First Foundation (FFWM) 10-Q 10 Aug 20 2020 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Aug. 04, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Trading Symbol	FFWM
Entity Registrant Name	FIRST FOUNDATION INC.
Entity Central Index Key	0001413837
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock
Security Exchange Name	NASDAQ
Entity File Number	001-36461
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-8639702
Entity Address, Address Line One	18101 Von Karman Avenue
Entity Address, Address Line Two	Suite 700
Entity Address, City or Town	Irvine
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92612
City Area Code	949
Local Phone Number	202-4160
Entity Common Stock, Shares Outstanding		44,626,324
Document Quarterly Report	true
Document Transition Report	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 414,179	$ 65,387
Securities available-for-sale ("AFS")	863,778	1,014,966
Allowance for credit losses ("ACL")	(2,371)
Net securities	861,407	1,014,966
Loans held for sale	527,970	503,036
Loans, net of deferred fees	5,136,812	4,547,633
Allowance for credit losses	(28,129)	(20,800)
Net loans	5,108,683	4,526,833
Investment in FHLB stock	23,598	21,519
Deferred taxes	9,194	11,079
Premises and equipment, net	8,188	8,355
Goodwill and intangibles	96,181	97,191
Other assets	91,893	66,070
Total Assets	7,141,293	6,314,436
Liabilities:
Deposits	5,647,841	4,891,144
Borrowings	764,600	743,000
Accounts payable and other liabilities	90,131	66,423
Total Liabilities	6,502,572	5,700,567
Shareholders' Equity
Common Stock, par value $0.001: 70,000,000 shares authorized; 44,625,324 and 44,670,743 shares issued and outstanding at June 30, 2020 and December 31, 2019, respectively	45	45
Additional paid-in-capital	432,791	433,775
Retained earnings	200,582	175,773
Accumulated other comprehensive income, net of tax	5,303	4,276
Total Shareholders' Equity	638,721	613,869
Total Liabilities and Shareholders' Equity	$ 7,141,293	$ 6,314,436

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	70,000,000	70,000,000
Common stock, shares issued	44,625,324	44,670,743
Common stock, shares outstanding	44,625,324	44,670,743

CONSOLIDATED INCOME STATEMENTS

CONSOLIDATED INCOME STATEMENTS - UNAUDITED - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest income:
Loans	$ 55,134	$ 56,510	$ 110,018	$ 110,345
Securities	6,539	6,186	13,536	12,351
FHLB stock, fed funds sold and interest-bearing deposits	259	612	716	1,156
Total interest income	61,932	63,308	124,270	123,852
Interest expense:
Deposits	10,914	16,296	25,560	31,744
Borrowings	2,571	5,125	5,395	9,174
Total interest expense	13,485	21,421	30,955	40,918
Net interest income	48,447	41,887	93,315	82,934
Provision for credit losses	1,367	1,231	5,431	1,771
Net interest income after provision for credit losses	47,080	40,656	87,884	81,163
Noninterest income:
Revenue from contract with customers	$ 6,733	$ 7,136	$ 14,495	$ 13,930
Type of Revenue [Extensible List]	us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMember	us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMember	us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMember	us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMember
Other income	$ 2,236	$ 1,995	$ 5,149	$ 3,666
Total noninterest income	8,969	9,131	19,644	17,596
Noninterest expense:
Compensation and benefits	18,288	17,333	38,145	36,235
Occupancy and depreciation	5,855	5,167	11,367	10,035
Professional services and marketing costs	2,049	2,024	3,803	4,028
Customer service costs	1,622	4,283	3,994	7,672
Other expenses	3,123	3,475	6,500	7,257
Total noninterest expense	30,937	32,282	63,809	65,227
Income before taxes on income	25,112	17,505	43,719	33,532
Taxes on income	7,258	5,095	12,654	9,863
Net income	$ 17,854	$ 12,410	$ 31,065	$ 23,669
Net income per share:
Basic	$ 0.40	$ 0.28	$ 0.70	$ 0.53
Diluted	$ 0.40	$ 0.28	$ 0.69	$ 0.53
Shares used in computation:
Basic	44,620,716	44,625,673	44,645,189	44,583,503
Diluted	44,812,369	44,894,720	44,882,520	44,846,779

CONSOLIDATED STATEMENT OF CHANG

CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY - UNAUDITED - USD ($) $ in Thousands	Common Stock	Additional Paid-in-Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Beginning balance at Dec. 31, 2018	$ 44	$ 431,832	$ 128,461	$ (1,153)	$ 559,184
Beginning balance (in shares) at Dec. 31, 2018	44,496,007
Net income			23,669		23,669
Other comprehensive income (loss)				7,212	7,212
Stock based compensation		989			989
Cash dividend			(4,462)		(4,462)
Exercise of options		135			135
Exercise of options (in shares)	18,000
Stock grants - vesting of Restricted Stock Units	$ 1	(1)
Stock grants - vesting of Restricted Stock Units (in shares)	121,640
Stock repurchase		(24)			(24)
Stock repurchase (in shares)	(1,800)
Ending balance at Jun. 30, 2019	$ 45	432,931	147,668	6,059	586,703
Ending balance (in shares) at Jun. 30, 2019	44,633,847
Beginning balance at Dec. 31, 2019	$ 45	433,775	175,773	4,276	613,869
Beginning balance (in shares) at Dec. 31, 2019	44,670,743
Net income			31,065		31,065
Other comprehensive income (loss)				1,027	1,027
Stock based compensation		1,195			1,195
Cash dividend			(6,256)		(6,256)
Exercise of options		645			645
Exercise of options (in shares)	86,000
Stock grants - vesting of Restricted Stock Units (in shares)	92,915
Stock repurchase		(2,824)			(2,824)
Stock repurchase (in shares)	(224,334)
Ending balance at Jun. 30, 2020	$ 45	$ 432,791	$ 200,582	$ 5,303	$ 638,721
Ending balance (in shares) at Jun. 30, 2020	44,625,324

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - UNAUDITED - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 17,854	$ 12,410	$ 31,065	$ 23,669
Other comprehensive income:
Unrealized holding gains on securities arising during the period	678	11,265	1,450	10,191
Other comprehensive income before tax	678	11,265	1,450	10,191
Income tax expense related to items of other comprehensive income	198	3,294	423	2,979
Other comprehensive income	480	7,971	1,027	7,212
Total comprehensive income	$ 18,334	$ 20,381	$ 32,092	$ 30,881

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash Flows from Operating Activities:
Net income	$ 31,065	$ 23,669
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses - loans	3,060	1,771
Provision for credit losses - securities AFS	2,371
Stock-based compensation expense	1,195	989
Depreciation and amortization	1,547	1,480
Deferred tax expense	1,462	685
Amortization of core deposit intangible	1,010	1,228
Amortization of mortgage servicing rights - net	705	320
Amortization of premiums on purchased loans - net	(4,169)	(3,889)
Gain on sale of REO		(263)
Gain from hedging activities	(224)	(355)
Increase in other assets	(11,266)	(1,339)
Decrease in accounts payable and other liabilities	1,322	(460)
Net cash provided by operating activities	28,078	23,836
Cash Flows from Investing Activities:
Net increase in loans	(594,872)	(434,209)
Proceeds from sale of REO		613
Purchase of premises and equipment	(1,380)	(1,181)
Recovery of allowance for credit losses	564	363
Purchases of AFS securities	(6,757)	(400)
Maturities of AFS securities	155,376	46,957
Sale (purchases) of FHLB stock, net	(2,079)	1,083
Net cash used in investing activities	(449,148)	(386,774)
Cash Flows from Financing Activities:
Increase in deposits	756,697	210,974
Net increase in FHLB advances	21,600	159,000
Line of credit net change - borrowings (paydowns), net		15,000
Dividends paid	(6,256)	(4,462)
Proceeds from sale of stock, net	645	135
Repurchase of stock	(2,824)	(24)
Net cash provided by financing activities	769,862	380,623
Increase (decrease) in cash and cash equivalents	348,792	17,685
Cash and cash equivalents at beginning of year	65,387	67,312
Cash and cash equivalents at end of period	414,179	84,997
Supplemental disclosures of cash flow information:
Income taxes	185	8,784
Interest	30,289	37,456
Noncash transactions:
Transfer of loans to loans held for sale	14,666	101,444
Chargeoffs against allowance for credit losses	$ 1,055	$ 934

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2020
Accounting Policies [Abstract]
Basis of Presentation	NOTE 1: BASIS OF PRESENTATION The consolidated financial statements include First Foundation Inc. (“FFI”) and its wholly owned subsidiaries: First Foundation Advisors (“FFA”) and First Foundation Bank (“FFB” or the “Bank”) and the wholly owned subsidiaries of FFB, First Foundation Insurance Services (“FFIS”) and Blue Moon Management, LLC (collectively referred to as the “Company”). All intercompany balances and transactions have been eliminated in consolidation. The results of operations reflect any interim adjustments, all of which are of a normal recurring nature and which, in the opinion of management, are necessary for a fair presentation of the results for the interim period presented. The results for the 2020 interim periods are not necessarily indicative of the results expected for the full year. The consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America and prevailing practices within the banking industry. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and revenues and expenses for the period. Actual results could differ significantly from those estimates. The accompanying unaudited consolidated financial statements include all information and footnotes required for interim financial statement presentation. These financial statements assume that readers have read the most recent Annual Report on Form 10-K which contains the latest available audited consolidated financial statements and notes thereto as of and for the year ended December 31, 2019. Certain reclassifications have been made to the prior year consolidated financial statements to conform to the 2020 presentation. Recently Adopted Accounting Guidance Measurement of Credit Losses on Financial Instruments: In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The Company adopted the amendments within ASU 2016-13 on January 1, 2020 using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. Results for the periods beginning after that date are presented under Topic 326, while prior period amounts continue to be reported in accordance with previously applicable generally accepted accounting principles (“GAAP”). There was not any cumulative effect adjustment upon adoption. The instruments that were accounted for as purchased credit impaired (“PCI”) are transitioned under the new purchased credit deteriorated (“PCD”) model using the prospective transition approach. The Company applied the prospective transition approach for debt securities for which other than temporary impairment had been recognized prior to January 1, 2020. As a result, the amortized cost basis remains the same before and after the effective date. Allowance for credit losses on investment securities: On January 1, 2020, the Company adopted the amendments within ASU 2016-13, which replaces the legacy US GAAP Other Than Temporary Impairment (“OTTI”) model with a credit loss model. The credit loss model under Accounting Standards Codification (“ASC”) 326-30, applicable to debt securities available for sale (“Securities AFS”), requires recognition of credit losses through an allowance account, but retains the concept from the OTTI model that credit losses are recognized once securities become impaired. For Securities AFS, a decline in fair value due to credit loss results in recognition of an allowance for credit losses. Impairment may result from credit deterioration of the issuer or collateral underlying the security. The assessment of determining if a decline in fair value resulted from a credit loss is performed at the individual security level. Among other factors, the Company considers: 1) the extent to which the fair value is less than the amortized cost basis; 2) the financial condition and near term prospects of the issuer, including consideration of relevant financial metrics or ratios of the issuer; 3) any adverse conditions related to an industry or geographic area of an issuer; 4) any changes to the rating of the security by a rating agency; and 5) any past due principal or interest payments from the issuer. If an assessment of the above factors indicates that a credit loss exists, the Company records an allowance for credit losses for the excess of the amortized cost basis over the present value of cash flows expected to be collected, limited to the amount that the security’s fair value is less than its amortized cost basis. Subsequent changes in the allowance for credit losses are recorded as a provision for (or reversal of) credit loss expense. Interest accruals and amortization and accretion of premiums and discounts are suspended when the credit loss is recognized in earnings. Any interest received after the security has been placed on nonaccrual status is recognized on a cash basis. Accrued interest receivable on Securities AFS is excluded from the estimate of expected credit losses. The provision for credit losses on the consolidated income statement includes the provisions for credit losses for loans and securities AFS. For the six months ending June 30, 2020, the provision for credit losses for loans was $3 million and the provision for credit losses for Securities AFS was $2.4 million, resulting in a total provision for credit losses of $5.4 million. Recent Accounting Pronouncements In March 2020, the FASB issued ASU 2020-04, “ Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting” In November 2019, the FASB issued ASU 2019-12, “ Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes” Topic 740 In July 2019, the FASB issued ASU 2019-07, Codification Updates to SEC Sections Disclosure Update and Simplification Investment Company Reporting Modernization

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 2: FAIR VALUE MEASUREMENTS Assets Measured at Fair Value on a Recurring Basis Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Current accounting guidance establishes a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels of inputs that may be used to measure fair values: Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. Level 2: Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect the Company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. Securities available for sale and effective with the adoption of ASU 2016-01 on January 1, 2018, investments in equity securities are measured at fair value on a recurring basis depending upon whether the inputs are Level 1, 2 or 3 as described above. The following tables show the recorded amounts of assets and liabilities measured at fair value on a recurring basis as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurement Level (dollars in thousands) ​ Total ​ Level 1 ​ Level 2 ​ Level 3 June 30, 2020: ​ ​ ​ ​ Investment securities available for sale: ​ ​ ​ ​ Agency mortgage-backed securities ​ $ 773,131 ​ $ — ​ $ 773,131 ​ $ — Beneficial interest – FHLMC securitizations ​ 28,956 ​ — ​ — ​ 28,956 Corporate bonds ​ 57,827 ​ — ​ 57,827 ​ — Other ​ 1,493 ​ 407 ​ 1,086 ​ — Investment in equity securities ​ 299 ​ 299 ​ — ​ — Total assets at fair value on a recurring basis ​ $ 861,706 ​ $ 706 ​ $ 832,044 ​ $ 28,956 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivatives: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest rate swaps ​ $ 11,688 ​ $ — ​ $ 11,688 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investment securities available for sale: ​ ​ ​ ​ Agency mortgage-backed securities ​ $ 914,977 ​ $ — ​ $ 914,977 ​ $ — Beneficial interest – FHLMC securitizations ​ 42,706 ​ — ​ — ​ 42,706 Corporate bonds ​ 55,834 ​ — ​ 55,834 ​ — Other ​ 1,449 ​ 403 ​ 1,046 ​ — Investment in equity securities ​ 434 ​ 434 ​ — ​ — Total assets at fair value on a recurring basis ​ $ 1,015,400 ​ $ 837 ​ $ 971,857 ​ $ 42,706 ​ The decrease in Level 3 assets from December 31, 2019 was due to Beneficial interest – FHLMC securitization paydowns. Due to a change in expected cash flows on an interest only strip security, a $2.4 million allowance was taken in the first six months of 2020. Assets Measured at Fair Value on a Nonrecurring Basis From time to time, we may be required to measure other assets at fair value on a nonrecurring basis. These nonrecurring fair value adjustments typically involve application of lower of cost or market accounting or write-downs of individual assets. Loans Real Estate Owned Mortgage Servicing Rights. Fair Value of Financial Instruments FASB ASC 825-10, “Disclosures about Fair Value of Financial Instruments” requires disclosure of the fair value information about financial instruments, whether or not recognized in the balance sheet, for which it is practicable to estimate such value. The methodologies for estimating the fair value of financial assets and financial liabilities measured at fair value on a recurring and non-recurring basis are discussed above. The estimated fair value amounts have been determined by management using available market information and appropriate valuation methodologies and are based on the exit price notion set forth by ASU 2016-01. In cases where quoted market prices are not available, fair values are based on estimates using present value or other market value techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instrument. The aggregate fair value amounts presented below do not represent the underlying value of the Company. Fair value estimates are made at a discrete point in time based on relevant market information and other information about the financial instruments. Because no active market exists for a significant portion of our financial instruments, fair value estimates are based in large part on judgments we make primarily regarding current economic conditions, risk characteristics of various financial instruments, prepayment rates, and future expected loss experience. These estimates are subjective in nature and invariably involve some inherent uncertainties. Additionally, unexpected changes in events or circumstances can occur that could require us to make changes to our assumptions and which, in turn, could significantly affect and require us to make changes to our previous estimates of fair value. In addition, the fair value estimates are based on existing on and off-balance sheet financial instruments without attempting to estimate the value of existing and anticipated future customer relationships and the value of assets and liabilities that are not considered financial instruments, such as premises and equipment and other real estate owned. The following methods and assumptions were used to estimate the fair value of financial instruments: Cash and Cash Equivalents Interest-Bearing Deposits with Financial Institutions Investment Securities Available for Sale Federal Home Loan Bank Stock. Loans Held For Sale. Loans Held for Investment Deposits Borrowings Interest rate swaps The carrying amounts and estimated fair values of financial instruments are as follows as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying ​ Fair Value Measurement Level (dollars in thousands) ​ Value ​ 1 ​ 2 ​ 3 ​ Total June 30, 2020: ​ ​ ​ ​ ​ Assets: ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 414,179 ​ $ 414,179 ​ $ — ​ $ — ​ $ 414,179 Securities AFS, net ​ 861,407 ​ 407 ​ 832,044 ​ 28,956 ​ 861,407 Loans held for sale ​ 527,970 ​ — ​ 533,565 ​ — ​ 533,565 Loans, net ​ 5,108,683 ​ — ​ — ​ 5,163,076 ​ 5,163,076 Investment in FHLB stock ​ 23,598 ​ — ​ 23,598 ​ — ​ 23,598 Investment in equity securities ​ 299 ​ 299 ​ — ​ — ​ 299 Liabilities: ​ ​ ​ ​ ​ Deposits ​ $ 5,647,841 ​ $ 3,825,306 ​ $ 1,832,007 ​ $ — ​ $ 5,657,313 Borrowings ​ 764,600 ​ — ​ 760,000 ​ 4,600 ​ 764,600 Interest rate swaps ​ ​ 11,688 ​ ​ — ​ ​ 11,688 ​ ​ — ​ ​ 11,688 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Assets: ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 65,387 ​ $ 65,387 ​ $ — ​ $ — ​ $ 65,387 Securities AFS ​ 1,014,966 ​ 403 ​ 971,857 ​ 42,706 ​ 1,014,966 Loans held for sale ​ 503,036 ​ — ​ 506,750 ​ — ​ 506,750 Loans, net ​ 4,526,833 ​ — ​ — ​ 4,573,516 ​ 4,573,516 Investment in FHLB stock ​ 21,519 ​ — ​ 21,519 ​ — ​ 21,519 Investment in equity securities ​ 434 ​ 434 ​ — ​ — ​ 434 Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Deposits ​ $ 4,891,144 ​ $ 2,913,493 ​ $ 1,977,652 ​ $ — ​ $ 4,891,145 Borrowings ​ 743,000 ​ — ​ 733,000 ​ 10,000 ​ 743,000 ​

Securities

Securities	6 Months Ended
	Jun. 30, 2020
Investments Debt And Equity Securities [Abstract]
Securities	NOTE 3: SECURITIES The following table provides a summary of the Company’s securities AFS portfolio as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized ​ Gross Unrealized ​ Allowance for ​ Estimated (dollars in thousands) ​ Cost ​ Gains ​ Losses ​ Credit Losses ​ Fair Value June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Agency mortgage-backed securities ​ $ 761,247 ​ $ 11,884 ​ $ — ​ $ — ​ $ 773,131 Beneficial interests in FHLMC securitization ​ 36,637 ​ 241 ​ (5,551) ​ (2,371) ​ 28,956 Corporate bonds ​ 57,000 ​ 935 ​ (108) ​ — ​ 57,827 Other ​ 1,399 ​ 94 ​ — ​ — ​ 1,493 Total ​ $ 856,283 ​ $ 13,154 ​ $ (5,659) ​ $ (2,371) ​ $ 861,407 December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Agency mortgage-backed securities ​ $ 905,949 ​ $ 9,174 ​ $ (146) ​ $ — ​ $ 914,977 Beneficial interests in FHLMC securitization ​ 47,586 ​ 1,801 ​ (6,681) ​ — ​ 42,706 Corporate bonds ​ 54,000 ​ 1,834 ​ — ​ — ​ 55,834 Other ​ 1,386 ​ 63 ​ — ​ — ​ 1,449 Total ​ $ 1,008,921 ​ $ 12,872 ​ $ (6,827) ​ $ — ​ $ 1,014,966 ​ US Treasury securities of $0.4 million as of June 30, 2020 that are included in the table above as Other are pledged as collateral to the State of California to meet regulatory requirements related to the Bank’s trust operations. As of June 30, 2020, $131 million of agency mortgage-backed securities are pledged as collateral as support for the Bank’s obligations under loan sales and securitization agreements entered into in 2019 and 2018. The tables below indicate, as of June 30, 2020 and December 31, 2019, the gross unrealized losses and fair values of our investments, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities with Unrealized Loss at June 30, 2020 ​ ​ Less than 12 months ​ 12 months or more ​ Total ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized (dollars in thousands) Value Loss Value Loss Value Loss Beneficial interests in FHLMC securitization ​ $ 13,954 ​ $ (5,119) ​ $ 346 ​ $ (432) ​ $ 14,300 ​ $ (5,551) Corporate bonds ​ ​ 14,892 ​ ​ (108) ​ ​ — ​ ​ — ​ ​ 14,892 ​ ​ (108) Total temporarily impaired securities ​ $ 28,846 ​ ​ (5,227) ​ $ 346 ​ $ (432) ​ $ 29,192 ​ $ (5,659) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities with Unrealized Loss at December 31, 2019 ​ ​ Less than 12 months ​ 12 months or more ​ Total ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized (dollars in thousands) Value Loss Value Loss Value Loss Agency mortgage-backed securities $ 5,488 $ (2) $ 13,880 $ (144) $ 19,368 $ (146) Beneficial interests in FHLMC securitization ​ 20,609 ​ (2,856) ​ 3,220 ​ (3,825) ​ 23,829 ​ (6,681) Total temporarily impaired securities ​ $ 26,097 ​ $ (2,858) ​ $ 17,100 ​ $ (3,969) ​ $ 43,197 ​ $ (6,827) ​ Unrealized losses in agency mortgage-backed securities, beneficial interests in FHLMC securitizations, and other securities have not been recognized into income because the issuer bonds are of high credit quality, management does not intend to sell, it is not more likely than not that management would be required to sell the securities prior to their anticipated recovery, and the decline in fair value is largely due to changes in discount rates and assumptions regarding future interest rates. The fair value is expected to recover as the bonds approach maturity. The assessment of determining if a decline in fair value resulted from a credit loss is performed at the individual security level. Among other factors considered are: 1) the extent to which the fair value is less than the amortized cost basis; 2) the financial condition and near term prospects of the issuer, including consideration of relevant financial metrics or ratios of the issuer; 3) any adverse conditions related to an industry or geographic area of an issuer; 4) any changes to the rating of the security by a rating agency; and 5) any past due principal or interest payments from the issuer. If an assessment of the above factors indicates that a credit loss exists, the Company records an allowance for credit losses for the excess of the amortized cost basis over the present value of cash flows expected to be collected, limited to the amount that the security’s fair value is less than its amortized cost basis. Subsequent changes in the allowance for credit losses are recorded as a provision for (or reversal of) credit loss expense. Interest accruals and amortization and accretion of premiums and discounts are suspended when the credit loss is recognized in earnings. Any interest received after the security has been placed on nonaccrual status is recognized on a cash basis. ​ ​ ​ ​ ​ Allowance for credit losses - Investments ​ ​ (dollars in thousands) ​ ​ ​ Balance: December 31, 2019 $ — Provision for credit losses ​ 2,371 Balance: June 30, 2020 $ 2,371 ​ Due to a change in expected cash flows of an interest only strip security, a $2.4 million allowance was taken in the first six months of 2020. The allowance was included as a charge in provision for credit losses on the consolidated income statement. The scheduled maturities of securities AFS and the related weighted average yields were as follows for the periods indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Less than 1 Through 5 Through After ​ ​ (dollars in thousands) ​ 1 Year ​ 5 years ​ 10 Years ​ 10 Years ​ Total June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized Cost: ​ ​ ​ ​ ​ ​ Corporate bonds ​ $ — ​ $ — ​ $ 57,000 ​ $ — ​ $ 57,000 ​ Other ​ 400 ​ — ​ 999 ​ — ​ 1,399 ​ Total ​ $ 400 ​ $ — ​ $ 57,999 ​ $ — ​ $ 58,399 ​ Weighted average yield ​ 2.16 % — % 5.35 % — % 5.33 % Estimated Fair Value: ​ ​ ​ ​ ​ ​ Corporate bonds ​ $ — ​ $ — ​ $ 57,827 ​ $ — ​ $ 57,827 ​ Other ​ 407 ​ — ​ 1,086 ​ — ​ 1,493 ​ Total ​ $ 407 ​ $ — ​ $ 58,913 ​ $ — ​ $ 59,320 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Less than 1 Through 5 Through After ​ ​ (dollars in thousands) ​ 1 Year ​ 5 years ​ 10 Years ​ 10 Years ​ Total December 31, 2019 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized Cost: ​ ​ ​ ​ ​ ​ Corporate bonds ​ $ — ​ $ — ​ $ 54,000 ​ $ — ​ $ 54,000 ​ Other ​ — ​ 400 ​ 986 ​ — ​ 1,386 ​ Total ​ $ — ​ $ 400 ​ $ 54,986 ​ $ — ​ $ 55,386 ​ Weighted average yield ​ — % 2.25 % 5.29 % — % 5.27 % Estimated Fair Value: ​ ​ ​ ​ ​ ​ Corporate bonds ​ $ — ​ $ — ​ $ 55,834 ​ $ — ​ $ 55,834 ​ Other ​ — ​ 403 ​ 1,046 ​ — ​ 1,449 ​ Total ​ $ — ​ $ 403 ​ $ 56,880 ​ $ — ​ $ 57,283 ​ ​ Agency mortgage-backed securities and beneficial interests in FHLMC securitizations are excluded from the above table because such securities are not due at a single maturity date. The weighted average yield of the agency mortgage-backed securities and beneficial interests as of June 30, 2020 was 2.48%.

Loans

Loans	6 Months Ended
	Jun. 30, 2020
Receivables [Abstract]
Loans	NOTE 4: LOANS The following is a summary of our loans as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, (dollars in thousands) 2020 2019 Outstanding principal balance: ​ ​ ​ ​ Loans secured by real estate: ​ ​ Residential properties: ​ ​ Multifamily ​ $ 2,556,332 ​ $ 2,143,919 Single family ​ 839,537 ​ 871,181 Total real estate loans secured by residential properties ​ 3,395,869 ​ 3,015,100 Commercial properties ​ 774,939 ​ 834,042 Land ​ 65,094 ​ 70,257 Total real estate loans ​ 4,235,902 ​ 3,919,399 Commercial and industrial loans ​ 875,464 ​ 600,213 Consumer loans ​ 18,640 ​ 16,273 Total loans ​ 5,130,006 ​ 4,535,885 Premiums, discounts and deferred fees and expenses ​ 6,806 ​ 11,748 Total ​ $ 5,136,812 ​ $ 4,547,633 ​ In 2017 and 2018 the Company purchased loans, for which there was, at acquisition, evidence of deterioration of credit quality since origination and it was probable, at acquisition, that all contractually required payments would not be collected. As of December 31, 2019, the principal balance shown above is net of unaccreted discount related to loans acquired in acquisitions of $8.4 million. The carrying amount of these PCD loans is as follows as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, December 31, (dollars in thousands) 2020 2019 Outstanding principal balance: ​ ​ ​ ​ Loans secured by real estate: ​ ​ Residential properties ​ $ 291 ​ $ 366 Commercial properties ​ 5,529 ​ 6,146 Land ​ — ​ 1,058 Total real estate loans ​ 5,820 ​ 7,570 Commercial and industrial loans ​ 317 ​ 603 Total loans ​ 6,137 ​ 8,173 Unaccreted discount on purchased credit deteriorated loans ​ — ​ (3,657) Total ​ $ 6,137 ​ $ 4,516 ​ ​ The following table summarizes our delinquent and nonaccrual loans as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Past Due and Still Accruing ​ ​ ​ ​ Total Past ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 90 Days ​ ​ ​ ​ Due and ​ ​ ​ ​ ​ ​ (dollars in thousands) 30–59 Days 60-89 Days or More Nonaccrual Nonaccrual Current Total June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ ​ ​ Residential properties ​ $ 5,572 ​ $ — ​ $ — ​ $ 7,027 ​ $ 12,599 ​ $ 3,383,270 ​ $ 3,395,869 Commercial properties ​ 1,255 ​ 4,159 ​ — ​ 2,320 ​ 7,734 ​ 767,205 ​ 774,939 Land ​ — ​ 455 ​ — ​ 500 ​ 955 ​ 64,139 ​ 65,094 Commercial and industrial loans ​ 2,051 ​ 685 ​ — ​ 5,648 ​ 8,384 ​ 867,080 ​ 875,464 Consumer loans ​ 350 ​ — ​ — ​ 17 ​ 367 ​ 18,273 ​ 18,640 Total ​ $ 9,228 ​ $ 5,299 ​ $ — ​ $ 15,512 ​ $ 30,039 ​ $ 5,099,967 ​ $ 5,130,006 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Percentage of total loans ​ 0.18 % 0.10 % — % 0.30 % 0.59 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ ​ ​ Residential properties ​ $ 89 ​ $ 13 ​ $ — ​ $ 1,743 ​ $ 1,845 ​ $ 3,013,255 ​ $ 3,015,100 Commercial properties ​ 7,586 ​ — ​ 403 ​ 2,410 ​ 10,399 ​ 823,643 ​ 834,042 Land ​ — ​ — ​ — ​ — ​ — ​ 70,257 ​ 70,257 Commercial and industrial loans ​ 695 ​ 2,007 ​ — ​ 8,714 ​ 11,416 ​ 588,797 ​ 600,213 Consumer loans ​ 22 ​ 3 ​ — ​ — ​ 25 ​ 16,248 ​ 16,273 Total ​ $ 8,392 ​ $ 2,023 ​ $ 403 ​ $ 12,867 ​ $ 23,685 ​ $ 4,512,200 ​ $ 4,535,885 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Percentage of total loans ​ 0.19 % 0.04 % 0.01 % 0.28 % 0.52 % ​ ​ The following table presents the loans classified as troubled debt restructurings (“TDR”) by accrual and nonaccrual status as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 (dollars in thousands) ​ Accrual ​ Nonaccrual ​ Total ​ Accrual ​ Nonaccrual ​ Total Residential loans $ 1,200 $ — $ 1,200 $ 1,200 $ — $ 1,200 Commercial real estate loans ​ 1,148 ​ 1,374 ​ 2,522 ​ 1,188 ​ 2,166 ​ 3,354 Commercial and industrial loans ​ 606 ​ 3,875 ​ 4,481 ​ 557 ​ 2,972 ​ 3,529 Total ​ $ 2,954 ​ $ 5,249 ​ $ 8,203 ​ $ 2,945 ​ $ 5,138 ​ $ 8,083 ​ The following table provides information on loans that were modified as TDRs for the following periods: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Outstanding Recorded Investment ​ ​ ​ (dollars in thousands) ​ Number of loans ​ Pre-Modification ​ Post-Modification ​ Financial Impact Six Months Ended June 30, 2020: ​ ​ ​ Commercial and industrial loans 1 ​ $ 521 ​ 521 ​ $ — Total 1 ​ $ 521 ​ $ 521 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Outstanding Recorded Investment ​ ​ ​ (dollars in thousands) ​ Number of loans ​ Pre-Modification ​ Post-Modification ​ Financial Impact Year Ended December 31, 2019 ​ ​ ​ Residential loans ​ 1 ​ $ 1,200 ​ $ 1,200 ​ $ — Commercial real estate loans 1 ​ ​ 2,872 ​ ​ 2,872 ​ ​ — Commercial and industrial loans 7 ​ 1,754 ​ 1,754 ​ — Total 9 ​ $ 5,826 ​ $ 5,826 ​ $ — ​ All of these loans were classified as a TDR as a result of a reduction in required principal payments and an extension of the maturity date of the loans. These loans have been paying in accordance with the terms of their restructure.

Allowance for Credit Losses

Allowance for Credit Losses	6 Months Ended
	Jun. 30, 2020
Receivables [Abstract]
Allowance for Credit Losses	NOTE 5: ALLOWANCE FOR CREDIT LOSSES The following is a roll forward of the Bank’s allowance for credit losses related to loans for the following periods: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning ​ Adoption of Provision for ​ ​ ​ ​ Ending (dollars in thousands) ​ Balance ​ ASC 326 ​ Credit Losses ​ Charge-offs ​ Recoveries ​ Balance Quarter Ended June 30, 2020: ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ ​ ​ Residential properties ​ $ 6,026 ​ $ — ​ $ 730 ​ $ — ​ $ — ​ $ 6,756 Commercial properties ​ 1,178 ​ — ​ 8,133 ​ — ​ — ​ 9,311 Land ​ 1,252 ​ — ​ 2,116 ​ — ​ — ​ 3,368 Commercial and industrial loans ​ 10,125 ​ — ​ (1,225) ​ (525) ​ 113 ​ 8,488 Consumer loans ​ 204 ​ — ​ 2 ​ — ​ — ​ 206 Total ​ $ 18,785 ​ $ — ​ $ 9,756 ​ $ (525) ​ $ 113 ​ $ 28,129 Six Months Ended June 30, 2020: ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ ​ Residential properties ​ $ 8,423 ​ $ (363) ​ $ (1,304) ​ $ — ​ $ — ​ $ 6,756 Commercial properties ​ 4,166 ​ (3,760) ​ 8,905 ​ — ​ — ​ 9,311 Land ​ 573 ​ (92) ​ 2,887 ​ — ​ — ​ 3,368 Commercial and industrial loans ​ 7,448 ​ — ​ 1,531 ​ (1,055) ​ 564 ​ 8,488 Consumer loans ​ 190 ​ — ​ 16 ​ — ​ — ​ 206 Total ​ $ 20,800 ​ $ (4,215) ​ $ 12,035 ​ $ (1,055) ​ $ 564 ​ $ 28,129 Year Ended December 31, 2019: ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ ​ Residential properties ​ $ 9,216 ​ $ — ​ $ (793) ​ $ — ​ $ — ​ $ 8,423 Commercial properties ​ 4,547 ​ — ​ (381) ​ — ​ — ​ 4,166 Land ​ 391 ​ — ​ 182 ​ — ​ — ​ 573 Commercial and industrial loans ​ 4,628 ​ — ​ 3,653 ​ (2,687) ​ 1,854 ​ 7,448 Consumer loans ​ 218 ​ — ​ (24) ​ (5) ​ 1 ​ 190 Total ​ $ 19,000 ​ $ — ​ $ 2,637 ​ $ (2,692) ​ $ 1,855 ​ $ 20,800 ​ ​ The following table presents the balance in the allowance for credit losses and the recorded investment in loans by impairment method as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for Credit Losses ​ Unaccreted ​ ​ ​ ​ ​ ​ ​ ​ Purchased ​ ​ ​ ​ Credit ​ ​ Evaluated for Impairment ​ Credit ​ ​ ​ ​ Component (dollars in thousands) Individually Collectively Deteriorated Total Other Loans June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 34 ​ $ 6,722 ​ $ — ​ $ 6,756 ​ $ ​ Commercial properties ​ 385 ​ 8,926 ​ — ​ 9,311 ​ ​ Land ​ — ​ 3,368 ​ — ​ 3,368 ​ ​ Commercial and industrial loans ​ 784 ​ 7,704 ​ — ​ 8,488 ​ ​ Consumer loans ​ — ​ 206 ​ — ​ 206 ​ ​ Total ​ $ 1,203 ​ $ 26,926 ​ $ — ​ $ 28,129 ​ $ ​ Loans: ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 5,556 ​ $ 3,390,022 ​ $ 291 ​ $ 3,395,869 ​ $ ​ Commercial properties ​ 6,546 ​ 762,864 ​ 5,529 ​ 774,939 ​ ​ Land ​ 500 ​ 64,594 ​ — ​ 65,094 ​ ​ Commercial and industrial loans ​ 6,067 ​ 869,080 ​ 317 ​ 875,464 ​ ​ Consumer loans ​ 17 ​ 18,623 ​ — ​ 18,640 ​ ​ Total ​ $ 18,686 ​ $ 5,105,183 ​ $ 6,137 ​ $ 5,130,006 ​ $ ​ December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ — ​ $ 8,423 ​ $ — ​ $ 8,423 ​ $ 1,013 Commercial properties ​ 107 ​ 4,059 ​ — ​ 4,166 ​ 1,048 Land ​ — ​ 573 ​ — ​ 573 ​ 6 Commercial and industrial loans ​ 763 ​ 6,685 ​ — ​ 7,448 ​ 277 Consumer loans ​ — ​ 190 ​ — ​ 190 ​ 1 Total ​ $ 870 ​ $ 19,930 ​ $ — ​ $ 20,800 ​ $ 2,345 Loans: ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 2,897 ​ $ 3,012,203 ​ $ — ​ $ 3,015,100 ​ $ 189,339 Commercial properties ​ 6,689 ​ 824,026 ​ 3,327 ​ 834,042 ​ 201,370 Land ​ — ​ 69,476 ​ 781 ​ 70,257 ​ 28,660 Commercial and industrial loans ​ 9,316 ​ 590,489 ​ 408 ​ 600,213 ​ 24,143 Consumer loans ​ — ​ 16,273 ​ — ​ 16,273 ​ 253 Total ​ $ 18,902 ​ $ 4,512,467 ​ $ 4,516 ​ $ 4,535,885 ​ $ 443,765 ​ The column labeled “Unaccreted Credit Component Other Loans” represents the amount of unaccreted credit component discount for the other loans acquired in a business combination, and the stated principal balance of the related loans. The discount is equal to 0.53% of the stated principal balance of these loans as of December 31, 2019. In addition to this unaccreted credit component discount, an additional $0.3 million of ACL has been provided for these loans as of December 31, 2019. Assets that were previously accounted for as PCI under ASC 310-30 are accounted for as PCD assets under the new impairment standard. When instruments that were accounted for as PCI are transitioned to the new PCD model, a “gross up” is recorded to the amortized cost basis of the asset and the allowance for credit losses of these instruments. If any noncredit discount still exists, it is accredited to interest income using the interest method. The Bank categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as current financial information, historical payment experience, collateral adequacy, credit documentation, and current economic trends, among other factors. The Bank analyzes loans individually by classifying the loans as to credit risk. This analysis typically includes larger, non-homogeneous loans such as loans secured by multifamily or commercial real estate and commercial and industrial loans. This analysis is performed on an ongoing basis as new information is obtained. The Bank uses the following definitions for risk ratings: Pass: Special Mention: Substandard: Loans individually evaluated Loans listed as pass include larger non-homogeneous loans not meeting the risk rating definitions above and smaller, homogeneous loans not assessed on an individual basis. Based on the most recent analysis performed, the risk category of loans by class of loans is as follows as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans Individually ​ ​ ​ (dollars in thousands) Pass Special Mention Substandard Loans Evaluated Total June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 3,383,143 ​ $ — ​ $ 7,170 ​ $ 5,556 ​ $ 3,395,869 Commercial properties ​ 760,071 ​ 663 ​ 7,659 ​ 6,546 ​ 774,939 Land ​ 64,594 ​ — ​ — ​ 500 ​ 65,094 Commercial and industrial loans ​ 859,832 ​ 5,824 ​ 3,741 ​ 6,067 ​ 875,464 Consumer loans ​ 18,623 ​ — ​ — ​ 17 ​ 18,640 Total ​ $ 5,086,263 ​ $ 6,487 ​ $ 18,570 ​ $ 18,686 ​ $ 5,130,006 December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 3,012,203 ​ $ — ​ $ — ​ $ 2,897 ​ $ 3,015,100 Commercial properties ​ 821,425 ​ 679 ​ 5,249 ​ 6,689 ​ 834,042 Land ​ 69,476 ​ — ​ 781 ​ — ​ 70,257 Commercial and industrial loans ​ 579,153 ​ 8,202 ​ 3,542 ​ 9,316 ​ 600,213 Consumer loans ​ 16,273 ​ — ​ — ​ — ​ 16,273 Total ​ $ 4,498,530 ​ $ 8,881 ​ $ 9,572 ​ $ 18,902 ​ $ 4,535,885 ​ The risk categories of loans based on year of origination, with classified loans defined as special mention loans, substandard loans and loans individually evaluated as of June 30, 2020, are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving ​ ​ ​ (dollars in thousands) 2020 2019 2018 2017 2016 Prior Loans Total Loans secured by Real Estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Multifamily ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 714,812 $ 694,794 ​ $ 590,767 $ 326,321 $ 156,876 ​ $ 72,762 $ — $ 2,556,332 Classified ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Total $ 714,812 $ 694,794 ​ $ 590,767 $ 326,321 $ 156,876 ​ $ 72,762 $ — $ 2,556,332 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Single Family ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 75,833 $ 103,177 ​ $ 142,061 $ 127,670 $ 128,707 ​ $ 222,836 $ 26,527 $ 826,811 Classified ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,971 ​ ​ — ​ ​ 7,763 ​ ​ 2,992 ​ ​ 12,726 Total $ 75,833 $ 103,177 ​ $ 142,061 $ 129,641 $ 128,707 ​ $ 230,599 $ 29,519 $ 839,537 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial Real Estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 7,753 $ 108,580 ​ $ 141,335 $ 137,158 $ 135,078 ​ $ 230,167 $ — $ 760,071 Classified ​ ​ — ​ ​ 44 ​ ​ — ​ ​ 2,397 ​ ​ 2,542 ​ ​ 9,885 ​ ​ — ​ ​ 14,868 Total $ 7,753 $ 108,624 ​ $ 141,335 $ 139,555 $ 137,620 ​ $ 240,052 $ — $ 774,939 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Land and Constructions ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ — $ 14,647 ​ $ 25,798 $ 22,311 $ 783 ​ $ 1,055 $ — $ 64,594 Classified ​ ​ — ​ ​ — ​ ​ 500 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 500 Total $ — $ 14,647 ​ $ 26,298 $ 22,311 $ 783 ​ $ 1,055 $ — $ 65,094 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 304,033 $ 185,354 ​ $ 83,577 $ 21,366 $ 18,864 ​ $ 21,684 $ 224,954 $ 859,832 Classified ​ ​ 826 ​ ​ 4,090 ​ ​ 2,570 ​ ​ 704 ​ ​ 2,300 ​ ​ 283 ​ ​ 4,859 ​ ​ 15,632 Total $ 304,859 $ 189,444 ​ $ 86,147 $ 22,070 $ 21,164 ​ $ 21,967 $ 229,813 $ 875,464 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 1,704 $ — ​ $ 1,430 $ 5 $ 7,061 ​ $ 134 $ 8,289 $ 18,623 Classified ​ ​ — ​ ​ — ​ ​ — ​ ​ 17 ​ ​ — ​ ​ — ​ ​ — ​ ​ 17 Total $ 1,704 $ — ​ $ 1,430 $ 22 $ 7,061 ​ $ 134 $ 8,289 $ 18,640 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 1,104,135 $ 1,106,552 ​ $ 984,968 $ 634,831 $ 447,369 ​ $ 548,638 $ 259,770 $ 5,086,263 Classified ​ ​ 826 ​ ​ 4,134 ​ ​ 3,070 ​ ​ 5,089 ​ ​ 4,842 ​ ​ 17,931 ​ ​ 7,851 ​ ​ 43,743 Total $ 1,104,961 $ 1,110,686 ​ $ 988,038 $ 639,920 $ 452,211 ​ $ 566,569 $ 267,621 $ 5,130,006 ​ Loans evaluated individually and any related allowance are as follows as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ With No Allowance Recorded ​ With an Allowance Recorded ​ ​ Unpaid ​ ​ ​ ​ Unpaid ​ ​ ​ ​ ​ ​ ​ ​ Principal ​ Recorded ​ Principal ​ Recorded ​ Related (dollars in thousands) Balance Investment Balance Investment Allowance June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 4,849 ​ $ 4,803 ​ $ 801 ​ $ 753 ​ $ 32 Commercial properties ​ 5,686 ​ 5,398 ​ 1,148 ​ 1,148 ​ 101 Land ​ 500 ​ 500 ​ — ​ — ​ — Commercial and industrial loans ​ 3,405 ​ 3,046 ​ 3,207 ​ 3,021 ​ 778 Consumer loans ​ ​ 17 ​ ​ 17 ​ ​ — ​ ​ — ​ ​ — Total ​ $ 14,457 ​ $ 13,764 ​ $ 5,156 ​ $ 4,922 ​ $ 911 December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 2,970 ​ $ 2,897 ​ $ — ​ $ — ​ $ — Commercial properties ​ 5,683 ​ 5,456 ​ 1,188 ​ 1,188 ​ 107 Land ​ — ​ — ​ — ​ — ​ — Commercial and industrial loans ​ 6,485 ​ 5,708 ​ 3,764 ​ 3,653 ​ 763 Total ​ $ 15,138 ​ $ 14,061 ​ $ 4,952 ​ $ 4,841 ​ $ 870 ​ The weighted average annualized average balance of the recorded investment for these loans, beginning from when the loan became classified as a loan individually evaluated, and any interest income recorded on these loans after they became classified as a loan individually evaluated is as follows for the: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended ​ Year Ended ​ ​ ​ June 30, 2020 ​ December 31, 2019 ​ ​ ​ Average ​ ​ ​ ​ Average ​ ​ ​ ​ ​ Recorded ​ Interest ​ Recorded ​ Interest ​ (dollars in thousands) ​ Investment ​ Income ​ Investment ​ Income ​ Real estate loans: ​ ​ ​ ​ ​ ​ Residential properties ​ $ 6,316 ​ $ 26 ​ $ 1,765 ​ $ 13 ​ Commercial properties ​ 10,925 ​ 118 ​ 8,889 ​ 341 ​ Land ​ 165 ​ ​ ​ 523 ​ — ​ Commercial and industrial loans ​ 12,450 ​ 891 ​ 10,608 ​ 11 ​ Consumer loans ​ 25 ​ — ​ — ​ — ​ Total ​ $ 29,881 ​ $ 1,035 ​ $ 21,785 ​ $ 365 ​ ​ There was no interest income recognized on a cash basis in either 2020 or 2019 on these loans. The following table presents the amortized cost basis of collateral dependent loans, which are individually evaluated to determine expected credit losses and the related ACL allocated to these loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Equipment/ ​ ​ ​ ​ ​ ACL (dollars in thousands) ​ Real Estate ​ Cash ​ Receivables ​ Total ​ ​ Allocation June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans secured by Real Estate: ​ ​ ​ ​ ​ ​ ​ ​ Residential properties ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Single family ​ $ 3,649 ​ $ — ​ $ — ​ $ 3,649 ​ $ — Commercial real estate loans ​ 421 ​ — ​ — ​ 421 ​ — Land ​ 500 ​ — ​ — ​ 500 ​ — Commercial loans ​ 1,039 ​ 250 ​ 1,180 ​ 2,469 ​ 116 Consumer loans ​ — ​ 18 ​ — ​ 18 ​ — Total ​ $ 5,609 ​ $ 268 ​ $ 1,180 ​ $ 7,057 ​ $ 116 ​

Loan Sales and Mortgage Servici

Loan Sales and Mortgage Servicing Rights	6 Months Ended
	Jun. 30, 2020
Loan Sales And Mortgage Servicing Rights Disclosure [Abstract]
Loan Sales and Mortgage Servicing Rights	NOTE 6: LOAN SALES AND MORTGAGE SERVICING RIGHTS In 2019, FFB recognized $4.2 million of gains on the sale of $549 million of multifamily loans. For sales of multifamily loans, FFB retained servicing rights for the majority of these loans and recognized mortgage servicing rights as part of the transactions. As of June 30, 2020 and December 31, 2019, mortgage servicing rights were $5.8 million and $7 million, respectively and the amount of loans serviced for others totaled $1.4 billion at June 30, 2020 and $1.7 billion at December 31, 2019. The $5.8 million in mortgage servicing rights as of June 30, 2020 is net of a $0.5 million valuation allowance. Servicing fees for the six months ended June 30, 2020, and in 2019 were $0.3 million and $0.8 million, respectively.

Deposits

Deposits	6 Months Ended
	Jun. 30, 2020
Deposits [Abstract]
Deposits	NOTE 7: DEPOSITS The following table summarizes the outstanding balance of deposits and average rates paid thereon as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 ​ ​ ​ ​ ​ ​ ​ Weighted ​ ​ ​ ​ Weighted ​ ​ (dollars in thousands) ​ Amount ​ Average Rate ​ Amount ​ Average Rate ​ ​ Demand deposits: ​ ​ ​ Noninterest-bearing ​ $ 1,770,382 — ​ $ 1,192,481 — ​ ​ Interest-bearing ​ 411,053 0.308 % 386,276 0.635 % ​ Money market and savings ​ 1,643,871 0.799 % 1,334,736 1.355 % ​ Certificates of deposits ​ 1,822,535 1.277 % 1,977,651 1.971 % ​ Total ​ $ 5,647,841 0.667 % $ 4,891,144 1.217 % ​ ​ At June 30, 2020, of the $553 million of certificates of deposits of $250,000 or more, $546 million mature within one year and $7 million mature after one year. Of the $1.3 billion of certificates of deposit of less than $250,000, $1.3 billion mature within one year and $16 million mature after one year. At December 31, 2019, of the $472 million of certificates of deposits of $250,000 or more, $471 million mature within one year and $0.8 million mature after one year. Of the $1.5 billion of certificates of deposit of less than $250,000, $1.5 billion mature within one year and $13 million mature after one year.

Borrowings

Borrowings	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Borrowings	NOTE 8: BORROWINGS At June 30, 2020, our borrowings consisted of $750 million in FHLB term advances at the Bank, $10 million in FHLB zero interest advances, and $4.6 million of borrowings under a holding company line of credit. At December 31, 2019, our borrowings consisted of $233 million of overnight FHLB advances at the Bank, a $500 million FHLB term advance at the Bank, and $10 million of borrowings under a holding company line of credit. The $500 million and $250 million FHLB term advances outstanding at June 30, 2020 mature in September 2020 and April 2021, and bear interest rates of 1.77% and 0.47%, respectively. The two $5 million FHLB advances are collateralized primarily by loans secured by multifamily and commercial real estate properties with a carrying value of $3.8 billion as of June 30, 2020. As a matter of practice, the Bank provides substantially all of its qualifying loans as collateral to the FHLB or the Federal Reserve Bank. The Bank’s total borrowing capacity from the FHLB at June 30, 2020 was $1.7 billion. In addition to the $760 million borrowing at June 30, 2020, the Bank had in place $282 million of letters of credit from the FHLB which are used to meet collateral requirements for borrowings from the State of California and local agencies. During 2017, FFI entered into a loan agreement with an unaffiliated lender that provides for a revolving line of credit for up to $40 million. The loan agreement matures in five years, with an option to extend the maturity date subject to certain conditions, and bears interest at 90 day LIBOR plus 350 The Bank also has $195 million available borrowing capacity through unsecured fed funds lines, ranging in size from $20 million to $100 million, with five other financial institutions, and a $217 million secured line with the Federal Reserve Bank. None of these lines had outstanding borrowings as June 30, 2020. Combined, the Bank’s unused lines of credit as of June 30, 2020 and December 31, 2019 were $2 billion and $1.4 billion, respectively. The average balance of overnight borrowings during the first six months of 2020 was $88 million, as compared to $413 million during all of 2019.

Leases

Leases	6 Months Ended
	Jun. 30, 2020
Leases [Abstract]
Leases	NOTE 9: LEASES The Company leases certain facilities for its corporate offices and branch operations under non-cancelable operating leases that expire through 2026. All leases were classified as operating leases and therefore, were previously not recognized on the Company’s consolidated balance sheet. With the adoption of Topic 842, operating lease agreements are required to be recognized on the consolidated balance sheet as a right-of-use (“ROU”) asset and a corresponding lease liability. Certain leases include options to renew, with renewal terms that can extend the lease term. The depreciable life of leased assets is limited by the expected lease term. Supplemental lease information at or for the six months ended June 30, 2020 is as follows: ​ ​ ​ ​ ​ (dollars in thousands) ​ ​ Balance Sheet: ​ ​ Operating lease asset classified as other assets ​ $ 16,943 ​ Operating lease liability classified as other liabilities ​ 18,265 ​ ​ ​ ​ ​ ​ Income Statement: ​ ​ Operating lease cost classified as occupancy and equipment expense ​ $ 2,959 ​ ​ ​ ​ ​ ​ Weighted average lease term, in years ​ 3.94 ​ Weighted average discount rate ​ 5.29 % Operating cash flows ​ $ 2,905 ​ ​ The calculated amount of the ROU assets and lease liabilities in the table above are impacted by the length of the lease term and the discount rate used to present value the minimum lease payments. The Company’s lease agreements often include one or more options to renew at the Company’s discretion. Topic 842 requires the use of the rate implicit in the lease whenever this rate is readily determinable. As this rate is rarely determinable, the Company utilizes its incremental borrowing rate at lease inception, on a collateralized basis, over a similar term. For operating leases existing prior to January 1, 2019, the rate for the remaining lease term as of January 1, 2019 was used. The table below summarizes the maturity of remaining lease liabilities at June 30, 2020: ​ ​ ​ ​ (dollars in thousands) ​ ​ 2020 ​ $ 3,236 2021 ​ 6,292 2022 ​ 5,344 2023 ​ 2,526 2024 and after ​ 4,345 Total future minimum lease payments ​ $ 21,743 Discount on cash flows ​ (3,478) Total lease liability ​ $ 18,265 ​

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 10: EARNINGS PER SHARE Basic earnings per share excludes dilution and is computed by dividing net income or loss available to common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflects the potential dilution that could occur if contracts to issue common stock were exercised or converted into common stock that would then share in earnings. The following table sets forth the Company’s unaudited earnings per share calculations for the quarters and six months ended June 30: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quarter Ended ​ Quarter Ended ​ ​ ​ June 30, 2020 ​ June 30, 2019 ​ (dollars in thousands, except per share amounts) ​ Basic ​ Diluted ​ Basic ​ Diluted ​ Net income $ 17,854 $ 17,854 ​ $ 12,410 $ 12,410 ​ Basic common shares outstanding ​ 44,620,716 ​ 44,620,716 ​ 44,625,673 ​ 44,625,673 ​ Effect of contingent shares issuable ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 1,592 ​ Effect of options and restricted stock ​ ​ ​ ​ ​ 191,653 ​ ​ ​ ​ ​ 267,455 ​ Diluted common shares outstanding ​ ​ 44,812,369 ​ ​ 44,894,720 ​ Earnings per share ​ $ 0.40 ​ $ 0.40 ​ $ 0.28 ​ $ 0.28 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended ​ Six Months Ended ​ ​ June 30, 2020 ​ June 30, 2019 (dollars in thousands, except share and per share amounts) ​ Basic ​ Diluted ​ Basic ​ Diluted Net income $ 31,065 $ 31,065 ​ $ 23,669 $ 23,669 Basic common shares outstanding ​ 44,645,189 ​ 44,645,189 ​ 44,583,503 ​ 44,583,503 Effect of contingent shares issuable ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ 1,592 Effect of options and restricted stock ​ ​ ​ ​ ​ 237,331 ​ ​ ​ ​ ​ 261,684 Diluted common shares outstanding ​ ​ 44,882,520 ​ ​ 44,846,779 Earnings per share ​ $ 0.70 ​ $ 0.69 ​ $ 0.53 ​ $ 0.53 ​ Based on a weighted average basis, restricted stock units to purchase 59,375 shares of common stock were excluded for the six months ended June 30, 2020, because their effect would have been anti-dilutive.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Segment Reporting	NOTE 11: SEGMENT REPORTING For the three and six months ended June 30, 2020 and 2019, the Company had two reportable business segments: Banking (FFB and FFIS) and Wealth Management (FFA). The results of FFI and any elimination entries are included in the column labeled Other. The following tables show key operating results for each of our business segments used to arrive at our consolidated totals for the following periods: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Wealth ​ ​ ​ ​ (dollars in thousands) ​ Banking ​ Management ​ Other Total Quarter ended June 30, 2020: ​ ​ ​ ​ Interest income ​ $ 61,932 ​ $ — ​ $ — ​ $ 61,932 Interest expense ​ 13,435 ​ — ​ 50 ​ 13,485 Net interest income ​ 48,497 ​ — ​ (50) ​ 48,447 Provision for credit losses ​ 1,367 ​ — ​ — ​ 1,367 Noninterest income ​ 3,635 ​ 5,631 ​ (297) ​ 8,969 Noninterest expense ​ 25,042 ​ 5,404 ​ 491 ​ 30,937 Income (loss) before taxes on income ​ $ 25,723 ​ $ 227 ​ $ (838) ​ $ 25,112 Quarter ended June 30, 2019: ​ ​ ​ ​ Interest income ​ $ 63,308 ​ $ — ​ $ — ​ $ 63,308 Interest expense ​ 21,322 ​ — ​ 99 ​ 21,421 Net interest income ​ 41,986 ​ — ​ (99) ​ 41,887 Provision for credit losses ​ 1,231 ​ — ​ — ​ 1,231 Noninterest income ​ 3,471 ​ 5,982 ​ (322) ​ 9,131 Noninterest expense ​ 25,801 ​ 5,567 ​ 914 ​ 32,282 Income (loss) before taxes on income ​ $ 18,425 ​ $ 415 ​ $ (1,335) ​ $ 17,505 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Wealth ​ ​ ​ ​ (dollars in thousands) ​ Banking ​ Management ​ Other Total Six Months Ended June 30, 2020: ​ ​ ​ ​ Interest income ​ $ 124,270 ​ $ — ​ $ — ​ $ 124,270 Interest expense ​ 30,875 ​ — ​ 80 ​ 30,955 Net interest income ​ 93,395 ​ — ​ (80) ​ 93,315 Provision for credit losses ​ 5,431 ​ — ​ — ​ 5,431 Noninterest income ​ 8,294 ​ 12,119 ​ (769) ​ 19,644 Noninterest expense ​ 51,286 ​ 11,569 ​ 954 ​ 63,809 Income (loss) before taxes on income ​ $ 44,972 ​ $ 550 ​ $ (1,803) ​ $ 43,719 Six Months Ended June 30, 2019: ​ ​ ​ ​ Interest income ​ $ 123,852 ​ $ — ​ $ — ​ $ 123,852 Interest expense ​ 40,804 ​ — ​ 114 ​ 40,918 Net interest income ​ 83,048 ​ — ​ (114) ​ 82,934 Provision for credit losses ​ 1,771 ​ — ​ — ​ 1,771 Noninterest income ​ 6,465 ​ 11,713 ​ (582) ​ 17,596 Noninterest expense ​ 52,388 ​ 11,085 ​ 1,754 ​ 65,227 Income (loss) before taxes on income ​ $ 35,354 ​ $ 628 ​ $ (2,450) ​ $ 33,532 ​

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2020
Subsequent Events [Abstract]
Subsequent Events	NOTE 12: SUBSEQUENT EVENTS Cash Dividend On July 21, 2020, the Board of Directors of the Company declared a quarterly cash dividend of $0.07 per common share to be paid on August 17, 2020 to stockholders of record as of the close of business on August 3, 2020.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2020
Accounting Policies [Abstract]
Basis of Presentation	The consolidated financial statements include First Foundation Inc. (“FFI”) and its wholly owned subsidiaries: First Foundation Advisors (“FFA”) and First Foundation Bank (“FFB” or the “Bank”) and the wholly owned subsidiaries of FFB, First Foundation Insurance Services (“FFIS”) and Blue Moon Management, LLC (collectively referred to as the “Company”). All intercompany balances and transactions have been eliminated in consolidation. The results of operations reflect any interim adjustments, all of which are of a normal recurring nature and which, in the opinion of management, are necessary for a fair presentation of the results for the interim period presented. The results for the 2020 interim periods are not necessarily indicative of the results expected for the full year. The consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America and prevailing practices within the banking industry. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and revenues and expenses for the period. Actual results could differ significantly from those estimates. The accompanying unaudited consolidated financial statements include all information and footnotes required for interim financial statement presentation. These financial statements assume that readers have read the most recent Annual Report on Form 10-K which contains the latest available audited consolidated financial statements and notes thereto as of and for the year ended December 31, 2019. Certain reclassifications have been made to the prior year consolidated financial statements to conform to the 2020 presentation.
Recently Adopted Accounting Guidance and Recent Accounting Pronouncements	Recently Adopted Accounting Guidance Measurement of Credit Losses on Financial Instruments: In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The Company adopted the amendments within ASU 2016-13 on January 1, 2020 using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. Results for the periods beginning after that date are presented under Topic 326, while prior period amounts continue to be reported in accordance with previously applicable generally accepted accounting principles (“GAAP”). There was not any cumulative effect adjustment upon adoption. The instruments that were accounted for as purchased credit impaired (“PCI”) are transitioned under the new purchased credit deteriorated (“PCD”) model using the prospective transition approach. The Company applied the prospective transition approach for debt securities for which other than temporary impairment had been recognized prior to January 1, 2020. As a result, the amortized cost basis remains the same before and after the effective date. Allowance for credit losses on investment securities: On January 1, 2020, the Company adopted the amendments within ASU 2016-13, which replaces the legacy US GAAP Other Than Temporary Impairment (“OTTI”) model with a credit loss model. The credit loss model under Accounting Standards Codification (“ASC”) 326-30, applicable to debt securities available for sale (“Securities AFS”), requires recognition of credit losses through an allowance account, but retains the concept from the OTTI model that credit losses are recognized once securities become impaired. For Securities AFS, a decline in fair value due to credit loss results in recognition of an allowance for credit losses. Impairment may result from credit deterioration of the issuer or collateral underlying the security. The assessment of determining if a decline in fair value resulted from a credit loss is performed at the individual security level. Among other factors, the Company considers: 1) the extent to which the fair value is less than the amortized cost basis; 2) the financial condition and near term prospects of the issuer, including consideration of relevant financial metrics or ratios of the issuer; 3) any adverse conditions related to an industry or geographic area of an issuer; 4) any changes to the rating of the security by a rating agency; and 5) any past due principal or interest payments from the issuer. If an assessment of the above factors indicates that a credit loss exists, the Company records an allowance for credit losses for the excess of the amortized cost basis over the present value of cash flows expected to be collected, limited to the amount that the security’s fair value is less than its amortized cost basis. Subsequent changes in the allowance for credit losses are recorded as a provision for (or reversal of) credit loss expense. Interest accruals and amortization and accretion of premiums and discounts are suspended when the credit loss is recognized in earnings. Any interest received after the security has been placed on nonaccrual status is recognized on a cash basis. Accrued interest receivable on Securities AFS is excluded from the estimate of expected credit losses. The provision for credit losses on the consolidated income statement includes the provisions for credit losses for loans and securities AFS. For the six months ending June 30, 2020, the provision for credit losses for loans was $3 million and the provision for credit losses for Securities AFS was $2.4 million, resulting in a total provision for credit losses of $5.4 million. Recent Accounting Pronouncements In March 2020, the FASB issued ASU 2020-04, “ Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting” In November 2019, the FASB issued ASU 2019-12, “ Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes” Topic 740 In July 2019, the FASB issued ASU 2019-07, Codification Updates to SEC Sections Disclosure Update and Simplification Investment Company Reporting Modernization

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Recorded Amounts of Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables show the recorded amounts of assets and liabilities measured at fair value on a recurring basis as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurement Level (dollars in thousands) ​ Total ​ Level 1 ​ Level 2 ​ Level 3 June 30, 2020: ​ ​ ​ ​ Investment securities available for sale: ​ ​ ​ ​ Agency mortgage-backed securities ​ $ 773,131 ​ $ — ​ $ 773,131 ​ $ — Beneficial interest – FHLMC securitizations ​ 28,956 ​ — ​ — ​ 28,956 Corporate bonds ​ 57,827 ​ — ​ 57,827 ​ — Other ​ 1,493 ​ 407 ​ 1,086 ​ — Investment in equity securities ​ 299 ​ 299 ​ — ​ — Total assets at fair value on a recurring basis ​ $ 861,706 ​ $ 706 ​ $ 832,044 ​ $ 28,956 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivatives: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest rate swaps ​ $ 11,688 ​ $ — ​ $ 11,688 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investment securities available for sale: ​ ​ ​ ​ Agency mortgage-backed securities ​ $ 914,977 ​ $ — ​ $ 914,977 ​ $ — Beneficial interest – FHLMC securitizations ​ 42,706 ​ — ​ — ​ 42,706 Corporate bonds ​ 55,834 ​ — ​ 55,834 ​ — Other ​ 1,449 ​ 403 ​ 1,046 ​ — Investment in equity securities ​ 434 ​ 434 ​ — ​ — Total assets at fair value on a recurring basis ​ $ 1,015,400 ​ $ 837 ​ $ 971,857 ​ $ 42,706
Carrying Amounts and Estimated Fair Value of Financial Instruments	The carrying amounts and estimated fair values of financial instruments are as follows as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying ​ Fair Value Measurement Level (dollars in thousands) ​ Value ​ 1 ​ 2 ​ 3 ​ Total June 30, 2020: ​ ​ ​ ​ ​ Assets: ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 414,179 ​ $ 414,179 ​ $ — ​ $ — ​ $ 414,179 Securities AFS, net ​ 861,407 ​ 407 ​ 832,044 ​ 28,956 ​ 861,407 Loans held for sale ​ 527,970 ​ — ​ 533,565 ​ — ​ 533,565 Loans, net ​ 5,108,683 ​ — ​ — ​ 5,163,076 ​ 5,163,076 Investment in FHLB stock ​ 23,598 ​ — ​ 23,598 ​ — ​ 23,598 Investment in equity securities ​ 299 ​ 299 ​ — ​ — ​ 299 Liabilities: ​ ​ ​ ​ ​ Deposits ​ $ 5,647,841 ​ $ 3,825,306 ​ $ 1,832,007 ​ $ — ​ $ 5,657,313 Borrowings ​ 764,600 ​ — ​ 760,000 ​ 4,600 ​ 764,600 Interest rate swaps ​ ​ 11,688 ​ ​ — ​ ​ 11,688 ​ ​ — ​ ​ 11,688 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Assets: ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 65,387 ​ $ 65,387 ​ $ — ​ $ — ​ $ 65,387 Securities AFS ​ 1,014,966 ​ 403 ​ 971,857 ​ 42,706 ​ 1,014,966 Loans held for sale ​ 503,036 ​ — ​ 506,750 ​ — ​ 506,750 Loans, net ​ 4,526,833 ​ — ​ — ​ 4,573,516 ​ 4,573,516 Investment in FHLB stock ​ 21,519 ​ — ​ 21,519 ​ — ​ 21,519 Investment in equity securities ​ 434 ​ 434 ​ — ​ — ​ 434 Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Deposits ​ $ 4,891,144 ​ $ 2,913,493 ​ $ 1,977,652 ​ $ — ​ $ 4,891,145 Borrowings ​ 743,000 ​ — ​ 733,000 ​ 10,000 ​ 743,000

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2020
Investments Debt And Equity Securities [Abstract]
Summary of AFS Securities Portfolio	The following table provides a summary of the Company’s securities AFS portfolio as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized ​ Gross Unrealized ​ Allowance for ​ Estimated (dollars in thousands) ​ Cost ​ Gains ​ Losses ​ Credit Losses ​ Fair Value June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Agency mortgage-backed securities ​ $ 761,247 ​ $ 11,884 ​ $ — ​ $ — ​ $ 773,131 Beneficial interests in FHLMC securitization ​ 36,637 ​ 241 ​ (5,551) ​ (2,371) ​ 28,956 Corporate bonds ​ 57,000 ​ 935 ​ (108) ​ — ​ 57,827 Other ​ 1,399 ​ 94 ​ — ​ — ​ 1,493 Total ​ $ 856,283 ​ $ 13,154 ​ $ (5,659) ​ $ (2,371) ​ $ 861,407 December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Agency mortgage-backed securities ​ $ 905,949 ​ $ 9,174 ​ $ (146) ​ $ — ​ $ 914,977 Beneficial interests in FHLMC securitization ​ 47,586 ​ 1,801 ​ (6,681) ​ — ​ 42,706 Corporate bonds ​ 54,000 ​ 1,834 ​ — ​ — ​ 55,834 Other ​ 1,386 ​ 63 ​ — ​ — ​ 1,449 Total ​ $ 1,008,921 ​ $ 12,872 ​ $ (6,827) ​ $ — ​ $ 1,014,966
Schedule of Securities in a Continuous Unrealized Loss Position Aggregated by Investment Category and Length of Time	The tables below indicate, as of June 30, 2020 and December 31, 2019, the gross unrealized losses and fair values of our investments, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities with Unrealized Loss at June 30, 2020 ​ ​ Less than 12 months ​ 12 months or more ​ Total ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized (dollars in thousands) Value Loss Value Loss Value Loss Beneficial interests in FHLMC securitization ​ $ 13,954 ​ $ (5,119) ​ $ 346 ​ $ (432) ​ $ 14,300 ​ $ (5,551) Corporate bonds ​ ​ 14,892 ​ ​ (108) ​ ​ — ​ ​ — ​ ​ 14,892 ​ ​ (108) Total temporarily impaired securities ​ $ 28,846 ​ ​ (5,227) ​ $ 346 ​ $ (432) ​ $ 29,192 ​ $ (5,659) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities with Unrealized Loss at December 31, 2019 ​ ​ Less than 12 months ​ 12 months or more ​ Total ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized (dollars in thousands) Value Loss Value Loss Value Loss Agency mortgage-backed securities $ 5,488 $ (2) $ 13,880 $ (144) $ 19,368 $ (146) Beneficial interests in FHLMC securitization ​ 20,609 ​ (2,856) ​ 3,220 ​ (3,825) ​ 23,829 ​ (6,681) Total temporarily impaired securities ​ $ 26,097 ​ $ (2,858) ​ $ 17,100 ​ $ (3,969) ​ $ 43,197 ​ $ (6,827)
Summary of Allowance For Credit Losses - Securities AFS	​ ​ ​ ​ ​ Allowance for credit losses - Investments ​ ​ (dollars in thousands) ​ ​ ​ Balance: December 31, 2019 $ — Provision for credit losses ​ 2,371 Balance: June 30, 2020 $ 2,371
Scheduled Maturities of Securities AFS Other than Mortgage Backed Securities and the Related Weighted Average Yield	The scheduled maturities of securities AFS and the related weighted average yields were as follows for the periods indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Less than 1 Through 5 Through After ​ ​ (dollars in thousands) ​ 1 Year ​ 5 years ​ 10 Years ​ 10 Years ​ Total June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized Cost: ​ ​ ​ ​ ​ ​ Corporate bonds ​ $ — ​ $ — ​ $ 57,000 ​ $ — ​ $ 57,000 ​ Other ​ 400 ​ — ​ 999 ​ — ​ 1,399 ​ Total ​ $ 400 ​ $ — ​ $ 57,999 ​ $ — ​ $ 58,399 ​ Weighted average yield ​ 2.16 % — % 5.35 % — % 5.33 % Estimated Fair Value: ​ ​ ​ ​ ​ ​ Corporate bonds ​ $ — ​ $ — ​ $ 57,827 ​ $ — ​ $ 57,827 ​ Other ​ 407 ​ — ​ 1,086 ​ — ​ 1,493 ​ Total ​ $ 407 ​ $ — ​ $ 58,913 ​ $ — ​ $ 59,320 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Less than 1 Through 5 Through After ​ ​ (dollars in thousands) ​ 1 Year ​ 5 years ​ 10 Years ​ 10 Years ​ Total December 31, 2019 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized Cost: ​ ​ ​ ​ ​ ​ Corporate bonds ​ $ — ​ $ — ​ $ 54,000 ​ $ — ​ $ 54,000 ​ Other ​ — ​ 400 ​ 986 ​ — ​ 1,386 ​ Total ​ $ — ​ $ 400 ​ $ 54,986 ​ $ — ​ $ 55,386 ​ Weighted average yield ​ — % 2.25 % 5.29 % — % 5.27 % Estimated Fair Value: ​ ​ ​ ​ ​ ​ Corporate bonds ​ $ — ​ $ — ​ $ 55,834 ​ $ — ​ $ 55,834 ​ Other ​ — ​ 403 ​ 1,046 ​ — ​ 1,449 ​ Total ​ $ — ​ $ 403 ​ $ 56,880 ​ $ — ​ $ 57,283 ​

Loans (Tables)

Loans (Tables)	6 Months Ended
	Jun. 30, 2020
Receivables [Abstract]
Summary of Loans	The following is a summary of our loans as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, (dollars in thousands) 2020 2019 Outstanding principal balance: ​ ​ ​ ​ Loans secured by real estate: ​ ​ Residential properties: ​ ​ Multifamily ​ $ 2,556,332 ​ $ 2,143,919 Single family ​ 839,537 ​ 871,181 Total real estate loans secured by residential properties ​ 3,395,869 ​ 3,015,100 Commercial properties ​ 774,939 ​ 834,042 Land ​ 65,094 ​ 70,257 Total real estate loans ​ 4,235,902 ​ 3,919,399 Commercial and industrial loans ​ 875,464 ​ 600,213 Consumer loans ​ 18,640 ​ 16,273 Total loans ​ 5,130,006 ​ 4,535,885 Premiums, discounts and deferred fees and expenses ​ 6,806 ​ 11,748 Total ​ $ 5,136,812 ​ $ 4,547,633
Carrying Amount Of Purchased Credit Impaired Loans	​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, December 31, (dollars in thousands) 2020 2019 Outstanding principal balance: ​ ​ ​ ​ Loans secured by real estate: ​ ​ Residential properties ​ $ 291 ​ $ 366 Commercial properties ​ 5,529 ​ 6,146 Land ​ — ​ 1,058 Total real estate loans ​ 5,820 ​ 7,570 Commercial and industrial loans ​ 317 ​ 603 Total loans ​ 6,137 ​ 8,173 Unaccreted discount on purchased credit deteriorated loans ​ — ​ (3,657) Total ​ $ 6,137 ​ $ 4,516
Summary of Delinquent and Nonaccrual Loans	The following table summarizes our delinquent and nonaccrual loans as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Past Due and Still Accruing ​ ​ ​ ​ Total Past ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 90 Days ​ ​ ​ ​ Due and ​ ​ ​ ​ ​ ​ (dollars in thousands) 30–59 Days 60-89 Days or More Nonaccrual Nonaccrual Current Total June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ ​ ​ Residential properties ​ $ 5,572 ​ $ — ​ $ — ​ $ 7,027 ​ $ 12,599 ​ $ 3,383,270 ​ $ 3,395,869 Commercial properties ​ 1,255 ​ 4,159 ​ — ​ 2,320 ​ 7,734 ​ 767,205 ​ 774,939 Land ​ — ​ 455 ​ — ​ 500 ​ 955 ​ 64,139 ​ 65,094 Commercial and industrial loans ​ 2,051 ​ 685 ​ — ​ 5,648 ​ 8,384 ​ 867,080 ​ 875,464 Consumer loans ​ 350 ​ — ​ — ​ 17 ​ 367 ​ 18,273 ​ 18,640 Total ​ $ 9,228 ​ $ 5,299 ​ $ — ​ $ 15,512 ​ $ 30,039 ​ $ 5,099,967 ​ $ 5,130,006 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Percentage of total loans ​ 0.18 % 0.10 % — % 0.30 % 0.59 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ ​ ​ Residential properties ​ $ 89 ​ $ 13 ​ $ — ​ $ 1,743 ​ $ 1,845 ​ $ 3,013,255 ​ $ 3,015,100 Commercial properties ​ 7,586 ​ — ​ 403 ​ 2,410 ​ 10,399 ​ 823,643 ​ 834,042 Land ​ — ​ — ​ — ​ — ​ — ​ 70,257 ​ 70,257 Commercial and industrial loans ​ 695 ​ 2,007 ​ — ​ 8,714 ​ 11,416 ​ 588,797 ​ 600,213 Consumer loans ​ 22 ​ 3 ​ — ​ — ​ 25 ​ 16,248 ​ 16,273 Total ​ $ 8,392 ​ $ 2,023 ​ $ 403 ​ $ 12,867 ​ $ 23,685 ​ $ 4,512,200 ​ $ 4,535,885 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Percentage of total loans ​ 0.19 % 0.04 % 0.01 % 0.28 % 0.52 % ​
Composition of TDRs by Accrual and Nonaccrual Status	The following table presents the loans classified as troubled debt restructurings (“TDR”) by accrual and nonaccrual status as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 (dollars in thousands) ​ Accrual ​ Nonaccrual ​ Total ​ Accrual ​ Nonaccrual ​ Total Residential loans $ 1,200 $ — $ 1,200 $ 1,200 $ — $ 1,200 Commercial real estate loans ​ 1,148 ​ 1,374 ​ 2,522 ​ 1,188 ​ 2,166 ​ 3,354 Commercial and industrial loans ​ 606 ​ 3,875 ​ 4,481 ​ 557 ​ 2,972 ​ 3,529 Total ​ $ 2,954 ​ $ 5,249 ​ $ 8,203 ​ $ 2,945 ​ $ 5,138 ​ $ 8,083 ​ The following table provides information on loans that were modified as TDRs for the following periods: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Outstanding Recorded Investment ​ ​ ​ (dollars in thousands) ​ Number of loans ​ Pre-Modification ​ Post-Modification ​ Financial Impact Six Months Ended June 30, 2020: ​ ​ ​ Commercial and industrial loans 1 ​ $ 521 ​ 521 ​ $ — Total 1 ​ $ 521 ​ $ 521 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Outstanding Recorded Investment ​ ​ ​ (dollars in thousands) ​ Number of loans ​ Pre-Modification ​ Post-Modification ​ Financial Impact Year Ended December 31, 2019 ​ ​ ​ Residential loans ​ 1 ​ $ 1,200 ​ $ 1,200 ​ $ — Commercial real estate loans 1 ​ ​ 2,872 ​ ​ 2,872 ​ ​ — Commercial and industrial loans 7 ​ 1,754 ​ 1,754 ​ — Total 9 ​ $ 5,826 ​ $ 5,826 ​ $ — ​

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	6 Months Ended
	Jun. 30, 2020
Receivables [Abstract]
Bank's Allowance for Credit Losses	The following is a roll forward of the Bank’s allowance for credit losses related to loans for the following periods: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning ​ Adoption of Provision for ​ ​ ​ ​ Ending (dollars in thousands) ​ Balance ​ ASC 326 ​ Credit Losses ​ Charge-offs ​ Recoveries ​ Balance Quarter Ended June 30, 2020: ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ ​ ​ Residential properties ​ $ 6,026 ​ $ — ​ $ 730 ​ $ — ​ $ — ​ $ 6,756 Commercial properties ​ 1,178 ​ — ​ 8,133 ​ — ​ — ​ 9,311 Land ​ 1,252 ​ — ​ 2,116 ​ — ​ — ​ 3,368 Commercial and industrial loans ​ 10,125 ​ — ​ (1,225) ​ (525) ​ 113 ​ 8,488 Consumer loans ​ 204 ​ — ​ 2 ​ — ​ — ​ 206 Total ​ $ 18,785 ​ $ — ​ $ 9,756 ​ $ (525) ​ $ 113 ​ $ 28,129 Six Months Ended June 30, 2020: ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ ​ Residential properties ​ $ 8,423 ​ $ (363) ​ $ (1,304) ​ $ — ​ $ — ​ $ 6,756 Commercial properties ​ 4,166 ​ (3,760) ​ 8,905 ​ — ​ — ​ 9,311 Land ​ 573 ​ (92) ​ 2,887 ​ — ​ — ​ 3,368 Commercial and industrial loans ​ 7,448 ​ — ​ 1,531 ​ (1,055) ​ 564 ​ 8,488 Consumer loans ​ 190 ​ — ​ 16 ​ — ​ — ​ 206 Total ​ $ 20,800 ​ $ (4,215) ​ $ 12,035 ​ $ (1,055) ​ $ 564 ​ $ 28,129 Year Ended December 31, 2019: ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ ​ Residential properties ​ $ 9,216 ​ $ — ​ $ (793) ​ $ — ​ $ — ​ $ 8,423 Commercial properties ​ 4,547 ​ — ​ (381) ​ — ​ — ​ 4,166 Land ​ 391 ​ — ​ 182 ​ — ​ — ​ 573 Commercial and industrial loans ​ 4,628 ​ — ​ 3,653 ​ (2,687) ​ 1,854 ​ 7,448 Consumer loans ​ 218 ​ — ​ (24) ​ (5) ​ 1 ​ 190 Total ​ $ 19,000 ​ $ — ​ $ 2,637 ​ $ (2,692) ​ $ 1,855 ​ $ 20,800
Balance in Allowance for Credit Losses and Recorded Investment in Loans by Impairment	​ ​ The following table presents the balance in the allowance for credit losses and the recorded investment in loans by impairment method as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for Credit Losses ​ Unaccreted ​ ​ ​ ​ ​ ​ ​ ​ Purchased ​ ​ ​ ​ Credit ​ ​ Evaluated for Impairment ​ Credit ​ ​ ​ ​ Component (dollars in thousands) Individually Collectively Deteriorated Total Other Loans June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 34 ​ $ 6,722 ​ $ — ​ $ 6,756 ​ $ ​ Commercial properties ​ 385 ​ 8,926 ​ — ​ 9,311 ​ ​ Land ​ — ​ 3,368 ​ — ​ 3,368 ​ ​ Commercial and industrial loans ​ 784 ​ 7,704 ​ — ​ 8,488 ​ ​ Consumer loans ​ — ​ 206 ​ — ​ 206 ​ ​ Total ​ $ 1,203 ​ $ 26,926 ​ $ — ​ $ 28,129 ​ $ ​ Loans: ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 5,556 ​ $ 3,390,022 ​ $ 291 ​ $ 3,395,869 ​ $ ​ Commercial properties ​ 6,546 ​ 762,864 ​ 5,529 ​ 774,939 ​ ​ Land ​ 500 ​ 64,594 ​ — ​ 65,094 ​ ​ Commercial and industrial loans ​ 6,067 ​ 869,080 ​ 317 ​ 875,464 ​ ​ Consumer loans ​ 17 ​ 18,623 ​ — ​ 18,640 ​ ​ Total ​ $ 18,686 ​ $ 5,105,183 ​ $ 6,137 ​ $ 5,130,006 ​ $ ​ December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses: ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ — ​ $ 8,423 ​ $ — ​ $ 8,423 ​ $ 1,013 Commercial properties ​ 107 ​ 4,059 ​ — ​ 4,166 ​ 1,048 Land ​ — ​ 573 ​ — ​ 573 ​ 6 Commercial and industrial loans ​ 763 ​ 6,685 ​ — ​ 7,448 ​ 277 Consumer loans ​ — ​ 190 ​ — ​ 190 ​ 1 Total ​ $ 870 ​ $ 19,930 ​ $ — ​ $ 20,800 ​ $ 2,345 Loans: ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 2,897 ​ $ 3,012,203 ​ $ — ​ $ 3,015,100 ​ $ 189,339 Commercial properties ​ 6,689 ​ 824,026 ​ 3,327 ​ 834,042 ​ 201,370 Land ​ — ​ 69,476 ​ 781 ​ 70,257 ​ 28,660 Commercial and industrial loans ​ 9,316 ​ 590,489 ​ 408 ​ 600,213 ​ 24,143 Consumer loans ​ — ​ 16,273 ​ — ​ 16,273 ​ 253 Total ​ $ 18,902 ​ $ 4,512,467 ​ $ 4,516 ​ $ 4,535,885 ​ $ 443,765
Risk Category of Loans by Class of Loans	Based on the most recent analysis performed, the risk category of loans by class of loans is as follows as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans Individually ​ ​ ​ (dollars in thousands) Pass Special Mention Substandard Loans Evaluated Total June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 3,383,143 ​ $ — ​ $ 7,170 ​ $ 5,556 ​ $ 3,395,869 Commercial properties ​ 760,071 ​ 663 ​ 7,659 ​ 6,546 ​ 774,939 Land ​ 64,594 ​ — ​ — ​ 500 ​ 65,094 Commercial and industrial loans ​ 859,832 ​ 5,824 ​ 3,741 ​ 6,067 ​ 875,464 Consumer loans ​ 18,623 ​ — ​ — ​ 17 ​ 18,640 Total ​ $ 5,086,263 ​ $ 6,487 ​ $ 18,570 ​ $ 18,686 ​ $ 5,130,006 December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 3,012,203 ​ $ — ​ $ — ​ $ 2,897 ​ $ 3,015,100 Commercial properties ​ 821,425 ​ 679 ​ 5,249 ​ 6,689 ​ 834,042 Land ​ 69,476 ​ — ​ 781 ​ — ​ 70,257 Commercial and industrial loans ​ 579,153 ​ 8,202 ​ 3,542 ​ 9,316 ​ 600,213 Consumer loans ​ 16,273 ​ — ​ — ​ — ​ 16,273 Total ​ $ 4,498,530 ​ $ 8,881 ​ $ 9,572 ​ $ 18,902 ​ $ 4,535,885
Risk Category of Loans Based on Year of Origination	The risk categories of loans based on year of origination, with classified loans defined as special mention loans, substandard loans and loans individually evaluated as of June 30, 2020, are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving ​ ​ ​ (dollars in thousands) 2020 2019 2018 2017 2016 Prior Loans Total Loans secured by Real Estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Multifamily ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 714,812 $ 694,794 ​ $ 590,767 $ 326,321 $ 156,876 ​ $ 72,762 $ — $ 2,556,332 Classified ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Total $ 714,812 $ 694,794 ​ $ 590,767 $ 326,321 $ 156,876 ​ $ 72,762 $ — $ 2,556,332 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Single Family ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 75,833 $ 103,177 ​ $ 142,061 $ 127,670 $ 128,707 ​ $ 222,836 $ 26,527 $ 826,811 Classified ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,971 ​ ​ — ​ ​ 7,763 ​ ​ 2,992 ​ ​ 12,726 Total $ 75,833 $ 103,177 ​ $ 142,061 $ 129,641 $ 128,707 ​ $ 230,599 $ 29,519 $ 839,537 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial Real Estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 7,753 $ 108,580 ​ $ 141,335 $ 137,158 $ 135,078 ​ $ 230,167 $ — $ 760,071 Classified ​ ​ — ​ ​ 44 ​ ​ — ​ ​ 2,397 ​ ​ 2,542 ​ ​ 9,885 ​ ​ — ​ ​ 14,868 Total $ 7,753 $ 108,624 ​ $ 141,335 $ 139,555 $ 137,620 ​ $ 240,052 $ — $ 774,939 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Land and Constructions ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ — $ 14,647 ​ $ 25,798 $ 22,311 $ 783 ​ $ 1,055 $ — $ 64,594 Classified ​ ​ — ​ ​ — ​ ​ 500 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 500 Total $ — $ 14,647 ​ $ 26,298 $ 22,311 $ 783 ​ $ 1,055 $ — $ 65,094 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 304,033 $ 185,354 ​ $ 83,577 $ 21,366 $ 18,864 ​ $ 21,684 $ 224,954 $ 859,832 Classified ​ ​ 826 ​ ​ 4,090 ​ ​ 2,570 ​ ​ 704 ​ ​ 2,300 ​ ​ 283 ​ ​ 4,859 ​ ​ 15,632 Total $ 304,859 $ 189,444 ​ $ 86,147 $ 22,070 $ 21,164 ​ $ 21,967 $ 229,813 $ 875,464 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 1,704 $ — ​ $ 1,430 $ 5 $ 7,061 ​ $ 134 $ 8,289 $ 18,623 Classified ​ ​ — ​ ​ — ​ ​ — ​ ​ 17 ​ ​ — ​ ​ — ​ ​ — ​ ​ 17 Total $ 1,704 $ — ​ $ 1,430 $ 22 $ 7,061 ​ $ 134 $ 8,289 $ 18,640 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass $ 1,104,135 $ 1,106,552 ​ $ 984,968 $ 634,831 $ 447,369 ​ $ 548,638 $ 259,770 $ 5,086,263 Classified ​ ​ 826 ​ ​ 4,134 ​ ​ 3,070 ​ ​ 5,089 ​ ​ 4,842 ​ ​ 17,931 ​ ​ 7,851 ​ ​ 43,743 Total $ 1,104,961 $ 1,110,686 ​ $ 988,038 $ 639,920 $ 452,211 ​ $ 566,569 $ 267,621 $ 5,130,006
Individual Evaluation of Loans and Related Allowance	Loans evaluated individually and any related allowance are as follows as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ With No Allowance Recorded ​ With an Allowance Recorded ​ ​ Unpaid ​ ​ ​ ​ Unpaid ​ ​ ​ ​ ​ ​ ​ ​ Principal ​ Recorded ​ Principal ​ Recorded ​ Related (dollars in thousands) Balance Investment Balance Investment Allowance June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 4,849 ​ $ 4,803 ​ $ 801 ​ $ 753 ​ $ 32 Commercial properties ​ 5,686 ​ 5,398 ​ 1,148 ​ 1,148 ​ 101 Land ​ 500 ​ 500 ​ — ​ — ​ — Commercial and industrial loans ​ 3,405 ​ 3,046 ​ 3,207 ​ 3,021 ​ 778 Consumer loans ​ ​ 17 ​ ​ 17 ​ ​ — ​ ​ — ​ ​ — Total ​ $ 14,457 ​ $ 13,764 ​ $ 5,156 ​ $ 4,922 ​ $ 911 December 31, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate loans: ​ ​ ​ ​ ​ Residential properties ​ $ 2,970 ​ $ 2,897 ​ $ — ​ $ — ​ $ — Commercial properties ​ 5,683 ​ 5,456 ​ 1,188 ​ 1,188 ​ 107 Land ​ — ​ — ​ — ​ — ​ — Commercial and industrial loans ​ 6,485 ​ 5,708 ​ 3,764 ​ 3,653 ​ 763 Total ​ $ 15,138 ​ $ 14,061 ​ $ 4,952 ​ $ 4,841 ​ $ 870
Weighted Average Annualized Balance of Recorded Investment and Interest Income on Loans	The weighted average annualized average balance of the recorded investment for these loans, beginning from when the loan became classified as a loan individually evaluated, and any interest income recorded on these loans after they became classified as a loan individually evaluated is as follows for the: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended ​ Year Ended ​ ​ ​ June 30, 2020 ​ December 31, 2019 ​ ​ ​ Average ​ ​ ​ ​ Average ​ ​ ​ ​ ​ Recorded ​ Interest ​ Recorded ​ Interest ​ (dollars in thousands) ​ Investment ​ Income ​ Investment ​ Income ​ Real estate loans: ​ ​ ​ ​ ​ ​ Residential properties ​ $ 6,316 ​ $ 26 ​ $ 1,765 ​ $ 13 ​ Commercial properties ​ 10,925 ​ 118 ​ 8,889 ​ 341 ​ Land ​ 165 ​ ​ ​ 523 ​ — ​ Commercial and industrial loans ​ 12,450 ​ 891 ​ 10,608 ​ 11 ​ Consumer loans ​ 25 ​ — ​ — ​ — ​ Total ​ $ 29,881 ​ $ 1,035 ​ $ 21,785 ​ $ 365 ​
Amortized Cost Basis of Collateral Dependent Loans Individually Evaluated to Determine Credit Losses and Related ACL Allocated to Loans	The following table presents the amortized cost basis of collateral dependent loans, which are individually evaluated to determine expected credit losses and the related ACL allocated to these loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Equipment/ ​ ​ ​ ​ ​ ACL (dollars in thousands) ​ Real Estate ​ Cash ​ Receivables ​ Total ​ ​ Allocation June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans secured by Real Estate: ​ ​ ​ ​ ​ ​ ​ ​ Residential properties ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Single family ​ $ 3,649 ​ $ — ​ $ — ​ $ 3,649 ​ $ — Commercial real estate loans ​ 421 ​ — ​ — ​ 421 ​ — Land ​ 500 ​ — ​ — ​ 500 ​ — Commercial loans ​ 1,039 ​ 250 ​ 1,180 ​ 2,469 ​ 116 Consumer loans ​ — ​ 18 ​ — ​ 18 ​ — Total ​ $ 5,609 ​ $ 268 ​ $ 1,180 ​ $ 7,057 ​ $ 116

Deposits (Tables)

Deposits (Tables)	6 Months Ended
	Jun. 30, 2020
Deposits [Abstract]
Summary of Outstanding Balance of Deposits and Average Rates	The following table summarizes the outstanding balance of deposits and average rates paid thereon as of: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 ​ ​ ​ ​ ​ ​ ​ Weighted ​ ​ ​ ​ Weighted ​ ​ (dollars in thousands) ​ Amount ​ Average Rate ​ Amount ​ Average Rate ​ ​ Demand deposits: ​ ​ ​ Noninterest-bearing ​ $ 1,770,382 — ​ $ 1,192,481 — ​ ​ Interest-bearing ​ 411,053 0.308 % 386,276 0.635 % ​ Money market and savings ​ 1,643,871 0.799 % 1,334,736 1.355 % ​ Certificates of deposits ​ 1,822,535 1.277 % 1,977,651 1.971 % ​ Total ​ $ 5,647,841 0.667 % $ 4,891,144 1.217 % ​

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2020
Leases [Abstract]
Schedule Of Supplemental Lease Information	Supplemental lease information at or for the six months ended June 30, 2020 is as follows: ​ ​ ​ ​ ​ (dollars in thousands) ​ ​ Balance Sheet: ​ ​ Operating lease asset classified as other assets ​ $ 16,943 ​ Operating lease liability classified as other liabilities ​ 18,265 ​ ​ ​ ​ ​ ​ Income Statement: ​ ​ Operating lease cost classified as occupancy and equipment expense ​ $ 2,959 ​ ​ ​ ​ ​ ​ Weighted average lease term, in years ​ 3.94 ​ Weighted average discount rate ​ 5.29 % Operating cash flows ​ $ 2,905 ​
Summary of Maturity of Remaining Lease Liabilities	The table below summarizes the maturity of remaining lease liabilities at June 30, 2020: ​ ​ ​ ​ (dollars in thousands) ​ ​ 2020 ​ $ 3,236 2021 ​ 6,292 2022 ​ 5,344 2023 ​ 2,526 2024 and after ​ 4,345 Total future minimum lease payments ​ $ 21,743 Discount on cash flows ​ (3,478) Total lease liability ​ $ 18,265

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quarter Ended ​ Quarter Ended ​ ​ ​ June 30, 2020 ​ June 30, 2019 ​ (dollars in thousands, except per share amounts) ​ Basic ​ Diluted ​ Basic ​ Diluted ​ Net income $ 17,854 $ 17,854 ​ $ 12,410 $ 12,410 ​ Basic common shares outstanding ​ 44,620,716 ​ 44,620,716 ​ 44,625,673 ​ 44,625,673 ​ Effect of contingent shares issuable ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 1,592 ​ Effect of options and restricted stock ​ ​ ​ ​ ​ 191,653 ​ ​ ​ ​ ​ 267,455 ​ Diluted common shares outstanding ​ ​ 44,812,369 ​ ​ 44,894,720 ​ Earnings per share ​ $ 0.40 ​ $ 0.40 ​ $ 0.28 ​ $ 0.28 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended ​ Six Months Ended ​ ​ June 30, 2020 ​ June 30, 2019 (dollars in thousands, except share and per share amounts) ​ Basic ​ Diluted ​ Basic ​ Diluted Net income $ 31,065 $ 31,065 ​ $ 23,669 $ 23,669 Basic common shares outstanding ​ 44,645,189 ​ 44,645,189 ​ 44,583,503 ​ 44,583,503 Effect of contingent shares issuable ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ 1,592 Effect of options and restricted stock ​ ​ ​ ​ ​ 237,331 ​ ​ ​ ​ ​ 261,684 Diluted common shares outstanding ​ ​ 44,882,520 ​ ​ 44,846,779 Earnings per share ​ $ 0.70 ​ $ 0.69 ​ $ 0.53 ​ $ 0.53

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Key Operating Results of Business Segments	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Wealth ​ ​ ​ ​ (dollars in thousands) ​ Banking ​ Management ​ Other Total Quarter ended June 30, 2020: ​ ​ ​ ​ Interest income ​ $ 61,932 ​ $ — ​ $ — ​ $ 61,932 Interest expense ​ 13,435 ​ — ​ 50 ​ 13,485 Net interest income ​ 48,497 ​ — ​ (50) ​ 48,447 Provision for credit losses ​ 1,367 ​ — ​ — ​ 1,367 Noninterest income ​ 3,635 ​ 5,631 ​ (297) ​ 8,969 Noninterest expense ​ 25,042 ​ 5,404 ​ 491 ​ 30,937 Income (loss) before taxes on income ​ $ 25,723 ​ $ 227 ​ $ (838) ​ $ 25,112 Quarter ended June 30, 2019: ​ ​ ​ ​ Interest income ​ $ 63,308 ​ $ — ​ $ — ​ $ 63,308 Interest expense ​ 21,322 ​ — ​ 99 ​ 21,421 Net interest income ​ 41,986 ​ — ​ (99) ​ 41,887 Provision for credit losses ​ 1,231 ​ — ​ — ​ 1,231 Noninterest income ​ 3,471 ​ 5,982 ​ (322) ​ 9,131 Noninterest expense ​ 25,801 ​ 5,567 ​ 914 ​ 32,282 Income (loss) before taxes on income ​ $ 18,425 ​ $ 415 ​ $ (1,335) ​ $ 17,505 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Wealth ​ ​ ​ ​ (dollars in thousands) ​ Banking ​ Management ​ Other Total Six Months Ended June 30, 2020: ​ ​ ​ ​ Interest income ​ $ 124,270 ​ $ — ​ $ — ​ $ 124,270 Interest expense ​ 30,875 ​ — ​ 80 ​ 30,955 Net interest income ​ 93,395 ​ — ​ (80) ​ 93,315 Provision for credit losses ​ 5,431 ​ — ​ — ​ 5,431 Noninterest income ​ 8,294 ​ 12,119 ​ (769) ​ 19,644 Noninterest expense ​ 51,286 ​ 11,569 ​ 954 ​ 63,809 Income (loss) before taxes on income ​ $ 44,972 ​ $ 550 ​ $ (1,803) ​ $ 43,719 Six Months Ended June 30, 2019: ​ ​ ​ ​ Interest income ​ $ 123,852 ​ $ — ​ $ — ​ $ 123,852 Interest expense ​ 40,804 ​ — ​ 114 ​ 40,918 Net interest income ​ 83,048 ​ — ​ (114) ​ 82,934 Provision for credit losses ​ 1,771 ​ — ​ — ​ 1,771 Noninterest income ​ 6,465 ​ 11,713 ​ (582) ​ 17,596 Noninterest expense ​ 52,388 ​ 11,085 ​ 1,754 ​ 65,227 Income (loss) before taxes on income ​ $ 35,354 ​ $ 628 ​ $ (2,450) ​ $ 33,532

Basis of Presentation (Details)

Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accounting Policies [Abstract]
Provision for credit losses for loans			$ 3,060	$ 1,771
Provision for credit losses for securities AFS			2,371
Total provision for credit losses	$ 1,367	$ 1,231	$ 5,431	$ 1,771

Fair Value Measurements - Recor

Fair Value Measurements - Recorded Amounts of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	$ 861,407	$ 1,014,966
Investment in equity securities	299	434
Other
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	1,493	1,449
Interest Rate Swaps
Derivatives:
Derivative liabilities	11,688
Agency Mortgage-backed Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	773,131	914,977
Beneficial interest - FHLMC securitizations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	28,956	42,706
Fair Value on Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment in equity securities	299	434
Total assets at fair value on a recurring basis	861,706	1,015,400
Fair Value on Recurring Basis | Other
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	1,493	1,449
Fair Value on Recurring Basis | Interest Rate Swaps
Derivatives:
Derivative liabilities	11,688
Fair Value on Recurring Basis | Agency Mortgage-backed Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	773,131	914,977
Fair Value on Recurring Basis | Beneficial interest - FHLMC securitizations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	28,956	42,706
Fair Value on Recurring Basis | Corporate Bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	57,827	55,834
Fair Value Measurement Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	407	403
Investment in equity securities	299	434
Fair Value Measurement Level 1 | Fair Value on Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment in equity securities	299	434
Total assets at fair value on a recurring basis	706	837
Fair Value Measurement Level 1 | Fair Value on Recurring Basis | Other
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	407	403
Fair Value Measurement Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	832,044	971,857
Fair Value Measurement Level 2 | Interest Rate Swaps
Derivatives:
Derivative liabilities	11,688
Fair Value Measurement Level 2 | Fair Value on Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets at fair value on a recurring basis	832,044	971,857
Fair Value Measurement Level 2 | Fair Value on Recurring Basis | Other
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	1,086	1,046
Fair Value Measurement Level 2 | Fair Value on Recurring Basis | Interest Rate Swaps
Derivatives:
Derivative liabilities	11,688
Fair Value Measurement Level 2 | Fair Value on Recurring Basis | Agency Mortgage-backed Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	773,131	914,977
Fair Value Measurement Level 2 | Fair Value on Recurring Basis | Corporate Bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	57,827	55,834
Fair Value Measurement Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	28,956	42,706
Fair Value Measurement Level 3 | Fair Value on Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets at fair value on a recurring basis	28,956	42,706
Fair Value Measurement Level 3 | Fair Value on Recurring Basis | Beneficial interest - FHLMC securitizations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	$ 28,956	$ 42,706

Fair Value Measurements - Valua

Fair Value Measurements - Valuation assumptions (Details)	6 Months Ended
	Jun. 30, 2020USD ($)	Dec. 31, 2019USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale, value to be reduced	$ 2,400,000
Reserves related to impaired loans	911,000	$ 870,000
Fair Value Measurement Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total collateral dependent impaired loans	18,700,000	18,900,000
Reserves related to impaired loans	$ 0	$ 0
Fair Value Measurement Level 3 | Prepayment Rate | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Alternative investment measurement input	0.15	0.15
Fair Value Measurement Level 3 | Prepayment Rate | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Alternative investment measurement input	0.25	0.25
Fair Value Measurement Level 3 | Discount Rate | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Alternative investment measurement input	0.075	0.075
Fair Value Measurement Level 3 | Discount Rate | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Alternative investment measurement input	0.10	0.10

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amounts and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 414,179	$ 65,387
Securities AFS, net	861,407	1,014,966
Loans held for sale	527,970	503,036
Loans, net	5,108,683	4,526,833
Investment in FHLB stock	23,598	21,519
Investment in equity securities	299	434
Liabilities:
Deposits	5,647,841	4,891,144
Borrowings	764,600	743,000
Assets Fair Value:
Cash and cash equivalents	414,179	65,387
Securities AFS, net	861,407	1,014,966
Loans held for sale	533,565	506,750
Loans, net	5,163,076	4,573,516
Investment in FHLB stock	23,598	21,519
Investment in equity securities	299	434
Liabilities Fair Value:
Deposits	5,657,313	4,891,145
Borrowings	764,600	743,000
Fair Value Measurement Level 1
ASSETS
Securities AFS, net	407	403
Investment in equity securities	299	434
Assets Fair Value:
Cash and cash equivalents	414,179	65,387
Securities AFS, net	407	403
Investment in equity securities	299	434
Liabilities Fair Value:
Deposits	3,825,306	2,913,493
Fair Value Measurement Level 2
ASSETS
Securities AFS, net	832,044	971,857
Investment in FHLB stock	23,598	21,519
Assets Fair Value:
Securities AFS, net	832,044	971,857
Loans held for sale	533,565	506,750
Investment in FHLB stock	23,598	21,519
Liabilities Fair Value:
Deposits	1,832,007	1,977,652
Borrowings	760,000	733,000
Fair Value Measurement Level 3
ASSETS
Securities AFS, net	28,956	42,706
Assets Fair Value:
Securities AFS, net	28,956	42,706
Loans, net	5,163,076	4,573,516
Liabilities Fair Value:
Borrowings	4,600	$ 10,000
Interest Rate Swaps
Liabilities:
Derivative liabilities	11,688
Liabilities Fair Value:
Derivative liabilities	11,688
Interest Rate Swaps | Fair Value Measurement Level 2
Liabilities:
Derivative liabilities	11,688
Liabilities Fair Value:
Derivative liabilities	$ 11,688
Minimum | Interest Rate Swaps
ASSETS
Duration of interest rate swap	1 year
Maximum | Interest Rate Swaps
ASSETS
Duration of interest rate swap	30 years
Maximum | LIBOR | Interest Rate Swaps
ASSETS
Duration of interest rate swap	1 year

Securities - Summary of AFS Sec

Securities - Summary of AFS Securities Portfolio (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	$ 856,283	$ 1,008,921
Gross Unrealized gains	13,154	12,872
Gross Unrealized losses	(5,659)	(6,827)
Allowance for credit losses ("ACL")	(2,371)
Estimated Fair Value	861,407	1,014,966
Other
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	1,399	1,386
Gross Unrealized gains	94	63
Estimated Fair Value	1,493	1,449
Agency Mortgage-backed Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	761,247	905,949
Gross Unrealized gains	11,884	9,174
Gross Unrealized losses		(146)
Estimated Fair Value	773,131	914,977
Beneficial interest - FHLMC securitizations
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	36,637	47,586
Gross Unrealized gains	241	1,801
Gross Unrealized losses	(5,551)	(6,681)
Allowance for credit losses ("ACL")	(2,371)
Estimated Fair Value	28,956	42,706
Corporate Bonds
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	57,000	54,000
Gross Unrealized gains	935	1,834
Gross Unrealized losses	(108)
Estimated Fair Value	$ 57,827	$ 55,834

Securities - Additional Informa

Securities - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Loans pledged as collateral	$ 3,800
Impairment of securities available for sale	$ 2.4
Weighted average yield, total	5.33%	5.27%
US Treasury Securities | Other
Schedule Of Available For Sale Securities [Line Items]
Loans pledged as collateral	$ 0.4
Agency Mortgage-backed Securities
Schedule Of Available For Sale Securities [Line Items]
Loans pledged as collateral	$ 131
Agency Mortgage-backed Securities and Beneficial interests in FHLMC securitization
Schedule Of Available For Sale Securities [Line Items]
Weighted average yield, total	2.48%

Securities - Schedule of Securi

Securities - Schedule of Securities in a Continuous Unrealized Loss Position Aggregated by Investment Category and Length of Time (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Less than 12 months, Fair Value	$ 28,846	$ 26,097
Less than 12 months, Unrealized Loss	(5,227)	(2,858)
12 months or more, Fair Value	346	17,100
12 months or more, Unrealized Loss	(432)	(3,969)
Total, Fair Value	29,192	43,197
Total, Unrealized Loss	(5,659)	(6,827)
Agency Mortgage-backed Securities
Schedule Of Available For Sale Securities [Line Items]
Less than 12 months, Fair Value		5,488
Less than 12 months, Unrealized Loss		(2)
12 months or more, Fair Value		13,880
12 months or more, Unrealized Loss		(144)
Total, Fair Value		19,368
Total, Unrealized Loss		(146)
Beneficial interest - FHLMC securitizations
Schedule Of Available For Sale Securities [Line Items]
Less than 12 months, Fair Value	13,954	20,609
Less than 12 months, Unrealized Loss	(5,119)	(2,856)
12 months or more, Fair Value	346	3,220
12 months or more, Unrealized Loss	(432)	(3,825)
Total, Fair Value	14,300	23,829
Total, Unrealized Loss	(5,551)	$ (6,681)
Corporate Bonds
Schedule Of Available For Sale Securities [Line Items]
Less than 12 months, Fair Value	14,892
Less than 12 months, Unrealized Loss	(108)
Total, Fair Value	14,892
Total, Unrealized Loss	$ (108)

Securities - Schedule of Allowa

Securities - Schedule of Allowance for Credit Losses - Securities AFS (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)
Investments [Abstract]
Provision for credit losses - securities AFS	$ 2,371
Ending Balance for period	2,371
Impairment of securities available for sale	$ 2,400

Securities - Scheduled Maturiti

Securities - Scheduled Maturities of Securities AFS Other than Mortgage Backed Securities and the Related Weighted Average Yield (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Amortized cost, less than one year	$ 400
Amortized cost, one through five years		$ 400
Amortized cost, five through ten years	57,999	54,986
Amortized cost, total	$ 58,399	$ 55,386
Weighted average yield, less than one year	2.16%
Weighted average yield, one through five years		2.25%
Weighted average yield, five through ten years	5.35%	5.29%
Weighted average yield, total	5.33%	5.27%
Estimated fair value, less than one year	$ 407
Estimated fair value, one through five years		$ 403
Estimated fair value, five through ten years	58,913	56,880
Estimated fair value, total	59,320	57,283
Corporate Bonds
Schedule Of Available For Sale Securities [Line Items]
Amortized cost, five through ten years	57,000	54,000
Amortized cost, total	57,000	54,000
Estimated fair value, five through ten years	57,827	55,834
Estimated fair value, total	57,827	55,834
Other
Schedule Of Available For Sale Securities [Line Items]
Amortized cost, less than one year	400
Amortized cost, one through five years		400
Amortized cost, five through ten years	999	986
Amortized cost, total	1,399	1,386
Estimated fair value, less than one year	407
Estimated fair value, one through five years		403
Estimated fair value, five through ten years	1,086	1,046
Estimated fair value, total	$ 1,493	$ 1,449

Loans - Summary of Loans (Detai

Loans - Summary of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Total loans	$ 5,130,006	$ 4,535,885
Premiums, discounts and deferred fees and expenses	6,806	11,748
Loans, net of deferred fees	5,136,812	4,547,633
Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total loans	3,395,869	3,015,100
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans	774,939	834,042
Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	875,464	600,213
Consumer Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	18,640	16,273
Land
Accounts Notes And Loans Receivable [Line Items]
Total loans	65,094	70,257
Real Estate Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	4,235,902	3,919,399
Real Estate Loans | Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total loans	3,395,869	3,015,100
Real Estate Loans | Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans	774,939	834,042
Real Estate Loans | Land
Accounts Notes And Loans Receivable [Line Items]
Total loans	65,094	70,257
Multifamily | Real Estate Loans | Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total loans	2,556,332	2,143,919
Single Family | Real Estate Loans | Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total loans	$ 839,537	$ 871,181

Loans - Acquired (Details)

Loans - Acquired (Details) $ in Millions	Dec. 31, 2019USD ($)
Receivables [Abstract]
Loans acquired	$ 8.4

Loans - Carrying Amount of Purc

Loans - Carrying Amount of Purchased Credit Impaired Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Net loans	$ 5,108,683	$ 4,526,833
Receivables Acquired with Deteriorated Credit Quality
Accounts Notes And Loans Receivable [Line Items]
Total impaired loans	6,137	8,173
Unaccreted discount on purchased credit impaired loans		(3,657)
Net loans	6,137	4,516
Residential Properties | Receivables Acquired with Deteriorated Credit Quality
Accounts Notes And Loans Receivable [Line Items]
Net loans	291
Commercial Real Estate | Receivables Acquired with Deteriorated Credit Quality
Accounts Notes And Loans Receivable [Line Items]
Net loans	5,529	3,327
Commercial and Industrial Loans | Receivables Acquired with Deteriorated Credit Quality
Accounts Notes And Loans Receivable [Line Items]
Total impaired loans	317	603
Net loans	317	408
Land | Receivables Acquired with Deteriorated Credit Quality
Accounts Notes And Loans Receivable [Line Items]
Net loans		781
Real Estate Loans | Receivables Acquired with Deteriorated Credit Quality
Accounts Notes And Loans Receivable [Line Items]
Total impaired loans	5,820	7,570
Real Estate Loans | Residential Properties | Receivables Acquired with Deteriorated Credit Quality
Accounts Notes And Loans Receivable [Line Items]
Total impaired loans	291	366
Real Estate Loans | Commercial Real Estate | Receivables Acquired with Deteriorated Credit Quality
Accounts Notes And Loans Receivable [Line Items]
Total impaired loans	$ 5,529	6,146
Real Estate Loans | Land | Receivables Acquired with Deteriorated Credit Quality
Accounts Notes And Loans Receivable [Line Items]
Total impaired loans		$ 1,058

Loans - Summary of Delinquent a

Loans - Summary of Delinquent and Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	$ 30,039	$ 23,685
90 Days or More Past Due and Still Accruing		403
Nonaccrual Past Due and Still Accruing	15,512	12,867
Current	5,099,967	4,512,200
Loans, net of deferred fees	5,136,812	4,547,633
Total loans	$ 5,130,006	$ 4,535,885
Percentage of Total Loans Due 30-59 Days	0.18%	0.19%
Percentage of Total Loans Due 60-89 Days	0.10%	0.04%
Percentage of Total Loans Due 90 Days or More		0.01%
Percentage of Total Loans Due Nonaccrual	0.30%	0.28%
Percentage of Total Loans	0.59%	0.52%
Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total loans	$ 3,395,869	$ 3,015,100
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans	774,939	834,042
Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	8,384	11,416
Nonaccrual Past Due and Still Accruing	5,648	8,714
Current	867,080	588,797
Total loans	875,464	600,213
Consumer Loans
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	367	25
Nonaccrual Past Due and Still Accruing	17
Current	18,273	16,248
Total loans	18,640	16,273
Land
Accounts Notes And Loans Receivable [Line Items]
Total loans	65,094	70,257
30-59 Days
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	9,228	8,392
30-59 Days | Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	2,051	695
30-59 Days | Consumer Loans
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	350	22
60-89 Days
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	5,299	2,023
60-89 Days | Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	685	2,007
60-89 Days | Consumer Loans
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual		3
Real Estate Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	4,235,902	3,919,399
Real Estate Loans | Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	12,599	1,845
Nonaccrual Past Due and Still Accruing	7,027	1,743
Current	3,383,270	3,013,255
Total loans	3,395,869	3,015,100
Real Estate Loans | Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	7,734	10,399
90 Days or More Past Due and Still Accruing		403
Nonaccrual Past Due and Still Accruing	2,320	2,410
Current	767,205	823,643
Total loans	774,939	834,042
Real Estate Loans | Land
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	955
Nonaccrual Past Due and Still Accruing	500
Current	64,139	70,257
Total loans	65,094	70,257
Real Estate Loans | 30-59 Days | Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	5,572	89
Real Estate Loans | 30-59 Days | Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	1,255	7,586
Real Estate Loans | 60-89 Days | Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual		$ 13
Real Estate Loans | 60-89 Days | Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	4,159
Real Estate Loans | 60-89 Days | Land
Accounts Notes And Loans Receivable [Line Items]
Total Past Due and Nonaccrual	$ 455

Loans - Composition of TDRs by

Loans - Composition of TDRs by Accrual and Nonaccrual Status (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Troubled Debt Restructurings, Nonaccrual	$ 15,512	$ 12,867
Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Troubled Debt Restructurings, Nonaccrual	5,648	8,714
Principal Reduction And Extended Maturity
Accounts Notes And Loans Receivable [Line Items]
Troubled Debt Restructurings, Accrual	2,954	2,945
Troubled Debt Restructurings, Nonaccrual	5,249	5,138
Troubled Debt Restructurings, Total	8,203	8,083
Principal Reduction And Extended Maturity | Residential Loans
Accounts Notes And Loans Receivable [Line Items]
Troubled Debt Restructurings, Accrual	1,200	1,200
Troubled Debt Restructurings, Total	1,200	1,200
Principal Reduction And Extended Maturity | Commercial Real Estate Loans
Accounts Notes And Loans Receivable [Line Items]
Troubled Debt Restructurings, Accrual	1,148	1,188
Troubled Debt Restructurings, Nonaccrual	1,374	2,166
Troubled Debt Restructurings, Total	2,522	3,354
Principal Reduction And Extended Maturity | Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Troubled Debt Restructurings, Accrual	606	557
Troubled Debt Restructurings, Nonaccrual	3,875	2,972
Troubled Debt Restructurings, Total	$ 4,481	$ 3,529

Loans - Schedule of Detail of L

Loans - Schedule of Detail of Loans Modified as Troubled Debt Restructurings (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020USD ($)loan	Dec. 31, 2019USD ($)loan
Financing Receivable Modifications [Line Items]
Number of loans | loan	1	9
Outstanding recorded investment, pre-modification	$ 521	$ 5,826
Outstanding recorded investment, post-modification	$ 521	$ 5,826
Residential Loans
Financing Receivable Modifications [Line Items]
Number of loans | loan		1
Outstanding recorded investment, pre-modification		$ 1,200
Outstanding recorded investment, post-modification		$ 1,200
Commercial Real Estate Loans
Financing Receivable Modifications [Line Items]
Number of loans | loan		1
Outstanding recorded investment, pre-modification		$ 2,872
Outstanding recorded investment, post-modification		$ 2,872
Commercial and Industrial Loans
Financing Receivable Modifications [Line Items]
Number of loans | loan	1	7
Outstanding recorded investment, pre-modification	$ 521	$ 1,754
Outstanding recorded investment, post-modification	$ 521	$ 1,754

Allowance for Credit Losses - B

Allowance for Credit Losses - Bank's Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	$ 18,785	$ 20,800	$ 19,000
Provision for Credit Losses	9,756	12,035	2,637
Charge-offs	(525)	(1,055)	(2,692)
Recoveries	113	564	1,855
Ending Balance	28,129	28,129	20,800
ASC 326
Financing Receivable Allowance For Credit Losses [Line Items]
Changes due to adoption		(4,215)
Residential Properties
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	6,026	8,423	9,216
Provision for Credit Losses	730	(1,304)	(793)
Ending Balance	6,756	6,756	8,423
Residential Properties | ASC 326
Financing Receivable Allowance For Credit Losses [Line Items]
Changes due to adoption		(363)
Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	1,178	4,166	4,547
Provision for Credit Losses	8,133	8,905	(381)
Ending Balance	9,311	9,311	4,166
Commercial Real Estate | ASC 326
Financing Receivable Allowance For Credit Losses [Line Items]
Changes due to adoption		(3,760)
Commercial and Industrial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	10,125	7,448	4,628
Provision for Credit Losses	(1,225)	1,531	3,653
Charge-offs	(525)	(1,055)	(2,687)
Recoveries	113	564	1,854
Ending Balance	8,488	8,488	7,448
Consumer Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	204	190	218
Provision for Credit Losses	2	16	(24)
Charge-offs			(5)
Recoveries			1
Ending Balance	206	206	190
Land
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	1,252	573	391
Provision for Credit Losses	2,116	2,887	182
Ending Balance	$ 3,368	3,368	$ 573
Land | ASC 326
Financing Receivable Allowance For Credit Losses [Line Items]
Changes due to adoption		$ (92)

Allowance for Credit Losses -_2

Allowance for Credit Losses - Balance in Allowance for Credit Losses and Recorded Investment in Loans by Impairment (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable Impaired [Line Items]
Allowance for Credit Losses, Individually Evaluated for Impairment	$ 1,203	$ 870
Allowance for Credit Losses, Collectively Evaluated for Impairment	26,926	19,930
Total Allowance for Credit Losses	28,129	20,800
Total Allowance for Credit Losses	28,129	20,800
Unaccreted Credit Component Other Loans		2,345
Loans, Individually Evaluated for Impairment	18,686	18,902
Loans, Collectively Evaluated for Impairment	5,105,183	4,512,467
Loans, Purchased Impaired	5,108,683	4,526,833
Total loans	5,130,006	4,535,885
Unaccreted Credit Component Other Loans		443,765
Receivables Acquired with Deteriorated Credit Quality
Financing Receivable Impaired [Line Items]
Loans, Purchased Impaired	6,137	4,516
Residential Properties
Financing Receivable Impaired [Line Items]
Allowance for Credit Losses, Individually Evaluated for Impairment	34
Allowance for Credit Losses, Collectively Evaluated for Impairment	6,722	8,423
Total Allowance for Credit Losses	6,756	8,423
Unaccreted Credit Component Other Loans		1,013
Loans, Individually Evaluated for Impairment	5,556	2,897
Loans, Collectively Evaluated for Impairment	3,390,022	3,012,203
Total loans	3,395,869	3,015,100
Unaccreted Credit Component Other Loans		189,339
Residential Properties | Receivables Acquired with Deteriorated Credit Quality
Financing Receivable Impaired [Line Items]
Loans, Purchased Impaired	291
Commercial Real Estate
Financing Receivable Impaired [Line Items]
Allowance for Credit Losses, Individually Evaluated for Impairment	385	107
Allowance for Credit Losses, Collectively Evaluated for Impairment	8,926	4,059
Total Allowance for Credit Losses	9,311	4,166
Unaccreted Credit Component Other Loans		1,048
Loans, Individually Evaluated for Impairment	6,546	6,689
Loans, Collectively Evaluated for Impairment	762,864	824,026
Total loans	774,939	834,042
Unaccreted Credit Component Other Loans		201,370
Commercial Real Estate | Receivables Acquired with Deteriorated Credit Quality
Financing Receivable Impaired [Line Items]
Loans, Purchased Impaired	5,529	3,327
Commercial and Industrial Loans
Financing Receivable Impaired [Line Items]
Allowance for Credit Losses, Individually Evaluated for Impairment	784	763
Allowance for Credit Losses, Collectively Evaluated for Impairment	7,704	6,685
Total Allowance for Credit Losses	8,488	7,448
Unaccreted Credit Component Other Loans		277
Loans, Individually Evaluated for Impairment	6,067	9,316
Loans, Collectively Evaluated for Impairment	869,080	590,489
Total loans	875,464	600,213
Unaccreted Credit Component Other Loans		24,143
Commercial and Industrial Loans | Receivables Acquired with Deteriorated Credit Quality
Financing Receivable Impaired [Line Items]
Loans, Purchased Impaired	317	408
Consumer Loans
Financing Receivable Impaired [Line Items]
Allowance for Credit Losses, Collectively Evaluated for Impairment	206	190
Total Allowance for Credit Losses	206	190
Unaccreted Credit Component Other Loans		1
Loans, Individually Evaluated for Impairment	17
Loans, Collectively Evaluated for Impairment	18,623	16,273
Total loans	18,640	16,273
Unaccreted Credit Component Other Loans		253
Land
Financing Receivable Impaired [Line Items]
Allowance for Credit Losses, Collectively Evaluated for Impairment	3,368	573
Total Allowance for Credit Losses	3,368	573
Unaccreted Credit Component Other Loans		6
Loans, Individually Evaluated for Impairment	500
Loans, Collectively Evaluated for Impairment	64,594	69,476
Total loans	$ 65,094	70,257
Unaccreted Credit Component Other Loans		28,660
Land | Receivables Acquired with Deteriorated Credit Quality
Financing Receivable Impaired [Line Items]
Loans, Purchased Impaired		$ 781

Allowance for Credit Losses - A

Allowance for Credit Losses - Additional Information (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Receivables [Abstract]
Allowance of purchase impaired loans		0.53%
Additional allowance on credit impaired loans		$ 300,000
Interest income recognized on impaired loans	$ 0	$ 0

Allowance for Credit Losses - R

Allowance for Credit Losses - Risk Category of Loans by Class of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Total loans	$ 5,130,006	$ 4,535,885
Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total loans	3,395,869	3,015,100
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans	774,939	834,042
Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	875,464	600,213
Consumer Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	18,640	16,273
Land
Accounts Notes And Loans Receivable [Line Items]
Total loans	65,094	70,257
Pass
Accounts Notes And Loans Receivable [Line Items]
Total loans	5,086,263	4,498,530
Pass | Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total loans	3,383,143	3,012,203
Pass | Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans	760,071	821,425
Pass | Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	859,832	579,153
Pass | Consumer Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	18,623	16,273
Pass | Land
Accounts Notes And Loans Receivable [Line Items]
Total loans	64,594	69,476
Special Mention
Accounts Notes And Loans Receivable [Line Items]
Total loans	6,487	8,881
Special Mention | Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans	663	679
Special Mention | Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	5,824	8,202
Substandard Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	18,570	9,572
Substandard Loans | Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total loans	7,170
Substandard Loans | Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans	7,659	5,249
Substandard Loans | Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	3,741	3,542
Substandard Loans | Land
Accounts Notes And Loans Receivable [Line Items]
Total loans		781
Loans Individually Evaluated
Accounts Notes And Loans Receivable [Line Items]
Total loans	18,686	18,902
Loans Individually Evaluated | Residential Properties
Accounts Notes And Loans Receivable [Line Items]
Total loans	5,556	2,897
Loans Individually Evaluated | Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans	6,546	6,689
Loans Individually Evaluated | Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	6,067	$ 9,316
Loans Individually Evaluated | Consumer Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans	17
Loans Individually Evaluated | Land
Accounts Notes And Loans Receivable [Line Items]
Total loans	$ 500

Allowance for Credit Losses -_3

Allowance for Credit Losses - Risk Category of Loans Based on Year of Origination (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment [Line Items]
2020	$ 1,104,961
2019	1,110,686
2018	988,038
2017	639,920
2016	452,211
Prior	566,569
Revolving Loans	267,621
Total loans	5,130,006	$ 4,535,885
Pass
Financing Receivable Recorded Investment [Line Items]
2020	1,104,135
2019	1,106,552
2018	984,968
2017	634,831
2016	447,369
Prior	548,638
Revolving Loans	259,770
Total loans	5,086,263	4,498,530
Classified
Financing Receivable Recorded Investment [Line Items]
2020	826
2019	4,134
2018	3,070
2017	5,089
2016	4,842
Prior	17,931
Revolving Loans	7,851
Total loans	43,743
Residential Properties
Financing Receivable Recorded Investment [Line Items]
Total loans	3,395,869	3,015,100
Residential Properties | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	3,383,143	3,012,203
Residential Properties | Multifamily
Financing Receivable Recorded Investment [Line Items]
2020	714,812
2019	694,794
2018	590,767
2017	326,321
2016	156,876
Prior	72,762
Total loans	2,556,332
Residential Properties | Multifamily | Pass
Financing Receivable Recorded Investment [Line Items]
2020	714,812
2019	694,794
2018	590,767
2017	326,321
2016	156,876
Prior	72,762
Total loans	2,556,332
Residential Properties | Single Family
Financing Receivable Recorded Investment [Line Items]
2020	75,833
2019	103,177
2018	142,061
2017	129,641
2016	128,707
Prior	230,599
Revolving Loans	29,519
Total loans	839,537
Residential Properties | Single Family | Pass
Financing Receivable Recorded Investment [Line Items]
2020	75,833
2019	103,177
2018	142,061
2017	127,670
2016	128,707
Prior	222,836
Revolving Loans	26,527
Total loans	826,811
Residential Properties | Single Family | Classified
Financing Receivable Recorded Investment [Line Items]
2017	1,971
Prior	7,763
Revolving Loans	2,992
Total loans	12,726
Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
2020	7,753
2019	108,624
2018	141,335
2017	139,555
2016	137,620
Prior	240,052
Total loans	774,939	834,042
Commercial Real Estate | Pass
Financing Receivable Recorded Investment [Line Items]
2020	7,753
2019	108,580
2018	141,335
2017	137,158
2016	135,078
Prior	230,167
Total loans	760,071	821,425
Commercial Real Estate | Classified
Financing Receivable Recorded Investment [Line Items]
2019	44
2017	2,397
2016	2,542
Prior	9,885
Total loans	14,868
Land and Construction
Financing Receivable Recorded Investment [Line Items]
2019	14,647
2018	26,298
2017	22,311
2016	783
Prior	1,055
Total loans	65,094
Land and Construction | Pass
Financing Receivable Recorded Investment [Line Items]
2019	14,647
2018	25,798
2017	22,311
2016	783
Prior	1,055
Total loans	64,594
Land and Construction | Classified
Financing Receivable Recorded Investment [Line Items]
2018	500
Total loans	500
Commercial and Industrial Loans
Financing Receivable Recorded Investment [Line Items]
2020	304,859
2019	189,444
2018	86,147
2017	22,070
2016	21,164
Prior	21,967
Revolving Loans	229,813
Total loans	875,464	600,213
Commercial and Industrial Loans | Pass
Financing Receivable Recorded Investment [Line Items]
2020	304,033
2019	185,354
2018	83,577
2017	21,366
2016	18,864
Prior	21,684
Revolving Loans	224,954
Total loans	859,832	579,153
Commercial and Industrial Loans | Classified
Financing Receivable Recorded Investment [Line Items]
2020	826
2019	4,090
2018	2,570
2017	704
2016	2,300
Prior	283
Revolving Loans	4,859
Total loans	15,632
Consumer Loans
Financing Receivable Recorded Investment [Line Items]
2020	1,704
2018	1,430
2017	22
2016	7,061
Prior	134
Revolving Loans	8,289
Total loans	18,640	16,273
Consumer Loans | Pass
Financing Receivable Recorded Investment [Line Items]
2020	1,704
2018	1,430
2017	5
2016	7,061
Prior	134
Revolving Loans	8,289
Total loans	18,623	$ 16,273
Consumer Loans | Classified
Financing Receivable Recorded Investment [Line Items]
2017	17
Total loans	$ 17

Allowance for Credit Losses - E

Allowance for Credit Losses - Evaluation of Loans and Related Allowance (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable Modifications [Line Items]
Unpaid Principal Balance, With No Allowance Recorded	$ 14,457	$ 15,138
Recorded Investment, With No Allowance Recorded	13,764	14,061
Unpaid Principal Balance, With an Allowance Recorded	5,156	4,952
Recorded Investment, With an Allowance Recorded	4,922	4,841
Related Allowance, With an Allowance Recorded	911	870
Residential Properties
Financing Receivable Modifications [Line Items]
Unpaid Principal Balance, With No Allowance Recorded	4,849	2,970
Recorded Investment, With No Allowance Recorded	4,803	2,897
Unpaid Principal Balance, With an Allowance Recorded	801
Recorded Investment, With an Allowance Recorded	753
Related Allowance, With an Allowance Recorded	32
Commercial Real Estate
Financing Receivable Modifications [Line Items]
Unpaid Principal Balance, With No Allowance Recorded	5,686	5,683
Recorded Investment, With No Allowance Recorded	5,398	5,456
Unpaid Principal Balance, With an Allowance Recorded	1,148	1,188
Recorded Investment, With an Allowance Recorded	1,148	1,188
Related Allowance, With an Allowance Recorded	101	107
Commercial and Industrial Loans
Financing Receivable Modifications [Line Items]
Unpaid Principal Balance, With No Allowance Recorded	3,405	6,485
Recorded Investment, With No Allowance Recorded	3,046	5,708
Unpaid Principal Balance, With an Allowance Recorded	3,207	3,764
Recorded Investment, With an Allowance Recorded	3,021	3,653
Related Allowance, With an Allowance Recorded	778	$ 763
Consumer Loans
Financing Receivable Modifications [Line Items]
Unpaid Principal Balance, With No Allowance Recorded	17
Recorded Investment, With No Allowance Recorded	17
Land
Financing Receivable Modifications [Line Items]
Unpaid Principal Balance, With No Allowance Recorded	500
Recorded Investment, With No Allowance Recorded	$ 500

Allowance for Credit Losses - W

Allowance for Credit Losses - Weighted Average Annualized Balance of Recorded Investment and Interest Income on Loans (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable Modifications [Line Items]
Average Recorded Investment	$ 29,881	$ 21,785
Interest Income	1,035	365
Residential Properties
Financing Receivable Modifications [Line Items]
Average Recorded Investment	6,316	1,765
Interest Income	26	13
Commercial Real Estate
Financing Receivable Modifications [Line Items]
Average Recorded Investment	10,925	8,889
Interest Income	118	341
Commercial and Industrial Loans
Financing Receivable Modifications [Line Items]
Average Recorded Investment	12,450	10,608
Interest Income	891	11
Consumer Loans
Financing Receivable Modifications [Line Items]
Average Recorded Investment	25
Land
Financing Receivable Modifications [Line Items]
Average Recorded Investment	$ 165	$ 523

Allowance for Credit Losses -_4

Allowance for Credit Losses - Amortized Cost Basis of Collateral Dependent Loans Individually Evaluated to Determine Credit Losses and Related ACL Allocated to Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable Allowance For Credit Losses [Line Items]
Total Allowance for Credit Losses	$ 28,129	$ 20,800
Collateral Dependent Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	7,057
Total Allowance for Credit Losses	116
Collateral Dependent Loans | Real Estate.
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	5,609
Collateral Dependent Loans | Cash
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	268
Collateral Dependent Loans | Equipment/Receivables
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	1,180
Collateral Dependent Loans | Residential Properties | Single Family
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	3,649
Collateral Dependent Loans | Residential Properties | Real Estate. | Single Family
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	3,649
Collateral Dependent Loans | Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	421
Collateral Dependent Loans | Commercial Real Estate | Real Estate.
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	421
Collateral Dependent Loans | Commercial and Industrial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	2,469
Total Allowance for Credit Losses	116
Collateral Dependent Loans | Commercial and Industrial Loans | Real Estate.
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	1,039
Collateral Dependent Loans | Commercial and Industrial Loans | Cash
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	250
Collateral Dependent Loans | Commercial and Industrial Loans | Equipment/Receivables
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	1,180
Collateral Dependent Loans | Consumer Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	18
Collateral Dependent Loans | Consumer Loans | Cash
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	18
Collateral Dependent Loans | Land
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	500
Collateral Dependent Loans | Land | Real Estate.
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	$ 500

Loan Sales and Mortgage Servi_2

Loan Sales and Mortgage Servicing Rights (Details) - First Foundation Bank - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Loan Sales And Mortgage Servicing Rights [Line Items]
Gain on sale of loans		$ 4.2
Sale of multifamily loans through securitization		549
Mortgage servicing rights	$ 5.8	7
Valuation allowance of mortgage servicing rights	0.5
Loans serviced for others	1,400	1,700
Servicing fees earned on loans	$ 0.3	$ 0.8

Deposits - Summary of Outstandi

Deposits - Summary of Outstanding Balance of Deposits and Average Rates (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Deposits [Abstract]
Demand deposits, Noninterest-bearing	$ 1,770,382	$ 1,192,481
Demand deposits, Interest-bearing	411,053	386,276
Money market and savings	1,643,871	1,334,736
Certificates of deposits	1,822,535	1,977,651
Total	$ 5,647,841	$ 4,891,144
Demand deposits, Interest-bearing, Weighted Average Rate	0.308%	0.635%
Money market and savings, Weighted Average Rate	0.799%	1.355%
Certificates of deposits, Weighted Average Rate	1.277%	1.971%
Total, Weighted Average Rate	0.667%	1.217%

Deposits - Additional Informati

Deposits - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Deposits [Abstract]
Certificates of deposits of $250,000 or more, maturities within one year	$ 546	$ 471
Certificates of deposits of $250,000 or more, maturities after one year	7	0.8
Certificates of deposits of $250,000 or more, total	553	472
Certificates of deposit of less than $ 250,000, maturities within one year	1,300	1,500
Certificates of deposit of less than $ 250,000, maturities after one year	16	13
Certificates of deposit of less than $250,000, total	$ 1,300	$ 1,500

Borrowings (Details)

Borrowings (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2020USD ($)Institutionitem	Dec. 31, 2017USD ($)	Dec. 31, 2019USD ($)
Debt Instrument [Line Items]
Overnight FHLB advances			$ 233,000,000
FHLB term advances	$ 750,000,000		500,000,000
Number of zero interest advances outstanding | item	2
FHLB zero interest advances	$ 10,000,000
Long-term line of credit	0
Loans pledged as collateral	3,800,000,000
Federal Home Loan Bank, maximum borrowing capacity	1,700,000,000
FHLB advances	760,000,000
Federal Home Loan Bank, additional credit available	282,000,000
Unsecured debt	$ 195,000,000
Number of financial institutions | Institution	5
Unused lines of credit	$ 2,000,000,000		1,400,000,000
FHLB, average daily balance of borrowings outstanding	88,000,000		413,000,000
Secured debt	217,000,000
FHLB Advances Maturing in October 2020
Debt Instrument [Line Items]
FHLB zero interest advances	5,000,000
FHLB Advances Maturing in April 2021
Debt Instrument [Line Items]
FHLB zero interest advances	5,000,000
Minimum
Debt Instrument [Line Items]
Unsecured debt	20,000,000
Maximum
Debt Instrument [Line Items]
Unsecured debt	100,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, borrowing capacity		$ 40,000,000
Line of credit maturity period		5 years
Revolving Credit Facility | 90 Day LIBOR
Debt Instrument [Line Items]
Debt instrument basis point rate		3.50%
1.77% FHLB Term Advances
Debt Instrument [Line Items]
FHLB term advances outstanding	$ 500,000,000
FHLB advances interest rates	1.77%
0.47% FHLB Term Advances
Debt Instrument [Line Items]
FHLB term advances outstanding	$ 250,000,000
FHLB advances interest rates	0.47%
FFI
Debt Instrument [Line Items]
Long-term line of credit	$ 4,600,000		$ 10,000,000
Line of credit facility, Interest rate	4.93%

Leases (Details)

Leases (Details)	6 Months Ended
	Jun. 30, 2020
Leases [Abstract]
Operating lease, existence of options to renew	true

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Lease Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)
Balance Sheet:
Operating lease asset classified as other assets	$ 16,943
Operating Lease Right of Use Asset Statement of Financial Position [Extensible List]	us-gaap:OtherAssets
Operating lease liability classified as other liabilities	$ 18,265
Operating Lease Liability Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilities
Income Statement:
Operating lease cost classified as occupancy and equipment expense	$ 2,959
Weighted average lease term, in years	3 years 11 months 8 days
Weighted average discount rate	5.29%
Operating cash flows	$ 2,905

Leases - Summary of Maturity of

Leases - Summary of Maturity of Remaining Lease Liabilities (Details) $ in Thousands	Jun. 30, 2020USD ($)
Leases [Abstract]
2020	$ 3,236
2021	6,292
2022	5,344
2023	2,526
2024 and after	4,345
Total future minimum lease payments	21,743
Discount on cash flows	(3,478)
Total lease liability	$ 18,265

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net income, Basic	$ 17,854	$ 12,410	$ 31,065	$ 23,669
Basic common shares outstanding	44,620,716	44,625,673	44,645,189	44,583,503
Earnings per share, Basic	$ 0.40	$ 0.28	$ 0.70	$ 0.53
Net income, Diluted	$ 17,854	$ 12,410	$ 31,065	$ 23,669
Effect of contingent shares issuable		1,592		1,592
Effect of options and restricted stock	191,653	267,455	237,331	261,684
Diluted common shares outstanding	44,812,369	44,894,720	44,882,520	44,846,779
Earnings per share, Diluted	$ 0.40	$ 0.28	$ 0.69	$ 0.53

Earnings Per Share - Anti-dilut

Earnings Per Share - Anti-dilutive (Details)	6 Months Ended
	Jun. 30, 2020shares
Restricted Stock Units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per share	59,375

Segment Reporting (Details)

Segment Reporting (Details) - segment	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting [Abstract]
Reportable business segments	2	2	2	2

Segment Reporting - Key Operati

Segment Reporting - Key Operating Results of Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Interest income	$ 61,932	$ 63,308	$ 124,270	$ 123,852
Interest expense	13,485	21,421	30,955	40,918
Net interest income	48,447	41,887	93,315	82,934
Provision for loan losses	1,367	1,231	5,431	1,771
Noninterest income	8,969	9,131	19,644	17,596
Noninterest expense	30,937	32,282	63,809	65,227
Income before taxes on income	25,112	17,505	43,719	33,532
Operating Segments | Banking
Segment Reporting Information [Line Items]
Interest income	61,932	63,308	124,270	123,852
Interest expense	13,435	21,322	30,875	40,804
Net interest income	48,497	41,986	93,395	83,048
Provision for loan losses	1,367	1,231	5,431	1,771
Noninterest income	3,635	3,471	8,294	6,465
Noninterest expense	25,042	25,801	51,286	52,388
Income before taxes on income	25,723	18,425	44,972	35,354
Operating Segments | Wealth Management
Segment Reporting Information [Line Items]
Noninterest income	5,631	5,982	12,119	11,713
Noninterest expense	5,404	5,567	11,569	11,085
Income before taxes on income	227	415	550	628
Other.
Segment Reporting Information [Line Items]
Interest expense	50	99	80	114
Net interest income	(50)	(99)	(80)	(114)
Noninterest income	(297)	(322)	(769)	(582)
Noninterest expense	491	914	954	1,754
Income before taxes on income	$ (838)	$ (1,335)	$ (1,803)	$ (2,450)

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent Event	Jul. 21, 2020$ / shares
Subsequent Event [Line Items]
Dividends payable, date declared	Jul. 21, 2020
Dividends payable, amount per share	$ 0.07
Dividends payable, date to be paid	Aug. 17, 2020
Dividends payable, date of record	Aug. 3, 2020