bank owned life insurance	(1,868)	(3,468)
Gains on securities transactions, net	(473)	(664)
Net purchases of trading securities	(268)	(283)
Increase in accrued interest receivable	(700)	(52)
Decrease in other assets	1,283	1,247
Decrease in accrued expenses and other liabilities	(336)	(3,113)
Net cash provided by operating activities	26,038	20,095
Cash flows from investing activities:
Net increase in loans receivable	(42,409)	(82,339)
Purchase of loans	(37,593)	0
Purchases of Federal Home Loan Bank of New York stock	(14,045)	(10,170)
Redemptions of Federal Home Loan Bank of New York stock	11,373	8,438
Purchases of debt securities available-for-sale	(206,709)	(17,746)
Principal payments and maturities on debt securities available-for-sale	56,699	45,390
Principal payments and maturities on debt securities held-to-maturity	103	101
Proceeds from sale of debt securities available-for-sale	29,608	967
Proceeds from bank owned life insurance	174	2,043
Purchases and improvements of premises and equipment	(841)	(641)
Net cash used in investing activities	(203,640)	(53,957)
Cash flows from financing activities:
Net increase in deposits	130,302	(35,114)
Dividends paid	(9,294)	(7,348)
Exercise of stock options	1,491	92
Increase in advance payments by borrowers for taxes and insurance	3,211	2,962
Repayments under capital lease obligations	(124)	(109)
Proceeds from securities sold under agreements to repurchase and other borrowings	415,545	179,725
Repayments related to securities sold under agreements to repurchase and other borrowings	(362,635)	(152,132)
Net cash provided by (used in) financing activities	178,496	(11,924)
Net increase (decrease) in cash and cash equivalents	894	(45,786)
Cash and cash equivalents at beginning of period	57,839	96,085
Cash and cash equivalents at end of period	58,733	50,299
Cash paid during the period for:
Interest	15,222	10,927
Income taxes	4,747	4,500
Non-cash transactions:
Loans recoveries, net	(18)	(127)
Transfer of originated loans held-for-investment to loans held-for-sale at fair value	$ 0	$ 2,009

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements are comprised of the accounts of Northfield Bancorp, Inc. (the “ Company ” ) and its wholly owned subsidiaries, Northfield Investments, Inc. and Northfield Bank (the “ Bank ” ), and the Bank’s wholly-owned significant subsidiaries, NSB Services Corp. and NSB Realty Trust. All significant intercompany accounts and transactions have been eliminated in consolidation. In the opinion of management, all adjustments (consisting solely 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 six months ended June 30, 2018 , are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2018 or for any other period. Whenever necessary, certain prior year amounts are reclassified to conform to the current year presentation. In preparing the unaudited consolidated financial statements in conformity with U.S. generally accepted accounting principles (U.S. GAAP), management has made estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated statements of financial condition and results of operations for the periods indicated. Material estimates that are particularly susceptible to change are: the allowance for loan losses, the evaluation of goodwill and other intangible assets, impairment on investment securities, fair value measurements of assets and liabilities, and income taxes. Estimates and assumptions are reviewed periodically and the effects of revisions are reflected in the consolidated financial statements in the period they are deemed necessary. While management uses its best judgment, actual amounts or results could differ significantly from those estimates. Certain information and note disclosures usually included in financial statements prepared in accordance with 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 interim financial statements. The consolidated financial statements presented should be read in conjunction with the audited consolidated financial statements and notes to consolidated financial statements included in the Annual Report on Form 10-K for the year ended December 31, 2017 , of the Company as filed with the SEC.

Debt Securities Available-for-S

Debt Securities Available-for-Sale	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Debt Securities Available-for-Sale	Debt Securities Available-for-Sale The following is a comparative summary of mortgage-backed and other debt securities available-for-sale at June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 Gross Gross Estimated Amortized unrealized unrealized fair cost gains losses value Mortgage-backed securities: Pass-through certificates: Government sponsored enterprises (GSE) $ 247,743 $ 581 $ 5,238 $ 243,086 Real estate mortgage investment conduits (REMICs): GSE 283,386 95 10,760 272,721 Non-GSE 76 — 1 75 531,205 676 15,999 515,882 Other debt securities: Municipal bonds 276 3 — 279 Corporate bonds 109,801 215 898 109,118 110,077 218 898 109,397 Total debt securities available-for-sale $ 641,282 $ 894 $ 16,897 $ 625,279 December 31, 2017 Gross Gross Estimated Amortized unrealized unrealized fair cost gains losses value Mortgage-backed securities: Pass-through certificates: GSE $ 179,320 $ 1,429 $ 2,454 $ 178,295 REMICs: GSE 273,501 287 6,859 266,929 Non-GSE 80 — 1 79 452,901 1,716 9,314 445,303 Other debt securities: Municipal bonds 343 6 — 349 Corporate bonds 67,927 401 198 68,130 68,270 407 198 68,479 Total debt securities available-for-sale $ 521,171 $ 2,123 $ 9,512 $ 513,782 The following is a summary of the expected maturity distribution of debt securities available-for-sale, other than mortgage-backed securities, at June 30, 2018 (in thousands): Available-for-sale Amortized cost Estimated fair value Due after one year through five years $ 100,189 $ 99,505 Due after five years through ten years 9,888 9,892 $ 110,077 $ 109,397 Contractual maturities for mortgage-backed securities are not included above, as expected maturities on mortgage-backed securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without penalties. Certain securities available-for-sale are pledged or encumbered to secure borrowings under Pledge Agreements and Repurchase Agreements and for other purposes required by law. At June 30, 2018 , the fair value of securities available-for-sale that were pledged to secure borrowings and deposits was $441.2 million . For the three and six months ended June 30, 2018 , the Company had gross proceeds of $10.1 million and $29.6 million , respectively, on sales of debt securities available-for-sale, with gross realized gains of $116,000 and $176,000 and gross realized losses of $0 and $5,000 . For the three and six months ended June 30, 2017, the Company had gross proceeds of $967,000 on sales of debt securities available-for-sale, with no gross realized gains and gross realized losses of $4,000 . The Company recognized net gains of $197,000 and $302,000 on its trading securities portfolio during the three and six months ended June 30, 2018 , respectively. The Company recognized net gains of $260,000 and $668,000 , on its trading securities portfolio during the three and six months ended June 30, 2017 , respectively. Gross unrealized losses on mortgage-backed and other debt securities available-for-sale, and the estimated fair value of the related securities, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at June 30, 2018 , and December 31, 2017 , were as follows (in thousands): June 30, 2018 Less than 12 months 12 months or more Total Unrealized Estimated Unrealized Estimated Unrealized Estimated losses fair value losses fair value losses fair value Mortgage-backed securities: Pass-through certificates: GSE $ 1,538 $ 104,219 $ 3,700 $ 74,599 $ 5,238 $ 178,818 REMICs: GSE 2,720 120,720 8,040 120,653 10,760 241,373 Non-GSE — — 1 75 1 75 Other debt securities: Corporate bonds 514 75,010 384 14,798 898 89,808 Total $ 4,772 $ 299,949 $ 12,125 $ 210,125 $ 16,897 $ 510,074 December 31, 2017 Less than 12 months 12 months or more Total Unrealized Estimated Unrealized Estimated Unrealized Estimated losses fair value losses fair value losses fair value Mortgage-backed securities: Pass-through certificates: GSE $ 439 $ 48,931 $ 2,015 $ 76,113 $ 2,454 $ 125,044 REMICs: GSE 933 103,644 5,926 139,830 6,859 243,474 Non-GSE — — 1 79 1 79 Other debt securities: Corporate bonds 61 11,006 137 15,084 198 26,090 Total $ 1,433 $ 163,581 $ 8,079 $ 231,106 $ 9,512 $ 394,687 The Company held 33 pass-through mortgage-backed securities issued or guaranteed by GSEs, 19 REMIC mortgage-backed securities issued or guaranteed by GSEs, one REMIC mortgage-backed security not issued or guaranteed by a GSE, and three corporate bonds that were in a continuous unrealized loss position of twelve months or greater at June 30, 2018 . There were 40 pass-through mortgage-backed securities issued or guaranteed by GSEs, 37 REMIC mortgage-backed securities issued or guaranteed by a GSE, and 13 corporate bonds that were in an unrealized loss position of less than twelve months at June 30, 2018 . All securities referred to above were rated investment grade at June 30, 2018 . The declines in value relate to the general interest rate environment and are considered temporary. The securities cannot be prepaid in a manner that would result in the Company not receiving substantially all of its amortized cost. The Company neither has an intent to sell, nor is it more likely than not that the Company will be required to sell, the securities before the recovery of their amortized cost basis or, if necessary, maturity. The fair values of our investment securities could decline in the future if the underlying performance of the collateral for the collateralized mortgage obligations or other securities deteriorates and our credit enhancement levels do not provide sufficient protections to our contractual principal and interest, which may result in other-than-temporary impairment in the future. The Company did no t recognize any other-than-temporary impairment charges during the three and six months ended June 30, 2018 , or June 30, 2017 . Equity Securities At both June 30, 2018 , and December 31, 2017, equity securities totaled $1.3 million . Equity securities consist of money market mutual funds, recorded at fair value of $272,000 and $323,000 , at June 30, 2018 , and December 31, 2017 , respectively, and an investment in a private Small Business Administration (“SBA”) Loan Fund recorded at net asset value of $1.0 million at both June 30, 2018 , and December 31, 2017 . As the SBA Loan Fund operates as a private fund, its shares are not publicly traded and therefore have no readily determinable market value. The investment in the fund is recorded at net asset value as a practical expedient for reporting fair market value. Upon adoption of Accounting Standards Update (“ASU”) No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities as of January 1, 2018, the Company reclassified its equity securities out of available-for-sale securities to equity securities on the consolidated balance sheets for all periods presented. For further details on ASU No. 2016-01 see Note 12 - “Recently Issued and Adopted Accounting Pronouncements.”

Debt Securities Held-to-Maturit

Debt Securities Held-to-Maturity	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Debt Securities Held-to-Maturity	Debt Securities Held-to-Maturity The following is a summary of debt securities held-to-maturity at June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Mortgage-backed securities: Pass-through certificates: GSEs $ 9,819 $ — $ 290 $ 9,529 Total securities held-to-maturity $ 9,819 $ — $ 290 $ 9,529 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Mortgage-backed securities: Pass-through certificates: GSEs $ 9,931 $ 17 $ 56 $ 9,892 Total securities held-to-maturity $ 9,931 $ 17 $ 56 $ 9,892 Contractual maturities for mortgage-backed securities are not presented, as expected maturities on mortgage‑backed securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without penalties. There were no sales of held-to-maturity securities for the three and six months ended June 30, 2018 , or June 30, 2017 . At June 30, 2018 , debt securities held-to-maturity with a carrying value of $7.1 million were pledged to secure borrowings and deposits. Gross unrealized losses on mortgage-backed securities held-to-maturity, and the estimated fair value of the related securities, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at June 30, 2018 and December 31, 2017 , were as follows (in thousands): June 30, 2018 Less than 12 months 12 months or more Total Unrealized losses Estimated fair value Unrealized losses Estimated fair value Unrealized losses Estimated fair value Mortgage-backed securities: Pass-through certificates: GSEs $ 145 $ 5,930 $ 145 $ 3,599 $ 290 $ 9,529 Total securities held-to-maturity $ 145 $ 5,930 $ 145 $ 3,599 $ 290 $ 9,529 December 31, 2017 Less than 12 months 12 months or more Total Unrealized losses Estimated fair value Unrealized losses Estimated fair value Unrealized losses Estimated fair value Mortgage-backed securities: Pass-through certificates: GSEs $ 7 $ 3,922 $ 49 $ 3,735 $ 56 $ 7,657 Total securities held-to-maturity $ 7 $ 3,922 $ 49 $ 3,735 $ 56 $ 7,657 The Company held two pass-through mortgage-backed securities held-to-maturity, issued or guaranteed by GSEs that were in a continuous unrealized loss position of greater than twelve months at June 30, 2018 , and four pass-through mortgage-backed securities held-to-maturity, issued or guaranteed by GSEs that were in a continuous unrealized loss position of less than twelve months at June 30, 2018 . Management evaluated these securities and concluded that the declines in value relate to the general interest rate environment and are considered temporary. The securities cannot be prepaid in a manner that would result in the Company not receiving substantially all of its amortized cost. The Company neither has an intent to sell, nor is it more likely than not that the Company will be required to sell, the securities before the recovery of their amortized cost basis or, if necessary, maturity. The fair values of our investment securities could decline in the future if the underlying performance of the collateral for the collateralized mortgage obligations or other securities deteriorates and our credit enhancement levels do not provide sufficient protections to our contractual principal and interest. As a result, there is a risk that significant other-than-temporary impairments may occur in the future given the current economic environment. The Company did no t recognize any other-than-temporary impairment charges in earnings on securities held-to-maturity during the three and six months ended June 30, 2018 , or June 30, 2017 .

Equity Securities

Equity Securities	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Equity Securities	Debt Securities Available-for-Sale The following is a comparative summary of mortgage-backed and other debt securities available-for-sale at June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 Gross Gross Estimated Amortized unrealized unrealized fair cost gains losses value Mortgage-backed securities: Pass-through certificates: Government sponsored enterprises (GSE) $ 247,743 $ 581 $ 5,238 $ 243,086 Real estate mortgage investment conduits (REMICs): GSE 283,386 95 10,760 272,721 Non-GSE 76 — 1 75 531,205 676 15,999 515,882 Other debt securities: Municipal bonds 276 3 — 279 Corporate bonds 109,801 215 898 109,118 110,077 218 898 109,397 Total debt securities available-for-sale $ 641,282 $ 894 $ 16,897 $ 625,279 December 31, 2017 Gross Gross Estimated Amortized unrealized unrealized fair cost gains losses value Mortgage-backed securities: Pass-through certificates: GSE $ 179,320 $ 1,429 $ 2,454 $ 178,295 REMICs: GSE 273,501 287 6,859 266,929 Non-GSE 80 — 1 79 452,901 1,716 9,314 445,303 Other debt securities: Municipal bonds 343 6 — 349 Corporate bonds 67,927 401 198 68,130 68,270 407 198 68,479 Total debt securities available-for-sale $ 521,171 $ 2,123 $ 9,512 $ 513,782 The following is a summary of the expected maturity distribution of debt securities available-for-sale, other than mortgage-backed securities, at June 30, 2018 (in thousands): Available-for-sale Amortized cost Estimated fair value Due after one year through five years $ 100,189 $ 99,505 Due after five years through ten years 9,888 9,892 $ 110,077 $ 109,397 Contractual maturities for mortgage-backed securities are not included above, as expected maturities on mortgage-backed securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without penalties. Certain securities available-for-sale are pledged or encumbered to secure borrowings under Pledge Agreements and Repurchase Agreements and for other purposes required by law. At June 30, 2018 , the fair value of securities available-for-sale that were pledged to secure borrowings and deposits was $441.2 million . For the three and six months ended June 30, 2018 , the Company had gross proceeds of $10.1 million and $29.6 million , respectively, on sales of debt securities available-for-sale, with gross realized gains of $116,000 and $176,000 and gross realized losses of $0 and $5,000 . For the three and six months ended June 30, 2017, the Company had gross proceeds of $967,000 on sales of debt securities available-for-sale, with no gross realized gains and gross realized losses of $4,000 . The Company recognized net gains of $197,000 and $302,000 on its trading securities portfolio during the three and six months ended June 30, 2018 , respectively. The Company recognized net gains of $260,000 and $668,000 , on its trading securities portfolio during the three and six months ended June 30, 2017 , respectively. Gross unrealized losses on mortgage-backed and other debt securities available-for-sale, and the estimated fair value of the related securities, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at June 30, 2018 , and December 31, 2017 , were as follows (in thousands): June 30, 2018 Less than 12 months 12 months or more Total Unrealized Estimated Unrealized Estimated Unrealized Estimated losses fair value losses fair value losses fair value Mortgage-backed securities: Pass-through certificates: GSE $ 1,538 $ 104,219 $ 3,700 $ 74,599 $ 5,238 $ 178,818 REMICs: GSE 2,720 120,720 8,040 120,653 10,760 241,373 Non-GSE — — 1 75 1 75 Other debt securities: Corporate bonds 514 75,010 384 14,798 898 89,808 Total $ 4,772 $ 299,949 $ 12,125 $ 210,125 $ 16,897 $ 510,074 December 31, 2017 Less than 12 months 12 months or more Total Unrealized Estimated Unrealized Estimated Unrealized Estimated losses fair value losses fair value losses fair value Mortgage-backed securities: Pass-through certificates: GSE $ 439 $ 48,931 $ 2,015 $ 76,113 $ 2,454 $ 125,044 REMICs: GSE 933 103,644 5,926 139,830 6,859 243,474 Non-GSE — — 1 79 1 79 Other debt securities: Corporate bonds 61 11,006 137 15,084 198 26,090 Total $ 1,433 $ 163,581 $ 8,079 $ 231,106 $ 9,512 $ 394,687 The Company held 33 pass-through mortgage-backed securities issued or guaranteed by GSEs, 19 REMIC mortgage-backed securities issued or guaranteed by GSEs, one REMIC mortgage-backed security not issued or guaranteed by a GSE, and three corporate bonds that were in a continuous unrealized loss position of twelve months or greater at June 30, 2018 . There were 40 pass-through mortgage-backed securities issued or guaranteed by GSEs, 37 REMIC mortgage-backed securities issued or guaranteed by a GSE, and 13 corporate bonds that were in an unrealized loss position of less than twelve months at June 30, 2018 . All securities referred to above were rated investment grade at June 30, 2018 . The declines in value relate to the general interest rate environment and are considered temporary. The securities cannot be prepaid in a manner that would result in the Company not receiving substantially all of its amortized cost. The Company neither has an intent to sell, nor is it more likely than not that the Company will be required to sell, the securities before the recovery of their amortized cost basis or, if necessary, maturity. The fair values of our investment securities could decline in the future if the underlying performance of the collateral for the collateralized mortgage obligations or other securities deteriorates and our credit enhancement levels do not provide sufficient protections to our contractual principal and interest, which may result in other-than-temporary impairment in the future. The Company did no t recognize any other-than-temporary impairment charges during the three and six months ended June 30, 2018 , or June 30, 2017 . Equity Securities At both June 30, 2018 , and December 31, 2017, equity securities totaled $1.3 million . Equity securities consist of money market mutual funds, recorded at fair value of $272,000 and $323,000 , at June 30, 2018 , and December 31, 2017 , respectively, and an investment in a private Small Business Administration (“SBA”) Loan Fund recorded at net asset value of $1.0 million at both June 30, 2018 , and December 31, 2017 . As the SBA Loan Fund operates as a private fund, its shares are not publicly traded and therefore have no readily determinable market value. The investment in the fund is recorded at net asset value as a practical expedient for reporting fair market value. Upon adoption of Accounting Standards Update (“ASU”) No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities as of January 1, 2018, the Company reclassified its equity securities out of available-for-sale securities to equity securities on the consolidated balance sheets for all periods presented. For further details on ASU No. 2016-01 see Note 12 - “Recently Issued and Adopted Accounting Pronouncements.”

Loans

Loans	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Loans	Loans Net loans held-for-investment are as follows (in thousands): June 30, December 31, 2018 2017 Real estate loans: Multifamily $ 1,800,421 $ 1,735,712 Commercial mortgage 499,518 445,225 One-to-four family residential mortgage 100,257 100,942 Home equity and lines of credit 72,728 66,254 Construction and land 26,983 34,545 Total real estate loans 2,499,907 2,382,678 Commercial and industrial loans 39,682 34,828 Other loans 1,532 1,430 Total commercial and industrial and other loans 41,214 36,258 Deferred loan cost, net 6,799 6,339 Originated loans held-for-investment, net 2,547,920 2,425,275 PCI Loans 21,331 22,741 Loans acquired: One-to-four family residential mortgage 265,709 275,053 Multifamily 180,951 199,149 Commercial mortgage 155,250 163,962 Home equity and lines of credit 19,009 20,455 Construction and land 14,999 17,201 Total acquired real estate loans 635,918 675,820 Commercial and industrial loans 14,939 16,946 Other loans 18 37 Total loans acquired, net 650,875 692,803 Loans held-for-investment, net 3,220,126 3,140,819 Allowance for loan losses (26,882 ) (26,160 ) Net loans held-for-investment $ 3,193,244 $ 3,114,659 There were no loans held-for-sale at June 30, 2018 , or December 31, 2017 . PCI loans totaled $21.3 million at June 30, 2018 , as compared to $22.7 million at December 31, 2017 . The majority of the PCI loan balance is attributable to those loans acquired as part of a Federal Deposit Insurance Corporation-assisted transaction. The Company accounts for PCI loans utilizing U.S. GAAP applicable to loans acquired with deteriorated credit quality. At June 30, 2018 , PCI loans consist of approximately 27% commercial real estate loans and 50% commercial and industrial loans, with the remaining balance in residential and home equity loans. At December 31, 2017 , PCI loans consist of approximately 27% commercial real estate loans and 50% commercial and industrial loans, with the remaining balance in residential and home equity loans. The following table details the accretion of interest income for PCI loans for the three and six months ended June 30, 2018 and June 30, 2017 (in thousands): At or for the three months ended June 30, At or for the six months ended June 30, 2018 2017 2018 2017 Balance at the beginning of period $ 23,412 $ 22,763 $ 24,502 $ 24,215 Accretion into interest income (1,026 ) (1,321 ) (2,116 ) (2,773 ) Balance at end of period $ 22,386 $ 21,442 $ 22,386 $ 21,442 The following tables set forth activity in our allowance for loan losses, by loan type, as of and for the three and six months ended June 30, 2018 , and June 30, 2017 (in thousands): Three Months Ended June 30, 2018 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Unallocated Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Beginning balance $ 5,213 $ 455 $ 463 $ 17,412 $ 225 $ 1,337 $ 113 $ — $ 25,218 $ 951 $ 3 $ 26,172 Charge-offs — — — — — — — — — — — — Recoveries 12 — — 26 — — — — 38 — 2 40 Provisions (credit) 493 (71 ) (25 ) 165 54 65 (6 ) — 675 — (5 ) 670 Ending balance $ 5,718 $ 384 $ 438 $ 17,603 $ 279 $ 1,402 $ 107 $ — $ 25,931 $ 951 $ — $ 26,882 Three Months Ended June 30, 2017 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Unallocated Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Beginning balance $ 5,231 $ 649 $ 165 $ 16,184 $ 492 $ 1,561 $ 72 $ — $ 24,354 $ 896 $ 34 $ 25,284 Charge-offs — — — (178 ) (104 ) — — — (282 ) — (8 ) (290 ) Recoveries 17 — — — 64 17 — — 98 — 2 100 Provisions (credit) (12 ) (99 ) 64 630 (89 ) (46 ) 25 — 473 — 38 511 Ending balance $ 5,236 $ 550 $ 229 $ 16,636 $ 363 $ 1,532 $ 97 $ — $ 24,643 $ 896 $ 66 $ 25,605 Six Months Ended June 30, 2018 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Unallocated Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Beginning balance $ 5,196 $ 503 $ 610 $ 17,374 $ 122 $ 1,273 $ 94 $ — $ 25,172 $ 951 $ 37 $ 26,160 Charge-offs (3 ) — — — (60 ) — — — (63 ) — (1 ) (64 ) Recoveries 28 — — 26 — 20 — — 74 — 8 82 Provisions/(credit) 497 (119 ) (172 ) 203 217 109 13 — 748 — (44 ) 704 Ending balance $ 5,718 $ 384 $ 438 $ 17,603 $ 279 $ 1,402 $ 107 $ — $ 25,931 $ 951 $ — $ 26,882 Six Months Ended June 30, 2017 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Unallocated Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Beginning balance $ 5,432 $ 664 $ 172 $ 14,952 $ 588 $ 1,720 $ 96 $ — $ 23,624 $ 896 $ 75 $ 24,595 Charge-offs (4 ) — — (178 ) (104 ) — — — (286 ) — (31 ) (317 ) Recoveries 34 — — 278 64 64 — — 440 — 4 444 Provisions/(credit) (226 ) (114 ) 57 1,584 (185 ) (252 ) 1 — 865 — 18 883 Ending balance $ 5,236 $ 550 $ 229 $ 16,636 $ 363 $ 1,532 $ 97 $ — $ 24,643 $ 896 $ 66 $ 25,605 The following tables detail the amount of loans receivable held-for-investment, net of deferred loan fees and costs, that are evaluated individually, and collectively, for impairment, and the related portion of the allowance for loan losses that is allocated to each loan portfolio segment, at June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Ending balance: individually evaluated for impairment $ 13 $ 18 $ — $ — $ 10 $ 2 $ — $ 43 $ — $ — $ 43 Ending balance: collectively evaluated for impairment $ 5,705 $ 366 $ 438 $ 17,603 $ 269 $ 1,400 $ 107 $ 25,888 $ 951 $ — $ 26,839 Loans, net: Ending balance $ 500,051 $ 101,354 $ 27,048 $ 1,803,834 $ 74,324 $ 39,776 $ 1,533 $ 2,547,920 $ 21,331 $ 650,875 $ 3,220,126 Ending balance: individually evaluated for impairment $ 15,707 $ 1,947 $ — $ 1,275 $ 65 $ 152 $ — $ 19,146 $ — $ 944 $ 20,090 Ending balance: collectively evaluated for impairment $ 484,344 $ 99,407 $ 27,048 $ 1,802,559 $ 74,259 $ 39,624 $ 1,533 $ 2,528,774 $ 21,331 $ 649,931 $ 3,200,036 December 31, 2017 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Ending balance: individually evaluated for impairment $ — $ 38 $ — $ — $ 4 $ 3 $ — $ 45 $ — $ 37 $ 82 Ending balance: collectively evaluated for impairment $ 5,196 $ 465 $ 610 $ 17,374 $ 118 $ 1,270 $ 94 $ 25,127 $ 951 $ — $ 26,078 Loans, net: Ending balance $ 445,781 $ 101,650 $ 34,620 $ 1,739,220 $ 67,679 $ 34,893 $ 1,432 $ 2,425,275 $ 22,741 $ 692,803 $ 3,140,819 Ending balance: individually evaluated for impairment $ 16,008 $ 1,996 $ — $ 1,310 $ 69 $ 159 $ — $ 19,542 $ — $ 1,543 $ 21,085 Ending balance: collectively evaluated for impairment $ 429,773 $ 99,654 $ 34,620 $ 1,737,910 $ 67,610 $ 34,734 $ 1,432 $ 2,405,733 $ 22,741 $ 691,260 $ 3,119,734 The Company monitors the credit quality of its loan portfolio on a regular basis. Credit quality is monitored by reviewing certain credit quality indicators. Management has determined that loan-to-value ratios (at period end) and internally assigned credit risk ratings by loan type are the key credit quality indicators that best measure the credit quality of the Company’s loan receivables. Loan-to-value ( “LTV” ) ratios used by management in monitoring credit quality are based on current period loan balances and original appraised values at time of origination (unless a current appraisal has been obtained as a result of the loan being deemed impaired). In calculating the provision for loan losses, based on past loan loss experience, management has determined that commercial real estate loans and multifamily loans having loan-to-value ratios, as described above, of less than 35% , and one-to-four family loans having loan-to-value ratios, as described above, of less than 60% , require less of a loss factor than those with higher loan to value ratios. The Company maintains a credit risk rating system as part of the risk assessment of its loan portfolio. The Company’s lending officers are required to assign a credit risk rating to each loan in their portfolio at origination. This risk rating is reviewed periodically and adjusted if necessary. Monthly, management presents monitored assets to the loan committee. In addition, the Company engages a third-party independent loan reviewer that performs semi-annual reviews of a sample of loans, validating the credit risk ratings assigned to such loans. The credit risk ratings play an important role in the establishment of the loan loss provision and the allowance for loan losses for originated loans held-for-investment. After determining the general reserve loss factor for each originated portfolio segment held-for-investment, the originated portfolio segment held-for-investment balance collectively evaluated for impairment is multiplied by the general reserve loss factor for the respective portfolio segment in order to determine the general reserve. When assigning a risk rating to a loan, management utilizes the Bank’s internal nine-point credit risk rating system. 1. Strong 2. Good 3. Acceptable 4. Adequate 5. Watch 6. Special Mention 7. Substandard 8. Doubtful 9. Loss Loans rated 1 to 5 are considered pass ratings. An asset is classified substandard if it is inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Substandard assets have well defined weaknesses based on objective evidence, and are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Assets classified as doubtful have all of the weaknesses inherent in those classified substandard with the added characteristic that the weaknesses present make collection or liquidation in full highly questionable and improbable based on current circumstances. Assets classified as loss are those considered uncollectible and of such little value that their continuance as assets is not warranted. Assets which do not currently expose the Company to sufficient risk to warrant classification in one of the aforementioned categories, but possess weaknesses, are required to be designated special mention. The following tables detail the recorded investment of originated loans held-for-investment, net of deferred fees and costs, by loan type and credit quality indicator at June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 Real Estate Multifamily Commercial One-to-Four Family Construction and Land Home Equity and Lines of Credit Commercial and Industrial Other Total < 35% LTV => 35% LTV < 35% LTV => 35% LTV < 60% LTV => 60% LTV Internal Risk Rating Pass $ 139,016 $ 1,662,881 $ 71,628 $ 416,297 $ 59,099 $ 39,571 $ 27,048 $ 74,079 $ 39,064 $ 1,533 $ 2,530,216 Special Mention — 626 402 1,158 672 — — 27 538 — 3,423 Substandard — 1,311 — 10,566 1,434 578 — 218 174 — 14,281 Originated loans held-for-investment, net $ 139,016 $ 1,664,818 $ 72,030 $ 428,021 $ 61,205 $ 40,149 $ 27,048 $ 74,324 $ 39,776 $ 1,533 $ 2,547,920 December 31, 2017 Real Estate Multifamily Commercial One-to-Four Family Construction and Land Home Equity and Lines of Credit Commercial and Industrial Other Total < 35% LTV => 35% LTV < 35% LTV => 35% LTV < 60% LTV => 60% LTV Internal Risk Rating Pass $ 131,792 $ 1,603,947 $ 84,620 $ 346,857 $ 60,400 $ 38,504 $ 34,620 $ 67,426 $ 34,141 $ 1,432 $ 2,403,739 Special Mention — 1,897 410 2,170 683 — — 28 571 — 5,759 Substandard — 1,584 — 11,724 1,470 593 — 225 181 — 15,777 Originated loans held-for-investment, net $ 131,792 $ 1,607,428 $ 85,030 $ 360,751 $ 62,553 $ 39,097 $ 34,620 $ 67,679 $ 34,893 $ 1,432 $ 2,425,275 Included in loans receivable (including loans held-for-sale) are loans for which the accrual of interest income has been discontinued due to deterioration in the financial condition of the borrowers. The recorded investment of these non-accrual loans was $6.4 million and $5.5 million at June 30, 2018 , and December 31, 2017 , respectively. Generally, loans are placed on non-accrual status when they become 90 days or more delinquent, or sooner if considered appropriate by management, and remain on non-accrual status until they are brought current, have six consecutive months of performance under the loan terms, and factors indicating reasonable doubt about the timely collection of payments no longer exist. Therefore, loans may be current in accordance with their loan terms, or may be less than 90 days delinquent and still be on a non-accruing status. These non-accrual amounts included loans deemed to be impaired of $3.3 million and $3.1 million at June 30, 2018 , and December 31, 2017 , respectively. Loans on non-accrual status with principal balances less than $500,000 , and therefore not meeting the Company’s definition of an impaired loan, amounted to $3.1 million and $2.4 million at June 30, 2018 , and December 31, 2017 , respectively. There were no non-accrual loans held-for-sale at June 30, 2018 and December 31, 2017 . There were no loans past due 90 days or more and still accruing interest at June 30, 2018 . Loans past due 90 days or more and still accruing interest were $28,000 at December 31, 2017 , and consisted of loans that are considered well-secured and in the process of collection. The following tables set forth the detail, and delinquency status, of non-performing loans (non-accrual loans and loans past due 90 days or more and still accruing), net of deferred fees and costs, at June 30, 2018 , and December 31, 2017 , excluding loans held-for-sale and PCI loans which have been segregated into pools. For PCI loans, each loan pool is accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows (in thousands): June 30, 2018 Total Non-Performing Loans Non-Accruing Loans 0-29 Days Past Due 30-89 Days Past Due 90 Days or More Past Due Total 90 Days or More Past Due and Accruing Total Non-Performing Loans Loans held-for-investment: Real estate loans: Commercial LTV => 35% Substandard $ — $ 719 $ 2,304 $ 3,023 $ — $ 3,023 Total commercial — 719 2,304 3,023 — 3,023 One-to-four family residential LTV < 60% Substandard — 442 77 519 — 519 Total — 442 77 519 — 519 LTV => 60% Substandard — — 36 36 — 36 Total one-to-four family residential — 442 113 555 — 555 Home equity and lines of credit Substandard 77 — — 77 — 77 Total home equity and lines of credit 77 — — 77 — 77 Commercial and industrial loans Substandard — — 72 72 — 72 Total commercial and industrial loans — — 72 72 — 72 Total non-performing loans held-for-investment, originated 77 1,161 2,489 3,727 — 3,727 Loans acquired: Real estate loans: Commercial LTV < 35% Substandard — — 291 291 — 291 LTV => 35% Substandard 519 250 537 1,306 — 1,306 Total commercial 519 250 828 1,597 — 1,597 One-to-four family residential LTV < 60% Substandard — 200 85 285 — 285 LTV => 60% Substandard — — 124 124 — 124 Total one-to-four family residential — 200 209 409 — 409 Multifamily LTV < 35% Substandard — — 152 152 — 152 LTV => 35% Substandard — 416 — 416 — 416 Total multifamily — 416 152 568 — 568 Home equity and lines of credit Substandard — 28 49 77 — 77 Total home equity and lines of credit — 28 49 77 — 77 Total non-performing loans acquired 519 894 1,238 2,651 — 2,651 Total non-performing loans $ 596 $ 2,055 $ 3,727 $ 6,378 $ — $ 6,378 December 31, 2017 Total Non-Performing Loans Non-Accruing Loans 0-29 Days Past Due 30-89 Days Past Due 90 Days or More Past Due Total 90 Days or More Past Due and Accruing Total Non-Performing Loans Loans held-for-investment: Real estate loans: Commercial LTV => 35% Substandard $ 432 $ 314 $ 2,305 $ 3,051 $ — $ 3,051 Total commercial 432 314 2,305 3,051 — 3,051 One-to-four family residential LTV < 60% Substandard — 206 328 534 — 534 LTV => 60% Substandard — — 39 39 — 39 Total one-to-four family residential — 206 367 573 — 573 Home equity and lines of credit Substandard 79 — — 79 — 79 Total home equity and lines of credit 79 — — 79 — 79 Commercial and industrial loans Substandard — — 72 72 — 72 Total commercial and industrial loans — — 72 72 — 72 Total non-performing loans held-for-investment, originated 511 520 2,744 3,775 — 3,775 Loans acquired: Real estate loans: Commercial LTV < 35% Substandard — — 205 205 — 205 LTV => 35% Substandard — 773 58 831 — 831 Total commercial — 773 263 1,036 — 1,036 One-to-four family residential LTV < 60% Substandard — 201 — 201 27 228 Total one-to-four family residential — 201 — 201 27 228 Multifamily LTV => 35% Substandard — 417 — 417 — 417 Total multifamily — 417 — 417 — 417 Home equity and lines of credit Substandard — 28 49 77 — 77 Total home equity and lines of credit — 28 49 77 — 77 Commercial and industrial loans Substandard — — 2 2 — 2 Total commercial and industrial loans — — 2 2 — 2 Other loans - Pass — — — — 1 1 Total non-performing loans acquired — 1,419 314 1,733 28 1,761 Total non-performing loans $ 511 $ 1,939 $ 3,058 $ 5,508 $ 28 $ 5,536 The following tables set forth the detail and delinquency status of originated and acquired loans held-for-investment, net of deferred fees and costs, by performing and non-performing loans at June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 Performing (Accruing) Loans 0-29 Days Past Due 30-89 Days Past Due Total Non-Performing Loans Total Loans Receivable, net Loans held-for-investment: Real estate loans: Commercial LTV < 35% Pass $ 71,628 $ — $ 71,628 $ — $ 71,628 Special Mention — 402 402 — 402 Total 71,628 402 72,030 — 72,030 LTV => 35% Pass 414,716 1,581 416,297 — 416,297 Special Mention 1,158 — 1,158 — 1,158 Substandard 7,543 — 7,543 3,023 10,566 Total 423,417 1,581 424,998 3,023 428,021 Total commercial 495,045 1,983 497,028 3,023 500,051 One-to-four family residential LTV < 60% Pass 56,690 2,409 59,099 — 59,099 Special Mention — 672 672 — 672 Substandard 915 — 915 519 1,434 Total 57,605 3,081 60,686 519 61,205 LTV => 60% Pass 39,335 236 39,571 — 39,571 Substandard 319 223 542 36 578 Total 39,654 459 40,113 36 40,149 Total one-to-four family residential 97,259 3,540 100,799 555 101,354 Construction and land Pass 27,046 2 27,048 — 27,048 Total construction and land 27,046 2 27,048 — 27,048 Multifamily LTV < 35% Pass 138,715 301 139,016 — 139,016 Total 138,715 301 139,016 — 139,016 LTV => 35% Pass 1,662,881 — 1,662,881 — 1,662,881 Special Mention 626 — 626 — 626 Substandard 81 1,230 1,311 — 1,311 Total 1,663,588 1,230 1,664,818 — 1,664,818 Total multifamily 1,802,303 1,531 1,803,834 — 1,803,834 Home equity and lines of credit Pass 73,983 96 74,079 — 74,079 Special Mention 27 — 27 — 27 Substandard 141 — 141 77 218 Total home equity and lines of credit 74,151 96 74,247 77 74,324 Commercial and industrial Pass 39,057 7 39,064 — 39,064 Special Mention 501 37 538 — 538 Substandard 102 — 102 72 174 Total commercial and industrial 39,660 44 39,704 72 39,776 June 30, 2018 Performing (Accruing) Loans (Continued) 0-29 Days Past Due 30-89 Days Past Due Total Non-Performing Loans Total Loans Receivable, net Other loans - Pass 1,524 9 1,533 — 1,533 Total originated loans held-for-investment 2,536,988 7,205 2,544,193 3,727 2,547,920 Acquired loans: Real estate loans: One-to-four family residential LTV < 60% Pass 240,125 2,069 242,194 — 242,194 Special Mention 429 — 429 — 429 Substandard 64 13 77 285 362 Total 240,618 2,082 242,700 285 242,985 LTV => 60% Pass 22,068 532 22,600 — 22,600 Substandard — — — 124 124 Total 22,068 532 22,600 124 22,724 Total one-to-four family residential 262,686 2,614 265,300 409 265,709 Commercial LTV < 35% Pass 52,486 — 52,486 — 52,486 Special Mention 88 70 158 — 158 Substandard — 84 84 291 375 Total 52,574 154 52,728 291 53,019 LTV => 35% Pass 92,790 3,945 96,735 — 96,735 Special Mention — 131 131 — 131 Substandard 3,639 420 4,059 1,306 5,365 Total 96,429 4,496 100,925 1,306 102,231 Total commercial 149,003 4,650 153,653 1,597 155,250 Construction and land Pass 14,999 — 14,999 — 14,999 Total construction and land 14,999 — 14,999 — 14,999 Multifamily LTV < 35% Pass 172,481 — 172,481 — 172,481 Special Mention — 65 65 — 65 Substandard — — — 152 152 Total 172,481 65 172,546 152 172,698 LTV => 35% Pass 7,837 — 7,837 — 7,837 Substandard — — — 416 416 Total 7,837 — 7,837 416 8,253 Total multifamily 180,318 65 180,383 568 180,951 Home equity and lines of credit Pass 18,832 18 18,850 — 18,850 Substandard 82 — 82 77 159 Total home equity and lines of credit 18,914 18 18,932 77 19,009 Commercial and industrial Pass 14,939 — 14,939 — 14,939 Total commercial and industrial 14,939 — 14,939 — 14,939 Other loans - Pass 18 — 18 — 18 Total loans acquired 640,877 7,347 648,224 2,651 650,875 $ 3,177,865 $ 14,552 $ 3,192,417 $ 6,378 $ 3,198,795 December 31, 2017 Performing (Accruing) Loans 0-29 Days Past Due 30-89 Days Past Due Total Non-Performing Loans Total Loans Receivable, net Loans held-for-investment: Real estate loans: Commercial LTV < 35% Pass $ 84,620 $ — $ 84,620 — $ 84,620 Special Mention — 410 410 — 410 Total 84,620 410 85,030 — 85,030 LTV => 35% Pass 346,229 628 346,857 — 346,857 Special Mention 832 1,338 2,170 — 2,170 Substandard 7,675 998 8,673 3,051 11,724 Total 354,736 2,964 357,700 3,051 360,751 Total commercial 439,356 3,374 442,730 3,051 445,781 One-to-four family residential LTV < 60% Pass 57,907 2,493 60,400 — 60,400 Special Mention — 683 683 — 683 Substandard 322 614 936 534 1,470 Total 58,229 3,790 62,019 534 62,553 LTV => 60% Pass 38,504 — 38,504 — 38,504 Substandard 554 — 554 39 593 Total 39,058 — 39,058 39 39,097 Total one-to-four family residential 97,287 3,790 101,077 573 101,650 Construction and land Pass 34,614 6 34,620 — 34,620 Total construction and land 34,614 6 34,620 — 34,620 Multifamily LTV < 35% Pass 131,488 304 131,792 — 131,792 Total 131,488 304 131,792 — 131,792 LTV => 35% Pass 1,603,714 233 1,603,947 — 1,603,947 Special Mention 638 1,259 1,897 — 1,897 Substandard 83 1,501 1,584 — 1,584 Total 1,604,435 2,993 1,607,428 — 1,607,428 Total multifamily 1,735,923 3,297 1,739,220 — 1,739,220 Home equity and lines of credit Pass 67,426 — 67,426 — 67,426 Special Mention 28 — 28 — 28 Substandard 146 — 146 79 225 Total home equity and lines of credit 67,600 — 67,600 79 67,679 Commercial and industrial loans Pass 34,003 138 34,141 — 34,141 Special Mention 547 24 571 — 571 Substandard 109 — 109 72 181 Total commercial and industrial loans 34,659 162 34,821 72 34,893 Other loans - Pass 1,403 29 1,432 — 1,432 Total originated loans held-for-investment $ 2,410,842 $ 10,658 $ 2,421,500 $ 3,775 $ 2,425,275 December 31, 2017 Performing (Accruing) Loans 0-29 Days Past Due 30-89 Days Past Due Total Non-Performing Loans Total Loans Receivable, net Loans Acquired Real estate loans: One-to-four family residential LTV < 60% Pass 250,149 224 250,373 — 250,373 Special Mention 455 — 455 — 455 Substandard 417 150 567 228 795 Total 251,021 374 251,395 228 251,623 LTV => 60% Pass 23,295 — 23,295 — 23,295 Substandard 135 — 135 — 135 Total 23,430 — 23,430 — 23,430 Total one-to-four family residential 274,451 374 274,825 228 275,053 Commercial LTV < 35% Pass 50,035 70 50,105 — 50,105 Special Mention 91 — 91 — 91 Substandard — 181 181 205 386 Total 50,126 251 50,377 205 50,582 LTV => 35% Pass 108,125 158 108,283 — 108,283 Special Mention — 133 133 — 133 Substandard 3,703 430 4,133 831 4,964 Total 111,828 721 112,549 831 113,380 Total commercial 161,954 972 162,926 1,036 163,962 Construction and land Pass 17,201 — 17,201 — 17,201 Total construction and land 17,201 — 17,201 — 17,201 Multifamily LTV < 35% Pass 189,551 — 189,551 — 189,551 Special Mention 78 — 78 — 78 Substandard 153 — 153 — 153 Total 189,782 — 189,782 — 189,782 LTV => 35% Pass 8,950 — 8,950 — 8,950 Substandard — — — 417 417 Total 8,950 — 8,950 417 9,367 Total multifamily 198,732 — 198,732 417 199,149 Home equity and lines of credit Pass 20,291 — 20,291 — 20,291 Substandard 87 — 87 77 164 Total home equity and lines of credit 20,378 — 20,378 77 20,455 Commercial and industrial loans Pass 16,904 40 16,944 — 16,944 Substandard — — — 2 2 Total commercial and industrial loans 16,904 40 16,944 2 16,946 Other 36 — 36 1 37 Total loans acquired 689,656 1,386 691,042 1,761 692,803 $ 3,100,498 $ 12,044 $ 3,112,542 $ 5,536 $ 3,118,078 The following table summarizes originated and acquired impaired loans as of June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 December 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance With No Allowance Recorded: Real estate loans: Commercial LTV < 35% Substandard $ — $ 139 $ — $ — $ 139 $ — LTV => 35% Pass 4,632 5,519 — 6,263 7,150 — Substandard 9,608 10,423 — 9,745 10,560 — One-to-four family residential LTV < 60% Pass 1,571 1,640 — 1,189 1,254 — Substandard 241 241 — 251 251 — LTV => 60% Pass 132 159 — 136 161 — Substandard 124 276 — 135 286 — Multifamily LTV < 35% Substandard 152 152 — 153 153 — LTV => 35% Pass 45 515 — 1,309 1,780 — Substandard 1,230 1,230 — — — — Home equity and lines of credit Pass 31 31 — 33 33 — Commercial and industrial loans Substandard 129 129 — 135 135 — With a Related Allowance Recorded: Real estate loans: Commercial LTV => 35% Pass 1,467 1,467 (13 ) — — — One-to-four family residential LTV < 60% Pass — — — 411 411 (7 ) Substandard 671 671 (18 ) 997 997 (49 ) LTV => 60% Pass — — — 268 268 (19 ) Home equity and lines of credit Substandard 34 34 (10 ) 36 36 (4 ) Commercial and industrial loans Special Mention 23 23 (2 ) 24 24 (3 ) Total: Real estate loans Commercial 15,707 17,548 (13 ) 16,008 17,849 — One-to-four family residential 2,739 2,987 (18 ) 3,387 3,628 (75 ) Multifamily 1,427 1,897 — 1,462 1,933 — Home equity and lines of credit 65 65 (10 ) 69 69 (4 ) Commercial and industrial loans 152 152 (2 ) 159 159 (3 ) $ 20,090 $ 22,649 $ (43 ) $ 21,085 $ 23,638 $ (82 ) Included in the above table at June 30, 2018 , are impaired loans with carrying balances of $13.2 million that were not written down by charge-offs or for which there are no specific reserves in our allowance for loan losses. Included in impaired loans at December 31, 2017 , are loans with carrying balances of $14.5 million that were not written down by charge-offs or for which there are no specific reserves in our allowance for loan losses. Loans not written down by charge-offs or specific reserves at June 30, 2018 , and December 31, 2017 , are considered to have sufficient collateral values, less costs to sell, to support the carrying balances of the loans. The following table summarizes the average recorded investment in originated and acquired impaired loans (excluding PCI loans) and interest recognized on impaired loans as of, and for, the three and six months ended June 30, 2018 , and June 30, 2017 (in thousands): Three Months Ended Six Months Ended June 30, 2018 June 30, 2017 June 30, 2018 June 30, 2017 Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income With No Allowance Recorded: Real estate loans: Commercial LTV < 35% Substandard $ — $ — $ — $ 16 $ — $ — $ — $ 22 LTV => 35% Pass 4,664 65 5,836 68 5,197 129 5,194 132 Substandard 9,650 75 12,557 129 9,681 150 13,298 256 One-to-four family residential LTV < 60% Pass 1,374 13 622 8 1,312 27 626 15 Substandard 246 4 585 6 248 4 451 12 LTV => 60% Pass 267 1 — — 223 5 — — Substandard 129 — 278 5 131 3 392 10 Multifamily LTV < 35% Substandard 152 1 154 2 152 2 155 3 LTV => 35% Pass 46 4 58 4 467 8 60 8 Substandard 1,237 16 — — 825 28 — — Home equity and lines of credit Pass 31 — 37 — 32 1 38 1 Commercial and industrial loans Substandard 131 — 143 — 132 — 120 — With a Related Allowance Recorded: Real estate loans: Commercial LTV => 35% Pass 1,476 20 — — 984 40 — — Substandard — — — — — — 673 — One-to-four family residential LTV < 60% Pass 204 2 — — 273 3 — — Substandard 674 4 1,398 9 782 8 1,439 19 LTV => 60% Pass — — 272 6 89 — 273 10 Substandard — — 189 — — — 253 — Multifamily LTV => 35% Pass — — 1,289 8 — — 1,296 20 Three Months Ended Six Months Ended June 30, 2018 June 30, 2017 June 30, 2018 June 30, 2017 Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income Substandard — — 450 — — — 300 — Home equity and lines of credit Pass — — 254 2 — — 255 3 Substandard 35 — 38 — 35 1 38 1 Commercial and industrial loans Special Mention 23 — 26 — 23 1 26 — Total: Real estate loans Commercial 15,790 160 18,393 213 15,862 319 19,165 410 One-to-four family residential 2,894 24 3,344 34 3,058 50 3,434 66 Multifamily 1,435 21 1,951 14 1,444 38 1,811 31 Home equity and lines of credit 66 — 329 2 67 2 331 5 Commercial and industrial loans 154 — 169 — 155 1 146 — $ 20,339 $ 205 $ 24,186 $ 263 $ 20,586 $ 410 $ 24,887 $ 512 There were no loans modified as troubled debt restructurings (TDRs) during the three and six months ended June 30, 2018 and 2017. At June 30, 2018 , and December 31, 2017 , we had TDRs of $17.3 million and $18.3 million , respectively. Management classifies all TDRs as impaired loans. Impaired loans are individually assessed to determine that the loan’s carrying value is not in excess of the estimated fair value of the collateral less cost to sell, if the loan is collateral dependent, or the present value of the expected future cash flows, if the loan is not collateral dependent. Management performs an evaluation of each impaired loan and generally obtains updated appraisals as part of the evaluation. In addition, management adjusts estimated fair values down to appropriately consider recent market conditions, our willingness to accept a lower sales price to effect a quick sale, and costs to dispose of any supporting collateral. Determining the estimated fair value of underlying collateral (and related costs to sell) can be difficult in illiquid real estate markets and is subject to significant assumptions and estimates. Management employs an independent third-party management firm that specializes in appraisal preparation and review to ascertain the reasonableness of updated appraisals. Projecting the expected cash flows under troubled debt restructurings which are not collateral dependent is inherently subjective and requires, among other things, an evaluation of the borrower’s current and projected financial condition. Actual results may be significantly different than our projections and our established allowance for loan losses on these loans, which could have a material effect on our financial results. At June 30, 2018 , there were no TDR loans that were restructured during the preceding twelve months ended June 30, 2018 , that subsequently defaulted.

Deposits

Deposits	6 Months Ended
	Jun. 30, 2018
Banking and Thrift [Abstract]
Deposits	Deposits Deposits account balances are summarized as follows (in thousands): June 30, 2018 December 31, 2017 Non-interest-bearing demand $ 411,427 $ 407,267 Interest-bearing negotiable orders of withdrawal (NOW) 421,167 465,140 Savings and money market 1,162,218 1,225,643 Certificates of deposit 972,469 738,929 Total deposits $ 2,967,281 $ 2,836,979 Interest expense on deposit accounts is summarized for the periods indicated (in thousands): Three Months Ended Six Months Ended June 30, June 30, 2018 2017 2018 2017 Negotiable orders of withdrawal, savings, and money market $ 2,312 $ 2,079 $ 4,455 $ 4,109 Certificates of deposit 3,738 1,820 6,806 3,410 Total interest expense on deposit accounts $ 6,050 $ 3,899 $ 11,261 $ 7,519

Equity Incentive Plan

Equity Incentive Plan	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity Incentive Plan	Equity Incentive Plan The following table is a summary of the Company’s stock options outstanding as of June 30, 2018 , and changes therein during the six months then ended. Number of Stock Options Weighted Average Grant Date Fair Value Weighted Average Exercise Price Weighted Average Contractual Life (years) Outstanding - December 31, 2017 4,620,687 $ 3.51 $ 11.82 5.17 Forfeited (19,378 ) 2.99 9.84 — Exercised (1,105,157 ) 2.48 7.69 — Outstanding - June 30, 2018 3,496,152 3.83 13.14 5.81 Exercisable - June 30, 2018 2,661,611 3.77 12.77 5.52 Expected future stock option expense related to the non-vested options outstanding as of June 30, 2018 , is $2.7 million over a weighted average period of 1.46 years. The following is a summary of the status of the Company’s restricted stock awards as of June 30, 2018 , and changes therein during the six months then ended. Number of Shares Awarded Weighted Average Grant Date Fair Value Non-vested at December 31, 2017 585,895 $ 14.05 Vested (250,013 ) 13.73 Forfeited (1,760 ) 13.13 Non-vested at June 30, 2018 334,122 $ 14.29 Expected future stock award expense related to the non-vested restricted share awards as of June 30, 2018 , is $3.8 million over a weighted average period of 1.48 years. During the three months ended June 30, 2018 and 2017, the Company recorded $1.3 million and $1.6 million , respectively, of stock-based compensation related to the above plans. During the six months ended June 30, 2018 and 2017, the Company recorded $2.7 million and $3.2 million , respectively, of stock-based compensation related to the above plans.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The following tables present the assets reported on the consolidated balance sheets at their estimated fair value as of June 30, 2018 , and December 31, 2017 , by level within the fair value hierarchy as required by the Fair Value Measurements and Disclosures Topic of the Financial Accounting Standards Board ( “ FASB ” ) Accounting Standards Codification ( “ ASC ” ). Financial assets and liabilities are classified in their entirety based on the level of input that is significant to the fair value measurement. The fair value hierarchy is as follows: • Level 1 Inputs – Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. • Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (for example, interest rates, volatilities, prepayment speeds, loss severities, credit risks and default rates) or inputs that are derived principally from or corroborated by observable market data by correlations or other means. • Level 3 Inputs – Significant unobservable inputs that reflect the Company’s own assumptions that market participants would use in pricing the assets or liabilities. The methods of determining the fair value of assets and liabilities presented in this note are consistent with our methodologies disclosed in Note 14 to the Consolidated Financial Statements of the Company’s 2017 Annual Report on Form 10-K, except for the valuation of loans held for investment which was impacted by the adoption of ASU No. 2016-01. In accordance with ASU No. 2016-01, the fair value of loans held for investment is estimated using an “exit price” approach in estimating and disclosing fair value of financial instruments incorporating discounts for credit, liquidity and marketability factors. The fair values shown as of December 31, 2017, use an “entry price” approach. For further details on ASU 2016-01 see Note 12 - “ Recently Issued and Adopted Accounting Pronouncements. ” Fair Value Measurements at June 30, 2018 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (in thousands) Measured on a recurring basis: Assets: Investment securities: Debt securities available-for-sale: Mortgage-backed securities GSE: Pass-through certificates $ 243,086 $ — $ 243,086 $ — GSE: REMICs 272,721 — 272,721 — Non-GSE 75 — 75 — 515,882 — 515,882 — Other debt securities Municipal bonds 279 — 279 — Corporate bonds 109,118 — 109,118 — Total debt securities available-for-sale 109,397 — 109,397 — Trading securities 10,167 10,167 — — Equity securities 272 272 — — Total $ 635,718 $ 10,439 $ 625,279 $ — Measured on a non-recurring basis: Assets: Impaired loans: Real estate loans: Commercial real estate $ 5,943 $ — $ — $ 5,943 One-to-four family residential mortgage 777 — — 777 Multifamily 45 — — 45 Home equity and lines of credit 24 — — 24 Total impaired real estate loans 6,789 — — 6,789 Commercial and industrial loans 20 — — 20 Other real estate owned 850 — — 850 Total $ 7,659 $ — $ — $ 7,659 Fair Value Measurements at December 31, 2017 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (in thousands) Measured on a recurring basis: Assets: Investment securities: Debt securities available-for-sale: Mortgage-backed securities GSE: Pass-through certificates $ 178,295 $ — $ 178,295 $ — GSE: REMICs 266,929 — 266,929 — Non-GSE 79 — 79 — 445,303 — 445,303 — Other debt securities Municipal bonds 349 — 349 — Corporate bonds 68,130 — 68,130 — Total debt securities available-for-sale 68,479 — 68,479 — Trading securities 9,597 9,597 — — Equity securities 323 323 — — Total $ 523,702 $ 9,920 $ 513,782 $ — Measured on a non-recurring basis: Assets: Impaired loans: Real estate loans: Commercial real estate $ 4,645 $ — $ — $ 4,645 One-to-four family residential mortgage 1,735 — — 1,735 Multifamily 51 — — 51 Home equity and lines of credit 31 — — 31 Total impaired real estate loans 6,462 — — 6,462 Commercial and industrial loans 21 — — 21 Other real estate owned 850 — — 850 Total $ 7,333 $ — $ — $ 7,333 The following table presents qualitative information for Level 3 assets measured at fair value on a non-recurring basis at June 30, 2018 , and December 31, 2017 (dollars in thousands): Fair Value Valuation Methodology Unobservable Inputs Range of Inputs June 30, 2018 December 31, 2017 June 30, 2018 December 31, 2017 Impaired loans $ 6,809 $ 6,483 Appraisals Discount for costs to sell 7.0% 7.0% Discount for quick sale 10.0% 10.0% Discounted cash flows Interest rates 3.13% to 6.25% 3.13% to 6.5% Other real estate owned $ 850 $ 850 Appraisals Discount for costs to sell 7.0% 7.0% The valuation techniques described below were used to measure fair value of financial instruments in the tables below on a recurring basis and a non-recurring basis as of June 30, 2018, and December 31, 2017. Debt Securities Available for Sale: The estimated fair values for mortgage-backed securities, corporate, and other debt securities are obtained from an independent nationally recognized third-party pricing service. The estimated fair values are derived primarily from cash flow models, which include assumptions for interest rates, credit losses, and prepayment speeds. Broker/dealer quotes are utilized as well, when such quotes are available and deemed representative of the market. The significant inputs utilized in the cash flow models are based on market data obtained from sources independent of the Company (Observable Inputs), and are therefore classified as Level 2 within the fair value hierarchy. There were no transfers of securities between Level 1 and Level 2 during the six months ended June 30, 2018 . Trading Securities: Fair values are derived from quoted market prices in active markets. The assets consist of publicly traded mutual funds. Equity Securities: Fair values of equity securities consisting of publicly traded mutual funds are derived from quoted market prices in active markets. Impaired Loans: At June 30, 2018 , and December 31, 2017 , the Company had impaired loans held-for-investment (excluding PCI loans) with outstanding principal balances of $9.2 million and $8.8 million , respectively, which were recorded at their estimated fair value of $6.8 million and $6.5 million , respectively. The Company recorded a net decrease in the specific reserve for impaired loans of $39,000 and $127,000 for the six months ended June 30, 2018 and June 30, 2017 , respectively, utilizing level 3 inputs. For purposes of estimating the fair value of impaired loans, management utilizes independent appraisals, if the loan is collateral dependent, adjusted downward by management, as necessary, for changes in relevant valuation factors subsequent to the appraisal date, or the present value of expected future cash flows for non-collateral dependent loans and troubled debt restructurings. Other Real Estate Owned (OREO): At both June 30, 2018 , and December 31, 2017, the Company had assets acquired through foreclosure, or deed in lieu of foreclosure, of $850,000 . These assets are recorded at estimated fair value, less estimated selling costs when acquired, establishing a new cost basis. Estimated 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 considered Level 3 inputs. 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 write-down is recorded through non-interest expense. The valuation of foreclosed assets is subjective in nature and may be adjusted in the future because of changes in economic conditions. In addition, the Company may be required, from time to time, to measure the fair value of certain other financial assets on a nonrecurring basis in accordance with U.S. GAAP. The adjustments to fair value usually result from the application of lower-of-cost-or-market accounting or write downs of individual assets. Fair Value of Financial Instruments The FASB ASC Topic for Financial Instruments requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring or non-recurring basis. The methodologies for estimating the fair value of financial assets and financial liabilities that are measured at fair value on a recurring or non-recurring basis are discussed above. The following methods and assumptions were used to estimate the fair value of other financial assets and financial liabilities not already discussed above: (a) Cash and Cash Equivalents Cash and cash equivalents are short-term in nature with original maturities of three months or less; the carrying amount approximates fair value. Certificates of deposit having original terms of six-months or less; the carrying value generally approximates fair value. Certificates of deposit with an original maturity of six months or greater; the fair value is derived from discounted cash flows. (b) Debt Securities (Held to Maturity) The estimated fair values for substantially all of our securities are obtained from an independent nationally recognized pricing service. The independent pricing service utilizes market prices of same or similar securities whenever such prices are available. Prices involving distressed sellers are not utilized in determining fair value. Where necessary, the independent third-party pricing service estimates fair value using models employing techniques such as discounted cash flow analysis. The assumptions used in these models typically include assumptions for interest rates, credit losses, and prepayments, utilizing market observable data where available. (c) Investments in Equity Securities at Net Asset Value Per Share The Company uses net asset value as a practical expedient to record its investment in a private SBA Loan Fund since the shares in the fund are not publicly traded, do not have a readily determinable fair value and the net asset value per share is calculated in a manner consistent with the measurement principles of an investment company. (d) Federal Home Loan Bank of New York Stock The fair value for Federal Home Loan Bank of New York (FHLB) stock is its carrying value, since this is the amount for which it could be redeemed and there is no active market for this stock. (e) Loans (Held-for-Investment) Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as originated and purchased, and further segregated by residential mortgage, construction, land, multifamily, commercial and consumer. Each loan category is further segmented into amortizing and non-amortizing and fixed and adjustable rate interest terms and by performing and nonperforming categories. The fair value of loans is estimated using a discounted cash flow analysis. The discount rates used to determine fair value use interest rate spreads that reflect factors such as liquidity, credit, and nonperformance risk of the loans. (f) Loans (Held-for-Sale) Held-for-sale loans are carried at the lower of aggregate cost or estimated fair value, less costs to sell, and therefore fair value is equal to carrying value. (g) Deposits The fair value of deposits with no stated maturity, such as non-interest bearing demand deposits, savings, NOW 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 currently offered for deposits of similar remaining maturities. (h) Commitments to Extend Credit and Standby Letters of Credit The fair value of commitments to extend credit and standby letters of 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 fixed-rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair value of off‑balance sheet commitments is insignificant and therefore not included in the following table. (i) Borrowed Funds The fair value of borrowed funds is estimated by discounting future cash flows based on rates currently available for debt with similar terms and remaining maturity. (j) Advance Payments by Borrowers for Taxes and Insurance Advance payments by borrowers for taxes and insurance have no stated maturity; the fair value is equal to the amount currently payable. The estimated fair value of the Company’s financial instruments at June 30, 2018 , and December 31, 2017 , is presented in the following tables (in thousands): June 30, 2018 Estimated Fair Value Carrying Value Level 1 Level 2 Level 3 Total Financial assets: Cash and cash equivalents $ 58,733 $ 58,733 $ — $ — $ 58,733 Trading securities 10,167 10,167 — — 10,167 Debt securities available-for-sale 625,279 — 625,279 — 625,279 Debt securities held-to-maturity 9,819 — 9,529 — 9,529 Equity securities (1) 272 272 — — 272 Federal Home Loan Bank of New York stock, at cost 27,718 — 27,718 — 27,718 Net loans held-for-investment 3,193,244 — — 3,225,464 3,225,464 Financial liabilities: Deposits $ 2,967,281 $ — $ 2,969,119 $ — $ 2,969,119 Borrowed funds 524,335 — 516,297 — 516,297 Advance payments by borrowers for taxes and insurance 18,009 — 18,009 — 18,009 December 31, 2017 Estimated Fair Value Carrying Value Level 1 Level 2 Level 3 Total Financial assets: Cash and cash equivalents $ 57,839 $ 57,839 $ — $ — $ 57,839 Trading securities 9,597 9,597 — — 9,597 Debt securities available-for-sale 513,782 — 513,782 — 513,782 Debt securities held-to-maturity 9,931 — 9,892 — 9,892 Equity securities (1) 323 323 — 323 Federal Home Loan Bank of New York stock, at cost 25,046 — 25,046 — 25,046 Net loans held-for-investment 3,114,659 — — 3,157,829 3,157,829 Financial liabilities: Deposits $ 2,836,979 $ — $ 2,839,666 $ — $ 2,839,666 Borrowed funds 471,549 — 466,625 — 466,625 Advance payments by borrowers for taxes and insurance 14,798 — 14,798 — 14,798 (1) Excludes $1.0 million of investments measured at net asset value at June 30, 2018, and December 31, 2017, which have not been classified in the fair value hierarchy. 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. Because no market exists for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding future expected losses, 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. 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.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share is computed by dividing net income available to common stockholders by the weighted average number of shares outstanding during the period. For purposes of calculating basic earnings per share, weighted average common shares outstanding excludes unallocated employee stock ownership plan (“ESOP”) shares that have not been committed for release and unvested restricted stock. Diluted earnings per share is computed using the same method as basic earnings per share, but reflects the potential dilution that could occur if stock options and unvested shares of restricted stock were exercised and converted into common stock. These potentially dilutive shares would then be included in the weighted average number of shares outstanding for the period using the treasury stock method. When applying the treasury stock method we added the assumed proceeds from option exercises and the average unamortized compensation costs related to unvested shares of restricted stock and stock options. We then divided this sum by our average stock price for the period to calculate assumed shares repurchased. The excess of the number of shares issuable over the number of shares assumed to be repurchased is added to basic weighted average common shares to calculate diluted earnings per share. The following is a summary of the Company’s earnings per share calculations and reconciliation of basic to diluted earnings per share for the periods indicated (dollars in thousands, except per share data): Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Net income available to common stockholders $ 10,612 $ 8,410 $ 21,056 $ 18,358 Weighted average shares outstanding-basic 46,184,918 45,252,136 45,983,895 45,137,791 Effect of non-vested restricted stock and stock options outstanding 925,059 1,579,226 1,072,404 1,741,467 Weighted average shares outstanding-diluted 47,109,977 46,831,362 47,056,299 46,879,258 Earnings per share-basic $ 0.23 $ 0.19 $ 0.46 $ 0.41 Earnings per share-diluted $ 0.23 $ 0.18 $ 0.45 $ 0.39 Anti-dilutive shares 858,844 50,000 872,294 45,000

Commitments

Commitments	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments	Commitments The Company has obligations related to non-cancelable operating leases and capitalized leases on property used for banking purposes, that were disclosed in its Annual Report on Form 10-K for the year ended December 31, 2017. During the quarter ended March 31, 2018, the Company entered into a new lease agreement for 1,800 square feet of space at a branch facility in Brooklyn, New York, for a minimum term of 15 years through March 31, 2033 , with three five -year options to renew. Pursuant to the terms of this lease we estimate our total additional future minimum rent payments to be approximately $5.8 million .

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition Effective January 1, 2018, the Company adopted ASU No. 2014-09, Revenue from Contracts with Customers ( “ Topic 606 ”) and all subsequent ASUs that modified Topic 606. For further details on ASU No. 2014-09 see Note 12 - “ Recently Issued and Adopted Accounting Pronouncements. ” The adoption of ASU No. 2014-09 did not have a material impact on the measurement or recognition of revenue as it does not apply to revenue associated with financial instruments, including revenue from loans and investment securities, which is the Company's primary source of revenue. In addition, certain non-interest income streams such as income on bank owned life insurance, gains on securities transactions, and other non-interest income are not in the scope of the guidance. The Company’s revenue streams that are within the scope of Topic 606 include service charges on deposit accounts, ATM and card interchange fees, and investment services fees. However, the revenue recognition of these revenue streams did not change upon adoption of Topic 606 as our customer contracts generally do not have performance obligations and fees are assessed and collected as the transaction occurs. The following table summarizes non-interest income for the periods indicated (in thousands): Three Months Ended Six Months Ended June 30, June 30, 2018 2017 2018 2017 Fees and service charges for customer services: Service charges $ 771 768 $ 1,612 1,640 ATM and card interchange fees 313 284 580 544 Investment fees 63 55 169 141 Total fees and service charges for customer services 1,147 1,107 2,361 2,325 Income on bank owned life insurance 914 1,010 1,868 3,468 Gains on securities transactions, net 313 256 473 664 Other 71 64 147 127 Total non-interest income $ 2,445 $ 2,437 $ 4,849 $ 6,584 The following revenue streams are within the scope of Topic 606: Fees and service charges for customer services. Fees and service charges for customer services include: (i) service charges on deposit accounts, including account maintenance fees, overdraft fees, insufficient funds fees, wire fees, and other deposit related fees; (ii) ATM and card interchange fees, which include fees generated when a Bank cardholder uses a non-Bank ATM or a non-Bank cardholder uses a Bank ATM, and fees earned whenever the Bank's debit cards are processed through card payment networks such as Visa; and (iii) investment services fees earned through partnering with a third party investment and brokerage service firm to provide insurance and investment products to customers. The Company's performance obligation for fees and service charges is satisfied and related revenue recognized immediately or in the month of performance of services.

Recently Issued and Adopted Acc

Recently Issued and Adopted Accounting Pronouncements	6 Months Ended
	Jun. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Issued and Adopted Accounting Pronouncements	Recently Issued and Adopted Accounting Pronouncements Accounting Pronouncements Adopted in 2018 ASU No. 2014-09. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) . The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies generally will be required to use more judgment and make more estimates than under current guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. Subsequent to the issuance of ASU No. 2014-09, the FASB issued targeted updates to clarify specific implementation issues including ASU No. 2016-08, “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU No. 2016-10, “Identifying Performance Obligations and Licensing,” ASU No. 2016-12, “Narrow-Scope Improvements and Practical Expedients,” and ASU No. 2016-20 “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers.” The new standard was effective for the Company on January 1, 2018. The adoption of ASU No. 2014-09 did not have a material impact on the Company’s consolidated financial statements and related disclosures as the Company’s primary sources of revenues are derived from interest income on financial assets that are not within the scope of the guidance. Management conducted an assessment of the revenue streams that were potentially affected by the guidance and reviewed contracts in scope to ensure compliance with the guidance. These contracts included those related to service charges on deposit accounts, ATM and card interchange fees, and investment services fees. The Company’s revenue recognition pattern for these revenue streams did not change from current practice. Additional disclosures required by the standard have been included in Note 11. “Revenue Recognition.” ASU No. 2016-01. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities , which addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The guidance primarily affects the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments including the following: 1) Requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income; 2) Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; 3) Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; 4) Requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value and 5) Reduces diversity in current practice by clarifying that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity’s other deferred tax assets. ASU No. 2016-01 is effective for the Company for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. The Company adopted ASU No. 2016-01 effective January 1, 2018, which did not have a material impact on the Company’s consolidated financial statements due to the Company's proportionately small portfolio of equity securities and no liabilities that are measured at fair value. The primary impact of the adoption of ASU No. 2016-01 was the reclassification of equity securities from available-for-sale to equity securities on the consolidated balance sheets and the use of an exit price notion for valuing loans at fair value. See Note 4 - “Equity Securities” and Note 8 - “Fair Value Measurements” for further details. ASU No. 2016-15. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments , which provides guidance on how certain cash receipts and cash payments should be classified and presented in the statement of cash flows. ASU No. 2016-15 includes guidance on eight specific cash flow issues with the objective of reducing the existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. ASU No. 2016-15 is effective for annual and interim reporting periods beginning after December 15, 2017. The Company adopted ASU No. 2016-15 effective January 1, 2018, which did not have a material impact on the Company's consolidated statements of cash flows. ASU No. 2017-07. In March 2017, the FASB issued ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost , which requires that companies disaggregate the service cost component from other components of net benefit cost. The guidance requires companies that offer postretirement benefits to present the service cost, which is the amount an employer has to set aside each quarter or fiscal year to cover the benefits, in the same line item with other current employee compensation costs. Other components of net benefit cost will be presented in the income statement separately from the service cost component and outside the subtotal of income from operations, if one is presented. The Company adopted ASU No. 2017-07 effective January 1, 2018, which did not have a material impact on the Company’s consolidated financial statements. Accounting Pronouncements Not Yet Adopted ASU 2018-07. In June 2018, the FASB issued ASU No. 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting, which is intended to align the accounting for share-based payment awards issued to employees and nonemployees. ASU 2018-07 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company's share-based payment awards to nonemployees consist only of grants made to the Company's Directors as compensation solely related to the individual's role as a Director. As such, the ASU is not expected to have an impact on the Company's consolidated financial statements, as share-based payment awards to nonemployee Directors are accounted for in the same manner as share-based payment awards for employees. ASU No. 2018-03. In February 2018, the FASB issued ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments-Overall (Subtopic 825-10), which clarifies certain aspects of the guidance issued in ASU No. 2016-01 including: the ability to irrevocably elect to change the measurement approach for equity securities measured using the practical expedient (at cost plus or minus observable transactions less impairment) to a fair value method in accordance with Topic 820, Fair Value Measurement; clarification that if an observable transaction occurs for such securities, the adjustment is as of the observable transaction date; clarification that the prospective transition approach for equity securities without a readily determinable fair value is meant only for instances in which the practical expedient is elected; and various other clarifications. ASU No. 2018-03 is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years beginning after June 15, 2018. Adoption is not expected to have a material impact on the Company's consolidated financial statements. ASU No. 2017-08. In March 2017, the FASB issued ASU No. 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities . The amendments in this update require the premium on callable debt securities to be amortized to the earliest call date rather than the maturity date; however, securities held at a discount continue to be amortized to maturity. The amendments apply only to debt securities purchased at a premium that are callable at fixed prices and on preset dates. The amendments more closely align interest income recorded on debt securities held at a premium or discount with the economics of the underlying instrument. ASU No. 2017-08 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted, and is to be applied using the modified retrospective method. ASU No. 2017-08 is not expected to have a significant effect on the Company's consolidated financial statements. ASU No 2017-04. In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The ASU simplifies the subsequent measurement of goodwill impairment by eliminating the requirement to calculate the implied fair value of goodwill (i.e., the current Step 2 of the goodwill impairment test) to measure a goodwill impairment charge. As amended, the goodwill impairment test will consist of one step comparing the fair value of a reporting unit with its carrying amount. A goodwill impairment charge should be recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value. The ASU is effective for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim and annual goodwill impairment testing dates after January 1, 2017. The adoption of this pronouncement is not expected to have an effect on the Company's consolidated financial statements. ASU No. 2016-13. In June 2016, the FASB issued No. ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which requires credit losses on most financial assets measured at amortized cost and certain other instruments to be measured using an expected credit loss model (referred to as the current expected credit loss (“CECL”) model. Under this model, entities will estimate credit losses over the entire contractual term of the instrument from the date of initial recognition of that instrument. Current US GAAP is based on an incurred loss model that delays recognition of credit losses until it is probable the loss has been incurred. Accordingly, it is anticipated that credit losses will be recognized earlier under the CECL model than under the incurred loss model. ASU No. 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted for interim and annual reporting periods beginning after December 15, 2018. The Company continues to evaluate the potential effect of adoption of this pronouncement on its consolidated financial statements by identifying key interpretive issues, assessing its processes, portfolio segmentation, model development, and identifying the data and system requirements against the guidance to determine what modifications may be required. As part of the evaluation process, the Company has also established a CECL working group that includes individuals from various functional areas to assess processes and has selected a third-party vendor to assist in the application of the ASU No. 2016-13. The adoption of ASU No. 2016-13 may result in an increase in the allowance for loan losses as a result of changing from an incurred loss model, which encompasses allowances for current known and inherent losses within the portfolio, to an expected losses model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. The extent of the effect is indeterminable at this time as it will depend upon the nature and characteristics of the Company's loan portfolio at the adoption date, as well as economic conditions and forecasts at that date. ASU No. 2016-02. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) , which is intended to increase transparency and comparability of accounting for lease transactions. The ASU will require all leases to be recognized on the balance sheet as lease assets and lease liabilities and will require both quantitative and qualitative disclosures regarding key information about leasing arrangements. Lessor accounting is largely unchanged. The guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within that reporting period. The Company is currently evaluating the potential effect of adoption of this pronouncement on its consolidated financial statements. The Company has several lease agreements, such as branch locations, which are currently considered operating leases, and therefore, not recognized on the Company’s consolidated statements of condition. The guidance will require these lease agreements to be recognized on the consolidated balance sheets as a right-of-use asset and a corresponding lease liability. Therefore, the Company’s preliminary evaluation indicates the provisions of ASU No. 2016-02 are expected to impact the Company’s consolidated balance sheets; the extent of such impact is under evaluation. The Company does not expect the guidance to have a material impact on its results of operations. The Company is nearing completion of identifying a complete inventory of arrangements containing a lease and accumulating the data necessary to apply the amended guidance. The Company has contracted with a third-party software vendor to aid in the transition to the new leasing guidance implementation.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reclassification	Whenever necessary, certain prior year amounts are reclassified to conform to the current year presentation.
Basis of Accounting	In preparing the unaudited consolidated financial statements in conformity with U.S. generally accepted accounting principles (U.S. GAAP), management has made estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated statements of financial condition and results of operations for the periods indicated.
Use of Estimates	Material estimates that are particularly susceptible to change are: the allowance for loan losses, the evaluation of goodwill and other intangible assets, impairment on investment securities, fair value measurements of assets and liabilities, and income taxes. Estimates and assumptions are reviewed periodically and the effects of revisions are reflected in the consolidated financial statements in the period they are deemed necessary. While management uses its best judgment, actual amounts or results could differ significantly from those estimates.
Fair Value Measurements	The following tables present the assets reported on the consolidated balance sheets at their estimated fair value as of June 30, 2018 , and December 31, 2017 , by level within the fair value hierarchy as required by the Fair Value Measurements and Disclosures Topic of the Financial Accounting Standards Board ( “ FASB ” ) Accounting Standards Codification ( “ ASC ” ). Financial assets and liabilities are classified in their entirety based on the level of input that is significant to the fair value measurement. The fair value hierarchy is as follows: • Level 1 Inputs – Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. • Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (for example, interest rates, volatilities, prepayment speeds, loss severities, credit risks and default rates) or inputs that are derived principally from or corroborated by observable market data by correlations or other means. • Level 3 Inputs – Significant unobservable inputs that reflect the Company’s own assumptions that market participants would use in pricing the assets or liabilities.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The FASB ASC Topic for Financial Instruments requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring or non-recurring basis. The methodologies for estimating the fair value of financial assets and financial liabilities that are measured at fair value on a recurring or non-recurring basis are discussed above. The following methods and assumptions were used to estimate the fair value of other financial assets and financial liabilities not already discussed above: (a) Cash and Cash Equivalents Cash and cash equivalents are short-term in nature with original maturities of three months or less; the carrying amount approximates fair value. Certificates of deposit having original terms of six-months or less; the carrying value generally approximates fair value. Certificates of deposit with an original maturity of six months or greater; the fair value is derived from discounted cash flows. (b) Debt Securities (Held to Maturity) The estimated fair values for substantially all of our securities are obtained from an independent nationally recognized pricing service. The independent pricing service utilizes market prices of same or similar securities whenever such prices are available. Prices involving distressed sellers are not utilized in determining fair value. Where necessary, the independent third-party pricing service estimates fair value using models employing techniques such as discounted cash flow analysis. The assumptions used in these models typically include assumptions for interest rates, credit losses, and prepayments, utilizing market observable data where available. (c) Investments in Equity Securities at Net Asset Value Per Share The Company uses net asset value as a practical expedient to record its investment in a private SBA Loan Fund since the shares in the fund are not publicly traded, do not have a readily determinable fair value and the net asset value per share is calculated in a manner consistent with the measurement principles of an investment company. (d) Federal Home Loan Bank of New York Stock The fair value for Federal Home Loan Bank of New York (FHLB) stock is its carrying value, since this is the amount for which it could be redeemed and there is no active market for this stock. (e) Loans (Held-for-Investment) Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as originated and purchased, and further segregated by residential mortgage, construction, land, multifamily, commercial and consumer. Each loan category is further segmented into amortizing and non-amortizing and fixed and adjustable rate interest terms and by performing and nonperforming categories. The fair value of loans is estimated using a discounted cash flow analysis. The discount rates used to determine fair value use interest rate spreads that reflect factors such as liquidity, credit, and nonperformance risk of the loans. (f) Loans (Held-for-Sale) Held-for-sale loans are carried at the lower of aggregate cost or estimated fair value, less costs to sell, and therefore fair value is equal to carrying value. (g) Deposits The fair value of deposits with no stated maturity, such as non-interest bearing demand deposits, savings, NOW 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 currently offered for deposits of similar remaining maturities. (h) Commitments to Extend Credit and Standby Letters of Credit The fair value of commitments to extend credit and standby letters of 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 fixed-rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair value of off‑balance sheet commitments is insignificant and therefore not included in the following table. (i) Borrowed Funds The fair value of borrowed funds is estimated by discounting future cash flows based on rates currently available for debt with similar terms and remaining maturity. (j) Advance Payments by Borrowers for Taxes and Insurance Advance payments by borrowers for taxes and insurance have no stated maturity; the fair value is equal to the amount currently payable.
Earnings Per Share	Basic earnings per share is computed by dividing net income available to common stockholders by the weighted average number of shares outstanding during the period. For purposes of calculating basic earnings per share, weighted average common shares outstanding excludes unallocated employee stock ownership plan (“ESOP”) shares that have not been committed for release and unvested restricted stock. Diluted earnings per share is computed using the same method as basic earnings per share, but reflects the potential dilution that could occur if stock options and unvested shares of restricted stock were exercised and converted into common stock. These potentially dilutive shares would then be included in the weighted average number of shares outstanding for the period using the treasury stock method. When applying the treasury stock method we added the assumed proceeds from option exercises and the average unamortized compensation costs related to unvested shares of restricted stock and stock options. We then divided this sum by our average stock price for the period to calculate assumed shares repurchased. The excess of the number of shares issuable over the number of shares assumed to be repurchased is added to basic weighted average common shares to calculate diluted earnings per share.
Recently Issued and Adopted Accounting Pronouncements	Recently Issued and Adopted Accounting Pronouncements Accounting Pronouncements Adopted in 2018 ASU No. 2014-09. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) . The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies generally will be required to use more judgment and make more estimates than under current guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. Subsequent to the issuance of ASU No. 2014-09, the FASB issued targeted updates to clarify specific implementation issues including ASU No. 2016-08, “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU No. 2016-10, “Identifying Performance Obligations and Licensing,” ASU No. 2016-12, “Narrow-Scope Improvements and Practical Expedients,” and ASU No. 2016-20 “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers.” The new standard was effective for the Company on January 1, 2018. The adoption of ASU No. 2014-09 did not have a material impact on the Company’s consolidated financial statements and related disclosures as the Company’s primary sources of revenues are derived from interest income on financial assets that are not within the scope of the guidance. Management conducted an assessment of the revenue streams that were potentially affected by the guidance and reviewed contracts in scope to ensure compliance with the guidance. These contracts included those related to service charges on deposit accounts, ATM and card interchange fees, and investment services fees. The Company’s revenue recognition pattern for these revenue streams did not change from current practice. Additional disclosures required by the standard have been included in Note 11. “Revenue Recognition.” ASU No. 2016-01. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities , which addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The guidance primarily affects the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments including the following: 1) Requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income; 2) Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; 3) Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; 4) Requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value and 5) Reduces diversity in current practice by clarifying that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity’s other deferred tax assets. ASU No. 2016-01 is effective for the Company for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. The Company adopted ASU No. 2016-01 effective January 1, 2018, which did not have a material impact on the Company’s consolidated financial statements due to the Company's proportionately small portfolio of equity securities and no liabilities that are measured at fair value. The primary impact of the adoption of ASU No. 2016-01 was the reclassification of equity securities from available-for-sale to equity securities on the consolidated balance sheets and the use of an exit price notion for valuing loans at fair value. See Note 4 - “Equity Securities” and Note 8 - “Fair Value Measurements” for further details. ASU No. 2016-15. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments , which provides guidance on how certain cash receipts and cash payments should be classified and presented in the statement of cash flows. ASU No. 2016-15 includes guidance on eight specific cash flow issues with the objective of reducing the existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. ASU No. 2016-15 is effective for annual and interim reporting periods beginning after December 15, 2017. The Company adopted ASU No. 2016-15 effective January 1, 2018, which did not have a material impact on the Company's consolidated statements of cash flows. ASU No. 2017-07. In March 2017, the FASB issued ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost , which requires that companies disaggregate the service cost component from other components of net benefit cost. The guidance requires companies that offer postretirement benefits to present the service cost, which is the amount an employer has to set aside each quarter or fiscal year to cover the benefits, in the same line item with other current employee compensation costs. Other components of net benefit cost will be presented in the income statement separately from the service cost component and outside the subtotal of income from operations, if one is presented. The Company adopted ASU No. 2017-07 effective January 1, 2018, which did not have a material impact on the Company’s consolidated financial statements. Accounting Pronouncements Not Yet Adopted ASU 2018-07. In June 2018, the FASB issued ASU No. 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting, which is intended to align the accounting for share-based payment awards issued to employees and nonemployees. ASU 2018-07 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company's share-based payment awards to nonemployees consist only of grants made to the Company's Directors as compensation solely related to the individual's role as a Director. As such, the ASU is not expected to have an impact on the Company's consolidated financial statements, as share-based payment awards to nonemployee Directors are accounted for in the same manner as share-based payment awards for employees. ASU No. 2018-03. In February 2018, the FASB issued ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments-Overall (Subtopic 825-10), which clarifies certain aspects of the guidance issued in ASU No. 2016-01 including: the ability to irrevocably elect to change the measurement approach for equity securities measured using the practical expedient (at cost plus or minus observable transactions less impairment) to a fair value method in accordance with Topic 820, Fair Value Measurement; clarification that if an observable transaction occurs for such securities, the adjustment is as of the observable transaction date; clarification that the prospective transition approach for equity securities without a readily determinable fair value is meant only for instances in which the practical expedient is elected; and various other clarifications. ASU No. 2018-03 is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years beginning after June 15, 2018. Adoption is not expected to have a material impact on the Company's consolidated financial statements. ASU No. 2017-08. In March 2017, the FASB issued ASU No. 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities . The amendments in this update require the premium on callable debt securities to be amortized to the earliest call date rather than the maturity date; however, securities held at a discount continue to be amortized to maturity. The amendments apply only to debt securities purchased at a premium that are callable at fixed prices and on preset dates. The amendments more closely align interest income recorded on debt securities held at a premium or discount with the economics of the underlying instrument. ASU No. 2017-08 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted, and is to be applied using the modified retrospective method. ASU No. 2017-08 is not expected to have a significant effect on the Company's consolidated financial statements. ASU No 2017-04. In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The ASU simplifies the subsequent measurement of goodwill impairment by eliminating the requirement to calculate the implied fair value of goodwill (i.e., the current Step 2 of the goodwill impairment test) to measure a goodwill impairment charge. As amended, the goodwill impairment test will consist of one step comparing the fair value of a reporting unit with its carrying amount. A goodwill impairment charge should be recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value. The ASU is effective for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim and annual goodwill impairment testing dates after January 1, 2017. The adoption of this pronouncement is not expected to have an effect on the Company's consolidated financial statements. ASU No. 2016-13. In June 2016, the FASB issued No. ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which requires credit losses on most financial assets measured at amortized cost and certain other instruments to be measured using an expected credit loss model (referred to as the current expected credit loss (“CECL”) model. Under this model, entities will estimate credit losses over the entire contractual term of the instrument from the date of initial recognition of that instrument. Current US GAAP is based on an incurred loss model that delays recognition of credit losses until it is probable the loss has been incurred. Accordingly, it is anticipated that credit losses will be recognized earlier under the CECL model than under the incurred loss model. ASU No. 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted for interim and annual reporting periods beginning after December 15, 2018. The Company continues to evaluate the potential effect of adoption of this pronouncement on its consolidated financial statements by identifying key interpretive issues, assessing its processes, portfolio segmentation, model development, and identifying the data and system requirements against the guidance to determine what modifications may be required. As part of the evaluation process, the Company has also established a CECL working group that includes individuals from various functional areas to assess processes and has selected a third-party vendor to assist in the application of the ASU No. 2016-13. The adoption of ASU No. 2016-13 may result in an increase in the allowance for loan losses as a result of changing from an incurred loss model, which encompasses allowances for current known and inherent losses within the portfolio, to an expected losses model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. The extent of the effect is indeterminable at this time as it will depend upon the nature and characteristics of the Company's loan portfolio at the adoption date, as well as economic conditions and forecasts at that date. ASU No. 2016-02. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) , which is intended to increase transparency and comparability of accounting for lease transactions. The ASU will require all leases to be recognized on the balance sheet as lease assets and lease liabilities and will require both quantitative and qualitative disclosures regarding key information about leasing arrangements. Lessor accounting is largely unchanged. The guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within that reporting period. The Company is currently evaluating the potential effect of adoption of this pronouncement on its consolidated financial statements. The Company has several lease agreements, such as branch locations, which are currently considered operating leases, and therefore, not recognized on the Company’s consolidated statements of condition. The guidance will require these lease agreements to be recognized on the consolidated balance sheets as a right-of-use asset and a corresponding lease liability. Therefore, the Company’s preliminary evaluation indicates the provisions of ASU No. 2016-02 are expected to impact the Company’s consolidated balance sheets; the extent of such impact is under evaluation. The Company does not expect the guidance to have a material impact on its results of operations. The Company is nearing completion of identifying a complete inventory of arrangements containing a lease and accumulating the data necessary to apply the amended guidance. The Company has contracted with a third-party software vendor to aid in the transition to the new leasing guidance implementation.

Debt Securities Available-for21

Debt Securities Available-for-Sale (Tables)	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Comparative Summary of Mortgage-Backed Securities and Other Securities Available-for-Sale	The following is a comparative summary of mortgage-backed and other debt securities available-for-sale at June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 Gross Gross Estimated Amortized unrealized unrealized fair cost gains losses value Mortgage-backed securities: Pass-through certificates: Government sponsored enterprises (GSE) $ 247,743 $ 581 $ 5,238 $ 243,086 Real estate mortgage investment conduits (REMICs): GSE 283,386 95 10,760 272,721 Non-GSE 76 — 1 75 531,205 676 15,999 515,882 Other debt securities: Municipal bonds 276 3 — 279 Corporate bonds 109,801 215 898 109,118 110,077 218 898 109,397 Total debt securities available-for-sale $ 641,282 $ 894 $ 16,897 $ 625,279 December 31, 2017 Gross Gross Estimated Amortized unrealized unrealized fair cost gains losses value Mortgage-backed securities: Pass-through certificates: GSE $ 179,320 $ 1,429 $ 2,454 $ 178,295 REMICs: GSE 273,501 287 6,859 266,929 Non-GSE 80 — 1 79 452,901 1,716 9,314 445,303 Other debt securities: Municipal bonds 343 6 — 349 Corporate bonds 67,927 401 198 68,130 68,270 407 198 68,479 Total debt securities available-for-sale $ 521,171 $ 2,123 $ 9,512 $ 513,782
Summary of Expected Maturity Distribution of Debt Securities Available-for-Sale, Other Than Mortgage-Backed Securities	The following is a summary of the expected maturity distribution of debt securities available-for-sale, other than mortgage-backed securities, at June 30, 2018 (in thousands): Available-for-sale Amortized cost Estimated fair value Due after one year through five years $ 100,189 $ 99,505 Due after five years through ten years 9,888 9,892 $ 110,077 $ 109,397
Gross Unrealized Losses on Mortgage-Backed Securities	Gross unrealized losses on mortgage-backed and other debt securities available-for-sale, and the estimated fair value of the related securities, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at June 30, 2018 , and December 31, 2017 , were as follows (in thousands): June 30, 2018 Less than 12 months 12 months or more Total Unrealized Estimated Unrealized Estimated Unrealized Estimated losses fair value losses fair value losses fair value Mortgage-backed securities: Pass-through certificates: GSE $ 1,538 $ 104,219 $ 3,700 $ 74,599 $ 5,238 $ 178,818 REMICs: GSE 2,720 120,720 8,040 120,653 10,760 241,373 Non-GSE — — 1 75 1 75 Other debt securities: Corporate bonds 514 75,010 384 14,798 898 89,808 Total $ 4,772 $ 299,949 $ 12,125 $ 210,125 $ 16,897 $ 510,074 December 31, 2017 Less than 12 months 12 months or more Total Unrealized Estimated Unrealized Estimated Unrealized Estimated losses fair value losses fair value losses fair value Mortgage-backed securities: Pass-through certificates: GSE $ 439 $ 48,931 $ 2,015 $ 76,113 $ 2,454 $ 125,044 REMICs: GSE 933 103,644 5,926 139,830 6,859 243,474 Non-GSE — — 1 79 1 79 Other debt securities: Corporate bonds 61 11,006 137 15,084 198 26,090 Total $ 1,433 $ 163,581 $ 8,079 $ 231,106 $ 9,512 $ 394,687

Debt Securities Held-to-Matur22

Debt Securities Held-to-Maturity (Tables)	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Securities Held-to-Maturity	The following is a summary of debt securities held-to-maturity at June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Mortgage-backed securities: Pass-through certificates: GSEs $ 9,819 $ — $ 290 $ 9,529 Total securities held-to-maturity $ 9,819 $ — $ 290 $ 9,529 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Mortgage-backed securities: Pass-through certificates: GSEs $ 9,931 $ 17 $ 56 $ 9,892 Total securities held-to-maturity $ 9,931 $ 17 $ 56 $ 9,892
Held-to-maturity Securities	Gross unrealized losses on mortgage-backed securities held-to-maturity, and the estimated fair value of the related securities, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at June 30, 2018 and December 31, 2017 , were as follows (in thousands): June 30, 2018 Less than 12 months 12 months or more Total Unrealized losses Estimated fair value Unrealized losses Estimated fair value Unrealized losses Estimated fair value Mortgage-backed securities: Pass-through certificates: GSEs $ 145 $ 5,930 $ 145 $ 3,599 $ 290 $ 9,529 Total securities held-to-maturity $ 145 $ 5,930 $ 145 $ 3,599 $ 290 $ 9,529 December 31, 2017 Less than 12 months 12 months or more Total Unrealized losses Estimated fair value Unrealized losses Estimated fair value Unrealized losses Estimated fair value Mortgage-backed securities: Pass-through certificates: GSEs $ 7 $ 3,922 $ 49 $ 3,735 $ 56 $ 7,657 Total securities held-to-maturity $ 7 $ 3,922 $ 49 $ 3,735 $ 56 $ 7,657

Loans (Tables)

Loans (Tables)	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Net Loans Held-for-Investment	Net loans held-for-investment are as follows (in thousands): June 30, December 31, 2018 2017 Real estate loans: Multifamily $ 1,800,421 $ 1,735,712 Commercial mortgage 499,518 445,225 One-to-four family residential mortgage 100,257 100,942 Home equity and lines of credit 72,728 66,254 Construction and land 26,983 34,545 Total real estate loans 2,499,907 2,382,678 Commercial and industrial loans 39,682 34,828 Other loans 1,532 1,430 Total commercial and industrial and other loans 41,214 36,258 Deferred loan cost, net 6,799 6,339 Originated loans held-for-investment, net 2,547,920 2,425,275 PCI Loans 21,331 22,741 Loans acquired: One-to-four family residential mortgage 265,709 275,053 Multifamily 180,951 199,149 Commercial mortgage 155,250 163,962 Home equity and lines of credit 19,009 20,455 Construction and land 14,999 17,201 Total acquired real estate loans 635,918 675,820 Commercial and industrial loans 14,939 16,946 Other loans 18 37 Total loans acquired, net 650,875 692,803 Loans held-for-investment, net 3,220,126 3,140,819 Allowance for loan losses (26,882 ) (26,160 ) Net loans held-for-investment $ 3,193,244 $ 3,114,659
Summary of Accretable Yield	The following table details the accretion of interest income for PCI loans for the three and six months ended June 30, 2018 and June 30, 2017 (in thousands): At or for the three months ended June 30, At or for the six months ended June 30, 2018 2017 2018 2017 Balance at the beginning of period $ 23,412 $ 22,763 $ 24,502 $ 24,215 Accretion into interest income (1,026 ) (1,321 ) (2,116 ) (2,773 ) Balance at end of period $ 22,386 $ 21,442 $ 22,386 $ 21,442
Allowance For Loan Losses And Loans Receivable By Portfolio Segment Table	The following tables set forth activity in our allowance for loan losses, by loan type, as of and for the three and six months ended June 30, 2018 , and June 30, 2017 (in thousands): Three Months Ended June 30, 2018 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Unallocated Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Beginning balance $ 5,213 $ 455 $ 463 $ 17,412 $ 225 $ 1,337 $ 113 $ — $ 25,218 $ 951 $ 3 $ 26,172 Charge-offs — — — — — — — — — — — — Recoveries 12 — — 26 — — — — 38 — 2 40 Provisions (credit) 493 (71 ) (25 ) 165 54 65 (6 ) — 675 — (5 ) 670 Ending balance $ 5,718 $ 384 $ 438 $ 17,603 $ 279 $ 1,402 $ 107 $ — $ 25,931 $ 951 $ — $ 26,882 Three Months Ended June 30, 2017 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Unallocated Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Beginning balance $ 5,231 $ 649 $ 165 $ 16,184 $ 492 $ 1,561 $ 72 $ — $ 24,354 $ 896 $ 34 $ 25,284 Charge-offs — — — (178 ) (104 ) — — — (282 ) — (8 ) (290 ) Recoveries 17 — — — 64 17 — — 98 — 2 100 Provisions (credit) (12 ) (99 ) 64 630 (89 ) (46 ) 25 — 473 — 38 511 Ending balance $ 5,236 $ 550 $ 229 $ 16,636 $ 363 $ 1,532 $ 97 $ — $ 24,643 $ 896 $ 66 $ 25,605 Six Months Ended June 30, 2018 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Unallocated Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Beginning balance $ 5,196 $ 503 $ 610 $ 17,374 $ 122 $ 1,273 $ 94 $ — $ 25,172 $ 951 $ 37 $ 26,160 Charge-offs (3 ) — — — (60 ) — — — (63 ) — (1 ) (64 ) Recoveries 28 — — 26 — 20 — — 74 — 8 82 Provisions/(credit) 497 (119 ) (172 ) 203 217 109 13 — 748 — (44 ) 704 Ending balance $ 5,718 $ 384 $ 438 $ 17,603 $ 279 $ 1,402 $ 107 $ — $ 25,931 $ 951 $ — $ 26,882 Six Months Ended June 30, 2017 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Unallocated Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Beginning balance $ 5,432 $ 664 $ 172 $ 14,952 $ 588 $ 1,720 $ 96 $ — $ 23,624 $ 896 $ 75 $ 24,595 Charge-offs (4 ) — — (178 ) (104 ) — — — (286 ) — (31 ) (317 ) Recoveries 34 — — 278 64 64 — — 440 — 4 444 Provisions/(credit) (226 ) (114 ) 57 1,584 (185 ) (252 ) 1 — 865 — 18 883 Ending balance $ 5,236 $ 550 $ 229 $ 16,636 $ 363 $ 1,532 $ 97 $ — $ 24,643 $ 896 $ 66 $ 25,605 The following tables detail the amount of loans receivable held-for-investment, net of deferred loan fees and costs, that are evaluated individually, and collectively, for impairment, and the related portion of the allowance for loan losses that is allocated to each loan portfolio segment, at June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Ending balance: individually evaluated for impairment $ 13 $ 18 $ — $ — $ 10 $ 2 $ — $ 43 $ — $ — $ 43 Ending balance: collectively evaluated for impairment $ 5,705 $ 366 $ 438 $ 17,603 $ 269 $ 1,400 $ 107 $ 25,888 $ 951 $ — $ 26,839 Loans, net: Ending balance $ 500,051 $ 101,354 $ 27,048 $ 1,803,834 $ 74,324 $ 39,776 $ 1,533 $ 2,547,920 $ 21,331 $ 650,875 $ 3,220,126 Ending balance: individually evaluated for impairment $ 15,707 $ 1,947 $ — $ 1,275 $ 65 $ 152 $ — $ 19,146 $ — $ 944 $ 20,090 Ending balance: collectively evaluated for impairment $ 484,344 $ 99,407 $ 27,048 $ 1,802,559 $ 74,259 $ 39,624 $ 1,533 $ 2,528,774 $ 21,331 $ 649,931 $ 3,200,036 December 31, 2017 Real Estate Commercial One-to-Four Family Construction and Land Multifamily Home Equity and Lines of Credit Commercial and Industrial Other Originated Loans Total Purchased Credit-Impaired Acquired Loans Total Allowance for loan losses: Ending balance: individually evaluated for impairment $ — $ 38 $ — $ — $ 4 $ 3 $ — $ 45 $ — $ 37 $ 82 Ending balance: collectively evaluated for impairment $ 5,196 $ 465 $ 610 $ 17,374 $ 118 $ 1,270 $ 94 $ 25,127 $ 951 $ — $ 26,078 Loans, net: Ending balance $ 445,781 $ 101,650 $ 34,620 $ 1,739,220 $ 67,679 $ 34,893 $ 1,432 $ 2,425,275 $ 22,741 $ 692,803 $ 3,140,819 Ending balance: individually evaluated for impairment $ 16,008 $ 1,996 $ — $ 1,310 $ 69 $ 159 $ — $ 19,542 $ — $ 1,543 $ 21,085 Ending balance: collectively evaluated for impairment $ 429,773 $ 99,654 $ 34,620 $ 1,737,910 $ 67,610 $ 34,734 $ 1,432 $ 2,405,733 $ 22,741 $ 691,260 $ 3,119,734
Investment of Originated Loans Held-for-Investment, Net of Deferred Fees and Costs, by Loan Type and Credit Quality Indicator	The following tables detail the recorded investment of originated loans held-for-investment, net of deferred fees and costs, by loan type and credit quality indicator at June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 Real Estate Multifamily Commercial One-to-Four Family Construction and Land Home Equity and Lines of Credit Commercial and Industrial Other Total < 35% LTV => 35% LTV < 35% LTV => 35% LTV < 60% LTV => 60% LTV Internal Risk Rating Pass $ 139,016 $ 1,662,881 $ 71,628 $ 416,297 $ 59,099 $ 39,571 $ 27,048 $ 74,079 $ 39,064 $ 1,533 $ 2,530,216 Special Mention — 626 402 1,158 672 — — 27 538 — 3,423 Substandard — 1,311 — 10,566 1,434 578 — 218 174 — 14,281 Originated loans held-for-investment, net $ 139,016 $ 1,664,818 $ 72,030 $ 428,021 $ 61,205 $ 40,149 $ 27,048 $ 74,324 $ 39,776 $ 1,533 $ 2,547,920 December 31, 2017 Real Estate Multifamily Commercial One-to-Four Family Construction and Land Home Equity and Lines of Credit Commercial and Industrial Other Total < 35% LTV => 35% LTV < 35% LTV => 35% LTV < 60% LTV => 60% LTV Internal Risk Rating Pass $ 131,792 $ 1,603,947 $ 84,620 $ 346,857 $ 60,400 $ 38,504 $ 34,620 $ 67,426 $ 34,141 $ 1,432 $ 2,403,739 Special Mention — 1,897 410 2,170 683 — — 28 571 — 5,759 Substandard — 1,584 — 11,724 1,470 593 — 225 181 — 15,777 Originated loans held-for-investment, net $ 131,792 $ 1,607,428 $ 85,030 $ 360,751 $ 62,553 $ 39,097 $ 34,620 $ 67,679 $ 34,893 $ 1,432 $ 2,425,275
Estimated Expected Future Cash Flows of Each PCI Loan Pool	The following tables set forth the detail, and delinquency status, of non-performing loans (non-accrual loans and loans past due 90 days or more and still accruing), net of deferred fees and costs, at June 30, 2018 , and December 31, 2017 , excluding loans held-for-sale and PCI loans which have been segregated into pools. For PCI loans, each loan pool is accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows (in thousands): June 30, 2018 Total Non-Performing Loans Non-Accruing Loans 0-29 Days Past Due 30-89 Days Past Due 90 Days or More Past Due Total 90 Days or More Past Due and Accruing Total Non-Performing Loans Loans held-for-investment: Real estate loans: Commercial LTV => 35% Substandard $ — $ 719 $ 2,304 $ 3,023 $ — $ 3,023 Total commercial — 719 2,304 3,023 — 3,023 One-to-four family residential LTV < 60% Substandard — 442 77 519 — 519 Total — 442 77 519 — 519 LTV => 60% Substandard — — 36 36 — 36 Total one-to-four family residential — 442 113 555 — 555 Home equity and lines of credit Substandard 77 — — 77 — 77 Total home equity and lines of credit 77 — — 77 — 77 Commercial and industrial loans Substandard — — 72 72 — 72 Total commercial and industrial loans — — 72 72 — 72 Total non-performing loans held-for-investment, originated 77 1,161 2,489 3,727 — 3,727 Loans acquired: Real estate loans: Commercial LTV < 35% Substandard — — 291 291 — 291 LTV => 35% Substandard 519 250 537 1,306 — 1,306 Total commercial 519 250 828 1,597 — 1,597 One-to-four family residential LTV < 60% Substandard — 200 85 285 — 285 LTV => 60% Substandard — — 124 124 — 124 Total one-to-four family residential — 200 209 409 — 409 Multifamily LTV < 35% Substandard — — 152 152 — 152 LTV => 35% Substandard — 416 — 416 — 416 Total multifamily — 416 152 568 — 568 Home equity and lines of credit Substandard — 28 49 77 — 77 Total home equity and lines of credit — 28 49 77 — 77 Total non-performing loans acquired 519 894 1,238 2,651 — 2,651 Total non-performing loans $ 596 $ 2,055 $ 3,727 $ 6,378 $ — $ 6,378 December 31, 2017 Total Non-Performing Loans Non-Accruing Loans 0-29 Days Past Due 30-89 Days Past Due 90 Days or More Past Due Total 90 Days or More Past Due and Accruing Total Non-Performing Loans Loans held-for-investment: Real estate loans: Commercial LTV => 35% Substandard $ 432 $ 314 $ 2,305 $ 3,051 $ — $ 3,051 Total commercial 432 314 2,305 3,051 — 3,051 One-to-four family residential LTV < 60% Substandard — 206 328 534 — 534 LTV => 60% Substandard — — 39 39 — 39 Total one-to-four family residential — 206 367 573 — 573 Home equity and lines of credit Substandard 79 — — 79 — 79 Total home equity and lines of credit 79 — — 79 — 79 Commercial and industrial loans Substandard — — 72 72 — 72 Total commercial and industrial loans — — 72 72 — 72 Total non-performing loans held-for-investment, originated 511 520 2,744 3,775 — 3,775 Loans acquired: Real estate loans: Commercial LTV < 35% Substandard — — 205 205 — 205 LTV => 35% Substandard — 773 58 831 — 831 Total commercial — 773 263 1,036 — 1,036 One-to-four family residential LTV < 60% Substandard — 201 — 201 27 228 Total one-to-four family residential — 201 — 201 27 228 Multifamily LTV => 35% Substandard — 417 — 417 — 417 Total multifamily — 417 — 417 — 417 Home equity and lines of credit Substandard — 28 49 77 — 77 Total home equity and lines of credit — 28 49 77 — 77 Commercial and industrial loans Substandard — — 2 2 — 2 Total commercial and industrial loans — — 2 2 — 2 Other loans - Pass — — — — 1 1 Total non-performing loans acquired — 1,419 314 1,733 28 1,761 Total non-performing loans $ 511 $ 1,939 $ 3,058 $ 5,508 $ 28 $ 5,536
Detail and Delinquency Status of Originated Loans Held-for-Investment, Net of Deferred Fees and Costs, by Performing and Non-Performing Loans	The following tables set forth the detail and delinquency status of originated and acquired loans held-for-investment, net of deferred fees and costs, by performing and non-performing loans at June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 Performing (Accruing) Loans 0-29 Days Past Due 30-89 Days Past Due Total Non-Performing Loans Total Loans Receivable, net Loans held-for-investment: Real estate loans: Commercial LTV < 35% Pass $ 71,628 $ — $ 71,628 $ — $ 71,628 Special Mention — 402 402 — 402 Total 71,628 402 72,030 — 72,030 LTV => 35% Pass 414,716 1,581 416,297 — 416,297 Special Mention 1,158 — 1,158 — 1,158 Substandard 7,543 — 7,543 3,023 10,566 Total 423,417 1,581 424,998 3,023 428,021 Total commercial 495,045 1,983 497,028 3,023 500,051 One-to-four family residential LTV < 60% Pass 56,690 2,409 59,099 — 59,099 Special Mention — 672 672 — 672 Substandard 915 — 915 519 1,434 Total 57,605 3,081 60,686 519 61,205 LTV => 60% Pass 39,335 236 39,571 — 39,571 Substandard 319 223 542 36 578 Total 39,654 459 40,113 36 40,149 Total one-to-four family residential 97,259 3,540 100,799 555 101,354 Construction and land Pass 27,046 2 27,048 — 27,048 Total construction and land 27,046 2 27,048 — 27,048 Multifamily LTV < 35% Pass 138,715 301 139,016 — 139,016 Total 138,715 301 139,016 — 139,016 LTV => 35% Pass 1,662,881 — 1,662,881 — 1,662,881 Special Mention 626 — 626 — 626 Substandard 81 1,230 1,311 — 1,311 Total 1,663,588 1,230 1,664,818 — 1,664,818 Total multifamily 1,802,303 1,531 1,803,834 — 1,803,834 Home equity and lines of credit Pass 73,983 96 74,079 — 74,079 Special Mention 27 — 27 — 27 Substandard 141 — 141 77 218 Total home equity and lines of credit 74,151 96 74,247 77 74,324 Commercial and industrial Pass 39,057 7 39,064 — 39,064 Special Mention 501 37 538 — 538 Substandard 102 — 102 72 174 Total commercial and industrial 39,660 44 39,704 72 39,776 June 30, 2018 Performing (Accruing) Loans (Continued) 0-29 Days Past Due 30-89 Days Past Due Total Non-Performing Loans Total Loans Receivable, net Other loans - Pass 1,524 9 1,533 — 1,533 Total originated loans held-for-investment 2,536,988 7,205 2,544,193 3,727 2,547,920 Acquired loans: Real estate loans: One-to-four family residential LTV < 60% Pass 240,125 2,069 242,194 — 242,194 Special Mention 429 — 429 — 429 Substandard 64 13 77 285 362 Total 240,618 2,082 242,700 285 242,985 LTV => 60% Pass 22,068 532 22,600 — 22,600 Substandard — — — 124 124 Total 22,068 532 22,600 124 22,724 Total one-to-four family residential 262,686 2,614 265,300 409 265,709 Commercial LTV < 35% Pass 52,486 — 52,486 — 52,486 Special Mention 88 70 158 — 158 Substandard — 84 84 291 375 Total 52,574 154 52,728 291 53,019 LTV => 35% Pass 92,790 3,945 96,735 — 96,735 Special Mention — 131 131 — 131 Substandard 3,639 420 4,059 1,306 5,365 Total 96,429 4,496 100,925 1,306 102,231 Total commercial 149,003 4,650 153,653 1,597 155,250 Construction and land Pass 14,999 — 14,999 — 14,999 Total construction and land 14,999 — 14,999 — 14,999 Multifamily LTV < 35% Pass 172,481 — 172,481 — 172,481 Special Mention — 65 65 — 65 Substandard — — — 152 152 Total 172,481 65 172,546 152 172,698 LTV => 35% Pass 7,837 — 7,837 — 7,837 Substandard — — — 416 416 Total 7,837 — 7,837 416 8,253 Total multifamily 180,318 65 180,383 568 180,951 Home equity and lines of credit Pass 18,832 18 18,850 — 18,850 Substandard 82 — 82 77 159 Total home equity and lines of credit 18,914 18 18,932 77 19,009 Commercial and industrial Pass 14,939 — 14,939 — 14,939 Total commercial and industrial 14,939 — 14,939 — 14,939 Other loans - Pass 18 — 18 — 18 Total loans acquired 640,877 7,347 648,224 2,651 650,875 $ 3,177,865 $ 14,552 $ 3,192,417 $ 6,378 $ 3,198,795 December 31, 2017 Performing (Accruing) Loans 0-29 Days Past Due 30-89 Days Past Due Total Non-Performing Loans Total Loans Receivable, net Loans held-for-investment: Real estate loans: Commercial LTV < 35% Pass $ 84,620 $ — $ 84,620 — $ 84,620 Special Mention — 410 410 — 410 Total 84,620 410 85,030 — 85,030 LTV => 35% Pass 346,229 628 346,857 — 346,857 Special Mention 832 1,338 2,170 — 2,170 Substandard 7,675 998 8,673 3,051 11,724 Total 354,736 2,964 357,700 3,051 360,751 Total commercial 439,356 3,374 442,730 3,051 445,781 One-to-four family residential LTV < 60% Pass 57,907 2,493 60,400 — 60,400 Special Mention — 683 683 — 683 Substandard 322 614 936 534 1,470 Total 58,229 3,790 62,019 534 62,553 LTV => 60% Pass 38,504 — 38,504 — 38,504 Substandard 554 — 554 39 593 Total 39,058 — 39,058 39 39,097 Total one-to-four family residential 97,287 3,790 101,077 573 101,650 Construction and land Pass 34,614 6 34,620 — 34,620 Total construction and land 34,614 6 34,620 — 34,620 Multifamily LTV < 35% Pass 131,488 304 131,792 — 131,792 Total 131,488 304 131,792 — 131,792 LTV => 35% Pass 1,603,714 233 1,603,947 — 1,603,947 Special Mention 638 1,259 1,897 — 1,897 Substandard 83 1,501 1,584 — 1,584 Total 1,604,435 2,993 1,607,428 — 1,607,428 Total multifamily 1,735,923 3,297 1,739,220 — 1,739,220 Home equity and lines of credit Pass 67,426 — 67,426 — 67,426 Special Mention 28 — 28 — 28 Substandard 146 — 146 79 225 Total home equity and lines of credit 67,600 — 67,600 79 67,679 Commercial and industrial loans Pass 34,003 138 34,141 — 34,141 Special Mention 547 24 571 — 571 Substandard 109 — 109 72 181 Total commercial and industrial loans 34,659 162 34,821 72 34,893 Other loans - Pass 1,403 29 1,432 — 1,432 Total originated loans held-for-investment $ 2,410,842 $ 10,658 $ 2,421,500 $ 3,775 $ 2,425,275 December 31, 2017 Performing (Accruing) Loans 0-29 Days Past Due 30-89 Days Past Due Total Non-Performing Loans Total Loans Receivable, net Loans Acquired Real estate loans: One-to-four family residential LTV < 60% Pass 250,149 224 250,373 — 250,373 Special Mention 455 — 455 — 455 Substandard 417 150 567 228 795 Total 251,021 374 251,395 228 251,623 LTV => 60% Pass 23,295 — 23,295 — 23,295 Substandard 135 — 135 — 135 Total 23,430 — 23,430 — 23,430 Total one-to-four family residential 274,451 374 274,825 228 275,053 Commercial LTV < 35% Pass 50,035 70 50,105 — 50,105 Special Mention 91 — 91 — 91 Substandard — 181 181 205 386 Total 50,126 251 50,377 205 50,582 LTV => 35% Pass 108,125 158 108,283 — 108,283 Special Mention — 133 133 — 133 Substandard 3,703 430 4,133 831 4,964 Total 111,828 721 112,549 831 113,380 Total commercial 161,954 972 162,926 1,036 163,962 Construction and land Pass 17,201 — 17,201 — 17,201 Total construction and land 17,201 — 17,201 — 17,201 Multifamily LTV < 35% Pass 189,551 — 189,551 — 189,551 Special Mention 78 — 78 — 78 Substandard 153 — 153 — 153 Total 189,782 — 189,782 — 189,782 LTV => 35% Pass 8,950 — 8,950 — 8,950 Substandard — — — 417 417 Total 8,950 — 8,950 417 9,367 Total multifamily 198,732 — 198,732 417 199,149 Home equity and lines of credit Pass 20,291 — 20,291 — 20,291 Substandard 87 — 87 77 164 Total home equity and lines of credit 20,378 — 20,378 77 20,455 Commercial and industrial loans Pass 16,904 40 16,944 — 16,944 Substandard — — — 2 2 Total commercial and industrial loans 16,904 40 16,944 2 16,946 Other 36 — 36 1 37 Total loans acquired 689,656 1,386 691,042 1,761 692,803 $ 3,100,498 $ 12,044 $ 3,112,542 $ 5,536 $ 3,118,078
Summary of Impaired Loans	The following table summarizes originated and acquired impaired loans as of June 30, 2018 , and December 31, 2017 (in thousands): June 30, 2018 December 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance With No Allowance Recorded: Real estate loans: Commercial LTV < 35% Substandard $ — $ 139 $ — $ — $ 139 $ — LTV => 35% Pass 4,632 5,519 — 6,263 7,150 — Substandard 9,608 10,423 — 9,745 10,560 — One-to-four family residential LTV < 60% Pass 1,571 1,640 — 1,189 1,254 — Substandard 241 241 — 251 251 — LTV => 60% Pass 132 159 — 136 161 — Substandard 124 276 — 135 286 — Multifamily LTV < 35% Substandard 152 152 — 153 153 — LTV => 35% Pass 45 515 — 1,309 1,780 — Substandard 1,230 1,230 — — — — Home equity and lines of credit Pass 31 31 — 33 33 — Commercial and industrial loans Substandard 129 129 — 135 135 — With a Related Allowance Recorded: Real estate loans: Commercial LTV => 35% Pass 1,467 1,467 (13 ) — — — One-to-four family residential LTV < 60% Pass — — — 411 411 (7 ) Substandard 671 671 (18 ) 997 997 (49 ) LTV => 60% Pass — — — 268 268 (19 ) Home equity and lines of credit Substandard 34 34 (10 ) 36 36 (4 ) Commercial and industrial loans Special Mention 23 23 (2 ) 24 24 (3 ) Total: Real estate loans Commercial 15,707 17,548 (13 ) 16,008 17,849 — One-to-four family residential 2,739 2,987 (18 ) 3,387 3,628 (75 ) Multifamily 1,427 1,897 — 1,462 1,933 — Home equity and lines of credit 65 65 (10 ) 69 69 (4 ) Commercial and industrial loans 152 152 (2 ) 159 159 (3 ) $ 20,090 $ 22,649 $ (43 ) $ 21,085 $ 23,638 $ (82 ) Three Months Ended Six Months Ended June 30, 2018 June 30, 2017 June 30, 2018 June 30, 2017 Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income With No Allowance Recorded: Real estate loans: Commercial LTV < 35% Substandard $ — $ — $ — $ 16 $ — $ — $ — $ 22 LTV => 35% Pass 4,664 65 5,836 68 5,197 129 5,194 132 Substandard 9,650 75 12,557 129 9,681 150 13,298 256 One-to-four family residential LTV < 60% Pass 1,374 13 622 8 1,312 27 626 15 Substandard 246 4 585 6 248 4 451 12 LTV => 60% Pass 267 1 — — 223 5 — — Substandard 129 — 278 5 131 3 392 10 Multifamily LTV < 35% Substandard 152 1 154 2 152 2 155 3 LTV => 35% Pass 46 4 58 4 467 8 60 8 Substandard 1,237 16 — — 825 28 — — Home equity and lines of credit Pass 31 — 37 — 32 1 38 1 Commercial and industrial loans Substandard 131 — 143 — 132 — 120 — With a Related Allowance Recorded: Real estate loans: Commercial LTV => 35% Pass 1,476 20 — — 984 40 — — Substandard — — — — — — 673 — One-to-four family residential LTV < 60% Pass 204 2 — — 273 3 — — Substandard 674 4 1,398 9 782 8 1,439 19 LTV => 60% Pass — — 272 6 89 — 273 10 Substandard — — 189 — — — 253 — Multifamily LTV => 35% Pass — — 1,289 8 — — 1,296 20 Three Months Ended Six Months Ended June 30, 2018 June 30, 2017 June 30, 2018 June 30, 2017 Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income Substandard — — 450 — — — 300 — Home equity and lines of credit Pass — — 254 2 — — 255 3 Substandard 35 — 38 — 35 1 38 1 Commercial and industrial loans Special Mention 23 — 26 — 23 1 26 — Total: Real estate loans Commercial 15,790 160 18,393 213 15,862 319 19,165 410 One-to-four family residential 2,894 24 3,344 34 3,058 50 3,434 66 Multifamily 1,435 21 1,951 14 1,444 38 1,811 31 Home equity and lines of credit 66 — 329 2 67 2 331 5 Commercial and industrial loans 154 — 169 — 155 1 146 — $ 20,339 $ 205 $ 24,186 $ 263 $ 20,586 $ 410 $ 24,887 $ 512

Deposits (Tables)

Deposits (Tables)	6 Months Ended
	Jun. 30, 2018
Banking and Thrift [Abstract]
Deposit Account Balances	Deposits account balances are summarized as follows (in thousands): June 30, 2018 December 31, 2017 Non-interest-bearing demand $ 411,427 $ 407,267 Interest-bearing negotiable orders of withdrawal (NOW) 421,167 465,140 Savings and money market 1,162,218 1,225,643 Certificates of deposit 972,469 738,929 Total deposits $ 2,967,281 $ 2,836,979
Interest Expense on Deposits	Interest expense on deposit accounts is summarized for the periods indicated (in thousands): Three Months Ended Six Months Ended June 30, June 30, 2018 2017 2018 2017 Negotiable orders of withdrawal, savings, and money market $ 2,312 $ 2,079 $ 4,455 $ 4,109 Certificates of deposit 3,738 1,820 6,806 3,410 Total interest expense on deposit accounts $ 6,050 $ 3,899 $ 11,261 $ 7,519

Equity Incentive Plan (Tables)

Equity Incentive Plan (Tables)	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Options Outstanding	The following table is a summary of the Company’s stock options outstanding as of June 30, 2018 , and changes therein during the six months then ended. Number of Stock Options Weighted Average Grant Date Fair Value Weighted Average Exercise Price Weighted Average Contractual Life (years) Outstanding - December 31, 2017 4,620,687 $ 3.51 $ 11.82 5.17 Forfeited (19,378 ) 2.99 9.84 — Exercised (1,105,157 ) 2.48 7.69 — Outstanding - June 30, 2018 3,496,152 3.83 13.14 5.81 Exercisable - June 30, 2018 2,661,611 3.77 12.77 5.52
Status of the Company's Restricted Share Awards	The following is a summary of the status of the Company’s restricted stock awards as of June 30, 2018 , and changes therein during the six months then ended. Number of Shares Awarded Weighted Average Grant Date Fair Value Non-vested at December 31, 2017 585,895 $ 14.05 Vested (250,013 ) 13.73 Forfeited (1,760 ) 13.13 Non-vested at June 30, 2018 334,122 $ 14.29

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Significant Fair Value of Assets and Liabilities Measured on Recurring and Non Recurring Basis	The fair values shown as of December 31, 2017, use an “entry price” approach. For further details on ASU 2016-01 see Note 12 - “ Recently Issued and Adopted Accounting Pronouncements. ” Fair Value Measurements at June 30, 2018 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (in thousands) Measured on a recurring basis: Assets: Investment securities: Debt securities available-for-sale: Mortgage-backed securities GSE: Pass-through certificates $ 243,086 $ — $ 243,086 $ — GSE: REMICs 272,721 — 272,721 — Non-GSE 75 — 75 — 515,882 — 515,882 — Other debt securities Municipal bonds 279 — 279 — Corporate bonds 109,118 — 109,118 — Total debt securities available-for-sale 109,397 — 109,397 — Trading securities 10,167 10,167 — — Equity securities 272 272 — — Total $ 635,718 $ 10,439 $ 625,279 $ — Measured on a non-recurring basis: Assets: Impaired loans: Real estate loans: Commercial real estate $ 5,943 $ — $ — $ 5,943 One-to-four family residential mortgage 777 — — 777 Multifamily 45 — — 45 Home equity and lines of credit 24 — — 24 Total impaired real estate loans 6,789 — — 6,789 Commercial and industrial loans 20 — — 20 Other real estate owned 850 — — 850 Total $ 7,659 $ — $ — $ 7,659 Fair Value Measurements at December 31, 2017 Using: Carrying Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (in thousands) Measured on a recurring basis: Assets: Investment securities: Debt securities available-for-sale: Mortgage-backed securities GSE: Pass-through certificates $ 178,295 $ — $ 178,295 $ — GSE: REMICs 266,929 — 266,929 — Non-GSE 79 — 79 — 445,303 — 445,303 — Other debt securities Municipal bonds 349 — 349 — Corporate bonds 68,130 — 68,130 — Total debt securities available-for-sale 68,479 — 68,479 — Trading securities 9,597 9,597 — — Equity securities 323 323 — — Total $ 523,702 $ 9,920 $ 513,782 $ — Measured on a non-recurring basis: Assets: Impaired loans: Real estate loans: Commercial real estate $ 4,645 $ — $ — $ 4,645 One-to-four family residential mortgage 1,735 — — 1,735 Multifamily 51 — — 51 Home equity and lines of credit 31 — — 31 Total impaired real estate loans 6,462 — — 6,462 Commercial and industrial loans 21 — — 21 Other real estate owned 850 — — 850 Total $ 7,333 $ — $ — $ 7,333
Level 3 Assets Measured at Fair Value on a Non-Recurring Basis	The following table presents qualitative information for Level 3 assets measured at fair value on a non-recurring basis at June 30, 2018 , and December 31, 2017 (dollars in thousands): Fair Value Valuation Methodology Unobservable Inputs Range of Inputs June 30, 2018 December 31, 2017 June 30, 2018 December 31, 2017 Impaired loans $ 6,809 $ 6,483 Appraisals Discount for costs to sell 7.0% 7.0% Discount for quick sale 10.0% 10.0% Discounted cash flows Interest rates 3.13% to 6.25% 3.13% to 6.5% Other real estate owned $ 850 $ 850 Appraisals Discount for costs to sell 7.0% 7.0%
Estimated Fair Values of Significant Financial Instruments	The estimated fair value of the Company’s financial instruments at June 30, 2018 , and December 31, 2017 , is presented in the following tables (in thousands): June 30, 2018 Estimated Fair Value Carrying Value Level 1 Level 2 Level 3 Total Financial assets: Cash and cash equivalents $ 58,733 $ 58,733 $ — $ — $ 58,733 Trading securities 10,167 10,167 — — 10,167 Debt securities available-for-sale 625,279 — 625,279 — 625,279 Debt securities held-to-maturity 9,819 — 9,529 — 9,529 Equity securities (1) 272 272 — — 272 Federal Home Loan Bank of New York stock, at cost 27,718 — 27,718 — 27,718 Net loans held-for-investment 3,193,244 — — 3,225,464 3,225,464 Financial liabilities: Deposits $ 2,967,281 $ — $ 2,969,119 $ — $ 2,969,119 Borrowed funds 524,335 — 516,297 — 516,297 Advance payments by borrowers for taxes and insurance 18,009 — 18,009 — 18,009 December 31, 2017 Estimated Fair Value Carrying Value Level 1 Level 2 Level 3 Total Financial assets: Cash and cash equivalents $ 57,839 $ 57,839 $ — $ — $ 57,839 Trading securities 9,597 9,597 — — 9,597 Debt securities available-for-sale 513,782 — 513,782 — 513,782 Debt securities held-to-maturity 9,931 — 9,892 — 9,892 Equity securities (1) 323 323 — 323 Federal Home Loan Bank of New York stock, at cost 25,046 — 25,046 — 25,046 Net loans held-for-investment 3,114,659 — — 3,157,829 3,157,829 Financial liabilities: Deposits $ 2,836,979 $ — $ 2,839,666 $ — $ 2,839,666 Borrowed funds 471,549 — 466,625 — 466,625 Advance payments by borrowers for taxes and insurance 14,798 — 14,798 — 14,798 (1) Excludes $1.0 million of investments measured at net asset value at June 30, 2018, and December 31, 2017, which have not been classified in the fair value hierarchy.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share Calculations And Reconciliation	The following is a summary of the Company’s earnings per share calculations and reconciliation of basic to diluted earnings per share for the periods indicated (dollars in thousands, except per share data): Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Net income available to common stockholders $ 10,612 $ 8,410 $ 21,056 $ 18,358 Weighted average shares outstanding-basic 46,184,918 45,252,136 45,983,895 45,137,791 Effect of non-vested restricted stock and stock options outstanding 925,059 1,579,226 1,072,404 1,741,467 Weighted average shares outstanding-diluted 47,109,977 46,831,362 47,056,299 46,879,258 Earnings per share-basic $ 0.23 $ 0.19 $ 0.46 $ 0.41 Earnings per share-diluted $ 0.23 $ 0.18 $ 0.45 $ 0.39 Anti-dilutive shares 858,844 50,000 872,294 45,000

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Schedule of Non-Interest Income	The following table summarizes non-interest income for the periods indicated (in thousands): Three Months Ended Six Months Ended June 30, June 30, 2018 2017 2018 2017 Fees and service charges for customer services: Service charges $ 771 768 $ 1,612 1,640 ATM and card interchange fees 313 284 580 544 Investment fees 63 55 169 141 Total fees and service charges for customer services 1,147 1,107 2,361 2,325 Income on bank owned life insurance 914 1,010 1,868 3,468 Gains on securities transactions, net 313 256 473 664 Other 71 64 147 127 Total non-interest income $ 2,445 $ 2,437 $ 4,849 $ 6,584

Debt Securities Available-for29

Debt Securities Available-for-Sale - Comparative Summary of Mortgage-Backed Securities and Other Securities Available-for-Sale) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 641,282	$ 521,171
Gross unrealized gains	894	2,123
Gross unrealized losses	16,897	9,512
Debt securities available-for-sale	625,279	513,782
Pass-through Certificates | GSE
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	247,743	179,320
Gross unrealized gains	581	1,429
Gross unrealized losses	5,238	2,454
Debt securities available-for-sale	243,086	178,295
Real estate mortgage investment conduits (REMICs)
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	531,205	452,901
Gross unrealized gains	676	1,716
Gross unrealized losses	15,999	9,314
Debt securities available-for-sale	515,882	445,303
Real estate mortgage investment conduits (REMICs) | GSE
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	283,386	273,501
Gross unrealized gains	95	287
Gross unrealized losses	10,760	6,859
Debt securities available-for-sale	272,721	266,929
Real estate mortgage investment conduits (REMICs) | Non-GSE
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	76	80
Gross unrealized gains	0	0
Gross unrealized losses	1	1
Debt securities available-for-sale	75	79
Debt securities
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	110,077	68,270
Gross unrealized gains	218	407
Gross unrealized losses	898	198
Debt securities available-for-sale	109,397	68,479
Debt securities | Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	276	343
Gross unrealized gains	3	6
Gross unrealized losses	0	0
Debt securities available-for-sale	279	349
Debt securities | Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	109,801	67,927
Gross unrealized gains	215	401
Gross unrealized losses	898	198
Debt securities available-for-sale	$ 109,118	$ 68,130

Debt Securities Available-for30

Debt Securities Available-for-Sale - Summary of Expected Maturity Distribution of Debt Securities Available-for-Sale, Other than Mortgage-Backed Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Amortized cost
Amortized cost	$ 641,282	$ 521,171
Estimated fair value
Estimated fair value	625,279	$ 513,782
Other Than Mortgage Backed Securities
Amortized cost
Due after one year through five years	100,189
Due after five years through ten years	9,888
Amortized cost	110,077
Estimated fair value
Due after one year through five years	99,505
Due after one year through five years	9,892
Estimated fair value	$ 109,397

Debt Securities Available-for31

Debt Securities Available-for-Sale - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)security	Jun. 30, 2017USD ($)
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities pledged to secure borrowings and deposits | $	$ 441,200,000		$ 441,200,000
Proceeds from sale of debt securities available-for-sale | $	10,100,000	$ 967,000	29,608,000	$ 967,000
Gross realized gains on sales of securities available-for-sale | $	116,000	0	176,000	0
Gross realized losses on sales of securities available-for-sale | $	0	4,000	5,000	4,000
Recognized gains (losses) on trading securities portfolio | $	197,000	260,000	302,000	668,000
Impairment charges against earnings | $	$ 0	$ 0	$ 0	$ 0
Continuous Unrealized Loss Position 12 Months Or Longer | Non-GSE | Real Estate Mortgage Investment Conduits (REMICs)
Schedule of Available-for-sale Securities [Line Items]
Number of securities (securities) | security			1
Continuous Unrealized Loss Position Less Than 12 Months | Corporate bonds | Real Estate Mortgage Investment Conduits (REMICs)
Schedule of Available-for-sale Securities [Line Items]
Number of securities (securities) | security			13
Pass Through | Continuous Unrealized Loss Position 12 Months Or Longer | GSE | Real Estate Mortgage Investment Conduits (REMICs)
Schedule of Available-for-sale Securities [Line Items]
Number of securities (securities) | security			33
Pass Through | Continuous Unrealized Loss Position Less Than 12 Months | GSE | Pass-through Certificates
Schedule of Available-for-sale Securities [Line Items]
Number of securities (securities) | security			40
Non Pass Through | Continuous Unrealized Loss Position 12 Months Or Longer | GSE | Real Estate Mortgage Investment Conduits (REMICs)
Schedule of Available-for-sale Securities [Line Items]
Number of securities (securities) | security			19
Non Pass Through | Continuous Unrealized Loss Position Less Than 12 Months | GSE | Real Estate Mortgage Investment Conduits (REMICs)
Schedule of Available-for-sale Securities [Line Items]
Number of securities (securities) | security			37

Debt Securities Available-for32

Debt Securities Available-for-Sale - Gross Unrealized Losses on Mortgage-Backed Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses, less than 12 months	$ 4,772	$ 1,433
Estimated Fair value, less than 12 months	299,949	163,581
Unrealized losses, 12 months or more	12,125	8,079
Estimated Fair value, 12 months or more	210,125	231,106
Unrealized losses, total	16,897	9,512
Estimated fair value, total	510,074	394,687
Pass-through Certificates | GSE
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses, less than 12 months	1,538	439
Estimated Fair value, less than 12 months	104,219	48,931
Unrealized losses, 12 months or more	3,700	2,015
Estimated Fair value, 12 months or more	74,599	76,113
Unrealized losses, total	5,238	2,454
Estimated fair value, total	178,818	125,044
Real estate mortgage investment conduits (REMICs) | GSE
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses, less than 12 months	2,720	933
Estimated Fair value, less than 12 months	120,720	103,644
Unrealized losses, 12 months or more	8,040	5,926
Estimated Fair value, 12 months or more	120,653	139,830
Unrealized losses, total	10,760	6,859
Estimated fair value, total	241,373	243,474
Real estate mortgage investment conduits (REMICs) | Non-GSE
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses, less than 12 months	0	0
Estimated Fair value, less than 12 months	0	0
Unrealized losses, 12 months or more	1	1
Estimated Fair value, 12 months or more	75	79
Unrealized losses, total	1	1
Estimated fair value, total	75	79
Debt securities | Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses, less than 12 months	514	61
Estimated Fair value, less than 12 months	75,010	11,006
Unrealized losses, 12 months or more	384	137
Estimated Fair value, 12 months or more	14,798	15,084
Unrealized losses, total	898	198
Estimated fair value, total	$ 89,808	$ 26,090

Debt Securities Held-to-Matur33

Debt Securities Held-to-Maturity - Mortgage Backed Securities Held-to-Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 9,819	$ 9,931
Gross Unrealized Gains	0	17
Gross Unrealized Losses	290	56
Estimated Fair Value	9,529	9,892
Mortgage Backed Securities Pass Through Certificates
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	9,819	9,931
Gross Unrealized Gains	0	17
Gross Unrealized Losses	290	56
Estimated Fair Value	$ 9,529	$ 9,892

Debt Securities Held-to-Matur34

Debt Securities Held-to-Maturity - Held-to-Maturity Securities in a Continuous Unrealized Loss Positions (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018USD ($)loan	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)loan	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities sold	$ 0	$ 0	$ 0	$ 0
Held-to-maturity securities pledged to secure borrowings and deposits	7,100,000		7,100,000
Unrealized losses
Less than 12 months			145,000		$ 7,000
12 months or more			145,000		49,000
Total			290,000		56,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months	5,930,000		5,930,000		3,922,000
12 months or more	3,599,000		3,599,000		3,735,000
Total	9,529,000		9,529,000		7,657,000
Other-than-temporary impairment charge recognized in earnings	0	$ 0	0	$ 0
Mortgage Backed Securities Pass Through Certificates
Unrealized losses
Less than 12 months			145,000		7,000
12 months or more			145,000		49,000
Total			290,000		56,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months	5,930,000		5,930,000		3,922,000
12 months or more	3,599,000		3,599,000		3,735,000
Total	$ 9,529,000		$ 9,529,000		$ 7,657,000
Number of mortgage-backed securities in unrealized loss position, greater than 12 months (loan) | loan	2		2
Number of mortgage-backed securities in unrealized loss position, less than 12 months (loan) | loan	4		4

Equity Securities (Details)

Equity Securities (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity securities	$ 1,301,000	$ 1,339,000
Equity securities without readily determinable fair value	1,000,000	1,000,000
Money Market Funds
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity securities, fair value	272,000	323,000
SBA Loan Fund
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity securities without readily determinable fair value	$ 1,000,000	$ 1,000,000

Loans - Net Loans Held-for-Inve

Loans - Net Loans Held-for-Investment (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Loans held-for-investment, net	$ 3,220,126		$ 3,140,819
PCI Loans	21,331		22,741
Allowance for loan losses	(26,882)	$ (26,172)	(26,160)	$ (25,605)	$ (25,284)	$ (24,595)
Net loans held-for-investment	3,193,244		3,114,659
Originated
Loans and Leases Receivable Disclosure [Line Items]
Loans	41,214		36,258
Deferred loan cost, net	6,799		6,339
Loans held-for-investment, net	2,547,920		2,425,275
Allowance for loan losses	(25,931)	(25,218)	(25,172)	(24,643)	(24,354)	(23,624)
Acquired Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	650,875		692,803
Loans held-for-investment, net	650,875		692,803
Allowance for loan losses	0	(3)	(37)	(66)	(34)	(75)
Real Estate | Originated
Loans and Leases Receivable Disclosure [Line Items]
Loans	2,499,907		2,382,678
Real Estate | Acquired Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	635,918		675,820
Real Estate | Multifamily | Originated
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,800,421		1,735,712
Loans held-for-investment, net	1,803,834		1,739,220
Allowance for loan losses	(17,603)	(17,412)	(17,374)	(16,636)	(16,184)	(14,952)
Real Estate | Multifamily | Acquired Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	180,951		199,149
Real Estate | Commercial | Originated
Loans and Leases Receivable Disclosure [Line Items]
Loans	499,518		445,225
Loans held-for-investment, net	500,051		445,781
Allowance for loan losses	(5,718)	(5,213)	(5,196)	(5,236)	(5,231)	(5,432)
Real Estate | Commercial | Acquired Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	155,250		163,962
Real Estate | One-to-Four Family | Originated
Loans and Leases Receivable Disclosure [Line Items]
Loans	100,257		100,942
Loans held-for-investment, net	101,354		101,650
Allowance for loan losses	(384)	(455)	(503)	(550)	(649)	(664)
Real Estate | One-to-Four Family | Acquired Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	265,709		275,053
Real Estate | Home equity and lines of credit | Originated
Loans and Leases Receivable Disclosure [Line Items]
Loans	72,728		66,254
Loans held-for-investment, net	74,324		67,679
Allowance for loan losses	(279)	(225)	(122)	(363)	(492)	(588)
Real Estate | Home equity and lines of credit | Acquired Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	19,009		20,455
Real Estate | Construction and Land | Originated
Loans and Leases Receivable Disclosure [Line Items]
Loans	26,983		34,545
Loans held-for-investment, net	27,048		34,620
Allowance for loan losses	(438)	(463)	(610)	(229)	(165)	(172)
Real Estate | Construction and Land | Acquired Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	14,999		17,201
Commercial and Industrial | Originated
Loans and Leases Receivable Disclosure [Line Items]
Loans	39,682		34,828
Loans held-for-investment, net	39,776		34,893
Allowance for loan losses	(1,402)	(1,337)	(1,273)	(1,532)	(1,561)	(1,720)
Commercial and Industrial | Acquired Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	14,939		16,946
Other | Originated
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,532		1,430
Loans held-for-investment, net	1,533		1,432
Allowance for loan losses	(107)	$ (113)	(94)	$ (97)	$ (72)	$ (96)
Other | Acquired Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 18		$ 37

Loans - Narrative, PCI Loans (D

Loans - Narrative, PCI Loans (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-sale		$ 0
Purchased credit-impaired (“PCI”) loans held-for-investment	$ 21,331,000	$ 22,741,000
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of PCI loans	27.00%	27.00%
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of PCI loans	50.00%	50.00%

Loans - Summary of Accretable Y

Loans - Summary of Accretable Yield (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accretable Yield Movement Schedule [Roll Forward]
Balance at the beginning of period	$ 23,412	$ 22,763	$ 24,502	$ 24,215
Accretion into interest income	(1,026)	(1,321)	(2,116)	(2,773)
Balance at end of period	$ 22,386	$ 21,442	$ 22,386	$ 21,442

Loans - Amount of Loans Receiva

Loans - Amount of Loans Receivable Held-for-Investment and Related Allowances Per Loan Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Allowance for loan losses:
Beginning Balance	$ 26,172	$ 25,284	$ 26,160	$ 24,595
Charge-offs	0	(290)	(64)	(317)
Recoveries	40	100	82	444
Provisions (credit)	670	511	704	883
Ending balance	26,882	25,605	26,882	25,605
Ending balance: individually evaluated for impairment	43		43		$ 82
Ending balance: collectively evaluated for impairment	26,839		26,839		26,078
Loans, net:
Loans held-for-investment, net	3,220,126		3,220,126		3,140,819
Ending balance: individually evaluated for impairment	20,090		20,090		21,085
Ending balance: collectively evaluated for impairment	3,200,036		3,200,036		3,119,734
Originated
Allowance for loan losses:
Beginning Balance	25,218	24,354	25,172	23,624
Charge-offs	0	(282)	(63)	(286)
Recoveries	38	98	74	440
Provisions (credit)	675	473	748	865
Ending balance	25,931	24,643	25,931	24,643
Ending balance: individually evaluated for impairment	43		43		45
Ending balance: collectively evaluated for impairment	25,888		25,888		25,127
Loans, net:
Loans held-for-investment, net	2,547,920		2,547,920		2,425,275
Ending balance: individually evaluated for impairment	19,146		19,146		19,542
Ending balance: collectively evaluated for impairment	2,528,774		2,528,774		2,405,733
Purchased Credit-Impaired
Allowance for loan losses:
Beginning Balance	951	896	951	896
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions (credit)	0	0	0	0
Ending balance	951	896	951	896
Ending balance: individually evaluated for impairment	0		0		0
Ending balance: collectively evaluated for impairment	951		951		951
Loans, net:
Loans held-for-investment, net	21,331		21,331		22,741
Ending balance: individually evaluated for impairment	0		0		0
Ending balance: collectively evaluated for impairment	21,331		21,331		22,741
Acquired Loans
Allowance for loan losses:
Beginning Balance	3	34	37	75
Charge-offs	0	(8)	(1)	(31)
Recoveries	2	2	8	4
Provisions (credit)	(5)	38	(44)	18
Ending balance	0	66	0	66
Ending balance: individually evaluated for impairment	0		0		37
Ending balance: collectively evaluated for impairment	0		0		0
Loans, net:
Loans held-for-investment, net	650,875		650,875		692,803
Ending balance: individually evaluated for impairment	944		944		1,543
Ending balance: collectively evaluated for impairment	649,931		649,931		691,260
Real Estate | Commercial | Originated
Allowance for loan losses:
Beginning Balance	5,213	5,231	5,196	5,432
Charge-offs	0	0	(3)	(4)
Recoveries	12	17	28	34
Provisions (credit)	493	(12)	497	(226)
Ending balance	5,718	5,236	5,718	5,236
Ending balance: individually evaluated for impairment	13		13		0
Ending balance: collectively evaluated for impairment	5,705		5,705		5,196
Loans, net:
Loans held-for-investment, net	500,051		500,051		445,781
Ending balance: individually evaluated for impairment	15,707		15,707		16,008
Ending balance: collectively evaluated for impairment	484,344		484,344		429,773
Real Estate | One-to-Four Family | Originated
Allowance for loan losses:
Beginning Balance	455	649	503	664
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions (credit)	(71)	(99)	(119)	(114)
Ending balance	384	550	384	550
Ending balance: individually evaluated for impairment	18		18		38
Ending balance: collectively evaluated for impairment	366		366		465
Loans, net:
Loans held-for-investment, net	101,354		101,354		101,650
Ending balance: individually evaluated for impairment	1,947		1,947		1,996
Ending balance: collectively evaluated for impairment	99,407		99,407		99,654
Real Estate | Construction and Land | Originated
Allowance for loan losses:
Beginning Balance	463	165	610	172
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions (credit)	(25)	64	(172)	57
Ending balance	438	229	438	229
Ending balance: individually evaluated for impairment	0		0		0
Ending balance: collectively evaluated for impairment	438		438		610
Loans, net:
Loans held-for-investment, net	27,048		27,048		34,620
Ending balance: individually evaluated for impairment	0		0		0
Ending balance: collectively evaluated for impairment	27,048		27,048		34,620
Real Estate | Multifamily | Originated
Allowance for loan losses:
Beginning Balance	17,412	16,184	17,374	14,952
Charge-offs	0	(178)	0	(178)
Recoveries	26	0	26	278
Provisions (credit)	165	630	203	1,584
Ending balance	17,603	16,636	17,603	16,636
Ending balance: individually evaluated for impairment	0		0		0
Ending balance: collectively evaluated for impairment	17,603		17,603		17,374
Loans, net:
Loans held-for-investment, net	1,803,834		1,803,834		1,739,220
Ending balance: individually evaluated for impairment	1,275		1,275		1,310
Ending balance: collectively evaluated for impairment	1,802,559		1,802,559		1,737,910
Real Estate | Home equity and lines of credit | Originated
Allowance for loan losses:
Beginning Balance	225	492	122	588
Charge-offs	0	(104)	(60)	(104)
Recoveries	0	64	0	64
Provisions (credit)	54	(89)	217	(185)
Ending balance	279	363	279	363
Ending balance: individually evaluated for impairment	10		10		4
Ending balance: collectively evaluated for impairment	269		269		118
Loans, net:
Loans held-for-investment, net	74,324		74,324		67,679
Ending balance: individually evaluated for impairment	65		65		69
Ending balance: collectively evaluated for impairment	74,259		74,259		67,610
Commercial and Industrial | Originated
Allowance for loan losses:
Beginning Balance	1,337	1,561	1,273	1,720
Charge-offs	0	0	0	0
Recoveries	0	17	20	64
Provisions (credit)	65	(46)	109	(252)
Ending balance	1,402	1,532	1,402	1,532
Ending balance: individually evaluated for impairment	2		2		3
Ending balance: collectively evaluated for impairment	1,400		1,400		1,270
Loans, net:
Loans held-for-investment, net	39,776		39,776		34,893
Ending balance: individually evaluated for impairment	152		152		159
Ending balance: collectively evaluated for impairment	39,624		39,624		34,734
Other | Originated
Allowance for loan losses:
Beginning Balance	113	72	94	96
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions (credit)	(6)	25	13	1
Ending balance	107	97	107	97
Ending balance: individually evaluated for impairment	0		0		0
Ending balance: collectively evaluated for impairment	107		107		94
Loans, net:
Loans held-for-investment, net	1,533		1,533		1,432
Ending balance: individually evaluated for impairment	0		0		0
Ending balance: collectively evaluated for impairment	1,533		1,533		$ 1,432
Unallocated | Originated
Allowance for loan losses:
Beginning Balance	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions (credit)	0	0	0	0
Ending balance	$ 0	$ 0	$ 0	$ 0

Loans - Narrative, Loan-to-Valu

Loans - Narrative, Loan-to-Value Ratios (Details)	Jun. 30, 2018
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan to value ratio, less than	35.00%
One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan to value ratio, less than	60.00%

Loans - Investment of Originate

Loans - Investment of Originated Loans Held-for-Investment by Loan Type and Credit Quality Indicator (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 2,547,920	$ 2,425,275
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	2,530,216	2,403,739
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	3,423	5,759
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	14,281	15,777
Real Estate | Multifamily | Less Than 35% LTV
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	139,016	131,792
Real Estate | Multifamily | Less Than 35% LTV | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	139,016	131,792
Real Estate | Multifamily | Less Than 35% LTV | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Real Estate | Multifamily | Less Than 35% LTV | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Real Estate | Multifamily | Equal to or Greater than 35% LTV
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,664,818	1,607,428
Real Estate | Multifamily | Equal to or Greater than 35% LTV | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,662,881	1,603,947
Real Estate | Multifamily | Equal to or Greater than 35% LTV | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	626	1,897
Real Estate | Multifamily | Equal to or Greater than 35% LTV | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,311	1,584
Real Estate | Commercial mortgage | Less Than 35% LTV
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	72,030	85,030
Real Estate | Commercial mortgage | Less Than 35% LTV | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	71,628	84,620
Real Estate | Commercial mortgage | Less Than 35% LTV | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	402	410
Real Estate | Commercial mortgage | Less Than 35% LTV | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Real Estate | Commercial mortgage | Equal to or Greater than 35% LTV
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	428,021	360,751
Real Estate | Commercial mortgage | Equal to or Greater than 35% LTV | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	416,297	346,857
Real Estate | Commercial mortgage | Equal to or Greater than 35% LTV | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,158	2,170
Real Estate | Commercial mortgage | Equal to or Greater than 35% LTV | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	10,566	11,724
Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	61,205	62,553
Real Estate | One-to-four family residential mortgage | Less Than 60% LTV | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	59,099	60,400
Real Estate | One-to-four family residential mortgage | Less Than 60% LTV | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	672	683
Real Estate | One-to-four family residential mortgage | Less Than 60% LTV | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,434	1,470
Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	40,149	39,097
Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	39,571	38,504
Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	578	593
Real Estate | Construction and land
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	27,048	34,620
Real Estate | Construction and land | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	27,048	34,620
Real Estate | Construction and land | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Real Estate | Construction and land | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Real Estate | Home equity and lines of credit
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	74,324	67,679
Real Estate | Home equity and lines of credit | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	74,079	67,426
Real Estate | Home equity and lines of credit | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	27	28
Real Estate | Home equity and lines of credit | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	218	225
Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	39,776	34,893
Commercial and Industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	39,064	34,141
Commercial and Industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	538	571
Commercial and Industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	174	181
Other
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,533	1,432
Other | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,533	1,432
Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 0	$ 0

Loans - Narrative, Loans (Detai

Loans - Narrative, Loans (Details) - USD ($)	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Investment in non accrual loans	$ 6,400,000	$ 5,500,000
Criteria days for delinquent status	90 days
Impairment of loans	$ 3,300,000	3,100,000
Principal balance of loans on non accrual status, less then	500,000
Loans on non accrual status with principal balances below threshold definition of an impaired loan	3,100,000	2,400,000
Loans held-for-sale, non-accrual	0	0
90 days or more past due and accruing	0	28,000
Impaired loans not written down	$ 13,200,000	$ 14,500,000

Loans - PCI Loan Pools (Details

Loans - PCI Loan Pools (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 Days or More Past Due and Accruing	$ 0	$ 28
Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	6,378	5,508
90 Days or More Past Due and Accruing	0	28
Total Non-Performing Loans	6,378	5,536
Non-Performing Loans | Loans Held For Investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,727	3,775
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	3,727	3,775
Non-Performing Loans | Loans Held For Investment | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,023	3,051
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	3,023	3,051
Non-Performing Loans | Loans Held For Investment | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	555
90 Days or More Past Due and Accruing	0
Total Non-Performing Loans	555
Non-Performing Loans | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	519
90 Days or More Past Due and Accruing	0
Total Non-Performing Loans	519
Non-Performing Loans | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		573
90 Days or More Past Due and Accruing		0
Total Non-Performing Loans		573
Non-Performing Loans | Loans Held For Investment | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	77	79
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	77	79
Non-Performing Loans | Loans Held For Investment | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	72	72
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	72	72
Non-Performing Loans | Loans acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,651	1,733
90 Days or More Past Due and Accruing	0	28
Total Non-Performing Loans	2,651	1,761
Non-Performing Loans | Loans acquired | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,597	1,036
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	1,597	1,036
Non-Performing Loans | Loans acquired | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		201
90 Days or More Past Due and Accruing		27
Total Non-Performing Loans		228
Non-Performing Loans | Loans acquired | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	409
90 Days or More Past Due and Accruing	0
Total Non-Performing Loans	409
Non-Performing Loans | Loans acquired | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	568	417
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	568	417
Non-Performing Loans | Loans acquired | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	77	77
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	77	77
Non-Performing Loans | Loans acquired | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		2
90 Days or More Past Due and Accruing		0
Total Non-Performing Loans		2
Non-Performing Loans | Substandard | Loans Held For Investment | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,023	3,051
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	3,023	3,051
Non-Performing Loans | Substandard | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	519	534
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	519	534
Non-Performing Loans | Substandard | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	36	39
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	36	39
Non-Performing Loans | Substandard | Loans Held For Investment | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	77	79
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	77	79
Non-Performing Loans | Substandard | Loans Held For Investment | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	72	72
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	72	72
Non-Performing Loans | Substandard | Loans acquired | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	291	205
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	291	205
Non-Performing Loans | Substandard | Loans acquired | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,306	831
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	1,306	831
Non-Performing Loans | Substandard | Loans acquired | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	285	201
90 Days or More Past Due and Accruing	0	27
Total Non-Performing Loans	285	228
Non-Performing Loans | Substandard | Loans acquired | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	124
90 Days or More Past Due and Accruing	0
Total Non-Performing Loans	124
Non-Performing Loans | Substandard | Loans acquired | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	152
90 Days or More Past Due and Accruing	0
Total Non-Performing Loans	152
Non-Performing Loans | Substandard | Loans acquired | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	416	417
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	416	417
Non-Performing Loans | Substandard | Loans acquired | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	77	77
90 Days or More Past Due and Accruing	0	0
Total Non-Performing Loans	77	77
Non-Performing Loans | Substandard | Loans acquired | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		2
90 Days or More Past Due and Accruing		0
Total Non-Performing Loans		2
Non-Performing Loans | Pass | Loans acquired | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
90 Days or More Past Due and Accruing		1
Total Non-Performing Loans		1
Non-Performing Loans | 0-29 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	596	511
Non-Performing Loans | 0-29 Days Past Due | Loans Held For Investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	77	511
Non-Performing Loans | 0-29 Days Past Due | Loans Held For Investment | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	432
Non-Performing Loans | 0-29 Days Past Due | Loans Held For Investment | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Non-Performing Loans | 0-29 Days Past Due | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Non-Performing Loans | 0-29 Days Past Due | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Non-Performing Loans | 0-29 Days Past Due | Loans Held For Investment | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	77	79
Non-Performing Loans | 0-29 Days Past Due | Loans Held For Investment | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 0-29 Days Past Due | Loans acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	519	0
Non-Performing Loans | 0-29 Days Past Due | Loans acquired | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	519	0
Non-Performing Loans | 0-29 Days Past Due | Loans acquired | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Non-Performing Loans | 0-29 Days Past Due | Loans acquired | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Non-Performing Loans | 0-29 Days Past Due | Loans acquired | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 0-29 Days Past Due | Loans acquired | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 0-29 Days Past Due | Loans acquired | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans Held For Investment | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	432
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans Held For Investment | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	77	79
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans Held For Investment | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans acquired | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans acquired | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	519	0
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans acquired | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans acquired | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans acquired | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans acquired | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans acquired | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 0-29 Days Past Due | Substandard | Loans acquired | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Non-Performing Loans | 0-29 Days Past Due | Pass | Loans acquired | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Non-Performing Loans | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,055	1,939
Non-Performing Loans | 30-89 Days Past Due | Loans Held For Investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,161	520
Non-Performing Loans | 30-89 Days Past Due | Loans Held For Investment | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	719	314
Non-Performing Loans | 30-89 Days Past Due | Loans Held For Investment | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	442
Non-Performing Loans | 30-89 Days Past Due | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	442
Non-Performing Loans | 30-89 Days Past Due | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		206
Non-Performing Loans | 30-89 Days Past Due | Loans Held For Investment | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 30-89 Days Past Due | Loans Held For Investment | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 30-89 Days Past Due | Loans acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	894	1,419
Non-Performing Loans | 30-89 Days Past Due | Loans acquired | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	250	773
Non-Performing Loans | 30-89 Days Past Due | Loans acquired | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		201
Non-Performing Loans | 30-89 Days Past Due | Loans acquired | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	200
Non-Performing Loans | 30-89 Days Past Due | Loans acquired | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	416	417
Non-Performing Loans | 30-89 Days Past Due | Loans acquired | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	28	28
Non-Performing Loans | 30-89 Days Past Due | Loans acquired | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans Held For Investment | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	719	314
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	442	206
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans Held For Investment | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans Held For Investment | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans acquired | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans acquired | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	250	773
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans acquired | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	200	201
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans acquired | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans acquired | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans acquired | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	416	417
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans acquired | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	28	28
Non-Performing Loans | 30-89 Days Past Due | Substandard | Loans acquired | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Non-Performing Loans | 30-89 Days Past Due | Pass | Loans acquired | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Non-Performing Loans | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,727	3,058
Non-Performing Loans | 90 Days or More Past Due | Loans Held For Investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,489	2,744
Non-Performing Loans | 90 Days or More Past Due | Loans Held For Investment | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,304	2,305
Non-Performing Loans | 90 Days or More Past Due | Loans Held For Investment | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	113
Non-Performing Loans | 90 Days or More Past Due | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	77
Non-Performing Loans | 90 Days or More Past Due | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		367
Non-Performing Loans | 90 Days or More Past Due | Loans Held For Investment | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 90 Days or More Past Due | Loans acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,238	314
Non-Performing Loans | 90 Days or More Past Due | Loans acquired | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	828	263
Non-Performing Loans | 90 Days or More Past Due | Loans acquired | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Non-Performing Loans | 90 Days or More Past Due | Loans acquired | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	209
Non-Performing Loans | 90 Days or More Past Due | Loans acquired | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	152	0
Non-Performing Loans | 90 Days or More Past Due | Loans acquired | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	49	49
Non-Performing Loans | 90 Days or More Past Due | Loans acquired | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		2
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans Held For Investment | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,304	2,305
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	77	328
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	36	39
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans Held For Investment | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans Held For Investment | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	72	72
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans acquired | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	291	205
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans acquired | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	537	58
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans acquired | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	85	0
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans acquired | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	124
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans acquired | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	152
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans acquired | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans acquired | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 49	49
Non-Performing Loans | 90 Days or More Past Due | Substandard | Loans acquired | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		2
Non-Performing Loans | 90 Days or More Past Due | Pass | Loans acquired | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		$ 0

Loans - Loans Held-for-Investme

Loans - Loans Held-for-Investment by Performing and Non-Performing Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	$ 2,547,920	$ 2,425,275
Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	6,378	5,508
Non-Performing Loans	6,378	5,536
Loans Held For Investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	2,547,920	2,425,275
Loans Held For Investment | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	500,051	445,781
Loans Held For Investment | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	72,030	85,030
Loans Held For Investment | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	428,021	360,751
Loans Held For Investment | Real Estate | Commercial | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	71,628	84,620
Loans Held For Investment | Real Estate | Commercial | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	416,297	346,857
Loans Held For Investment | Real Estate | Commercial | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	10,566	11,724
Loans Held For Investment | Real Estate | Commercial | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	402	410
Loans Held For Investment | Real Estate | Commercial | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	1,158	2,170
Loans Held For Investment | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	101,354	101,650
Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	61,205	62,553
Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	40,149	39,097
Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Pass | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	59,099	60,400
Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Pass | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	39,571	38,504
Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Substandard | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	1,434	1,470
Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Substandard | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	578	593
Loans Held For Investment | Real Estate | One-to-four family residential mortgage | Special Mention | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	672	683
Loans Held For Investment | Real Estate | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	27,048	34,620
Loans Held For Investment | Real Estate | Construction and land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	27,048	34,620
Loans Held For Investment | Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	1,803,834	1,739,220
Loans Held For Investment | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	139,016	131,792
Loans Held For Investment | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	1,664,818	1,607,428
Loans Held For Investment | Real Estate | Multifamily | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	139,016	131,792
Loans Held For Investment | Real Estate | Multifamily | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	1,662,881	1,603,947
Loans Held For Investment | Real Estate | Multifamily | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	1,311	1,584
Loans Held For Investment | Real Estate | Multifamily | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	626	1,897
Loans Held For Investment | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	74,324	67,679
Loans Held For Investment | Real Estate | Home equity and lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	74,079	67,426
Loans Held For Investment | Real Estate | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	218	225
Loans Held For Investment | Real Estate | Home equity and lines of credit | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	27	28
Loans Held For Investment | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	39,776	34,893
Loans Held For Investment | Commercial and Industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	39,064	34,141
Loans Held For Investment | Commercial and Industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	174	181
Loans Held For Investment | Commercial and Industrial | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	538	571
Loans Held For Investment | Other | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	1,533	1,432
Loans Held For Investment | Performing (Accruing) Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	2,544,193	2,421,500
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	497,028	442,730
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	72,030	85,030
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	424,998	357,700
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	71,628	84,620
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	416,297	346,857
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	7,543	8,673
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	402	410
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,158	2,170
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	100,799	101,077
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	60,686	62,019
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	40,113	39,058
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	59,099	60,400
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	39,571	38,504
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	915	936
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	542	554
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Special Mention | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	672	683
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	27,048	34,620
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Construction and land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	27,048	34,620
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,803,834	1,739,220
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	139,016	131,792
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,664,818	1,607,428
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	139,016	131,792
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,662,881	1,603,947
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,311	1,584
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	626	1,897
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	74,247	67,600
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	74,079	67,426
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	141	146
Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	27	28
Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	39,704	34,821
Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	39,064	34,141
Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	102	109
Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	538	571
Loans Held For Investment | Performing (Accruing) Loans | Other | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,533	1,432
Loans Held For Investment | Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	3,727	3,775
Loans Held For Investment | Non-Performing Loans | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	3,023	3,051
Loans Held For Investment | Non-Performing Loans | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	3,023	3,051
Loans Held For Investment | Non-Performing Loans | Real Estate | Commercial | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Commercial | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Commercial | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	3,023	3,051
Loans Held For Investment | Non-Performing Loans | Real Estate | Commercial | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Commercial | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	555	573
Loans Held For Investment | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	519	534
Loans Held For Investment | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	36	39
Loans Held For Investment | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Pass | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Pass | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Substandard | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	519	534
Loans Held For Investment | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Substandard | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	36	39
Loans Held For Investment | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Special Mention | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Construction and land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Multifamily | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Multifamily | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Multifamily | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Multifamily | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	77	79
Loans Held For Investment | Non-Performing Loans | Real Estate | Home equity and lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Real Estate | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	77	79
Loans Held For Investment | Non-Performing Loans | Real Estate | Home equity and lines of credit | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	72	72
Loans Held For Investment | Non-Performing Loans | Commercial and Industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Commercial and Industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	72	72
Loans Held For Investment | Non-Performing Loans | Commercial and Industrial | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans Held For Investment | Non-Performing Loans | Other | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	650,875	692,803
Loans acquired | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	18
Loans acquired | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	155,250	163,962
Loans acquired | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	53,019	50,582
Loans acquired | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	102,231	113,380
Loans acquired | Real Estate | Commercial | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	52,486	50,105
Loans acquired | Real Estate | Commercial | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	96,735	108,283
Loans acquired | Real Estate | Commercial | Substandard | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	375	386
Loans acquired | Real Estate | Commercial | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	5,365	4,964
Loans acquired | Real Estate | Commercial | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	158	91
Loans acquired | Real Estate | Commercial | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	131	133
Loans acquired | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	265,709	275,053
Loans acquired | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	242,985	251,623
Loans acquired | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	22,724	23,430
Loans acquired | Real Estate | One-to-four family residential mortgage | Pass | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	242,194	250,373
Loans acquired | Real Estate | One-to-four family residential mortgage | Pass | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	22,600	23,295
Loans acquired | Real Estate | One-to-four family residential mortgage | Substandard | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	362	795
Loans acquired | Real Estate | One-to-four family residential mortgage | Substandard | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	124	135
Loans acquired | Real Estate | One-to-four family residential mortgage | Special Mention | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	429	455
Loans acquired | Real Estate | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	14,999	17,201
Loans acquired | Real Estate | Construction and land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	14,999	17,201
Loans acquired | Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	180,951	199,149
Loans acquired | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	172,698	189,782
Loans acquired | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	8,253	9,367
Loans acquired | Real Estate | Multifamily | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	172,481	189,551
Loans acquired | Real Estate | Multifamily | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	7,837	8,950
Loans acquired | Real Estate | Multifamily | Substandard | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	152	153
Loans acquired | Real Estate | Multifamily | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	416	417
Loans acquired | Real Estate | Multifamily | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	65	78
Loans acquired | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	19,009	20,455
Loans acquired | Real Estate | Home equity and lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	18,850	20,291
Loans acquired | Real Estate | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	159	164
Loans acquired | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	14,939	16,946
Loans acquired | Commercial and Industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	14,939	16,944
Loans acquired | Commercial and Industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net		2
Loans acquired | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net		37
Loans acquired | Performing (Accruing) Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	648,224	691,042
Loans acquired | Performing (Accruing) Loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	18
Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	153,653	162,926
Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	52,728	50,377
Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	100,925	112,549
Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	52,486	50,105
Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	96,735	108,283
Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Substandard | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	84	181
Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	4,059	4,133
Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	158	91
Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	131	133
Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	265,300	274,825
Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	242,700	251,395
Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	22,600	23,430
Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	242,194	250,373
Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	22,600	23,295
Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	77	567
Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	135
Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Special Mention | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	429	455
Loans acquired | Performing (Accruing) Loans | Real Estate | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	14,999	17,201
Loans acquired | Performing (Accruing) Loans | Real Estate | Construction and land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	14,999	17,201
Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	180,383	198,732
Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	172,546	189,782
Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	7,837	8,950
Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	172,481	189,551
Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	7,837	8,950
Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Substandard | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	153
Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	65	78
Loans acquired | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	18,932	20,378
Loans acquired | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	18,850	20,291
Loans acquired | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	82	87
Loans acquired | Performing (Accruing) Loans | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	14,939	16,944
Loans acquired | Performing (Accruing) Loans | Commercial and Industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	14,939	16,944
Loans acquired | Performing (Accruing) Loans | Commercial and Industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans		0
Loans acquired | Performing (Accruing) Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans		36
Loans acquired | Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	2,651	1,761
Loans acquired | Non-Performing Loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0
Loans acquired | Non-Performing Loans | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	1,597	1,036
Loans acquired | Non-Performing Loans | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	291	205
Loans acquired | Non-Performing Loans | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	1,306	831
Loans acquired | Non-Performing Loans | Real Estate | Commercial | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | Commercial | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | Commercial | Substandard | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	291	205
Loans acquired | Non-Performing Loans | Real Estate | Commercial | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	1,306	831
Loans acquired | Non-Performing Loans | Real Estate | Commercial | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | Commercial | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	409	228
Loans acquired | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	285	228
Loans acquired | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	124	0
Loans acquired | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Pass | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Pass | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Substandard | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	285	228
Loans acquired | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Substandard | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	124	0
Loans acquired | Non-Performing Loans | Real Estate | One-to-four family residential mortgage | Special Mention | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | Construction and land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	568	417
Loans acquired | Non-Performing Loans | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	152	0
Loans acquired | Non-Performing Loans | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	416	417
Loans acquired | Non-Performing Loans | Real Estate | Multifamily | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | Multifamily | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | Multifamily | Substandard | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	152	0
Loans acquired | Non-Performing Loans | Real Estate | Multifamily | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	416	417
Loans acquired | Non-Performing Loans | Real Estate | Multifamily | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	77	77
Loans acquired | Non-Performing Loans | Real Estate | Home equity and lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Real Estate | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	77	77
Loans acquired | Non-Performing Loans | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	2
Loans acquired | Non-Performing Loans | Commercial and Industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	0	0
Loans acquired | Non-Performing Loans | Commercial and Industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans		2
Loans acquired | Non-Performing Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans		1
Total Loans Include Loans Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held-for-investment, net	3,198,795	3,118,078
Total Loans Include Loans Acquired | Performing (Accruing) Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	3,192,417	3,112,542
Total Loans Include Loans Acquired | Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Performing Loans	6,378	5,536
0-29 Days Past Due | Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	596	511
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	2,536,988	2,410,842
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	495,045	439,356
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	71,628	84,620
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	423,417	354,736
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	71,628	84,620
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	414,716	346,229
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	7,543	7,675
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,158	832
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	97,259	97,287
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	57,605	58,229
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	39,654	39,058
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	56,690	57,907
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	39,335	38,504
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	915	322
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	319	554
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Special Mention | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	27,046	34,614
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Construction and land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	27,046	34,614
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,802,303	1,735,923
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	138,715	131,488
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,663,588	1,604,435
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	138,715	131,488
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,662,881	1,603,714
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	81	83
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	626	638
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	74,151	67,600
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	73,983	67,426
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	141	146
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	27	28
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	39,660	34,659
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	39,057	34,003
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	102	109
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	501	547
0-29 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Other | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,524	1,403
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	640,877	689,656
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	18
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	149,003	161,954
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	52,574	50,126
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	96,429	111,828
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	52,486	50,035
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	92,790	108,125
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Substandard | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	3,639	3,703
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	88	91
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	262,686	274,451
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	240,618	251,021
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	22,068	23,430
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	240,125	250,149
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	22,068	23,295
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	64	417
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	135
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Special Mention | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	429	455
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	14,999	17,201
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Construction and land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	14,999	17,201
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	180,318	198,732
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	172,481	189,782
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	7,837	8,950
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	172,481	189,551
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	7,837	8,950
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Substandard | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	153
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	78
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	18,914	20,378
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	18,832	20,291
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	82	87
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	14,939	16,904
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Commercial and Industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	14,939	16,904
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Commercial and Industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans		0
0-29 Days Past Due | Loans acquired | Performing (Accruing) Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans		36
0-29 Days Past Due | Total Loans Include Loans Acquired | Performing (Accruing) Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	3,177,865	3,100,498
30-89 Days Past Due | Non-Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	2,055	1,939
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	7,205	10,658
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,983	3,374
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	402	410
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,581	2,964
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,581	628
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	998
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	402	410
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	1,338
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	3,540	3,790
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	3,081	3,790
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	459	0
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	2,409	2,493
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	236	0
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	614
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	223	0
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Special Mention | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	672	683
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	2	6
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Construction and land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	2	6
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,531	3,297
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	301	304
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,230	2,993
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	301	304
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	233
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	1,230	1,501
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Multifamily | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	1,259
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	96	0
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	96	0
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	44	162
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	7	138
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Commercial and Industrial | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	37	24
30-89 Days Past Due | Loans Held For Investment | Performing (Accruing) Loans | Other | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	9	29
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	7,347	1,386
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	4,650	972
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	154	251
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	4,496	721
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	70
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	3,945	158
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Substandard | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	84	181
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	420	430
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	70	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Commercial | Special Mention | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	131	133
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	2,614	374
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	2,082	374
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	532	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	2,069	224
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Pass | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	532	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	13	150
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Substandard | Equal to or Greater than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | One-to-four family residential mortgage | Special Mention | Less Than 60% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Construction and land | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	65	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	65	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Pass | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Substandard | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Substandard | Equal to or Greater than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Multifamily | Special Mention | Less Than 35% LTV
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	65	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	18	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	18	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Real Estate | Home equity and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	40
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Commercial and Industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	0	40
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Commercial and Industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans		0
30-89 Days Past Due | Loans acquired | Performing (Accruing) Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans		0
30-89 Days Past Due | Total Loans Include Loans Acquired | Performing (Accruing) Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing (Accruing) Loans	$ 14,552	$ 12,044

Loans - Summary of Impaired Loa

Loans - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 13,200	$ 14,500
Recorded investment	20,090	21,085
Unpaid Principal Balance	22,649	23,638
Impaired Financing Receivable, Related Allowance	(43)	(82)
Real Estate | Commercial
Financing Receivable, Impaired [Line Items]
Recorded investment	15,707	16,008
Unpaid Principal Balance	17,548	17,849
Impaired Financing Receivable, Related Allowance	(13)	0
Real Estate | One-to-four family residential mortgage
Financing Receivable, Impaired [Line Items]
Recorded investment	2,739	3,387
Unpaid Principal Balance	2,987	3,628
Impaired Financing Receivable, Related Allowance	(18)	(75)
Real Estate | Multifamily
Financing Receivable, Impaired [Line Items]
Recorded investment	1,427	1,462
Unpaid Principal Balance	1,897	1,933
Impaired Financing Receivable, Related Allowance	0	0
Real Estate | Home equity and lines of credit
Financing Receivable, Impaired [Line Items]
Recorded investment	65	69
Unpaid Principal Balance	65	69
Impaired Financing Receivable, Related Allowance	(10)	(4)
Real Estate | Home equity and lines of credit | Substandard
Financing Receivable, Impaired [Line Items]
Recorded Investment With a Related Allowance Recorded	34	36
Unpaid Principal Balance With a Related Allowance Recorded	34	36
Impaired Financing Receivable, Related Allowance	(10)	(4)
Real Estate | Home equity and lines of credit | Pass
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	31	33
Unpaid Principal Balance With No Related Allowance Recorded	31	33
Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Recorded investment	152	159
Unpaid Principal Balance	152	159
Impaired Financing Receivable, Related Allowance	(2)	(3)
Commercial and Industrial | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	129	135
Unpaid Principal Balance With No Related Allowance Recorded	129	135
Commercial and Industrial | Special Mention
Financing Receivable, Impaired [Line Items]
Recorded Investment With a Related Allowance Recorded	23	24
Unpaid Principal Balance With a Related Allowance Recorded	23	24
Impaired Financing Receivable, Related Allowance	(2)	(3)
Less Than 35% LTV | Real Estate | Commercial | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	0
Unpaid Principal Balance With No Related Allowance Recorded	139	139
Less Than 35% LTV | Real Estate | Multifamily | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	152	153
Unpaid Principal Balance With No Related Allowance Recorded	152	153
Equal to or Greater than 35% LTV | Real Estate | Commercial | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	9,608	9,745
Unpaid Principal Balance With No Related Allowance Recorded	10,423	10,560
Equal to or Greater than 35% LTV | Real Estate | Commercial | Pass
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	4,632	6,263
Recorded Investment With a Related Allowance Recorded	1,467	0
Unpaid Principal Balance With No Related Allowance Recorded	5,519	7,150
Unpaid Principal Balance With a Related Allowance Recorded	1,467	0
Impaired Financing Receivable, Related Allowance	(13)	0
Equal to or Greater than 35% LTV | Real Estate | Multifamily | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,230	0
Unpaid Principal Balance With No Related Allowance Recorded	1,230	0
Equal to or Greater than 35% LTV | Real Estate | Multifamily | Pass
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	45	1,309
Unpaid Principal Balance With No Related Allowance Recorded	515	1,780
Less Than 60% LTV | Real Estate | One-to-four family residential mortgage | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	241	251
Recorded Investment With a Related Allowance Recorded	671	997
Unpaid Principal Balance With No Related Allowance Recorded	241	251
Unpaid Principal Balance With a Related Allowance Recorded	671	997
Impaired Financing Receivable, Related Allowance	(18)	(49)
Less Than 60% LTV | Real Estate | One-to-four family residential mortgage | Pass
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,571	1,189
Recorded Investment With a Related Allowance Recorded	0	411
Unpaid Principal Balance With No Related Allowance Recorded	1,640	1,254
Unpaid Principal Balance With a Related Allowance Recorded	0	411
Impaired Financing Receivable, Related Allowance	0	(7)
Equal to or Greater than 60% LTV | Real Estate | One-to-four family residential mortgage | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	124	135
Unpaid Principal Balance With No Related Allowance Recorded	276	286
Equal to or Greater than 60% LTV | Real Estate | One-to-four family residential mortgage | Pass
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	132	136
Recorded Investment With a Related Allowance Recorded	0	268
Unpaid Principal Balance With No Related Allowance Recorded	159	161
Unpaid Principal Balance With a Related Allowance Recorded	0	268
Impaired Financing Receivable, Related Allowance	$ 0	$ (19)

Loans - Average Recorded Invest

Loans - Average Recorded Investment and Interest Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 20,339	$ 24,186	$ 20,586	$ 24,887
Impaired Financing Receivable, Interest Income, Cash Basis Method	205	263	410	512
Real Estate | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Average Recorded Investment	15,790	18,393	15,862	19,165
Impaired Financing Receivable, Interest Income, Cash Basis Method	160	213	319	410
Real Estate | One-to-four family residential mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Average Recorded Investment	2,894	3,344	3,058	3,434
Impaired Financing Receivable, Interest Income, Cash Basis Method	24	34	50	66
Real Estate | Multifamily
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Average Recorded Investment	1,435	1,951	1,444	1,811
Impaired Financing Receivable, Interest Income, Cash Basis Method	21	14	38	31
Real Estate | Home equity and lines of credit
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Average Recorded Investment	66	329	67	331
Impaired Financing Receivable, Interest Income, Cash Basis Method	0	2	2	5
Real Estate | Home equity and lines of credit | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	35	38	35	38
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	0	1	1
Real Estate | Home equity and lines of credit | Pass
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	31	37	32	38
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	0	0	1	1
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	254	0	255
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	2	0	3
Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Average Recorded Investment	154	169	155	146
Impaired Financing Receivable, Interest Income, Cash Basis Method	0	0	1	0
Commercial and Industrial | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	131	143	132	120
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	0	0	0	0
Commercial and Industrial | Special Mention
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	23	26	23	26
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	0	1	0
Less Than 35% LTV | Real Estate | Commercial | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	0	0	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	0	16	0	22
Less Than 35% LTV | Real Estate | Multifamily | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	152	154	152	155
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	1	2	2	3
Equal to or Greater than 35% LTV | Real Estate | Commercial | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	9,650	12,557	9,681	13,298
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	75	129	150	256
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	0	0	673
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	0	0	0
Equal to or Greater than 35% LTV | Real Estate | Commercial | Pass
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	4,664	5,836	5,197	5,194
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	65	68	129	132
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,476	0	984	0
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	20	0	40	0
Equal to or Greater than 35% LTV | Real Estate | Multifamily | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,237	0	825	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	16	0	28	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	450	0	300
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	0	0	0
Equal to or Greater than 35% LTV | Real Estate | Multifamily | Pass
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	46	58	467	60
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	4	4	8	8
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	1,289	0	1,296
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	8	0	20
Less Than 60% LTV | Real Estate | One-to-four family residential mortgage | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	246	585	248	451
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	4	6	4	12
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	674	1,398	782	1,439
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	4	9	8	19
Less Than 60% LTV | Real Estate | One-to-four family residential mortgage | Pass
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,374	622	1,312	626
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	13	8	27	15
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	204	0	273	0
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	2	0	3	0
Equal to or Greater than 60% LTV | Real Estate | One-to-four family residential mortgage | Substandard
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	129	278	131	392
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	0	5	3	10
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	189	0	253
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	0	0	0
Equal to or Greater than 60% LTV | Real Estate | One-to-four family residential mortgage | Pass
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	267	0	223	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	1	0	5	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	272	89	273
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	$ 0	$ 6	$ 0	$ 10

Loans - Narrative, Troubled Deb

Loans - Narrative, Troubled Debt Restructurings (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018USD ($)contract	Jun. 30, 2018USD ($)contract	Dec. 31, 2017USD ($)
Receivables [Abstract]
Number of relationships (contract)	0	0
Troubled debt restructurings | $	$ 17.3	$ 17.3	$ 18.3
Number of TDR loans restructured that subsequently defaulted (contract)		0

Deposits - Deposit Account Bala

Deposits - Deposit Account Balances (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Non-interest-bearing demand	$ 411,427	$ 407,267
Interest-bearing negotiable orders of withdrawal (NOW)	421,167	465,140
Savings and money market	1,162,218	1,225,643
Certificates of deposit	972,469	738,929
Total deposits	$ 2,967,281	$ 2,836,979

Deposits - Interest Expense On

Deposits - Interest Expense On Deposits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Banking and Thrift [Abstract]
Negotiable orders of withdrawal, savings, and money market	$ 2,312	$ 2,079	$ 4,455	$ 4,109
Certificates of deposit	3,738	1,820	6,806	3,410
Total interest expense on deposit accounts	$ 6,050	$ 3,899	$ 11,261	$ 7,519

Equity Incentive Plan - Stock O

Equity Incentive Plan - Stock Options Outstanding (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Number of Stock Options
Beginning Balance (shares)	4,620,687
Forfeited (shares)	(19,378)
Exercised (shares)	(1,105,157)
Ending Balance (shares)	3,496,152	4,620,687
Exercisable (shares)	2,661,611
Weighted Average Grant Date Fair Value
Beginning Balance (usd per share)	$ 3.51
Forfeited (usd per share)	2.99
Exercised (usd per share)	2.48
Ending Balance (usd per share)	3.83	$ 3.51
Exercisable (usd per share)	3.77
Weighted Average Exercise Price
Beginning Balance (usd per share)	11.82
Forfeited (usd per share)	9.84
Exercised (usd per share)	7.69
Ending Balance (usd per share)	13.14	$ 11.82
Exercisable (usd per share)	$ 12.77
Weighted Average Contractual Life (years)
Weighted Average Contractual Life, Outstanding	5 years 9 months 22 days	5 years 2 months 1 day
Weighted Average Contractual Life, Exercisable	5 years 6 months 7 days

Equity Incentive Plan - Narrati

Equity Incentive Plan - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 1.3	$ 1.6	$ 2.7	$ 3.2
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected future stock-based compensation expense	2.7		$ 2.7
Average period of expected future stock option expense			1 year 5 months 16 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected future stock-based compensation expense	$ 3.8		$ 3.8
Average period of expected future stock option expense			1 year 5 months 23 days

Equity Incentive Plan - Status

Equity Incentive Plan - Status of the Company's Restricted Share Awards (Details)	6 Months Ended
	Jun. 30, 2018$ / sharesshares
Number of Shares Awarded
Beginning Balance (shares) | shares	585,895
Vested (shares) | shares	(250,013)
Forfeited (shares) | shares	(1,760)
Ending Balance (shares) | shares	334,122
Weighted Average Grant Date Fair Value
Beginning Balance (usd per share) | $ / shares	$ 14.05
Vested (usd per share) | $ / shares	13.73
Forfeited (usd per share) | $ / shares	13.13
Ending Balance (usd per share) | $ / shares	$ 14.29

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	$ 10,167	$ 9,597
Measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	109,397	68,479
Trading securities	10,167	9,597
Total	635,718	523,702
Measured on a recurring basis | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	515,882	445,303
Measured on a recurring basis | GSE: Pass-through certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	243,086	178,295
Measured on a recurring basis | GSE: REMICs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	272,721	266,929
Measured on a recurring basis | Non-GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	75	79
Measured on a recurring basis | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	279	349
Measured on a recurring basis | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	109,118	68,130
Measured on a recurring basis | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	272	323
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Trading securities	10,167	9,597
Total	10,439	9,920
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | GSE: Pass-through certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	272	323
Measured on a recurring basis | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	109,397	68,479
Trading securities	0	0
Total	625,279	513,782
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	515,882	445,303
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | GSE: Pass-through certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	243,086	178,295
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | GSE: REMICs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	272,721	266,929
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Non-GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	75	79
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	279	349
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	109,118	68,130
Measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Trading securities	0	0
Total	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | GSE: Pass-through certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Non-GSE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale	0	0
Measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
Measured on a non-recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	850	850
Total	7,659	7,333
Measured on a non-recurring basis | Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	6,789	6,462
Measured on a non-recurring basis | Real Estate | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	5,943	4,645
Measured on a non-recurring basis | Real Estate | One-to-four family residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	777	1,735
Measured on a non-recurring basis | Real Estate | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	45	51
Measured on a non-recurring basis | Real Estate | Home equity and lines of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	24	31
Measured on a non-recurring basis | Commercial and Industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	20	21
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	0	0
Total	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real Estate | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real Estate | One-to-four family residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real Estate | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real Estate | Home equity and lines of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial and Industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	0	0
Total	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Real Estate | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Real Estate | One-to-four family residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Real Estate | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Real Estate | Home equity and lines of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Significant Other Observable Inputs (Level 2) | Commercial and Industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	850	850
Total	7,659	7,333
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	6,789	6,462
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Real Estate | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	5,943	4,645
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Real Estate | One-to-four family residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	777	1,735
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Real Estate | Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	45	51
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Real Estate | Home equity and lines of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	24	31
Measured on a non-recurring basis | Significant Unobservable Inputs (Level 3) | Commercial and Industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 20	$ 21

Fair Value Measurements - Quali

Fair Value Measurements - Qualitative Information for Level 3 Assets Measured at Fair Value on a Non-Recurring Basis (Details) $ in Thousands	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other real estate owned	$ 850	$ 850
Discount for costs to sell
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans	$ 6,809	$ 6,483
Appraisals | Discount Rate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other real estate owned, input	0.070	0.070
Appraisals | Discount for costs to sell | Discount Rate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans, input	0.070	0.070
Appraisals | Discount for quick sale | Discount Rate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans, input	0.100	0.100
Discounted cash flows | Discount Rate | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans, input	0.0313	0.0313
Discounted cash flows | Discount Rate | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans, input	0.0625	0.0650

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Impaired loans held-for-investment and held-for-sale with outstanding principal balances	$ 9,200		$ 8,800
Estimated fair value of impaired loans held-for-investment and held-for-sale	6,800		6,500
Decrease in net impairment charges	39	$ 127
Assets acquired through foreclosure, or deed in lieu of foreclosure	$ 850		$ 850

Fair Value Measurements - Estim

Fair Value Measurements - Estimated Fair Values of the Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financial assets:
Trading securities	$ 10,167	$ 9,597
Debt securities available-for-sale	625,279	513,782
Debt securities held-to-maturity	9,529	9,892
Financial liabilities:
Equity securities not been classified in the fair value	1,000	1,000
Carrying Value
Financial assets:
Cash and cash equivalents	58,733	57,839
Trading securities	10,167	9,597
Debt securities available-for-sale	625,279	513,782
Debt securities held-to-maturity	9,819	9,931
Equity securities	272	323
Federal Home Loan Bank of New York stock, at cost	27,718	25,046
Net loans held-for-investment	3,193,244	3,114,659
Financial liabilities:
Deposits	2,967,281	2,836,979
Borrowed funds	524,335	471,549
Advance payments by borrowers for taxes and insurance	18,009	14,798
Estimated Fair Value
Financial assets:
Cash and cash equivalents	58,733	57,839
Trading securities	10,167	9,597
Debt securities available-for-sale	625,279	513,782
Debt securities held-to-maturity	9,529	9,892
Equity securities	272	323
Federal Home Loan Bank of New York stock, at cost	27,718	25,046
Net loans held-for-investment	3,225,464	3,157,829
Financial liabilities:
Deposits	2,969,119	2,839,666
Borrowed funds	516,297	466,625
Advance payments by borrowers for taxes and insurance	18,009	14,798
Estimated Fair Value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	58,733	57,839
Trading securities	10,167	9,597
Debt securities available-for-sale	0	0
Debt securities held-to-maturity	0	0
Equity securities	272	323
Federal Home Loan Bank of New York stock, at cost	0	0
Net loans held-for-investment	0	0
Financial liabilities:
Deposits	0	0
Borrowed funds	0	0
Advance payments by borrowers for taxes and insurance	0	0
Estimated Fair Value | Significant Other Observable Inputs (Level 2)
Financial assets:
Cash and cash equivalents	0	0
Trading securities	0	0
Debt securities available-for-sale	625,279	513,782
Debt securities held-to-maturity	9,529	9,892
Equity securities	0	0
Federal Home Loan Bank of New York stock, at cost	27,718	25,046
Net loans held-for-investment	0	0
Financial liabilities:
Deposits	2,969,119	2,839,666
Borrowed funds	516,297	466,625
Advance payments by borrowers for taxes and insurance	18,009	14,798
Estimated Fair Value | Significant Unobservable Inputs (Level 3)
Financial assets:
Cash and cash equivalents	0	0
Trading securities	0	0
Debt securities available-for-sale	0	0
Debt securities held-to-maturity	0	0
Equity securities	0
Federal Home Loan Bank of New York stock, at cost	0	0
Net loans held-for-investment	3,225,464	3,157,829
Financial liabilities:
Deposits	0	0
Borrowed funds	0	0
Advance payments by borrowers for taxes and insurance	$ 0	$ 0

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Net income available to common stockholders	$ 10,612	$ 8,410	$ 21,056	$ 18,358
Weighted average shares outstanding-basic (shares)	46,184,918	45,252,136	45,983,895	45,137,791
Effect of non-vested restricted stock and stock options outstanding (shares)	925,059	1,579,226	1,072,404	1,741,467
Weighted average shares outstanding-diluted (shares)	47,109,977	46,831,362	47,056,299	46,879,258
Earnings per share-basic (usd per share)	$ 0.23	$ 0.19	$ 0.46	$ 0.41
Earnings per share-diluted (usd per share)	$ 0.23	$ 0.18	$ 0.45	$ 0.39
Anti-dilutive shares (shares)	858,844	50,000	872,294	45,000

Commitments (Details)

Commitments (Details) - Brooklyn, New York $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)ft²term
Operating Leased Assets [Line Items]
Operating lease area (in square feet) | ft²	1,800
Term of lease	15 years
Number of renewal terms | term	3
Renewal term	5 years
Minimum rent obligations | $	$ 5.8

Revenue Recognition (Details)

Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue from Contract with Customer [Abstract]
Service charges	$ 771	$ 768	$ 1,612	$ 1,640
ATM and card interchange fees	313	284	580	544
Investment fees	63	55	169	141
Total fees and service charges for customer services	1,147	1,107	2,361	2,325
Income on bank owned life insurance	914	1,010	1,868	3,468
Gains on securities transactions, net	313	256	473	664
Other	71	64	147	127
Total non-interest income	$ 2,445	$ 2,437	$ 4,849	$ 6,584