Sandy Spring Bancorp (SASR) 10-Q 4 May 18 2018 Q1 Quarterly report Financial data

DOCUMENT AND ENTITY INFORMATION

DOCUMENT AND ENTITY INFORMATION - $ / shares	3 Months Ended
	Mar. 31, 2018	Sep. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	SASR
Entity Common Stock, Shares Outstanding		99,999,999
Entity Listing, Par Value Per Share	$ 1
Entity Registrant Name	SANDY SPRING BANCORP INC
Entity Central Index Key	824,410
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF CONDITION - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets
Cash and due from banks	$ 64,064	$ 55,693
Federal funds sold	1,407	2,845
Interest-bearing deposits with banks	153,948	53,962
Cash and cash equivalents	219,419	112,500
Residential mortgage loans held for sale (at fair value)	28,486	9,848
Investments available-for-sale (at fair value)	977,224	729,507
Other equity securities	63,115	45,518
Total loans	6,061,551	4,314,248
Less: allowance for loan losses	(46,931)	(45,257)
Net loans	6,014,620	4,268,991
Premises and equipment, net	60,352	54,761
Other real estate owned	2,761	2,253
Accrued interest receivable	22,383	15,480
Goodwill	342,907	85,768
Other intangible assets, net	11,408	580
Other assets	152,243	121,469
Total assets	7,894,918	5,446,675
Liabilities
Noninterest-bearing deposits	1,767,523	1,264,392
Interest-bearing deposits	3,859,683	2,699,270
Total deposits	5,627,206	3,963,662
Securities sold under retail repurchase agreements and federal funds purchased	149,323	119,359
Advances from FHLB	1,011,109	765,833
Subordinated debentures	37,530	0
Accrued interest payable and other liabilities	55,142	34,005
Total liabilities	6,880,310	4,882,859
Stockholders Equity
Common stock -- par value $1.00; shares authorized 50,000,000; shares issued and outstanding 35,463,269 and 23,996,293 at March 31, 2018 and December 31, 2017, respectively	35,463	23,996
Additional paid in capital	604,399	168,188
Retained earnings	392,364	378,489
Accumulated other comprehensive loss	(17,618)	(6,857)
Total stockholders equity	1,014,608	563,816
Total liabilities and stockholders equity	$ 7,894,918	$ 5,446,675

CONDENSED CONSOLIDATED STATEME3

CONDENSED CONSOLIDATED STATEMENTS OF CONDITION - (Parenthetical) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	35,463,269	23,996,293
Common stock, shares outstanding	35,463,269	23,996,293

CONDENSED CONSOLIDATED STATEME4

CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest Income:
Interest and fees on loans	$ 67,592	$ 40,223
Interest on loans held for sale	368	82
Interest on deposits with banks	357	90
Interest and dividends on investment securities:
Taxable	5,102	3,608
Exempt from federal income taxes	2,072	1,951
Interest on federal funds sold	13	4
Total interest income	75,504	45,958
Interest Expense:
Interest on deposits	6,959	2,488
Interest on retail repurchase agreements and federal funds purchased	108	76
Interest on advances from FHLB	5,078	3,129
Interest on subordinated debt	468	12
Total interest expense	12,613	5,705
Net interest income	62,891	40,253
Provision for loan losses	1,997	194
Net interest income after provision for loan losses	60,894	40,059
Non-interest Income:
Investment securities gains	63	2
Service charges on deposit accounts	2,259	1,964
Mortgage banking activities	2,207	608
Wealth management income	5,061	4,484
Insurance agency commissions	1,824	1,752
Income from bank owned life insurance	2,331	594
Bank card fees	1,370	1,145
Other income	2,003	2,083
Total non-interest income	17,118	12,632
Non-interest Expenses:
Salaries and employee benefits	23,912	17,801
Occupancy expense of premises	4,942	3,402
Equipment expenses	2,225	1,724
Marketing	1,148	663
Outside data services	1,397	1,392
FDIC insurance	1,193	805
Amortization of intangible assets	541	26
Merger expenses	8,958	0
Other Expense	5,325	4,168
Total non-interest expenses	49,641	29,981
Income before income taxes	28,371	22,710
Income tax expense	6,706	7,598
Net income	$ 21,665	$ 15,112
Per share information:
Basic net income per share	$ 0.61	$ 0.63
Diluted net income per share	0.61	0.63
Dividends declared per common share	$ 0.26	$ 0.26

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 21,665	$ 15,112
Investments available-for-sale:
Net change in unrealized gains on investments available-for-sale	(12,689)	1,502
Related income tax expense	3,321	(598)
Net investment gains reclassified into earnings	(63)	(2)
Related income tax expense	16	0
Net effect on other comprehensive income (loss)	(9,415)	902
Defined benefit pension plan:
Recognition of unrealized gain (loss)	250	295
Related income tax (expense) benefit	(119)	(117)
Net effect on other comprehensive income for the period	131	178
Total other comprehensive income	(9,284)	1,080
Comprehensive income	$ 12,381	$ 16,192

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Operating activities:
Net income	$ 21,665	$ 15,112
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,990	1,980
Provision for loan losses	1,997	194	$ 2,977
Stock based compensation expense	582	496
Tax benefits associated with share based compensation	34	239
Deferred income tax expense	(1,673)	(214)
Origination of loans held for sale	(47,975)	(34,895)
Proceeds from sales of loans held for sale	58,121	41,850
(Gains)/ losses on sales of loans held for sale	(2,872)	924
(Gains) losses on sales of other real estate owned	90	(17)
Investment securities gains	(63)	(2)
Increase (Decrease) in Operating Capital [Abstract]
Net (increase) decrease in accrued interest receivable	(397)	57
Net decrease in other assets	11,407	(195)
Net increase (decrease) in accrued expenses and other liabilities	(403)	6,076
Other - net	754	2,654
Net cash provided by operating activities	44,257	34,259
Investing activities:
Proceeds of other equity securities		4,483
Purchases of investments held-to-maturity	(700)
Purchases of investments available-for-sale	(497)	(105,028)
Proceeds from sales of investment available-for-sale	994	0
Proceeds from maturities, calls and principal payments of investments held-to-maturity	0	0
Proceeds from maturities, calls and principal payments of investments available-for-sale	23,975	25,296
Net increase in loans	(123,945)	(77,674)
Proceeds from the sales of other real estate owned	292	759
Proceeds from sales of loans held for investment	59,945	0
Acquisition of business activity, net of cash acquired	32,552	0
Expenditures for premises and equipment	(2,842)	(1,131)
Net cash (used) in investing activities	(10,226)	(153,295)
Financing activities:
Net increase in deposits	52,702	221,654
Net increase/(decrease) in retail repurchase agreements and federal funds purchased	23,078	16,125
Proceeds from advances from FHLB	1,990,000	1,130,000
Repayment of advances from FHLB	(1,984,081)	(1,245,000)
Retirement of subordinated debt	0	(30,000)
Proceeds from issuance of common stock	456	276
Stock tendered for payment of withholding taxes	0	0
Repurchase of common stock	0	0
Dividends paid	(9,267)	(6,275)
Net cash provided by financing activities	72,888	86,780
Net increase (decrease) in cash and cash equivalents	106,919	(32,256)
Cash and cash equivalents at beginning of period	112,500	134,125	134,125
Cash and cash equivalents at end of period	219,419	101,869	$ 112,500
Supplemental Disclosures:
Interest payments	11,680	5,936
Income tax payments	15	7
Transfer of Investments Held-to-maturity to Available For Sale Securities	0	0
Transfer from loans to residential mortgage loans held for sale	60,043	12,374
Transfers from loans to other real estate owned	$ 289	$ 113

CONDENSED CONSOLIDATED STATEME7

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at at Dec. 31, 2016	$ 533,572	$ 23,901	$ 165,871	$ 350,414	$ (6,614)
Net income	15,112	0	0	15,112	0
Other comprehensive income, net of tax	1,080	0	0	0	1,080
Common stock dividends - $0.26, and $0.26 per share at March 31, 2018 and 2017 respectively.	(6,275)	0	0	(6,275)	0
Stock compensation expense	496	0	496	0	0
Common stock issued pursuant to:
Stock option plan - 12,253 and 17,362 shares at March 31 2018 and 2017, respectively	300	17	283	0	0
Employee stock purchase plan - 6,912 and 4,431 shares at March 31, 2018 and 2017 respectively	156	5	151
Restricted stock - 1,514 and 7,288 shares at March 31 2018 and 2017, respectively	(180)	7	(187)	0	0
Balance at at Mar. 31, 2017	544,261	23,930	166,614	359,251	(5,534)
Balance at at Dec. 31, 2017	563,816	23,996	168,188	378,489	(6,857)
Net income	21,665	0	0	21,665	0
Other comprehensive income, net of tax	(9,284)	0	0	0	(9,284)
Common stock dividends - $0.26, and $0.26 per share at March 31, 2018 and 2017 respectively.	(9,267)	0	0	(9,267)	0
Stock compensation expense	582	0	582	0	0
Common stock issued pursuant to:
Acquisition of WashingtonFirst Bankshares Inc. - 11,446,197 shares	446,640	11,446	435,194	0	0
Stock option plan - 12,253 and 17,362 shares at March 31 2018 and 2017, respectively	232	12	220	0	0
Employee stock purchase plan - 6,912 and 4,431 shares at March 31, 2018 and 2017 respectively	224	7	217	0	0
Restricted stock - 1,514 and 7,288 shares at March 31 2018 and 2017, respectively	0	2	(2)	0	0
Reclassfication of tax effects from other comprehensive income	0	0	0	1,477	(1,477)
Balance at at Mar. 31, 2018	$ 1,014,608	$ 35,463	$ 604,399	$ 392,364	$ (17,618)

CONDENSED CONSOLIDATED STATEME8

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Stockholders Equity [Abstract]
Common stock dividends, per share	$ 0.26	$ 0.26
Stock option plan, shares	12,353	17,362
Employee stock purchase plan, shares	6,912	4,431
Restricted stock, shares	1,514	7,288
Number of shares issued by the company, pursuant to WashingtonFirst acquisition	11,446,197,000

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Mar. 31, 2018
Significant Accounting Policies [Abstract]
Significant Accounting Policies	Note 1 – Significant Accounting Policies Nature of Operations Sandy Spring Bancorp (the “Company”), a Maryland corporation, is the bank holding company for Sandy Spring Bank (the “Bank”). The Bank offers a broad range of commercial banking, retail banking , mortgage and trust services throughout central Maryland, Northern Virginia and the greater Washington D.C . market through its oper ation of 55 community offices and six financial centers across the region. The Bank also offers a comprehensive menu of insurance and wealth management services through its subsidiaries, Sandy Spring Insurance Corporation and West Financial Services, Inc. Basis of Presentation The accounting and reporting policies of the Company conform to accounting principles generally accepted in the United States of America (“GAAP”) and prevailing practices within the financial services industry for interim financial information and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and notes required for complete financial statements and prevailing practices within the banking industry. The following summary of significant account ing policies of the Company is presented to assist the reader in understanding the financial and other data presented in this report. Operating results for the three months ended March 31, 2018 are not necessarily indicative of the results that may be expected for any future periods or for the year ending December 31, 2018 . In the opinion of management, all adjustments (comprising only normal recurring accruals) necessary for a fair presentation of the results of the interim periods have been incl uded. Certain reclassifications have been made to prior period amounts, as necessary, to conform to the current period presentation. The Company has evaluated subsequent events through the date of the issuance of its financial statements. These statement s should be read in conjunction with the financial statements and accompanying notes included in the Company’s 2017 Annual Report on Form 10-K as filed with the Securities and Exchange Commission (“SEC”) on February 23, 2018 . There have been no sign ificant changes to the Company’s accounting p olicies as disclosed in the 2017 Annual Report on Form 10-K. Principles of Consolidation The unaudited condensed consolidated financial statements include the accounts of the Company and its wholly owned su bsidiary, Sandy Spring Bank and its subsidiaries, Sandy Spring Insurance Corporation and West Financial Services, Inc. Consolidation has resulted in the elimination of all intercompany accounts and transactions. Use of Estimates The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements, and affect the reported a mounts of revenues earned and expenses incurred during the reporting period. Actual results could differ from those estimates. Estimates that could change significantly relate to the provision for loan losses and the related allowance, determination of imp aired loans and the related measurement of impairment, potential impairment of goodwill or other intangible assets, valuation of investment securities and the determination of whether impaired securities are other-than-temporarily impaired, valuation of ot her real estate owned, prepayment rates, valuation of share-based compensation, the assessment that a liability should be recognized with respect to any matters under litigation, the calculation of current and deferred income taxes and the actuarial projec tions related to pension expense and the related liability. Cash Flows For purposes of reporting cash flows, cash and cash equivalents include cash and due from banks, federal funds sold and interest-bearing deposits with banks (items with stated original maturity of three months or less). Revenue from Contracts with Customers The Company’s revenue includes net interest income on financial instruments and non-interest income. Specific categories of revenue are presented in the Condensed Consolidated Statements of Income. Most of the Company’s revenue is not within the scope of Accounting Standard Update (ASU) No. 2014-09 – Revenue from Contracts with Customers. For revenue within the scope of ASU 2014-09, the Company provides services to customers and has related performance obligations. The revenue is recognized upon satisfaction of all contractual performance obligations. The following discusses key revenue streams within the scope of the new revenue recognition guidance. Wealth Management Income We st Financial Services, Inc., a subsidiary of the Bank, provides comprehensive investment management and financial planning services. Wealth management income is comprised of income for providing trust, estate and investment management services. Trust servi ces include acting as a trustee for corporate or personal trusts. Investment management services include investment management, record-keeping and reporting of security portfolios. Fees for these services are recognized based on contractually agreed fixed percentage applied to net assets under management at the end of each reporting period. The Company does not charge/recognize any performance based fees. Insurance Agency Commissions Sandy Spring Insurance, the Company’s subsidiary, performs the function o f an insurance intermediary by introducing the policyholder and insurer and is compensated by a commission fee for placement of an insurance policy. Sandy Spring Insurance does not provide any captive management services or any claim handling services. Com mission fees are set as a percentage of the premium for the insurance policy for which the Sandy Spring Insurance is a producer. The Company recognizes revenue when the insurance policy has been contractually agreed to by the insurer and policyholder (at t ransaction date). Service Charges on Deposit Accounts Service charges on deposit accounts are earned on depository accounts for consumer and commercial account holders and include fees for account and overdraft services. Account services include fees for event-driven services and periodic account maintenance activities. The obligation for event-driven services is satisfied at the time of the event when service is delivered and revenue recognized as earned. Obligation for maintenance activities is satisfied over the course of each month and revenue recognized at month end. Obligation for overdraft services is satisfied at the time of the overdraft and revenue recognized as earned. Loans Acquired with Deteriorated Credit Quality Acquired loans with evidence of credit deterioration since their origination as of the date of the acquisition are recorded at their initial fair value. Credit deterioration is determined based on the probability of collection of all contractually required principal and interest paym ents. The historical allowance for loan and lease losses related to the acquired loans is not carried over to the Company. The determination of credit quality deterioration as of the purchase date may include parameters such as past due and non-accrual s tatus, commercial risk ratings, cash flow projections, type of loan and collateral, collateral value and recent loan-to-value ratios or appraised values. For loans acquired with evidence of credit deterioration, the Company determines at the acquisition d ate the excess of the loan’s contractually required payments over all cash flows expected to be collected as an amount that should not be accreted into interest income (nonaccretable difference). The remaining amount, representing the difference in the exp ected cash flows of acquired loans and the initial investment in the acquired loans, is accreted into interest income over the remaining life of the loan or pool of loans (accretable yield). Subsequent to the purchase date, increases in expected cash flows over those expected at the purchase date are recognized prospectively as interest income over the remaining life of the loan as an adjustment to the accretable yield. The present value of any decreases in expected cash flows after the purchase date is re cognized as an impairment through addition to the valuation allowance. Adopted Accounting Pronouncements The FASB issued Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) , in May 2014 that provides accounting guidance for all revenue arising from contracts with customers and affects all entities that enter into contracts to provide goods or services to customers. The guidance also provides for a model for the measurement and recognition of gains and losses on the sale of certai n nonfinancial assets, such as property and equipment, including real estate. For financial reporting purposes, the standard allows for either full retrospective adoption, meaning the standard is applied to all of the periods presented, or modified retrosp ective adoption, meaning the standard is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the standard recognized at the date of initial application. The Company’s revenue is com prised of net interest income and non-interest income. The guidance does not apply to revenue associated with financial instruments, net interest income, mortgage origination and servicing activities, and gains and losses from securities. Accordingly, the majority of the Company’s revenues are not be affected. The following revenue streams were identified to be in scope of ASC 606: 1) wealth management income; 2) insurance agency commissions; and 3) service charges on deposit accounts. The Company adopted t he standard on January 1, 2018. The Company’s accounting policies and revenue recognition principles did not change materially as the principles of ASC 606 are largely consistent with the current revenue recognition practices. The FASB issued Update No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income , in February 2018. The guidance permits entities to reclassify from accumulated other comprehensive income (“OCI”) to retained earnings stranded income tax effects resulting from the Tax Cuts and Jobs Act enacted in December 2017. The Company made the election to adopt this guidance during the first quarter of 2018 and reclassified $ 1.5 million of strand ed income tax effects from OCI to retained earnings. The Company made the adjustment between OCI and retained earnings in the Condensed Consolidated Statements of Changes in Stockholders’ Equity as of the beginning of the current reporting period. The FAS B issued Update No. 2016-01, Financial Instruments – (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities” , in January 2016. This guidance amends the presentation and accounting for certain financial instruments, including li abilities measured at fair value under fair value option and equity investments. The guidance also updates fair value presentation and disclosure requirements for financial instruments measured at amortized cost. The Company adopted the guidance in the fir st quarter 2018 with no impact to retained earnings or other comprehensive income. The Company has no investments in marketable equity securities classified as available-for-sale accounted for at fair value. The Company’s marketable equity securities that do not have determinable fair values are measured at cost less any impairment. The Company’s existing accounting policy is similar to measurement alternative provided by the guidance, except the carrying value is adjusted through earnings for subsequent ob servable transactions in the same or similar investment. For purposes of disclosing fair values of financial instruments carried at amortized cost, we determined the fair values based on “exit price” as required by the guidance. Pending Accounting Pronouncements The FASB issued Update No. 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities , in March 2017. This guidance is intended to eliminate the current diversity i n practice with respect to the amortization period for certain purchased callable debt securities held at a premium. Under current generally accepted accounting principles (GAAP), entities generally amortize the premium as an adjustment of yield over the c ontractual life. As a result, upon the exercise of a call on a callable debt security held at a premium, the unamortized premium is recorded as a loss in earnings. The amendments in this update shorten the amortization period for such callable debt securit ies held at a premium requiring the premium to be amortized to the earliest call date. This guidance is effective for a public business entity that is a U.S. Securities and Exchange Commission (SEC) filer for its fiscal years, and interim periods within th ose fiscal years, beginning after December 15, 2019. The adoption of this standard is not expected to have a material impact on the Company’s financial position, results of operations or cash flows. The FASB issued Update No. 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment , in January 2017. The objective of this guidance is to simplify an entity’s required test for impairment of goodwill by eliminating Step 2 from the goodwill impairment test. In Step 2 an entity measured a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. In computing the implied fair value of goodwill, an entity had to determine the fair value at the impai rment date of its assets and liabilities, including any unrecognized assets and liabilities, following a procedure that would be required in determining the fair value of assets acquired and liabilities assumed in a business combination. Under this Update, an entity should perform its annual or quarterly goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount and record an impairment charge for the excess of the carrying amount over the reporting unit’s fair value . The loss recognized should not exceed the total amount of goodwill allocated to the reporting unit and the entity must consider the income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodw ill impairment loss, if applicable. This guidance is effective for a public business entity that is an SEC filer for its annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. The adoption of this standard is not expected to have a material impact on the Company’s financial position, results of operations or cash flows. The FASB issued Update No. 2016-13, Current Expected Credit Losses (CECL) , in June 2016. This guidance changes the impairment model for most financial assets measured at amortized cost and certain other instruments. Entities will be required to use an expected loss model, replacing the incurred loss model that is currently in use. Under the new guidance, an entity will measure all expected cred it losses for financial instruments held at the reporting date based on historical experience, current condition and reasonable and supportable forecasts. This will result in earlier recognition of loss allowances in most instances. Credit losses related to available-for-sale debt securities (regardless of whether the impairment is considered to be other-than-temporary) will be measured in a manner similar to the present, except that such losses will be recorded as allowances rather than as reductions in t he amortized cost of the related securities. With respect to trade and other receivables, loans, held-to-maturity debt securities, net investments in leases and off-balance-sheet credit exposures, the guidance requires that an entity estimate its lifetime expected credit loss and record an allowance resulting in the net amount expected to be collected to be reflected as the financial asset. Entities are also required to provide significantly more disclosures, including information used to track credit qual ity by year of origination for most financing receivables. This guidance is effective for public business entities for the first interim or annual period beginning after December 15, 2019. The standard’s provisions will be applied as a cumulative-effect ad justment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. Early adoption by public business entities is permitted for the first interim or annual period beginning after December 15, 2018. The Compan y is assessing this guidance to determine its impact on the Company’s financial position, results of operations and cash flows. The FASB issued Update No. 2016-02 , Leases , in February 2016. From the lessee’s perspective, the new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as ei ther finance or operating, with classification affecting the pattern of expense recognition in the income statement for lessees. The guidance also eliminates the current real estate-specific provision and changes the guidance on sale-leaseback transactions , initial direct costs and lease executory costs. With respect to lessors, the guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. All entities will classify leases to determine how to recognize leas e-related revenue and expense. In applying this guidance entities will also need to determine whether an arrangement contains a lease or service agreement. Disclosures are required by lessees and lessors to meet the objective of enabling users of financial s statements to assess the amount, timing, and uncertainty of cash flows arising from leases. For public entities, this guidance is effective for the first interim or annual period beginning after December 15, 2018. Early adoption is permitted. Entities ar e required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. The Company is assessing this guidance to determine its impact on the Company’ s financial position, results of operations and cash flows.

ACQUISITION OF WASHINGTONFIRST

ACQUISITION OF WASHINGTONFIRST BANKSHARES INC	3 Months Ended
	Mar. 31, 2018
Acqusition of WashingtonFirst Bankshares Inc. [Abstract]
Business Combination Disclosure	NOTE 2 - ACQUISITION OF WASHINGTONFIRST BANKSHARES, INC. On January 1, 2018 (“Acquisition Date”), the Company completed its acquisition of WashingtonFirst Bankshares, Inc. (“WashingtonFirst”) in a transaction valued at approximately $447 million in the aggregate, based on the Company’s closing market price of $ 39.02 on December 29, 2017. The Company issued an aggregate of 11,446,197 shares of the Company’s common stock in the transaction. At the effective date of the acquisition, Sandy Spr ing shareholders owned approximately 67.7 % and WashingtonFirst’s shareholders owned approximately 32.3 % of the combined company. As of the Acquisition Date, WashingtonFirst was merged into the Company and WashingtonFirst’s wholly-owned subsidiary, Washingt onFirst Bank, was merged with and into Sandy Spring Bank. WashingtonFirst, headquartered in Reston, Virginia, had 19 community banking offices throughout the Washington D.C. metropolitan region and more than $2.1 billion in assets as of December 31, 2017. In addition, WashingtonFirst provided wealth management services through its subsidiary, 1st Portfolio Wealth Advisors, and mortgage banking services through the bank’s subsidiary, WashingtonFirst Mortgage Corporation. The acquisition of WashingtonFirs t is being accounted for as a business combination using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed, and consideration paid are recorded at estimated fair values on the Acquisition Date. The provisional amou nt of goodwill recognized was approximately $257 million. The estimated fair values of the acquired assets and assumed liabilities will be subject to refinement as additional information relative to closing date fair values becomes available. Any subsequen t adjustments to the fair values of acquired assets and liabilities assumed, identifiable intangible assets, or other purchase accounting adjustments will result in adjustments to goodwill within the first 12 months following the closing date of acquisitio n. The consideration paid for WashingtonFirst's common equity and the provisional fair values of acquired identifiable assets and liabilities assumed as of the Acquisition Date were as follows: (In thousands) January 1, 2018 Purchase Price: Fair value of common shares issued (11,446,197 shares), $ 446,640 based on Sandy Spring's share price of $39.02 Cash for fractional shares 10 Total purchase price $ 446,650 Identifiable assets: Cash and cash equivalents $ 32,497 Residential mortgage loans held for sale 25,789 Investment securities 302,321 Loans 1,683,683 Premises and equipment 4,602 Other Real Estate Owned 497 Accrued Interest Receivable 6,648 Other Intangible assets 11,370 Other Assets 33,764 Total identifiable assets $ 2,101,171 Identifiable liabilities: Deposits $ 1,610,327 Borrowings 283,808 Other Liabilities 17,525 Total identifiable liabilities $ 1,911,660 Provisional fair value of net assets acquired including identifiable intangible assets 189,511 Provisional resulting goodwill $ 257,139

INVESTMENTS

INVESTMENTS	3 Months Ended
	Mar. 31, 2018
Investments [Abstract]
INVESTMENTS	Note 3 – Investments Investments available-for-sale The amortized cost and estimated fair values of investments available-for-sale at the dates indicated are presented in the following table: March 31, 2018 December 31, 2017 Gross Gross Estimated Gross Gross Estimated Amortized Unrealized Unrealized Fair Amortized Unrealized Unrealized Fair (In thousands) Cost Gains Losses Value Cost Gains Losses Value U.S. government agencies $ 213,734 $ 1 $ (5,431) $ 208,304 $ 109,349 $ - $ (2,781) $ 106,568 State and municipal 328,324 3,918 (1,696) 330,546 306,109 6,313 (169) 312,253 Mortgage-backed 436,797 920 (9,573) 428,144 302,664 1,585 (4,209) 300,040 Corporate debt 9,100 252 - 9,352 9,100 332 - 9,432 Trust preferred 310 - - 310 931 71 - 1,002 Total debt securities 988,265 5,091 (16,700) 976,656 728,153 8,301 (7,159) 729,295 Marketable equity securities 568 - - 568 212 - - 212 Total investments available-for-sale $ 988,833 $ 5,091 $ (16,700) $ 977,224 $ 728,365 $ 8,301 $ (7,159) $ 729,507 Any unrealized losses in the U.S. government agencies, state and municipal, mortgage-backed or corporate debt investment securities at March 31, 2018 are not the result of credit related events but due to changes in interest rates. These declines in fair market value are considered temporary in na ture and are expected to recover over time as these securities approach maturity. The mortgage-backed securities portfolio at March 31, 2018 is composed entirely of either the most senior tranches of GNMA, F NMA or FHLMC collaterali zed mortgage obligations ($155.0 million), or GNMA, FNMA or FHLMC mo rtgage-backed securities ($273.1 million). The Company does not intend to sell these securities and has sufficient liquidity to hold these securities for an adequa te period of time to allow for any anticipated recovery in fair value. During the first quarter of 2018, the Company sold the pooled trust preferred security for an insignificant gain. This security had incurred credit related other-than-temporary impai rment which was recognized in periods prior to 2017. Gross unrealized losses and fair value by length of time that the individual available-for-sale securities have been in an unrealized loss position at the dates indicated are presented in the following table: March 31, 2018 Continuous Unrealized Losses Existing for: Number Total of Less than More than Unrealized (Dollars in thousands) Securities Fair Value 12 months 12 months Losses U.S. government agencies 57 $ 206,828 $ 2,208 $ 3,223 $ 5,431 State and municipal 116 109,344 1,652 44 1,696 Mortgage-backed 139 393,630 3,478 6,095 9,573 Total 312 $ 709,802 $ 7,338 $ 9,362 $ 16,700 December 31, 2017 Continuous Unrealized Losses Existing for: Number Total of Less than More than Unrealized (Dollars in thousands) Securities Fair Value 12 months 12 months Losses U.S. government agencies 13 $ 106,568 $ 545 $ 2,236 $ 2,781 State and municipal 20 18,228 107 62 169 Mortgage-backed 46 221,621 402 3,807 4,209 Total 79 $ 346,417 $ 1,054 $ 6,105 $ 7,159 The amortized cost and estimated fair values of debt securities available-for-sale by contractual maturity at the dates indicated are provided in the following table. The Company has allocated mortgage-backed securities into the four maturity groupings reflected in the following table using the expected av erage life of the individual securities based on statistics provided by independent third party industry sources. Expected maturities will differ from contractual maturities as borrowers may have the right to prepay obligations with o r without prepayment penalties. March 31, 2018 December 31, 2017 Estimated Estimated Amortized Fair Amortized Fair (In thousands) Cost Value Cost Value Due in one year or less $ 40,224 $ 40,564 $ 12,789 $ 12,889 Due after one year through five years 265,558 267,383 180,109 184,264 Due after five years through ten years 278,570 273,027 228,484 227,688 Due after ten years 403,913 395,682 306,771 304,454 Total debt securities available for sale $ 988,265 $ 976,656 $ 728,153 $ 729,295 At March 31, 2018 and December 31, 2017 , investments available-for-sale with a book value of $649 . 3 million and $431.7 million, respectively, were pledged as collateral for certain government deposits and for other purposes as required or permitted by law. The outstanding balance of no single issuer, except for U.S. Agencies securities, exceeded ten percent of stockholders' equity at March 31, 2018 and December 31, 2017 . Equity securities Other equity securities at the dates indicated are presented in the following table: (In thousands) March 31, 2018 December 31, 2017 Federal Reserve Bank stock $ 13,349 $ 8,398 Federal Home Loan Bank of Atlanta stock 49,766 37,120 Total equity securities $ 63,115 $ 45,518

LOANS AND LEASES

LOANS AND LEASES	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
LOANS AND LEASES	Note 4 – L OANS Outstanding loan balances at March 31, 2018 and December 31, 2017 are net of unearned income including net deferred loan costs of $1.2 million and $1.8 million, respectively. The loan portfolio segment balances at the dates indicated are presented in the following table: (In thousands) March 31, 2018 December 31, 2017 Residential real estate: Residential mortgage $ 992,287 $ 921,435 Residential construction 215,445 176,687 Commercial real estate: Commercial owner occupied real estate 1,174,739 857,196 Commercial investor real estate 1,928,439 1,112,710 Commercial AD&C 564,871 292,443 Commercial business 652,797 497,948 Consumer 532,973 455,829 Total loans $ 6,061,551 $ 4,314,248 The fair value of the financial assets acquired in the WashingtonFirst transaction included loans receivable with a gross amortized cost basis of $1.7 billion. The table below illustrates the fair value adjustments made to the amortized cost basis in order to present a fair value of the loans acquired. Interest and credit fair value adjustments related to loans acquired without evidence of credit quality deterioration are accreted or amortized into interest income over the remaining expected lives of t he loans. The specific credit adjustment on acquired credit impaired loans includes accretable and non-accretable components. Of the $7.3 million specific credit mark on acquired credit impaired loans, approximately $2.5 million is estimated to be an accre table adjustment recognized over the remaining expected lives of the loans and $4.7 million non-accretable adjustment. In conjunction with the WashingtonFirst Bank merger, the acquired loan portfolio was accounted for at fair value as follows: (Dollars in thousands) January 1, 2018 Gross amortized cost basis at January 1, 2018 $ 1,697,760 Interest rate fair value adjustment 15,591 Credit fair value adjustment on pools of homogeneous loans (22,421) Credit fair value adjustment on purchased credit impaired loans (7,247) Fair value of acquired loan portfolio at January 1, 2018 $ 1,683,683 The following table presents the acquired credit impaired loans receivable as of the Acquisition Date: (Dollars in thousands) January 1, 2018 Contractual principal and interest at acquisition $ 28,502 Contractual cash flows not expected to be collected (Nonaccretable yield) (9,027) Expected cash flows at acquisition 19,475 Interest component of expected cash flows (Accretable yield) (2,511) Fair value of purchased credit impaired loans $ 16,964 The outstanding balance of purchased credit impaired loans receivable totaled $24.2 million and $23.1 million at January 1, 2018 and March 31, 2018, respectively. The fair value of purchased credit impaired loans was $17.3 million at March 31, 2018. Activity for the accretable yield since the Acquisition Date was as follows: Three Months Ended March 31, 2018 (Dollars in thousands) Accretable yield at the beginning of the period $ - Addition of accretable yield due to acquisitions 2,511 Accretion into interest income (341) Accretable yield at the end of the period. $ 2,170

CREDIT QUALITY ASSESSMENT

CREDIT QUALITY ASSESSMENT	3 Months Ended
	Mar. 31, 2018
Credit Quality Assessment [Abstract]
CREDIT QUALITY ASSESSMENT	Note 5 – CREDIT QUALITY ASSESSMENT Allowance for Loan Losses Summary information on t he allowance for loan loss activity for the period indicated is provided in the following table: Three Months Ended March 31, (In thousands) 2018 2017 Balance at beginning of year $ 45,257 $ 44,067 Provision for loan losses 1,997 194 Loan charge-offs (477) (482) Loan recoveries 154 82 Net charge-offs (323) (400) Balance at period end $ 46,931 $ 43,861 The following tables provide information on the activity in t he allowance for loan losses by the respective loan portfolio segment for the period indicated: For the Three Months Ended March 31, 2018 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Commercial Owner Residential Residential (Dollars in thousands) Business AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Balance at beginning of year $ 8,711 $ 3,501 $ 14,970 $ 7,178 $ 2,383 $ 7,268 $ 1,246 $ 45,257 Provision (credit) 415 254 1,102 (172) 226 (190) 362 1,997 Charge-offs (331) - - - (146) - - (477) Recoveries 9 62 8 - 47 22 6 154 Net recoveries (charge-offs) (322) 62 8 - (99) 22 6 (323) Balance at end of period $ 8,804 $ 3,817 $ 16,080 $ 7,006 $ 2,510 $ 7,100 $ 1,614 $ 46,931 Total loans and leases $ 652,797 $ 564,871 $ 1,928,439 $ 1,174,739 $ 532,973 $ 992,287 $ 215,445 $ 6,061,551 Allowance for loans losses to total loans ratio 1.35% 0.68% 0.83% 0.60% 0.47% 0.72% 0.75% 0.77% Balance of loans specifically evaluated for impairment $ 7,944 $ 136 $ 5,813 $ 4,009 $ N/A $ 2,891 $ - $ 20,793 Allowance for loans specifically evaluated for impairment $ 3,096 $ - $ 1,255 $ 128 $ N/A $ - $ - $ 4,479 Specific allowance to specific loans ratio 38.97% - 21.59% 3.19% N/A - - 21.54% Balance of loans collectively evaluated $ 644,853 $ 564,735 $ 1,922,626 $ 1,170,730 $ 532,973 $ 989,396 $ 215,445 $ 6,040,758 Allowance for loans collectively evaluated $ 5,708 $ 3,817 $ 14,825 $ 6,878 $ 2,510 $ 7,100 $ 1,614 $ 42,452 Collective allowance to collective loans ratio 0.89% 0.68% 0.77% 0.59% 0.47% 0.72% 0.75% 0.70% For the Year Ended December 31,2017 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Commercial Owner Residential Residential (Dollars in thousands) Business AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Balance at beginning of year $ 7,539 $ 4,652 $ 12,939 $ 7,885 $ 2,828 $ 7,261 $ 963 $ 44,067 Provision (credit) 2,616 (1,254) 1,930 (459) (57) (56) 257 2,977 Charge-offs (1,538) - - (248) (693) (87) - (2,566) Recoveries 94 103 101 - 305 150 26 779 Net recoveries (charge-offs) (1,444) 103 101 (248) (388) 63 26 (1,787) Balance at end of period $ 8,711 $ 3,501 $ 14,970 $ 7,178 $ 2,383 $ 7,268 $ 1,246 $ 45,257 Total loans and leases $ 497,948 $ 292,443 $ 1,112,710 $ 857,196 $ 455,829 $ 921,435 $ 176,687 $ 4,314,248 Allowance for loan losses to total loans ratio 1.75% 1.20% 1.35% 0.84% 0.52% 0.79% 0.71% 1.05% Balance of loans specifically evaluated for impairment $ 8,105 $ 136 $ 5,575 $ 4,078 $ N/A $ 2,915 $ - $ 20,809 Allowance for loans specifically evaluated for impairment $ 3,220 $ - $ 663 $ 131 $ N/A $ - $ - $ 4,014 Specific allowance to specific loans ratio 39.73% - 11.89% 3.21% N/A - - 19.29% Balance of loans collectively evaluated $ 489,843 $ 292,307 $ 1,107,135 $ 853,118 $ 455,829 $ 918,520 $ 176,687 $ 4,293,439 Allowance for loans collectively evaluated $ 5,491 $ 3,501 $ 14,307 $ 7,047 $ 2,383 $ 7,268 $ 1,246 $ 41,243 Collective allowance to collective loans ratio 1.12% 1.20% 1.29% 0.83% 0.52% 0.79% 0.71% 0.96% The following table provides summary information regarding impaired loans at the dates indicated and for the periods then ended: (In thousands) March 31, 2018 December 31, 2017 Impaired loans with a specific allowance $ 11,446 $ 11,693 Impaired loans without a specific allowance 9,347 9,116 Total impaired loans $ 20,793 $ 20,809 Allowance for loan losses related to impaired loans $ 4,479 $ 4,014 Allowance for loan losses related to loans collectively evaluated 42,452 41,243 Total allowance for loan losses $ 46,931 $ 45,257 Average impaired loans for the period $ 20,802 $ 23,179 Contractual interest income due on impaired loans during the period $ 649 $ 2,314 Interest income on impaired loans recognized on a cash basis $ 111 $ 754 Interest income on impaired loans recognized on an accrual basis $ 46 $ 169 The following tables present the recorded investment with respect to impaired loans, the associated allowance by the applicable portfolio segment and the principal balance of the impaired loans prior to amounts charged-off at the dates indicated: March 31, 2018 Commercial Real Estate Total Recorded Commercial All Investment in Commercial Commercial Owner Other Impaired (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Loans Impaired loans with a specific allowance Non-accruing $ 4,534 $ - $ 5,158 $ - $ - $ 9,692 Restructured accruing 863 - - - - 863 Restructured non-accruing 111 - - 780 - 891 Balance $ 5,508 $ - $ 5,158 $ 780 $ - $ 11,446 Allowance $ 3,096 $ - $ 1,255 $ 128 $ - $ 4,479 Impaired loans without a specific allowance Non-accruing $ 317 $ - $ 655 $ 1,292 $ - $ 2,264 Restructured accruing 447 - - 485 883 1,815 Restructured non-accruing 1,672 136 - 1,452 2,008 5,268 Balance $ 2,436 $ 136 $ 655 $ 3,229 $ 2,891 $ 9,347 Total impaired loans Non-accruing $ 4,851 $ - $ 5,813 $ 1,292 $ - $ 11,956 Restructured accruing 1,310 - - 485 883 2,678 Restructured non-accruing 1,783 136 - 2,232 2,008 6,159 Balance $ 7,944 $ 136 $ 5,813 $ 4,009 $ 2,891 $ 20,793 Unpaid principal balance in total impaired loans $ 11,003 $ 1,248 $ 10,401 $ 6,299 $ 3,667 $ 32,618 March 31, 2018 Commercial Real Estate Total Recorded Commercial All Investment in Commercial Commercial Owner Other Impaired (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Loans Average impaired loans for the period $ 8,025 $ 136 $ 5,694 $ 4,044 $ 2,903 $ 20,802 Contractual interest income due on impaired loans during the period $ 256 $ 89 $ 156 $ 105 $ 43 Interest income on impaired loans recognized on a cash basis $ 51 $ - $ 4 $ 44 $ 12 Interest income on impaired loans recognized on an accrual basis $ 27 $ - $ - $ 6 $ 13 December 31, 2017 Commercial Real Estate Total Recorded Commercial All Investment in Commercial Commercial Owner Other Impaired (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Loans Impaired loans with a specific allowance Non-accruing $ 4,516 $ - $ 5,157 $ - $ - $ 9,673 Restructured accruing 1,129 - - - - 1,129 Restructured non-accruing 108 - - 783 - 891 Balance $ 5,753 $ - $ 5,157 $ 783 $ - $ 11,693 Allowance $ 3,220 $ - $ 663 $ 131 $ - $ 4,014 Impaired loans without a specific allowance Non-accruing $ 391 $ - $ 418 $ 1,318 $ - $ 2,127 Restructured accruing 273 - - 496 890 1,659 Restructured non-accruing 1,688 136 - 1,481 2,025 5,330 Balance $ 2,352 $ 136 $ 418 $ 3,295 $ 2,915 $ 9,116 Total impaired loans Non-accruing $ 4,907 $ - $ 5,575 $ 1,318 $ - $ 11,800 Restructured accruing 1,402 - - 496 890 2,788 Restructured non-accruing 1,796 136 - 2,264 2,025 6,221 Balance $ 8,105 $ 136 $ 5,575 $ 4,078 $ 2,915 $ 20,809 Unpaid principal balance in total impaired loans $ 11,263 $ 1,248 $ 10,166 $ 6,331 $ 3,681 $ 32,689 December 31, 2017 Commercial Real Estate Total Recorded Commercial All Investment in Commercial Commercial Owner Other Impaired (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Loans Average impaired loans for the period $ 7,903 $ 137 $ 6,835 $ 5,336 $ 2,968 $ 23,179 Contractual interest income due on impaired loans during the period $ 828 $ 333 $ 669 $ 400 $ 84 Interest income on impaired loans recognized on a cash basis $ 204 $ - $ 24 $ 394 $ 132 Interest income on impaired loans recognized on an accrual basis $ 111 $ - $ - $ 26 $ 32 Credit Quality The following tables provide information on the credit quality of the loan portfolio by segment at the dates indicated: March 31, 2018 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Owner Residential Residential (In thousands) Commercial AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Non-performing loans and assets: Non-accrual loans $ 6,634 $ 136 $ 5,813 $ 3,524 $ 3,244 $ 7,063 $ 174 $ 26,588 Loans 90 days past due - - - - 126 - - 126 Restructured loans 1,310 - - 485 - 883 - 2,678 Total non-performing loans 7,944 136 5,813 4,009 3,370 7,946 174 29,392 Other real estate owned - 365 497 400 - 1,499 - 2,761 Total non-performing assets $ 7,944 $ 501 $ 6,310 $ 4,409 $ 3,370 $ 9,445 $ 174 $ 32,153 December 31, 2017 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Owner Residential Residential (In thousands) Commercial AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Non-performing loans and assets: Non-accrual loans $ 6,703 $ 136 $ 5,575 $ 3,582 $ 2,967 $ 7,196 $ 177 $ 26,336 Loans 90 days past due - - - - - 225 - 225 Restructured loans 1,402 - - 496 - 890 - 2,788 Total non-performing loans 8,105 136 5,575 4,078 2,967 8,311 177 29,349 Other real estate owned 39 365 - 400 - 1,449 - 2,253 Total non-performing assets $ 8,144 $ 501 $ 5,575 $ 4,478 $ 2,967 $ 9,760 $ 177 $ 31,602 March 31, 2018 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Owner Residential Residential (In thousands) Commercial AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Past due loans 31-60 days $ 3,834 $ - $ 727 $ 605 $ 2,061 $ 5,648 $ 587 $ 13,462 61-90 days 537 - 249 773 965 3,849 - 6,373 > 90 days - - - - 126 - - 126 Total past due 4,371 - 976 1,378 3,152 9,497 587 19,961 Non-accrual loans 6,634 136 5,813 3,524 3,244 7,063 174 26,588 Loans acquired with deteriorated credit quality 2,268 - 17,573 2,337 1,383 12 - 23,573 Current loans 639,524 564,735 1,904,077 1,167,500 525,194 975,715 214,684 5,991,429 Total loans $ 652,797 $ 564,871 $ 1,928,439 $ 1,174,739 $ 532,973 $ 992,287 $ 215,445 $ 6,061,551 December 31, 2017 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Owner Residential Residential (In thousands) Commercial AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Past due loans 31-60 days $ 587 $ - $ 775 $ 414 $ 2,107 $ 6,100 $ - $ 9,983 61-90 days - - - - 106 3,103 - 3,209 > 90 days - - - - - 225 - 225 Total past due 587 - 775 414 2,213 9,428 - 13,417 Non-accrual loans 6,703 136 5,575 3,582 2,967 7,196 177 26,336 Current loans 490,658 292,307 1,106,360 853,200 450,649 904,811 176,510 4,274,495 Total loans $ 497,948 $ 292,443 $ 1,112,710 $ 857,196 $ 455,829 $ 921,435 $ 176,687 $ 4,314,248 The following tables provide information by credit risk rating indicators for each segment of the commercial loan portfolio at the dates indicated: March 31, 2018 Commercial Real Estate Commercial Commercial Commercial Owner (In thousands) Commercial AD&C Investor R/E Occupied R/E Total Pass $ 635,564 $ 564,433 $ 1,901,769 $ 1,159,886 $ 4,261,652 Special Mention 2,492 302 3,576 5,262 11,632 Substandard 14,741 136 23,094 9,591 47,562 Doubtful - - - - - Total $ 652,797 $ 564,871 $ 1,928,439 $ 1,174,739 $ 4,320,846 December 31, 2017 Commercial Real Estate Commercial Commercial Commercial Owner (In thousands) Commercial AD&C Investor R/E Occupied R/E Total Pass $ 482,924 $ 292,307 $ 1,103,480 $ 845,102 $ 2,723,813 Special Mention 2,443 - 3,517 5,505 11,465 Substandard 12,581 136 5,713 6,589 25,019 Doubtful - - - - - Total $ 497,948 $ 292,443 $ 1,112,710 $ 857,196 $ 2,760,297 Homogeneous loan pools do not have individual loans subjected to internal risk ratings therefore, the credit indicator applied to these pools is based on their delinquency status. The following tables provide information by credit risk rating indicators for those remaining segments of the loan portfolio at the dates indicated: March 31, 2018 Residential Real Estate Residential Residential (In thousands) Consumer Mortgage Construction Total Performing $ 529,603 $ 984,341 $ 215,271 $ 1,729,215 Non-performing: 90 days past due 126 - - 126 Non-accruing 3,244 7,063 174 10,481 Restructured loans - 883 - 883 Total $ 532,973 $ 992,287 $ 215,445 $ 1,740,705 December 31, 2017 Residential Real Estate Residential Residential (In thousands) Consumer Mortgage Construction Total Performing $ 452,862 $ 913,124 $ 176,510 $ 1,542,496 Non-performing: 90 days past due - 225 - 225 Non-accruing 2,967 7,196 177 10,340 Restructured loans - 890 - 890 Total $ 455,829 $ 921,435 $ 176,687 $ 1,553,951 During the three months ended March 31, 2018 , the Company restructured an insignificant amount of loans that were designated as troubled debt restructurings . No modifications resulted in the redu ction of the principal in the associated loan balances. Restructured loans are subject to periodic credit reviews to determine the necessity and adequacy of a specific loan loss allowance based on the collectability of the recorded investment in the restructured loan. Loans r estructured during 2018 did not have significant specific reserves. For the year ended December 31, 2017 , the Company restructured $2.1 million in loans. Modifications consisted principally of interest rate concessions and no modifications resulted in the reduction of the recorded investment in the associated loan balances. Loans restructured during 2017 had specific reserves of $0.2 million at December 31, 2017 . The commitments to lend additional funds on loans that have been restructured at March 31, 2018 and December 31, 2017 were not significant. The following table provides the amounts of the restructured loans at the date of restructuring for specific segments of the loan portfolio during the period indicated: For the Three Months Ended March 31, 2018 Commercial Real Estate Commercial All Commercial Commercial Owner Other (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Total Troubled debt restructurings Restructured accruing $ - $ - $ - $ - $ - $ - Restructured non-accruing 14 - - - - 14 Balance $ 14 $ - $ - $ - $ - $ 14 Specific allowance $ 14 $ - $ - $ - $ - $ 14 Restructured and subsequently defaulted $ - $ - $ - $ - $ - $ - For the Year Ended December 31, 2017 Commercial Real Estate Commercial All Commercial Commercial Owner Other (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Total Troubled debt restructurings Restructured accruing $ 492 $ - $ - $ - $ - $ 492 Restructured non-accruing 1,019 - - 540 - 1,559 Balance $ 1,511 $ - $ - $ 540 $ - $ 2,051 Specific allowance $ 247 $ - $ - $ - $ - $ 247 Restructured and subsequently defaulted $ - $ - $ - $ - $ - $ - Other Real Estate Owned Other real estate owned totaled $2.8 million and $2.3 million at March 31, 2018 and December 31, 2017 , respectively . There were no consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process as of March 31, 2018.

GOODWILL AND OTHER INTANGIBLE A

GOODWILL AND OTHER INTANGIBLE ASSETS	3 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLE ASSETS	Note 6 – Goodwill and Other Intangible Assets The gross carrying amounts and accumulated amortization of intangible assets and goodwill are presented at the dates indicated in the following table: March 31, 2018 Weighted December 31, 2017 Weighted Gross Net Average Gross Net Average Carrying Accumulated Carrying Remaining Carrying Accumulated Carrying Remaining (Dollars in thousands) Amount Amortization Amount Life Amount Amortization Amount Life Amortizing intangible assets: Core deposit intangibles $ 10,678 $ (485) $ 10,193 9.8 years $ - $ - $ - - Other identifiable intangibles 1,271 (56) 1,215 11.2 years 786 (206) 580 13.1 years Total amortizing intangible assets $ 11,949 $ (541) $ 11,408 $ 786 $ (206) $ 580 Goodwill $ 342,907 $ 342,907 $ 85,768 $ 85,768 During 2018, the acquisition of WashingtonFirst Bankshares and subsidiaries resulted in the addition of $0.7 million in other intangible assets. The following table presents the estimated future amortization expense for amortizing intangible assets within the years ending December 31: (In thousands) Amount 2018 $ 1,621 2019 1,944 2020 1,720 2021 1,507 Thereafter 4,616 Total amortizing intangible assets $ 11,408 The amount of goodwill by reportable segment recognized in the WashingtonFirst acquisition is presented in the following table: Community Investment (Dollars in thousands) Banking Insurance Management Total Balance December 31, 2017 $ 69,991 $ 6,788 $ 8,989 $ 85,768 WashingtonFirst Acquisition 256,940 - 199 257,139 Balance March 31, 2018 $ 326,931 $ 6,788 $ 9,188 $ 342,907

DEPOSITS

DEPOSITS	3 Months Ended
	Mar. 31, 2018
Deposits [Abstract]
DEPOSITS	Note 7 – Deposits The following table presents the composition of deposits at the dates indicated: (In thousands) March 31, 2018 December 31, 2017 Noninterest-bearing deposits $ 1,767,523 $ 1,264,392 Interest-bearing deposits: Demand 750,899 658,716 Money market savings 1,544,580 1,030,432 Regular savings 357,601 321,171 Time deposits of less than $100,000 378,428 293,201 Time deposits of $100,000 or more 828,175 395,750 Total interest-bearing deposits 3,859,683 2,699,270 Total deposits $ 5,627,206 $ 3,963,662

SUBORDINATED DEBENTURES

SUBORDINATED DEBENTURES	3 Months Ended
	Mar. 31, 2018
Brokers and Dealers [Abstract]
SUBORDINATED DEBENTURES	Note 8 – SUBORDINATED DEBENTURES In conjunction with the acquisition, the Company assumed $25.0 million in non-callable subordinated debt and $10.3 million in callable junior subordinated debt securities. The associated purchase premiums at acquisition were $2.2 million and $0.1 million, respectively. The premiums are amortized over the contractual life of each obligation. The subordinated debt has a maturity of ten years, is due in full on October 15, 2025, is non-callable and currently bears a fixed i nterest rate of 6.00% per annum, payable quarterly, subject to a reset after 5 years (on October 5, 2020) at 3 month LIBOR plus 467 basis points. The entire amount of subordinated debt is considered Tier 2 capital under current regulatory guidelines. In 2 003, Alliance Bankshares Corporation, which was acquired by WashingtonFirst in 2012, issued $10.3 million of junior subordinated debt securities to Alliance Virginia Capital Trust I, of which Alliance Bankshares Corporation owned all of the common securiti es. The trust used the proceeds from the issuance of its underlying common securities and preferred securities, which were sold to third parties, to purchase the debt securities. These debt securities are the trust’s only assets and the interest payments from the debentures finance the distributions paid on the preferred securities. The obligations under the debt securities were assumed by the Company at the date of acquisition. The debt securities are due on June 30, 2033 and are callable at any time, wit hout penalty. The interest rate associated with the debt securities is three month LIBOR plus 3.15% subject to quarterly interest rate adjustments. The interest rate as of March 31, 2018 was 5.46%. Under the indenture governing the debt securities, the Com pany has the right to defer payments of interest for up to twenty consecutive quarterly periods. During any such extension period, distributions on the trust’s preferred securities will also be deferred, and the Company’s ability to pay dividends on its co mmon stock will be restricted. The trust’s preferred securities are mandatorily redeemable upon maturity of the debt securities, or upon earlier redemption as provided in the indenture. If the debt securities are redeemed prior to maturity, the redemption price will be the principal amount and any accrued but unpaid interest. The Company unconditionally guarantees payment of accrued and unpaid distributions required to be paid on the trust securities subject to certain exceptions, the redemption price with respect to any trust securities called for redemption and amounts due if the trust is liquidated or terminated. As of March 31, 2018, the Company was current on all interest payments. Under current regulatory guidelines the trust preferred securities are c onsidered to be Tier 1 capital. The following table provides information on subordinated debentures for the period indicated: As of, (In thousands) January 1, 2018 March 31, 2018 Subordinated debentures $ 25,000 $ 25,000 Add: Purchase accounting premium 2,158 2,125 Trust preferred securities 10,310 10,310 Add: Purchase accounting premium 96 95 Total subordinated debentures $ 37,564 $ 37,530

SHARE BASED COMPENSATION

SHARE BASED COMPENSATION	3 Months Ended
	Mar. 31, 2018
Share Based Compensation [Abstract]
SHARE BASED COMPENSATION	Note 9 – Share Based Compensation At March 31, 2018 , the Company had two share based compensation plans in existence, the 2005 Omnibus Stock Plan (“Omnibus Stock Plan”) and the 2015 Omnibus Incentive Plan (“Omnibus Incentive Plan”). The Omnibus Stock Plan expired during the second quarter of 2015 but has outstanding options that may still be exercised. The Omnibus Incentive Plan is described in the following paragraph. The Co mpany’s Omnibus Incentive Plan was approved on May 6, 2015 and provides for the granting of incentive stock options, non-qualifying stock options , stock appreci ation rights , restricted stock grants , restricted stock units and performance awards to selected employees on a periodic basis at the discretion of the board. The Omnibus Incentive Plan auth orizes the issuance of up to 1,5 00,000 shares of common stock, of which 1,288,144 are available for issuance at March 31, 2018 , has a term of ten years, and is administered by a committee of at least three directors appointed by the board of directors. Options granted under the plan have an exercise price which may not be less than 100% of the fair market value of the common stock on the date of the grant and must be exercised within seven to ten years from the date of grant. The exercise price of stock options must be paid for in full in cash or shares of common stock, or a combination of both. The board committee has the discretion when making a grant of stock options to impose restrictions on the shares to be purchased upo n the exercise of such options. T he Company generally issues authorized but previously unissued sh ares to satisfy option exercises. The fair values of all of the options granted for the periods indicated have been estimated using a bino mial option-pricing model. T he weighted-average assumptions for the periods shown are presented in the following tabl e: Three Months Ended March 31, 2018 2017 Dividend yield 2.64 % 2.45 % Weighted average expected volatility 39.13 % 40.27 % Weighted average risk-free interest rate 2.61 % 2.14 % Weighted average expected lives (in years) 5.61 5.67 Weighted average grant-date fair value $11.73 $13.42 The dividend yield is based on estimated future dividend yields. The risk-free rate for periods within the contractual term of the share option is based on the U.S. Treasury yield curve in effect at the time of the grant. Expected volatilities are generally based on historical volatilities. The expected term of share options granted is generally derived from historical experience. Compensation expense is recognized on a straight-line basis over the vesting period of the respective stock option or restricted stock grant. The Company recognized compensation expense of $0.5 million and $0.5 million for the three months ended March 31, 2018 and 2017 , respectively, related to the awards of stock option s and restricted stock grants. The intrinsic value of stock options exercised in the three months ended March 31, 2018 and 2017 was $0. 2 million and $0.4 million, respectively. The total of unrecognized compensation cost related to stock options was approximately $0. 3 million as of March 31, 2018 . That cost is expected to be recognized over a weighted average period of approximately 2. 4 years . The total of unrecognized compensation cost related to restric ted stock was approximately $5.1 million as of March 31, 2018 . That cost is expected to be recognized over a weighted average period of approximately 3.3 years . The fair value of the options vested during the three months ended March 31, 2018 and 2017 , was not significant. In the first quarter of 2018 , 16,212 stock options were granted, subject to a three year vesting schedule with one third of the options vesting on April 1 st of each year . The Company granted 36,003 shares of restricted stock in the first quarter of 2018 , of which 9,170 shares are subject to a three year vesting schedule with one third of the shares vesting each year and 26,833 shares subject to a five year vesting schedule with one fifth of the shares vesting each year. All of these restricted shares will vest on April 1 st of each year . A summary of share option activity for the period indicated is reflected in the following table: Weighted Number Weighted Average Aggregate of Average Contractual Intrinsic Common Exercise Remaining Value Shares Share Price Life (Years) (in thousands) Balance at January 1, 2018 87,300 $ 26.22 $ 1,160 Granted 16,212 $ 38.15 Exercised (12,353) $ 18.78 $ 249 Balance at March 31, 2018 91,159 $ 29.35 4.4 $ 904 Exercisable at March 31, 2018 44,462 $ 23.44 2.9 $ 904 Weighted average fair value of options granted during the year $ 11.73 A summary of the activity for the Company’s restricted stock for the period indicated is presented in the following table: Number Weighted of Average Common Grant-Date (In dollars, except share data): Shares Fair Value Restricted stock at January 1, 2018 189,035 $ 30.67 Granted 36,003 $ 38.15 Vested (1,514) $ 33.04 Restricted stock at March 31, 2018 223,524 $ 31.86

PENSION, PROFIT SHARING, AND OT

PENSION, PROFIT SHARING, AND OTHER EMPLOYEE BENEFIT PLANS	3 Months Ended
	Mar. 31, 2018
Pension, Profit Sharing, and Other Employee Benefit Plans [Abstract]
PENSION, PROFIT SHARING, AND OTHER EMPLOYEE BENEFIT PLANS	Note 10 – Pension, Profit Sharing, and Other Employee Benefit Plans Defined Benefit Pension Plan The Company has a qualified, noncontributory, defined benefit pension plan (the “Plan”). Benefits after January 1, 2005, are based on the benefit earned as of December 31, 2004, plus benefits earned in future years of service based on the employee’s compensation during each such year. All benefit accruals for employees were frozen as of December 31, 2007 based on past service and thus salary increas es and additional years of service after such date no longer affect the defined benefit provided by the plan although additional vesting may continue to occur. The Company's funding policy is to contribute amounts to the plan sufficient to meet the minim um funding requirements of the Employee Retirement Income Security Act of 1974 (“ERISA”), as amended. In addition, the Company contributes additional amounts as it deems appropriate based on benefits attributed to service prior to the date of the plan free ze. The Plan invests primarily in a diversified portfolio of managed fixed income and equity funds. The components of net periodic benefit cost for the periods indicated are presented in the following table: Three Months Ended March 31, (In thousands) 2018 2017 Interest cost on projected benefit obligation $ 385 $ 410 Expected return on plan assets (465) (496) Recognized net actuarial loss 250 295 Net periodic benefit cost $ 170 $ 209 Contributions The decision as to whether or not to make a plan contribution and the amount of any such contribution is dependent on a number of factors. Such factors include the investment performance of the plan assets in the current economy and, since the plan is currently frozen, the remaining investmen t horizon of the plan.

NET INCOME PER COMMON SHARE

NET INCOME PER COMMON SHARE	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
NET INCOME PER COMMON SHARE	Note 11 – Net Income per Common Share The calculation of net income per common share for the periods indicated is presented in the following table: Three Months Ended March 31, (Dollars and amounts in thousands, except per share data) 2018 2017 Net income $ 21,665 $ 15,112 Basic: Basic weighted average EPS shares 35,659 24,119 Basic net income per share $ 0.61 $ 0.63 Diluted: Basic weighted average EPS shares 35,659 24,119 Dilutive common stock equivalents 25 40 Dilutive EPS shares 35,684 24,159 Diluted net income per share $ 0.61 $ 0.63 Anti-dilutive shares 4 -

OTHER COMPREHENSIVE INCOME (LOS

OTHER COMPREHENSIVE INCOME (LOSS)	3 Months Ended
	Mar. 31, 2018
Other Comprehensive Income Loss [Abstract]
OTHER COMPREHENSIVE INCOME (LOSS)	NOTE 12 – ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Comprehensive income is defined as net income plus transactions and other occurrences that are the result of non-owner changes in equity. For condensed financial statements presented for the Company, non-owner changes in equity are comprised of unrealized gains or losses on available-for-sale debt securities and any minimum pension liability adjustments. The following table presents the activity in net accumulated other comprehensive income ( loss) and the components of the activity for the periods indicated: Unrealized Gains (Losses) on Investments Defined Benefit (In thousands) Available-for-Sale Pension Plan Total Balance at January 1, 2018 $ 687 $ (7,544) $ (6,857) Other comprehensive income before reclassification, net of tax (9,368) - (9,368) Reclassifications from accumulated other comprehensive income, net of tax (47) 131 84 Current period change in other comprehensive income, net of tax (9,415) 131 (9,284) Reclassification of tax effects from accumulated other comprehensive income 148 (1,625) (1,477) Balance at March 31, 2018 $ (8,580) $ (9,038) $ (17,618) Unrealized Gains (Losses) on Investments Defined Benefit (In thousands) Available-for-Sale Pension Plan Total Balance at January 1, 2017 $ 1,642 $ (8,256) $ (6,614) Other comprehensive income before reclassification, net of tax 904 - 904 Reclassifications from accumulated other comprehensive income, net of tax (2) 178 176 Current period change in other comprehensive income, net of tax 902 178 1,080 Balance at March 31, 2017 $ 2,544 $ (8,078) $ (5,534) The following table provides the information on the reclassification adjustments out of accumulated other comprehensive income for the periods indicated: Three Months Ended March 31, (In thousands) 2018 2017 Unrealized gains/(losses) on investments available-for-sale Affected line item in the Statements of Income: Investment securities gains $ 63 $ 2 Income before taxes 63 2 Tax expense 16 - Net income $ 47 $ 2 Amortization of defined benefit pension plan items Affected line item in the Statements of Income: Recognized actuarial loss (1) $ (250) $ (295) Income before taxes (250) (295) Tax benefit (119) (117) Net loss $ (131) $ (178) (1) This amount is included in the computation of net periodic benefit cost, see Note 10 In the first quarter of 2018, the Company elected to make a one-time reclassification from accumulated other comprehensive income to retained earnings for the effects of re-measuring the deferred tax assets and liabilities originally recorded in other comprehensive income as a result of the change in the federal tax rate by the Tax Cut s and Jobs Act.

FINANCIAL INSTRUMENTS WITH OFF-

FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK AND DERIVATIVES	3 Months Ended
	Mar. 31, 2018
Financial Instruments With Off- Balance Sheet Risk and Derivatives [Abstract]
FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK AND DERIVATIVES	Note 13 – Financial Instruments with Off-balance Sheet Risk and Derivatives The Company has entered into interest rate swaps (“swaps”) to facilitate customer transactions and meet their financing needs. These swaps qualify as derivatives, but are not designated as hedging instruments. Interest rate swap contracts involve the risk of dealing with counterparties and their ability to meet contractual terms. When the fair value of a derivative instrument contract is positive, this generally indicates t hat the counterparty or customer owes the Company, and results in credit risk to the Company. When the fair value of a derivative instrument contract is negative, the Company owes the customer or counterparty and therefore, has no credit risk. The notiona l value of commercial loan swaps outstanding was $1 7 . 7 m illion with a fair value of $0.6 million a s of March 31, 2018 compared to $17 . 8 m illion with a fair value of $0 .7 million as of December 31, 2017 . The swap positions are offset to minimize the potent ial impact on the Company’s financial statements . Fair values of the swaps are carried as both gross assets and gross liabilities in the condensed consolidated statements of condition. The associated net gains and losses on the swaps are recorded in othe r non-interest income.

LITIGATION

LITIGATION	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
LITIGATION	Note 14 – Litigation The Company and its subsidiaries are subject in the ordinary course of business to various pending or threatened legal proceedings in which claims for monetary damages are asserted. After consultation with legal counsel, management does not anticipate that the ultimate liability, if any, arising out of these legal matters will have a material adverse effect on the Company's financial condition, operating results or liquidity.

FAIR VALUE

FAIR VALUE	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE	Note 15 – Fair Value Generally accepted accounting principles provide entities the option to measure eligible financial assets, financial liabilities and commitments at fair value (i.e. the fair value option), on an instrument-by-instrument basis, that are otherwise not permitted to be accounted for at fair value under other accounting standards. The election to use the fair value option is available when an entity first recognizes a financial asset or financial liability or upon entering into a commitm ent. Subsequent changes in fair value must be recorded in earnings. The Company applies the fair value option on residential mortgage loans held for sale. The fair value option on residential mortgage loans allows the recognition of gains on sale of mor tgage loans to more accurately reflect the timing and economics of the transaction. The standard for fair value measurement establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy g ives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are desc ribed below. Basis of Fair Value Measurement: Level 1- Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; Level 2- Quoted prices in markets that are not active, or inpu ts that are observable, either directly or indirectly, for substantially the full term of the asset or liability; Level 3- Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e. sup ported by little or no market activity). A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Changes to interest rates may result in changes in the ca sh flows due to prepayments or extinguishments. Accordingly, this could result in higher or lower measurements of the fair values. Assets and Liabilities Mortgage loans held for sale Mortgage loans held for sale are valued based on quotations from the secondary market for similar instruments and are classified as Level 2 of the fair value hierarchy. Investments available-for-sale U.S. government agencies and mortgage-back ed securities Valuations are based on active market data and use of evaluated broker pricing models that vary based by asset class and includes available trade, bid, and other market information. Generally, the methodology includes broker quotes, proprietary models, descriptive terms and conditions databases coupl ed with extensive quality control programs. Multiple quality control evaluation processes review available market, credit and deal level information to support the evaluation of the security. If there is a lack of objectively verifiable information avail able to support the valuation, the evaluation of the security is discontinued. Additionally, proprietary models and pricing systems, mathematical tools, actual transacted prices, integration of market developments and experienced evaluators are used to de termine the value of a security based on a hierarchy of market information regarding a security or securities with similar characteristics. The Company does not adjust the quoted price for such securities. Such instruments are generally classified within Level 2 of the fair value hierarchy. State and municipal securities Proprietary valuation matrices are used for valuing all tax-exempt municipals that can incorporate changes in the municipal market as they occur. Market evaluation models include the ab ility to value bank qualified municipals and general market municipals that can be broken down further according to insurer, credit support, state of issuance and rating to incorporate additional spreads and municipal curves. Taxable municipals are valued using a third party model that incorporates a methodology that captures the trading nuances associated with these bonds. Such instruments are generally classified within Level 2 of the fair value hierarchy. Interest rate swap agreements Interest rate swap agreement s are measured by alternative pricing sources with reasonable levels of price transparency in markets that are not active. Based on the complex nature of interest rate swap agreements, the markets these instruments trade in are not as efficient and are le ss liquid than that of the more mature Level 1 markets. These markets do however have comparable, observable inputs in which an alternative pricing source values these assets in order to arrive at a fair market value. These characteristics classify inter est rate swap agreements as Level 2. Assets Measured at Fair Value on a Recurring Basis The following tables set forth the Company’s financial assets and liabilities at the dates indicated that were accounted for or disclosed at fair value. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement: March 31, 2018 Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs (In thousands) (Level 1) (Level 2) (Level 3) Total Assets Residential mortgage loans held for sale $ - $ 28,486 $ - $ 28,486 Investments available-for-sale: U.S. government agencies - 208,304 - 208,304 State and municipal - 330,546 - 330,546 Mortgage-backed - 428,144 - 428,144 Corporate debt - - 9,352 9,352 Trust preferred - - 310 310 Marketable equity securities - 568 - 568 Interest rate swap agreements - 574 - 574 Liabilities Interest rate swap agreements $ - $ (574) $ - $ (574) December 31, 2017 Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs (In thousands) (Level 1) (Level 2) (Level 3) Total Assets Residential mortgage loans held for sale $ - $ 9,848 $ - $ 9,848 Investments available-for-sale: U.S. government agencies - 106,568 - 106,568 State and municipal - 312,253 - 312,253 Mortgage-backed - 300,040 - 300,040 Corporate debt - - 9,432 9,432 Trust preferred - - 1,002 1,002 Marketable equity securities - 212 - 212 Interest rate swap agreements - 707 - 707 Liabilities Interest rate swap agreements $ - $ (707) $ - $ (707) The following table provides unrealized losses included in assets measured in the Condensed Consolidated Statements of Condition at fair value on a recurring basis for the period indicated: Significant Unobservable Inputs (In thousands) (Level 3) Investments available-for-sale: Balance at January 1, 2018 $ 10,434 Additions of Level 3 assets 310 Principal sales (1,002) Total unrealized losses included in other comprehensive loss (80) Balance at March 31, 2018 $ 9,662 Assets Measured at Fair Value on a Nonrecurring Basis The following table sets forth the Company’s financial assets subject to fair value adjustments (impairment) on a nonrecurring basis at the date indicated that are valued at the lower of cost or market. Assets are classified in their entirety based on the lowest level of input that is significant to the fair value measurement: March 31, 2018 Quoted Prices in Significant Active Markets Other Significant for Identical Observable Unobservable (In thousands) Assets (Level 1) Inputs (Level 2) Inputs (Level 3) Total Total Losses Impaired loans $ - $ - $ 8,234 $ 8,234 $ (10,749) Other real estate owned - - 2,761 2,761 (54) Total $ - $ - $ 10,995 $ 10,995 $ (10,803) December 31, 2017 Quoted Prices in Significant Active Markets Other Significant for Identical Observable Unobservable (In thousands) Assets (Level 1) Inputs (Level 2) Inputs (Level 3) Total Total Losses Impaired loans $ - $ - $ 8,474 $ 8,474 $ (11,806) Other real estate owned - - 2,253 2,253 (158) Total $ - $ - $ 10,727 $ 10,727 $ (11,964) At March 31, 2018 , impaired loans totaling $2 0 . 8 million were written down to fair value of $1 6 . 3 million as a result of spe cific loan loss allowances of $4 . 5 million associated with the impaired loans which was included in the allowance for loan losses. Impaired loans totaling $20 .8 million were wri tten down to fair value of $16 .8 million at December 31, 2017 as a result of speci fic loan loss allowances of $4.0 million associated with the impaired loans. Loan impairment is measured using the present value of expected cash flows, the loan’s observable market price or the fair value of the collateral (less selling costs) if the loans are collater al dependent. Collateral may be real estate and/or business assets including equipment, inventory and/or acc ounts receivable. The value of business equipment, inventory and accounts receivable collateral is based on net book value on the business’ financial statements and, if necessary, discounted based on management’s review and analysis. Appraised and reporte d values may be discounted based on management’s historical knowledge, changes in market conditions from the time of valuation, and/or management’s expertise and knowledge of the client and client’s business. Impaired loans are reviewed and evaluated on a t least a quarterly basis for additional impairment and adjusted accordingly, based on the factors identified above. Valuation techniques are consistent with those techniques applied in prior periods. Other real estate owned (“OREO”) is adjusted to fair value upon transfer of the loans to OREO. Subsequently, OREO is carried at the lower of carrying value or fair value. The estimated fair value for other real estate owned included in Level 3 is determined by independent market based appraisals and other available market information, less cost to sell, that may be reduced further based on market expectations or an executed sales agreement. If the fair value of the collateral deteriorates subseque nt to initial recognition, the Company records the OREO as a non-recurring Level 3 adjustment. Valuation techniques are consistent with those techniques applied in prior periods. Fair Value of Financial Instruments The Company discloses fair value information of financial instruments that are not measured at fair value in the financial statements based on the exit price notion. Fair value is the amount at which a financial instrument could be exchanged in a current transaction between willing parties, other than in a forced sale or liquidation, and is best evidenced by a quoted market price, if one exists. Quoted market prices, where available, are shown as estimates of fair market values. Because no quoted market prices are available for a significant portion of the Company's financial instruments, the fair value of such instruments has been derived based on the amount and timing of future cash flows and estimated discount rates based on observable inputs (“Level 2 ”) or unobservable inputs (“Level 3”). Present value techniques used in estimating the fair value of many of the Company's financial instruments are significantly affected by the assumptions used. 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 cash settlement of the instrument. Additionally, the accompanying estimates of fair values are only representative of the fair values of the individu al financial assets and liabilities, and should not be considered an indication of the fair value of the Company. Management utilizes internal models used in asset liability management to determine the fair values disclosed below. The carrying amounts and fair values of the Company’s financial instruments at the dates indicated are presented in the following table: Fair Value Measurements March 31, 2018 Quoted Prices in Estimated Active Markets for Significant Other Significant Carrying Fair Identical Assets Observable Inputs Unobservable Inputs (In thousands) Amount Value (Level 1) (Level 2) (Level 3) Financial Assets Other equity securities $ 63,115 $ 63,115 $ - $ 63,115 $ - Loans, net of allowance 6,014,620 6,043,115 - - 6,043,115 Other assets 108,839 108,839 - 108,839 - Financial Liabilities Time deposits $ 1,206,603 $ 1,222,469 $ - $ 1,222,469 $ - Securities sold under retail repurchase agreements and federal funds purchased 149,323 149,323 - 149,323 - Advances from FHLB 1,011,109 1,012,398 - 1,012,398 - Subordinated debentures 37,530 37,530 - - 37,530 Fair Value Measurements December 31, 2017 Quoted Prices in Estimated Active Markets for Significant Other Significant Carrying Fair Identical Assets Observable Inputs Unobservable Inputs (In thousands) Amount Value (Level 1) (Level 2) (Level 3) Financial Assets Other equity securities $ 45,518 $ 45,518 $ - $ 45,518 $ - Loans, net of allowance 4,268,991 4,320,719 - - 4,320,719 Other assets 95,730 95,730 - 95,730 - Financial Liabilities Time deposits $ 688,951 $ 684,139 $ - $ 684,139 $ - Securities sold under retail repurchase agreements and federal funds purchased 119,359 119,359 - 119,359 - Advances from FHLB 765,833 769,860 - 769,860 - Subordinated debentures - - - - -

SEGMENT REPORTING

SEGMENT REPORTING	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
SEGMENT REPORTING	N ote 16 - Segment Reporting Currently, the Company conducts business in three operating segments—Community Banking, Insurance and Investment Management. Each of the operating segments is a strategic business unit that offers different products and services. The Insurance and Investment Management segments were businesses that were acquired in separate transactions where management of the acquired business was retained. The accounting policies of the segments are the same as those of the Compa ny. However, the segment data reflect inter-segment transactions and balances. The Community Banking segment is conducted through Sandy Spring Bank and involves delivering a broad range of financial products and services, including various loan and depos it products to both individuals and businesses. Parent company income is included in the Community Banking segment, as the majority of effort of these functions is related to this segment. Major revenue sources include net interest income, gains on sales of mortga ge loans, trust income fees and service charges on deposit accounts. Expenses include personnel, occupancy, marketing, equipment and other expenses. Non-cash charges associated with amortization of intangibles was $0.5 million for the three months ended March 31, 2018 . This amount was not significant for the three months ended March 31, 2017 . The Insurance segment is conducted through Sandy Spring Insurance Corporation, a subsidiary of the Bank, and offers annuities as an alternative to traditional deposit accounts. Sandy Spring Insurance Corporation operates Sandy Spring Insurance, a general insurance agency located in Annapolis, Maryland, and Neff and Associates, located in Ocean City, Maryland. Major sources of r evenue are insurance commissions from commercial lines, personal lines, and medical liability lines. Expenses include personnel and support charges. Non-cash charges associated with amortization of intangibles was not significant for the three m onths ended March 31, 2018 and 2017 , respectively. The Investment Management segment is conducted through West Financial Services, Inc., a subsidiary of the Bank. This asset management and financial planning firm, located in McLean, Virginia, provides comprehensive investment management and financial planning to individuals, families, small businesses and associations including cash flow analysis, investment review, tax planning, retirement planning, insurance analysis and estate planning. West Financi al currently has approximately $1. 5 billion in assets under management. Major revenue sources include non-interest income earned on the above services. Expenses include personnel and support charges. Non-cash charges associated with amortization of inta ngibles was not significant for the three months ended March 31, 2018 and 2017 , respectively. Information for the operating segments and reconciliation of the information to the condensed consolidated financial statements for the periods indicated is presented in the following tables: Three Months Ended March 31, 2018 Community Investment Inter-Segment (In thousands) Banking Insurance Mgmt. Elimination Total Interest income $ 75,504 $ - $ 1 $ (1) $ 75,504 Interest expense 12,614 - - (1) 12,613 Provision for loan losses 1,997 - - - 1,997 Noninterest income 13,171 1,822 2,279 (154) 17,118 Noninterest expense 47,031 1,379 1,385 (154) 49,641 Income before income taxes 27,033 443 895 - 28,371 Income tax expense 6,353 123 230 - 6,706 Net income $ 20,680 $ 320 $ 665 $ - $ 21,665 Assets $ 7,894,964 $ 8,984 $ 16,216 $ (25,246) $ 7,894,918 Three Months Ended March 31, 2017 Community Investment Inter-Segment (In thousands) Banking Insurance Mgmt. Elimination Total Interest income $ 45,957 $ 1 $ 2 $ (2) $ 45,958 Interest expense 5,707 - - (2) 5,705 Provision for loan losses 194 - - - 194 Non-interest income 9,086 1,752 2,003 (209) 12,632 Non-interest expense 27,799 1,355 1,036 (209) 29,981 Income before income taxes 21,343 398 969 - 22,710 Income tax expense 7,060 161 377 - 7,598 Net income $ 14,283 $ 237 $ 592 $ - $ 15,112 Assets $ 5,202,560 $ 8,066 $ 14,577 $ (24,039) $ 5,201,164

SIGNIFICANT ACCOUNTING POLICI25

SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Mar. 31, 2018
Significant Accounting Policies [Abstract]
Nature of Operations	Nature of Operations Sandy Spring Bancorp (the “Company”), a Maryland corporation, is the bank holding company for Sandy Spring Bank (the “Bank”). The Bank offers a broad range of commercial banking, retail banking , mortgage and trust services throughout central Maryland, Northern Virginia and the greater Washington D.C . market through its oper ation of 55 community offices and six financial centers across the region. The Bank also offers a comprehensive menu of insurance and wealth management services through its subsidiaries, Sandy Spring Insurance Corporation and West Financial Services, Inc.
Basis of Presentation	Basis of Presentation The accounting and reporting policies of the Company conform to accounting principles generally accepted in the United States of America (“GAAP”) and prevailing practices within the financial services industry for interim financial information and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and notes required for complete financial statements and prevailing practices within the banking industry. The following summary of significant account ing policies of the Company is presented to assist the reader in understanding the financial and other data presented in this report. Operating results for the three months ended March 31, 2018 are not necessarily indicative of the results that may be expected for any future periods or for the year ending December 31, 2018 . In the opinion of management, all adjustments (comprising only normal recurring accruals) necessary for a fair presentation of the results of the interim periods have been incl uded. Certain reclassifications have been made to prior period amounts, as necessary, to conform to the current period presentation. The Company has evaluated subsequent events through the date of the issuance of its financial statements. These statement s should be read in conjunction with the financial statements and accompanying notes included in the Company’s 2017 Annual Report on Form 10-K as filed with the Securities and Exchange Commission (“SEC”) on February 23, 2018 . There have been no sign ificant changes to the Company’s accounting p olicies as disclosed in the 2017 Annual Report on Form 10-K.
Principles of Consolidation	Principles of Consolidation The unaudited condensed consolidated financial statements include the accounts of the Company and its wholly owned su bsidiary, Sandy Spring Bank and its subsidiaries, Sandy Spring Insurance Corporation and West Financial Services, Inc. Consolidation has resulted in the elimination of all intercompany accounts and transactions.
Use of Estimates	Use of Estimates The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements, and affect the reported a mounts of revenues earned and expenses incurred during the reporting period. Actual results could differ from those estimates. Estimates that could change significantly relate to the provision for loan losses and the related allowance, determination of imp aired loans and the related measurement of impairment, potential impairment of goodwill or other intangible assets, valuation of investment securities and the determination of whether impaired securities are other-than-temporarily impaired, valuation of ot her real estate owned, prepayment rates, valuation of share-based compensation, the assessment that a liability should be recognized with respect to any matters under litigation, the calculation of current and deferred income taxes and the actuarial projec tions related to pension expense and the related liability.
Cash Flows	Cash Flows For purposes of reporting cash flows, cash and cash equivalents include cash and due from banks, federal funds sold and interest-bearing deposits with banks (items with stated original maturity of three months or less).
Revenue from Contract with Customers [Policy Text Block]	Revenue from Contracts with Customers The Company’s revenue includes net interest income on financial instruments and non-interest income. Specific categories of revenue are presented in the Condensed Consolidated Statements of Income. Most of the Company’s revenue is not within the scope of Accounting Standard Update (ASU) No. 2014-09 – Revenue from Contracts with Customers. For revenue within the scope of ASU 2014-09, the Company provides services to customers and has related performance obligations. The revenue is recognized upon satisfaction of all contractual performance obligations. The following discusses key revenue streams within the scope of the new revenue recognition guidance. Wealth Management Income We st Financial Services, Inc., a subsidiary of the Bank, provides comprehensive investment management and financial planning services. Wealth management income is comprised of income for providing trust, estate and investment management services. Trust servi ces include acting as a trustee for corporate or personal trusts. Investment management services include investment management, record-keeping and reporting of security portfolios. Fees for these services are recognized based on contractually agreed fixed percentage applied to net assets under management at the end of each reporting period. The Company does not charge/recognize any performance based fees. Insurance Agency Commissions Sandy Spring Insurance, the Company’s subsidiary, performs the function o f an insurance intermediary by introducing the policyholder and insurer and is compensated by a commission fee for placement of an insurance policy. Sandy Spring Insurance does not provide any captive management services or any claim handling services. Com mission fees are set as a percentage of the premium for the insurance policy for which the Sandy Spring Insurance is a producer. The Company recognizes revenue when the insurance policy has been contractually agreed to by the insurer and policyholder (at t ransaction date). Service Charges on Deposit Accounts Service charges on deposit accounts are earned on depository accounts for consumer and commercial account holders and include fees for account and overdraft services. Account services include fees for event-driven services and periodic account maintenance activities. The obligation for event-driven services is satisfied at the time of the event when service is delivered and revenue recognized as earned. Obligation for maintenance activities is satisfied over the course of each month and revenue recognized at month end. Obligation for overdraft services is satisfied at the time of the overdraft and revenue recognized as earned.
Loans Acquired with Deteriorated Credit Quality [Policy Text Block]	Loans Acquired with Deteriorated Credit Quality Acquired loans with evidence of credit deterioration since their origination as of the date of the acquisition are recorded at their initial fair value. Credit deterioration is determined based on the probability of collection of all contractually required principal and interest paym ents. The historical allowance for loan and lease losses related to the acquired loans is not carried over to the Company. The determination of credit quality deterioration as of the purchase date may include parameters such as past due and non-accrual s tatus, commercial risk ratings, cash flow projections, type of loan and collateral, collateral value and recent loan-to-value ratios or appraised values. For loans acquired with evidence of credit deterioration, the Company determines at the acquisition d ate the excess of the loan’s contractually required payments over all cash flows expected to be collected as an amount that should not be accreted into interest income (nonaccretable difference). The remaining amount, representing the difference in the exp ected cash flows of acquired loans and the initial investment in the acquired loans, is accreted into interest income over the remaining life of the loan or pool of loans (accretable yield). Subsequent to the purchase date, increases in expected cash flows over those expected at the purchase date are recognized prospectively as interest income over the remaining life of the loan as an adjustment to the accretable yield. The present value of any decreases in expected cash flows after the purchase date is re cognized as an impairment through addition to the valuation allowance.
Pending Accounting Pronouncements	Adopted Accounting Pronouncements The FASB issued Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) , in May 2014 that provides accounting guidance for all revenue arising from contracts with customers and affects all entities that enter into contracts to provide goods or services to customers. The guidance also provides for a model for the measurement and recognition of gains and losses on the sale of certai n nonfinancial assets, such as property and equipment, including real estate. For financial reporting purposes, the standard allows for either full retrospective adoption, meaning the standard is applied to all of the periods presented, or modified retrosp ective adoption, meaning the standard is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the standard recognized at the date of initial application. The Company’s revenue is com prised of net interest income and non-interest income. The guidance does not apply to revenue associated with financial instruments, net interest income, mortgage origination and servicing activities, and gains and losses from securities. Accordingly, the majority of the Company’s revenues are not be affected. The following revenue streams were identified to be in scope of ASC 606: 1) wealth management income; 2) insurance agency commissions; and 3) service charges on deposit accounts. The Company adopted t he standard on January 1, 2018. The Company’s accounting policies and revenue recognition principles did not change materially as the principles of ASC 606 are largely consistent with the current revenue recognition practices. The FASB issued Update No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income , in February 2018. The guidance permits entities to reclassify from accumulated other comprehensive income (“OCI”) to retained earnings stranded income tax effects resulting from the Tax Cuts and Jobs Act enacted in December 2017. The Company made the election to adopt this guidance during the first quarter of 2018 and reclassified $ 1.5 million of strand ed income tax effects from OCI to retained earnings. The Company made the adjustment between OCI and retained earnings in the Condensed Consolidated Statements of Changes in Stockholders’ Equity as of the beginning of the current reporting period. The FAS B issued Update No. 2016-01, Financial Instruments – (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities” , in January 2016. This guidance amends the presentation and accounting for certain financial instruments, including li abilities measured at fair value under fair value option and equity investments. The guidance also updates fair value presentation and disclosure requirements for financial instruments measured at amortized cost. The Company adopted the guidance in the fir st quarter 2018 with no impact to retained earnings or other comprehensive income. The Company has no investments in marketable equity securities classified as available-for-sale accounted for at fair value. The Company’s marketable equity securities that do not have determinable fair values are measured at cost less any impairment. The Company’s existing accounting policy is similar to measurement alternative provided by the guidance, except the carrying value is adjusted through earnings for subsequent ob servable transactions in the same or similar investment. For purposes of disclosing fair values of financial instruments carried at amortized cost, we determined the fair values based on “exit price” as required by the guidance. Pending Accounting Pronouncements The FASB issued Update No. 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities , in March 2017. This guidance is intended to eliminate the current diversity i n practice with respect to the amortization period for certain purchased callable debt securities held at a premium. Under current generally accepted accounting principles (GAAP), entities generally amortize the premium as an adjustment of yield over the c ontractual life. As a result, upon the exercise of a call on a callable debt security held at a premium, the unamortized premium is recorded as a loss in earnings. The amendments in this update shorten the amortization period for such callable debt securit ies held at a premium requiring the premium to be amortized to the earliest call date. This guidance is effective for a public business entity that is a U.S. Securities and Exchange Commission (SEC) filer for its fiscal years, and interim periods within th ose fiscal years, beginning after December 15, 2019. The adoption of this standard is not expected to have a material impact on the Company’s financial position, results of operations or cash flows. The FASB issued Update No. 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment , in January 2017. The objective of this guidance is to simplify an entity’s required test for impairment of goodwill by eliminating Step 2 from the goodwill impairment test. In Step 2 an entity measured a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. In computing the implied fair value of goodwill, an entity had to determine the fair value at the impai rment date of its assets and liabilities, including any unrecognized assets and liabilities, following a procedure that would be required in determining the fair value of assets acquired and liabilities assumed in a business combination. Under this Update, an entity should perform its annual or quarterly goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount and record an impairment charge for the excess of the carrying amount over the reporting unit’s fair value . The loss recognized should not exceed the total amount of goodwill allocated to the reporting unit and the entity must consider the income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodw ill impairment loss, if applicable. This guidance is effective for a public business entity that is an SEC filer for its annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. The adoption of this standard is not expected to have a material impact on the Company’s financial position, results of operations or cash flows. The FASB issued Update No. 2016-13, Current Expected Credit Losses (CECL) , in June 2016. This guidance changes the impairment model for most financial assets measured at amortized cost and certain other instruments. Entities will be required to use an expected loss model, replacing the incurred loss model that is currently in use. Under the new guidance, an entity will measure all expected cred it losses for financial instruments held at the reporting date based on historical experience, current condition and reasonable and supportable forecasts. This will result in earlier recognition of loss allowances in most instances. Credit losses related to available-for-sale debt securities (regardless of whether the impairment is considered to be other-than-temporary) will be measured in a manner similar to the present, except that such losses will be recorded as allowances rather than as reductions in t he amortized cost of the related securities. With respect to trade and other receivables, loans, held-to-maturity debt securities, net investments in leases and off-balance-sheet credit exposures, the guidance requires that an entity estimate its lifetime expected credit loss and record an allowance resulting in the net amount expected to be collected to be reflected as the financial asset. Entities are also required to provide significantly more disclosures, including information used to track credit qual ity by year of origination for most financing receivables. This guidance is effective for public business entities for the first interim or annual period beginning after December 15, 2019. The standard’s provisions will be applied as a cumulative-effect ad justment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. Early adoption by public business entities is permitted for the first interim or annual period beginning after December 15, 2018. The Compan y is assessing this guidance to determine its impact on the Company’s financial position, results of operations and cash flows. The FASB issued Update No. 2016-02 , Leases , in February 2016. From the lessee’s perspective, the new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as ei ther finance or operating, with classification affecting the pattern of expense recognition in the income statement for lessees. The guidance also eliminates the current real estate-specific provision and changes the guidance on sale-leaseback transactions , initial direct costs and lease executory costs. With respect to lessors, the guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. All entities will classify leases to determine how to recognize leas e-related revenue and expense. In applying this guidance entities will also need to determine whether an arrangement contains a lease or service agreement. Disclosures are required by lessees and lessors to meet the objective of enabling users of financial s statements to assess the amount, timing, and uncertainty of cash flows arising from leases. For public entities, this guidance is effective for the first interim or annual period beginning after December 15, 2018. Early adoption is permitted. Entities ar e required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. The Company is assessing this guidance to determine its impact on the Company’ s financial position, results of operations and cash flows.

ACQUISITION OF WASHINGTONFIRS26

ACQUISITION OF WASHINGTONFIRST BANKSHARES INC (Tables)	3 Months Ended
	Mar. 31, 2018
Acqusition of WashingtonFirst Bankshares Inc. [Abstract]
Provisional fair values of acquired identifiable assets and liabilities assumed	(In thousands) January 1, 2018 Purchase Price: Fair value of common shares issued (11,446,197 shares), $ 446,640 based on Sandy Spring's share price of $39.02 Cash for fractional shares 10 Total purchase price $ 446,650 Identifiable assets: Cash and cash equivalents $ 32,497 Residential mortgage loans held for sale 25,789 Investment securities 302,321 Loans 1,683,683 Premises and equipment 4,602 Other Real Estate Owned 497 Accrued Interest Receivable 6,648 Other Intangible assets 11,370 Other Assets 33,764 Total identifiable assets $ 2,101,171 Identifiable liabilities: Deposits $ 1,610,327 Borrowings 283,808 Other Liabilities 17,525 Total identifiable liabilities $ 1,911,660 Provisional fair value of net assets acquired including identifiable intangible assets 189,511 Provisional resulting goodwill $ 257,139

INVESTMENTS (Tables)

INVESTMENTS (Tables)	3 Months Ended
	Mar. 31, 2018
Amortized cost and Estimated fair values of Investments Available-for-sale	March 31, 2018 December 31, 2017 Gross Gross Estimated Gross Gross Estimated Amortized Unrealized Unrealized Fair Amortized Unrealized Unrealized Fair (In thousands) Cost Gains Losses Value Cost Gains Losses Value U.S. government agencies $ 213,734 $ 1 $ (5,431) $ 208,304 $ 109,349 $ - $ (2,781) $ 106,568 State and municipal 328,324 3,918 (1,696) 330,546 306,109 6,313 (169) 312,253 Mortgage-backed 436,797 920 (9,573) 428,144 302,664 1,585 (4,209) 300,040 Corporate debt 9,100 252 - 9,352 9,100 332 - 9,432 Trust preferred 310 - - 310 931 71 - 1,002 Total debt securities 988,265 5,091 (16,700) 976,656 728,153 8,301 (7,159) 729,295 Marketable equity securities 568 - - 568 212 - - 212 Total investments available-for-sale $ 988,833 $ 5,091 $ (16,700) $ 977,224 $ 728,365 $ 8,301 $ (7,159) $ 729,507
Other Equity Securities	Equity securities Other equity securities at the dates indicated are presented in the following table: (In thousands) March 31, 2018 December 31, 2017 Federal Reserve Bank stock $ 13,349 $ 8,398 Federal Home Loan Bank of Atlanta stock 49,766 37,120 Total equity securities $ 63,115 $ 45,518
Available-for-Sale Securities
Gross Unrealized Losses and Fair Value by Length of Time	Gross unrealized losses and fair value by length of time that the individual available-for-sale securities have been in an unrealized loss position at the dates indicated are presented in the following table: March 31, 2018 Continuous Unrealized Losses Existing for: Number Total of Less than More than Unrealized (Dollars in thousands) Securities Fair Value 12 months 12 months Losses U.S. government agencies 57 $ 206,828 $ 2,208 $ 3,223 $ 5,431 State and municipal 116 109,344 1,652 44 1,696 Mortgage-backed 139 393,630 3,478 6,095 9,573 Total 312 $ 709,802 $ 7,338 $ 9,362 $ 16,700 December 31, 2017 Continuous Unrealized Losses Existing for: Number Total of Less than More than Unrealized (Dollars in thousands) Securities Fair Value 12 months 12 months Losses U.S. government agencies 13 $ 106,568 $ 545 $ 2,236 $ 2,781 State and municipal 20 18,228 107 62 169 Mortgage-backed 46 221,621 402 3,807 4,209 Total 79 $ 346,417 $ 1,054 $ 6,105 $ 7,159
Amortized Cost and Estimated Fair Values of Investment Securities	The amortized cost and estimated fair values of debt securities available-for-sale by contractual maturity at the dates indicated are provided in the following table. The Company has allocated mortgage-backed securities into the four maturity groupings reflected in the following table using the expected av erage life of the individual securities based on statistics provided by independent third party industry sources. Expected maturities will differ from contractual maturities as borrowers may have the right to prepay obligations with o r without prepayment penalties. March 31, 2018 December 31, 2017 Estimated Estimated Amortized Fair Amortized Fair (In thousands) Cost Value Cost Value Due in one year or less $ 40,224 $ 40,564 $ 12,789 $ 12,889 Due after one year through five years 265,558 267,383 180,109 184,264 Due after five years through ten years 278,570 273,027 228,484 227,688 Due after ten years 403,913 395,682 306,771 304,454 Total debt securities available for sale $ 988,265 $ 976,656 $ 728,153 $ 729,295

LOANS AND LEASES (Tables)

LOANS AND LEASES (Tables)	3 Months Ended
	Mar. 31, 2018
Loans and Leases [Abstract]
Loan Portfolio Segment Balances	(In thousands) March 31, 2018 December 31, 2017 Residential real estate: Residential mortgage $ 992,287 $ 921,435 Residential construction 215,445 176,687 Commercial real estate: Commercial owner occupied real estate 1,174,739 857,196 Commercial investor real estate 1,928,439 1,112,710 Commercial AD&C 564,871 292,443 Commercial business 652,797 497,948 Consumer 532,973 455,829 Total loans $ 6,061,551 $ 4,314,248
Loans acquired accounted for at fair value	(Dollars in thousands) January 1, 2018 Gross amortized cost basis at January 1, 2018 $ 1,697,760 Interest rate fair value adjustment 15,591 Credit fair value adjustment on pools of homogeneous loans (22,421) Credit fair value adjustment on purchased credit impaired loans (7,247) Fair value of acquired loan portfolio at January 1, 2018 $ 1,683,683
Acquired credit impaired laons receivable	(Dollars in thousands) January 1, 2018 Contractual principal and interest at acquisition $ 28,502 Contractual cash flows not expected to be collected (Nonaccretable yield) (9,027) Expected cash flows at acquisition 19,475 Interest component of expected cash flows (Accretable yield) (2,511) Fair value of purchased credit impaired loans $ 16,964
Accretable yield acitivity since acquisition date	Three Months Ended March 31, 2018 (Dollars in thousands) Accretable yield at the beginning of the period $ - Addition of accretable yield due to acquisitions 2,511 Accretion into interest income (341) Accretable yield at the end of the period. $ 2,170

CREDIT QUALITY ASSESSMENT (Tabl

CREDIT QUALITY ASSESSMENT (Tables)	3 Months Ended
	Mar. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Summary Information on Allowance for Loan and Lease Loss Activity	Summary information on t he allowance for loan loss activity for the period indicated is provided in the following table: Three Months Ended March 31, (In thousands) 2018 2017 Balance at beginning of year $ 45,257 $ 44,067 Provision for loan losses 1,997 194 Loan charge-offs (477) (482) Loan recoveries 154 82 Net charge-offs (323) (400) Balance at period end $ 46,931 $ 43,861
Activity in Allowance for Loan and Lease Losses by Respective Loan Portfolio Segment	The following tables provide information on the activity in t he allowance for loan losses by the respective loan portfolio segment for the period indicated: For the Three Months Ended March 31, 2018 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Commercial Owner Residential Residential (Dollars in thousands) Business AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Balance at beginning of year $ 8,711 $ 3,501 $ 14,970 $ 7,178 $ 2,383 $ 7,268 $ 1,246 $ 45,257 Provision (credit) 415 254 1,102 (172) 226 (190) 362 1,997 Charge-offs (331) - - - (146) - - (477) Recoveries 9 62 8 - 47 22 6 154 Net recoveries (charge-offs) (322) 62 8 - (99) 22 6 (323) Balance at end of period $ 8,804 $ 3,817 $ 16,080 $ 7,006 $ 2,510 $ 7,100 $ 1,614 $ 46,931 Total loans and leases $ 652,797 $ 564,871 $ 1,928,439 $ 1,174,739 $ 532,973 $ 992,287 $ 215,445 $ 6,061,551 Allowance for loans losses to total loans ratio 1.35% 0.68% 0.83% 0.60% 0.47% 0.72% 0.75% 0.77% Balance of loans specifically evaluated for impairment $ 7,944 $ 136 $ 5,813 $ 4,009 $ N/A $ 2,891 $ - $ 20,793 Allowance for loans specifically evaluated for impairment $ 3,096 $ - $ 1,255 $ 128 $ N/A $ - $ - $ 4,479 Specific allowance to specific loans ratio 38.97% - 21.59% 3.19% N/A - - 21.54% Balance of loans collectively evaluated $ 644,853 $ 564,735 $ 1,922,626 $ 1,170,730 $ 532,973 $ 989,396 $ 215,445 $ 6,040,758 Allowance for loans collectively evaluated $ 5,708 $ 3,817 $ 14,825 $ 6,878 $ 2,510 $ 7,100 $ 1,614 $ 42,452 Collective allowance to collective loans ratio 0.89% 0.68% 0.77% 0.59% 0.47% 0.72% 0.75% 0.70% For the Year Ended December 31,2017 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Commercial Owner Residential Residential (Dollars in thousands) Business AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Balance at beginning of year $ 7,539 $ 4,652 $ 12,939 $ 7,885 $ 2,828 $ 7,261 $ 963 $ 44,067 Provision (credit) 2,616 (1,254) 1,930 (459) (57) (56) 257 2,977 Charge-offs (1,538) - - (248) (693) (87) - (2,566) Recoveries 94 103 101 - 305 150 26 779 Net recoveries (charge-offs) (1,444) 103 101 (248) (388) 63 26 (1,787) Balance at end of period $ 8,711 $ 3,501 $ 14,970 $ 7,178 $ 2,383 $ 7,268 $ 1,246 $ 45,257 Total loans and leases $ 497,948 $ 292,443 $ 1,112,710 $ 857,196 $ 455,829 $ 921,435 $ 176,687 $ 4,314,248 Allowance for loan losses to total loans ratio 1.75% 1.20% 1.35% 0.84% 0.52% 0.79% 0.71% 1.05% Balance of loans specifically evaluated for impairment $ 8,105 $ 136 $ 5,575 $ 4,078 $ N/A $ 2,915 $ - $ 20,809 Allowance for loans specifically evaluated for impairment $ 3,220 $ - $ 663 $ 131 $ N/A $ - $ - $ 4,014 Specific allowance to specific loans ratio 39.73% - 11.89% 3.21% N/A - - 19.29% Balance of loans collectively evaluated $ 489,843 $ 292,307 $ 1,107,135 $ 853,118 $ 455,829 $ 918,520 $ 176,687 $ 4,293,439 Allowance for loans collectively evaluated $ 5,491 $ 3,501 $ 14,307 $ 7,047 $ 2,383 $ 7,268 $ 1,246 $ 41,243 Collective allowance to collective loans ratio 1.12% 1.20% 1.29% 0.83% 0.52% 0.79% 0.71% 0.96%
Summary of Impaired Loans	The following table provides summary information regarding impaired loans at the dates indicated and for the periods then ended: (In thousands) March 31, 2018 December 31, 2017 Impaired loans with a specific allowance $ 11,446 $ 11,693 Impaired loans without a specific allowance 9,347 9,116 Total impaired loans $ 20,793 $ 20,809 Allowance for loan losses related to impaired loans $ 4,479 $ 4,014 Allowance for loan losses related to loans collectively evaluated 42,452 41,243 Total allowance for loan losses $ 46,931 $ 45,257 Average impaired loans for the period $ 20,802 $ 23,179 Contractual interest income due on impaired loans during the period $ 649 $ 2,314 Interest income on impaired loans recognized on a cash basis $ 111 $ 754 Interest income on impaired loans recognized on an accrual basis $ 46 $ 169
Recorded Investment with Respect to Impaired loans, Associated Allowance by Applicable Portfolio Segment and Principal Balance of Impaired Loans Prior to Amounts Charged-Off	The following tables present the recorded investment with respect to impaired loans, the associated allowance by the applicable portfolio segment and the principal balance of the impaired loans prior to amounts charged-off at the dates indicated: March 31, 2018 Commercial Real Estate Total Recorded Commercial All Investment in Commercial Commercial Owner Other Impaired (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Loans Impaired loans with a specific allowance Non-accruing $ 4,534 $ - $ 5,158 $ - $ - $ 9,692 Restructured accruing 863 - - - - 863 Restructured non-accruing 111 - - 780 - 891 Balance $ 5,508 $ - $ 5,158 $ 780 $ - $ 11,446 Allowance $ 3,096 $ - $ 1,255 $ 128 $ - $ 4,479 Impaired loans without a specific allowance Non-accruing $ 317 $ - $ 655 $ 1,292 $ - $ 2,264 Restructured accruing 447 - - 485 883 1,815 Restructured non-accruing 1,672 136 - 1,452 2,008 5,268 Balance $ 2,436 $ 136 $ 655 $ 3,229 $ 2,891 $ 9,347 Total impaired loans Non-accruing $ 4,851 $ - $ 5,813 $ 1,292 $ - $ 11,956 Restructured accruing 1,310 - - 485 883 2,678 Restructured non-accruing 1,783 136 - 2,232 2,008 6,159 Balance $ 7,944 $ 136 $ 5,813 $ 4,009 $ 2,891 $ 20,793 Unpaid principal balance in total impaired loans $ 11,003 $ 1,248 $ 10,401 $ 6,299 $ 3,667 $ 32,618 March 31, 2018 Commercial Real Estate Total Recorded Commercial All Investment in Commercial Commercial Owner Other Impaired (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Loans Average impaired loans for the period $ 8,025 $ 136 $ 5,694 $ 4,044 $ 2,903 $ 20,802 Contractual interest income due on impaired loans during the period $ 256 $ 89 $ 156 $ 105 $ 43 Interest income on impaired loans recognized on a cash basis $ 51 $ - $ 4 $ 44 $ 12 Interest income on impaired loans recognized on an accrual basis $ 27 $ - $ - $ 6 $ 13 December 31, 2017 Commercial Real Estate Total Recorded Commercial All Investment in Commercial Commercial Owner Other Impaired (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Loans Impaired loans with a specific allowance Non-accruing $ 4,516 $ - $ 5,157 $ - $ - $ 9,673 Restructured accruing 1,129 - - - - 1,129 Restructured non-accruing 108 - - 783 - 891 Balance $ 5,753 $ - $ 5,157 $ 783 $ - $ 11,693 Allowance $ 3,220 $ - $ 663 $ 131 $ - $ 4,014 Impaired loans without a specific allowance Non-accruing $ 391 $ - $ 418 $ 1,318 $ - $ 2,127 Restructured accruing 273 - - 496 890 1,659 Restructured non-accruing 1,688 136 - 1,481 2,025 5,330 Balance $ 2,352 $ 136 $ 418 $ 3,295 $ 2,915 $ 9,116 Total impaired loans Non-accruing $ 4,907 $ - $ 5,575 $ 1,318 $ - $ 11,800 Restructured accruing 1,402 - - 496 890 2,788 Restructured non-accruing 1,796 136 - 2,264 2,025 6,221 Balance $ 8,105 $ 136 $ 5,575 $ 4,078 $ 2,915 $ 20,809 Unpaid principal balance in total impaired loans $ 11,263 $ 1,248 $ 10,166 $ 6,331 $ 3,681 $ 32,689 December 31, 2017 Commercial Real Estate Total Recorded Commercial All Investment in Commercial Commercial Owner Other Impaired (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Loans Average impaired loans for the period $ 7,903 $ 137 $ 6,835 $ 5,336 $ 2,968 $ 23,179 Contractual interest income due on impaired loans during the period $ 828 $ 333 $ 669 $ 400 $ 84 Interest income on impaired loans recognized on a cash basis $ 204 $ - $ 24 $ 394 $ 132 Interest income on impaired loans recognized on an accrual basis $ 111 $ - $ - $ 26 $ 32
Credit Quality of Loan Portfolio by Segment	The following tables provide information on the credit quality of the loan portfolio by segment at the dates indicated: March 31, 2018 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Owner Residential Residential (In thousands) Commercial AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Non-performing loans and assets: Non-accrual loans $ 6,634 $ 136 $ 5,813 $ 3,524 $ 3,244 $ 7,063 $ 174 $ 26,588 Loans 90 days past due - - - - 126 - - 126 Restructured loans 1,310 - - 485 - 883 - 2,678 Total non-performing loans 7,944 136 5,813 4,009 3,370 7,946 174 29,392 Other real estate owned - 365 497 400 - 1,499 - 2,761 Total non-performing assets $ 7,944 $ 501 $ 6,310 $ 4,409 $ 3,370 $ 9,445 $ 174 $ 32,153 December 31, 2017 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Owner Residential Residential (In thousands) Commercial AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Non-performing loans and assets: Non-accrual loans $ 6,703 $ 136 $ 5,575 $ 3,582 $ 2,967 $ 7,196 $ 177 $ 26,336 Loans 90 days past due - - - - - 225 - 225 Restructured loans 1,402 - - 496 - 890 - 2,788 Total non-performing loans 8,105 136 5,575 4,078 2,967 8,311 177 29,349 Other real estate owned 39 365 - 400 - 1,449 - 2,253 Total non-performing assets $ 8,144 $ 501 $ 5,575 $ 4,478 $ 2,967 $ 9,760 $ 177 $ 31,602 March 31, 2018 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Owner Residential Residential (In thousands) Commercial AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Past due loans 31-60 days $ 3,834 $ - $ 727 $ 605 $ 2,061 $ 5,648 $ 587 $ 13,462 61-90 days 537 - 249 773 965 3,849 - 6,373 > 90 days - - - - 126 - - 126 Total past due 4,371 - 976 1,378 3,152 9,497 587 19,961 Non-accrual loans 6,634 136 5,813 3,524 3,244 7,063 174 26,588 Loans acquired with deteriorated credit quality 2,268 - 17,573 2,337 1,383 12 - 23,573 Current loans 639,524 564,735 1,904,077 1,167,500 525,194 975,715 214,684 5,991,429 Total loans $ 652,797 $ 564,871 $ 1,928,439 $ 1,174,739 $ 532,973 $ 992,287 $ 215,445 $ 6,061,551 December 31, 2017 Commercial Real Estate Residential Real Estate Commercial Commercial Commercial Owner Residential Residential (In thousands) Commercial AD&C Investor R/E Occupied R/E Consumer Mortgage Construction Total Past due loans 31-60 days $ 587 $ - $ 775 $ 414 $ 2,107 $ 6,100 $ - $ 9,983 61-90 days - - - - 106 3,103 - 3,209 > 90 days - - - - - 225 - 225 Total past due 587 - 775 414 2,213 9,428 - 13,417 Non-accrual loans 6,703 136 5,575 3,582 2,967 7,196 177 26,336 Current loans 490,658 292,307 1,106,360 853,200 450,649 904,811 176,510 4,274,495 Total loans $ 497,948 $ 292,443 $ 1,112,710 $ 857,196 $ 455,829 $ 921,435 $ 176,687 $ 4,314,248
Restructured Loans for Specific Segments of Loan Portfolio	The following table provides the amounts of the restructured loans at the date of restructuring for specific segments of the loan portfolio during the period indicated: For the Three Months Ended March 31, 2018 Commercial Real Estate Commercial All Commercial Commercial Owner Other (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Total Troubled debt restructurings Restructured accruing $ - $ - $ - $ - $ - $ - Restructured non-accruing 14 - - - - 14 Balance $ 14 $ - $ - $ - $ - $ 14 Specific allowance $ 14 $ - $ - $ - $ - $ 14 Restructured and subsequently defaulted $ - $ - $ - $ - $ - $ - For the Year Ended December 31, 2017 Commercial Real Estate Commercial All Commercial Commercial Owner Other (In thousands) Commercial AD&C Investor R/E Occupied R/E Loans Total Troubled debt restructurings Restructured accruing $ 492 $ - $ - $ - $ - $ 492 Restructured non-accruing 1,019 - - 540 - 1,559 Balance $ 1,511 $ - $ - $ 540 $ - $ 2,051 Specific allowance $ 247 $ - $ - $ - $ - $ 247 Restructured and subsequently defaulted $ - $ - $ - $ - $ - $ -
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit Risk Rating Indicators	The following tables provide information by credit risk rating indicators for each segment of the commercial loan portfolio at the dates indicated: March 31, 2018 Commercial Real Estate Commercial Commercial Commercial Owner (In thousands) Commercial AD&C Investor R/E Occupied R/E Total Pass $ 635,564 $ 564,433 $ 1,901,769 $ 1,159,886 $ 4,261,652 Special Mention 2,492 302 3,576 5,262 11,632 Substandard 14,741 136 23,094 9,591 47,562 Doubtful - - - - - Total $ 652,797 $ 564,871 $ 1,928,439 $ 1,174,739 $ 4,320,846 December 31, 2017 Commercial Real Estate Commercial Commercial Commercial Owner (In thousands) Commercial AD&C Investor R/E Occupied R/E Total Pass $ 482,924 $ 292,307 $ 1,103,480 $ 845,102 $ 2,723,813 Special Mention 2,443 - 3,517 5,505 11,465 Substandard 12,581 136 5,713 6,589 25,019 Doubtful - - - - - Total $ 497,948 $ 292,443 $ 1,112,710 $ 857,196 $ 2,760,297
Non Commercial Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit Risk Rating Indicators	Homogeneous loan pools do not have individual loans subjected to internal risk ratings therefore, the credit indicator applied to these pools is based on their delinquency status. The following tables provide information by credit risk rating indicators for those remaining segments of the loan portfolio at the dates indicated: March 31, 2018 Residential Real Estate Residential Residential (In thousands) Consumer Mortgage Construction Total Performing $ 529,603 $ 984,341 $ 215,271 $ 1,729,215 Non-performing: 90 days past due 126 - - 126 Non-accruing 3,244 7,063 174 10,481 Restructured loans - 883 - 883 Total $ 532,973 $ 992,287 $ 215,445 $ 1,740,705 December 31, 2017 Residential Real Estate Residential Residential (In thousands) Consumer Mortgage Construction Total Performing $ 452,862 $ 913,124 $ 176,510 $ 1,542,496 Non-performing: 90 days past due - 225 - 225 Non-accruing 2,967 7,196 177 10,340 Restructured loans - 890 - 890 Total $ 455,829 $ 921,435 $ 176,687 $ 1,553,951

GOODWILL AND OTHER INTANGIBLE30

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)	3 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Gross Carrying Amounts and Accumulated Amortization of Intangible Assets and Goodwill	The gross carrying amounts and accumulated amortization of intangible assets and goodwill are presented at the dates indicated in the following table: March 31, 2018 Weighted December 31, 2017 Weighted Gross Net Average Gross Net Average Carrying Accumulated Carrying Remaining Carrying Accumulated Carrying Remaining (Dollars in thousands) Amount Amortization Amount Life Amount Amortization Amount Life Amortizing intangible assets: Core deposit intangibles $ 10,678 $ (485) $ 10,193 9.8 years $ - $ - $ - - Other identifiable intangibles 1,271 (56) 1,215 11.2 years 786 (206) 580 13.1 years Total amortizing intangible assets $ 11,949 $ (541) $ 11,408 $ 786 $ (206) $ 580 Goodwill $ 342,907 $ 342,907 $ 85,768 $ 85,768
Estimated Future Amortization Expense for Amortizing Intangibles	(In thousands) Amount 2018 $ 1,621 2019 1,944 2020 1,720 2021 1,507 Thereafter 4,616 Total amortizing intangible assets $ 11,408
Net carrying amount of goodwill by segment	Community Investment (Dollars in thousands) Banking Insurance Management Total Balance December 31, 2017 $ 69,991 $ 6,788 $ 8,989 $ 85,768 WashingtonFirst Acquisition 256,940 - 199 257,139 Balance March 31, 2018 $ 326,931 $ 6,788 $ 9,188 $ 342,907

DEPOSITS (Tables)

DEPOSITS (Tables)	3 Months Ended
	Mar. 31, 2018
Deposits [Abstract]
Composition of Deposits	The following table presents the composition of deposits at the dates indicated: (In thousands) March 31, 2018 December 31, 2017 Noninterest-bearing deposits $ 1,767,523 $ 1,264,392 Interest-bearing deposits: Demand 750,899 658,716 Money market savings 1,544,580 1,030,432 Regular savings 357,601 321,171 Time deposits of less than $100,000 378,428 293,201 Time deposits of $100,000 or more 828,175 395,750 Total interest-bearing deposits 3,859,683 2,699,270 Total deposits $ 5,627,206 $ 3,963,662

SUBORDINATED DEBENTURES (Tables

SUBORDINATED DEBENTURES (Tables)	3 Months Ended
	Mar. 31, 2018
Brokers and Dealers [Abstract]
Schedule of subordinated debentures	As of, (In thousands) January 1, 2018 March 31, 2018 Subordinated debentures $ 25,000 $ 25,000 Add: Purchase accounting premium 2,158 2,125 Trust preferred securities 10,310 10,310 Add: Purchase accounting premium 96 95 Total subordinated debentures $ 37,564 $ 37,530

SHARE BASED COMPENSATION (Table

SHARE BASED COMPENSATION (Tables)	3 Months Ended
	Mar. 31, 2018
Share Based Compensation [Abstract]
Fair Values of all Options Granted Estimated Using Binomial Option-Pricing Model with Weighted-average Assumptions	The fair values of all of the options granted for the periods indicated have been estimated using a bino mial option-pricing model. T he weighted-average assumptions for the periods shown are presented in the following tabl e: Three Months Ended March 31, 2018 2017 Dividend yield 2.64 % 2.45 % Weighted average expected volatility 39.13 % 40.27 % Weighted average risk-free interest rate 2.61 % 2.14 % Weighted average expected lives (in years) 5.61 5.67 Weighted average grant-date fair value $11.73 $13.42
Summary of Share Option Activity	A summary of share option activity for the period indicated is reflected in the following table: Weighted Number Weighted Average Aggregate of Average Contractual Intrinsic Common Exercise Remaining Value Shares Share Price Life (Years) (in thousands) Balance at January 1, 2018 87,300 $ 26.22 $ 1,160 Granted 16,212 $ 38.15 Exercised (12,353) $ 18.78 $ 249 Balance at March 31, 2018 91,159 $ 29.35 4.4 $ 904 Exercisable at March 31, 2018 44,462 $ 23.44 2.9 $ 904 Weighted average fair value of options granted during the year $ 11.73
Summary of Activity for Company's Non-Vested Options	A summary of the activity for the Company’s restricted stock for the period indicated is presented in the following table: Number Weighted of Average Common Grant-Date (In dollars, except share data): Shares Fair Value Restricted stock at January 1, 2018 189,035 $ 30.67 Granted 36,003 $ 38.15 Vested (1,514) $ 33.04 Restricted stock at March 31, 2018 223,524 $ 31.86

PENSION, PROFIT SHARING, AND 34

PENSION, PROFIT SHARING, AND OTHER EMPLOYEE BENEFIT PLANS (Tables)	3 Months Ended
	Mar. 31, 2018
Pension, Profit Sharing, and Other Employee Benefit Plans [Abstract]
Net Periodic Benefit Cost	The components of net periodic benefit cost for the periods indicated are presented in the following table: Three Months Ended March 31, (In thousands) 2018 2017 Interest cost on projected benefit obligation $ 385 $ 410 Expected return on plan assets (465) (496) Recognized net actuarial loss 250 295 Net periodic benefit cost $ 170 $ 209

NET INCOME PER COMMON SHARE (Ta

NET INCOME PER COMMON SHARE (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Calculation of Net Income Per Common Share	The calculation of net income per common share for the periods indicated is presented in the following table: Three Months Ended March 31, (Dollars and amounts in thousands, except per share data) 2018 2017 Net income $ 21,665 $ 15,112 Basic: Basic weighted average EPS shares 35,659 24,119 Basic net income per share $ 0.61 $ 0.63 Diluted: Basic weighted average EPS shares 35,659 24,119 Dilutive common stock equivalents 25 40 Dilutive EPS shares 35,684 24,159 Diluted net income per share $ 0.61 $ 0.63 Anti-dilutive shares 4 -

OTHER COMPREHENSIVE INCOME (L36

OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	3 Months Ended
	Mar. 31, 2018
Other Comprehensive Income Loss [Abstract]
Net Accumulated Other Comprehensive Income (Loss)	The following table presents the activity in net accumulated other comprehensive income ( loss) and the components of the activity for the periods indicated: Unrealized Gains (Losses) on Investments Defined Benefit (In thousands) Available-for-Sale Pension Plan Total Balance at January 1, 2018 $ 687 $ (7,544) $ (6,857) Other comprehensive income before reclassification, net of tax (9,368) - (9,368) Reclassifications from accumulated other comprehensive income, net of tax (47) 131 84 Current period change in other comprehensive income, net of tax (9,415) 131 (9,284) Reclassification of tax effects from accumulated other comprehensive income 148 (1,625) (1,477) Balance at March 31, 2018 $ (8,580) $ (9,038) $ (17,618) Unrealized Gains (Losses) on Investments Defined Benefit (In thousands) Available-for-Sale Pension Plan Total Balance at January 1, 2017 $ 1,642 $ (8,256) $ (6,614) Other comprehensive income before reclassification, net of tax 904 - 904 Reclassifications from accumulated other comprehensive income, net of tax (2) 178 176 Current period change in other comprehensive income, net of tax 902 178 1,080 Balance at March 31, 2017 $ 2,544 $ (8,078) $ (5,534)
Schedule of Amounts Recognized in Other Comprehensive Income (Loss)	The following table provides the information on the reclassification adjustments out of accumulated other comprehensive income for the periods indicated: Three Months Ended March 31, (In thousands) 2018 2017 Unrealized gains/(losses) on investments available-for-sale Affected line item in the Statements of Income: Investment securities gains $ 63 $ 2 Income before taxes 63 2 Tax expense 16 - Net income $ 47 $ 2 Amortization of defined benefit pension plan items Affected line item in the Statements of Income: Recognized actuarial loss (1) $ (250) $ (295) Income before taxes (250) (295) Tax benefit (119) (117) Net loss $ (131) $ (178) (1) This amount is included in the computation of net periodic benefit cost, see Note 10

FAIR VALUE (Tables)

FAIR VALUE (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Financial assets and Liabilities at Dates Indicated that were Accounted for at Fair Value	The following tables set forth the Company’s financial assets and liabilities at the dates indicated that were accounted for or disclosed at fair value. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement: March 31, 2018 Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs (In thousands) (Level 1) (Level 2) (Level 3) Total Assets Residential mortgage loans held for sale $ - $ 28,486 $ - $ 28,486 Investments available-for-sale: U.S. government agencies - 208,304 - 208,304 State and municipal - 330,546 - 330,546 Mortgage-backed - 428,144 - 428,144 Corporate debt - - 9,352 9,352 Trust preferred - - 310 310 Marketable equity securities - 568 - 568 Interest rate swap agreements - 574 - 574 Liabilities Interest rate swap agreements $ - $ (574) $ - $ (574) December 31, 2017 Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs (In thousands) (Level 1) (Level 2) (Level 3) Total Assets Residential mortgage loans held for sale $ - $ 9,848 $ - $ 9,848 Investments available-for-sale: U.S. government agencies - 106,568 - 106,568 State and municipal - 312,253 - 312,253 Mortgage-backed - 300,040 - 300,040 Corporate debt - - 9,432 9,432 Trust preferred - - 1,002 1,002 Marketable equity securities - 212 - 212 Interest rate swap agreements - 707 - 707 Liabilities Interest rate swap agreements $ - $ (707) $ - $ (707)
Unrealized Losses Included in Assets Measured in Condensed Consolidated Statements of Condition at Fair Value on a Recurring Basis	The following table provides unrealized losses included in assets measured in the Condensed Consolidated Statements of Condition at fair value on a recurring basis for the period indicated: Significant Unobservable Inputs (In thousands) (Level 3) Investments available-for-sale: Balance at January 1, 2018 $ 10,434 Additions of Level 3 assets 310 Principal sales (1,002) Total unrealized losses included in other comprehensive loss (80) Balance at March 31, 2018 $ 9,662
Assets Measured at Fair Value on Nonrecurring Basis	The following table sets forth the Company’s financial assets subject to fair value adjustments (impairment) on a nonrecurring basis at the date indicated that are valued at the lower of cost or market. Assets are classified in their entirety based on the lowest level of input that is significant to the fair value measurement: March 31, 2018 Quoted Prices in Significant Active Markets Other Significant for Identical Observable Unobservable (In thousands) Assets (Level 1) Inputs (Level 2) Inputs (Level 3) Total Total Losses Impaired loans $ - $ - $ 8,234 $ 8,234 $ (10,749) Other real estate owned - - 2,761 2,761 (54) Total $ - $ - $ 10,995 $ 10,995 $ (10,803) December 31, 2017 Quoted Prices in Significant Active Markets Other Significant for Identical Observable Unobservable (In thousands) Assets (Level 1) Inputs (Level 2) Inputs (Level 3) Total Total Losses Impaired loans $ - $ - $ 8,474 $ 8,474 $ (11,806) Other real estate owned - - 2,253 2,253 (158) Total $ - $ - $ 10,727 $ 10,727 $ (11,964)
Carrying Amounts And Fair Values of Company's Financial Instruments	The carrying amounts and fair values of the Company’s financial instruments at the dates indicated are presented in the following table: Fair Value Measurements March 31, 2018 Quoted Prices in Estimated Active Markets for Significant Other Significant Carrying Fair Identical Assets Observable Inputs Unobservable Inputs (In thousands) Amount Value (Level 1) (Level 2) (Level 3) Financial Assets Other equity securities $ 63,115 $ 63,115 $ - $ 63,115 $ - Loans, net of allowance 6,014,620 6,043,115 - - 6,043,115 Other assets 108,839 108,839 - 108,839 - Financial Liabilities Time deposits $ 1,206,603 $ 1,222,469 $ - $ 1,222,469 $ - Securities sold under retail repurchase agreements and federal funds purchased 149,323 149,323 - 149,323 - Advances from FHLB 1,011,109 1,012,398 - 1,012,398 - Subordinated debentures 37,530 37,530 - - 37,530 Fair Value Measurements December 31, 2017 Quoted Prices in Estimated Active Markets for Significant Other Significant Carrying Fair Identical Assets Observable Inputs Unobservable Inputs (In thousands) Amount Value (Level 1) (Level 2) (Level 3) Financial Assets Other equity securities $ 45,518 $ 45,518 $ - $ 45,518 $ - Loans, net of allowance 4,268,991 4,320,719 - - 4,320,719 Other assets 95,730 95,730 - 95,730 - Financial Liabilities Time deposits $ 688,951 $ 684,139 $ - $ 684,139 $ - Securities sold under retail repurchase agreements and federal funds purchased 119,359 119,359 - 119,359 - Advances from FHLB 765,833 769,860 - 769,860 - Subordinated debentures - - - - -

SEGMENT REPORTING (Tables)

SEGMENT REPORTING (Tables)	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Operating Segments and Reconciliation of Information to Condensed Consolidated Financial Statements	Information for the operating segments and reconciliation of the information to the condensed consolidated financial statements for the periods indicated is presented in the following tables: Three Months Ended March 31, 2018 Community Investment Inter-Segment (In thousands) Banking Insurance Mgmt. Elimination Total Interest income $ 75,504 $ - $ 1 $ (1) $ 75,504 Interest expense 12,614 - - (1) 12,613 Provision for loan losses 1,997 - - - 1,997 Noninterest income 13,171 1,822 2,279 (154) 17,118 Noninterest expense 47,031 1,379 1,385 (154) 49,641 Income before income taxes 27,033 443 895 - 28,371 Income tax expense 6,353 123 230 - 6,706 Net income $ 20,680 $ 320 $ 665 $ - $ 21,665 Assets $ 7,894,964 $ 8,984 $ 16,216 $ (25,246) $ 7,894,918 Three Months Ended March 31, 2017 Community Investment Inter-Segment (In thousands) Banking Insurance Mgmt. Elimination Total Interest income $ 45,957 $ 1 $ 2 $ (2) $ 45,958 Interest expense 5,707 - - (2) 5,705 Provision for loan losses 194 - - - 194 Non-interest income 9,086 1,752 2,003 (209) 12,632 Non-interest expense 27,799 1,355 1,036 (209) 29,981 Income before income taxes 21,343 398 969 - 22,710 Income tax expense 7,060 161 377 - 7,598 Net income $ 14,283 $ 237 $ 592 $ - $ 15,112 Assets $ 5,202,560 $ 8,066 $ 14,577 $ (24,039) $ 5,201,164

SIGNIFICANT ACCOUNTING POLICI39

SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)Number_Of_OfficesNumber_Of_Centres
Property, Plant and Equipment [Line Items]
Number Of Community Offices | Number_Of_Offices	55
Number of Financial Centres | Number_Of_Centres	6
Income tax effects from OCI to retained earnings | $	$ 1,477

ACQUISITION OF WASHINGTONFIRS40

ACQUISITION OF WASHINGTONFIRST BANKSHARES INC (Details) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)Number_Of_Officesshares	Jan. 01, 2018	Dec. 27, 2017$ / shares
Business Acquisition [Line Items]
Transaction value, business combination	$ 446,650
Share Price | $ / shares			$ 39.02
Number of shares issued by the company, pursuant to WashingtonFirst acquisition | shares	11,446,197
Assets acquired	$ 2,101,171
Provisional amount of goodwill recognized	$ 257,139
WashingtonFirst Bankshares Inc [Member]
Business Acquisition [Line Items]
Number of Banking Offices | Number_Of_Offices	19
WashingtonFirst Bankshares Inc [Member] | Sandy Spring Shareholders [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired, combined co.		67.70%
WashingtonFirst Bankshares Inc [Member] | WashingtonFirst Shareholders [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired, combined co.		32.30%

ACQUISITION OF WASHINGTONFIRS41

ACQUISITION OF WASHINGTONFIRST BANKSHARES INC -acquired assets liabilities (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Purchase price:
Fair value of common share issue (11,446,197 shares), based on Sandy Spring's share price of $36.02	$ 446,640
Cash for fractional shares	10
Total purchase price	446,650
Identifiable assets and liabilities:
Cash and cash equivalents	32,497
Residential mortgage loans held for sale	25,789
Investment securities	302,321
Loans	1,683,683
Premises and equipment	4,602
Other Real Estate Owned	497
Accrued Interest Receivable	6,648
Other Intangible assets	11,370
Other Assets	33,764
Total identifiable assets	2,101,171
Deposits	1,610,327
Other Liabilities	283,808
Borrowings	17,525
Total identifiable liabilities	1,911,660
Provisional fair value of net assets acquired including identifiable intangible assets	189,511
Provisional resulting goodwill	$ 257,139

INVESTMENTS (Additional Informa

INVESTMENTS (Additional Information) (Detail) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Investment [Line Items]
Investments available-for-sale book value	$ 649.3	$ 431.7
Government National Mortgage Association Certificates And Obligations Federal National Mortgage Association Certificates And Obligations And Federal Home Loan Mortgage Corporation Certificates And Obligations [Member] | Collateralized Mortgage Obligations [Member]
Investment [Line Items]
Financial Instruments, Owned, Mortgages, Mortgage-backed and Asset-backed Securities, at Fair Value	155
Government National Mortgage Association Certificates And Obligations Federal National Mortgage Association Certificates And Obligations And Federal Home Loan Mortgage Corporation Certificates And Obligations [Member] | Mortgage Backed Securities [Member]
Investment [Line Items]
Financial Instruments, Owned, Mortgages, Mortgage-backed and Asset-backed Securities, at Fair Value	$ 273.1

INVESTMENTS (Amortized Cost and

INVESTMENTS (Amortized Cost and Estimated Fair Values of Investments Available-for-sale) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 988,833	$ 728,365
Gross Unrealized Gains	5,091	8,301
Gross Unrealized Losses	(16,700)	(7,159)
Estimated Fair Value	977,224	729,507
Marketable Equity Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	568	212
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	568	212
Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	988,265	728,153
Gross Unrealized Gains	5,091	8,301
Gross Unrealized Losses	(16,700)	(7,159)
Estimated Fair Value	976,656	729,295
Debt Securities | U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	213,734	109,349
Gross Unrealized Gains	1	0
Gross Unrealized Losses	(5,431)	(2,781)
Estimated Fair Value	208,304	106,568
Debt Securities | State and municipal
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	328,324	306,109
Gross Unrealized Gains	3,918	6,313
Gross Unrealized Losses	(1,696)	(169)
Estimated Fair Value	330,546	312,253
Debt Securities | Mortgage-Backed
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	436,797	302,664
Gross Unrealized Gains	920	1,585
Gross Unrealized Losses	(9,573)	(4,209)
Estimated Fair Value	428,144	300,040
Debt Securities | Corporate Debt
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	9,100	9,100
Gross Unrealized Gains	252	332
Gross Unrealized Losses	0	0
Estimated Fair Value	9,352	9,432
Debt Securities | Trust Preferred
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	310	931
Gross Unrealized Gains	0	71
Gross Unrealized Losses	0	0
Estimated Fair Value	$ 310	$ 1,002

INVESTMENTS (Gross Unrealized L

INVESTMENTS (Gross Unrealized Losses and Fair Value by Length of Time of Available-For-Sale Securities) (Detail) $ in Thousands	Mar. 31, 2018USD ($)Securities	Dec. 31, 2017USD ($)Securities
Schedule Of Available For Sale Securities [Line Items]
Number of Securities | Securities	312	79
Fair Value	$ 709,802	$ 346,417
Less than 12 months	7,338	1,054
More than 12 months	9,362	6,105
Total Unrealized Losses	$ 16,700	$ 7,159
Us Government Agencies Debt Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Number of Securities | Securities	57	13
Fair Value	$ 206,828	$ 106,568
Less than 12 months	2,208	545
More than 12 months	3,223	2,236
Total Unrealized Losses	$ 5,431	$ 2,781
U S States and Political Subdivisions [Member]
Schedule Of Available For Sale Securities [Line Items]
Number of Securities | Securities	116	20
Fair Value	$ 109,344	$ 18,228
Less than 12 months	1,652	107
More than 12 months	44	62
Total Unrealized Losses	$ 1,696	$ 169
Mortgage Backed Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Number of Securities | Securities	139	46
Fair Value	$ 393,630	$ 221,621
Less than 12 months	3,478	402
More than 12 months	6,095	3,807
Total Unrealized Losses	$ 9,573	$ 4,209
Trust Preferred Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Number of Securities | Securities	0	0
Fair Value	$ 0	$ 0
Less than 12 months	0	0
More than 12 months	0	0
Total Unrealized Losses	$ 0	$ 0

INVESTMENTS (Amortized Cost a45

INVESTMENTS (Amortized Cost and Estimated Fair Values of investment securities Available-For-Sale by Contractual Maturity) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Amortized Cost
Due in one year or less	$ 40,224	$ 12,789
Due after one year through five years	265,558	180,109
Due after five years through ten years	278,570	228,484
Due after ten years	403,913	306,771
Total debt securities available for sale	988,265	728,153
Estimated Fair Value
Due in one year or less	40,564	12,889
Due after one year through five years	267,383	184,264
Due after five years through ten years	273,027	227,688
Due after ten years	395,682	304,454
Estimated Fair Value	$ 976,656	$ 729,295

INVESTMENTS (Other Equity Secur

INVESTMENTS (Other Equity Securities) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other Securities Owned [Line Items]
Federal Reserve Bank stock	$ 13,349	$ 8,398
Total equity securities	63,115	45,518
Atlantic Central Bankers Bank Stock
Other Securities Owned [Line Items]
Federal Home Loan Bank of Atlanta stock	$ 49,766	$ 37,120

LOANS AND LEASES (Additional In

LOANS AND LEASES (Additional Information) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Loans and Leases [Abstract]
Unearned income and deferred fees	$ 0		$ 0
Loans receivable with a gross amortized cost basis		$ 1,697,760
Credit fair value adjustment on purchased credit impaired loans		7,247
Certain Loans Acquired In Transfer Accretable Yield		2,511
Credit Impaired Loans Acquired In Transfer Nonaccretable Difference		0
Outstanding balance of purchased credit impaired loans receivable	0	0
Fair value of purchase credit impaired loans	$ 0	$ 16,964

LOANS AND LEASES (Loan Portfoli

LOANS AND LEASES (Loan Portfolio Segment Balances) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 6,061,551	$ 4,314,248
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	652,797	497,948
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	532,973	455,829
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,174,739	857,196
Commercial Real Estate Portfolio Segment [Member] | Commercial Investor Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,928,439	1,112,710
Commercial Real Estate Portfolio Segment [Member] | Commercial Acquisition, Development and Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	564,871	292,443
Residential Portfolio Segment [Member] | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	992,287	921,435
Residential Portfolio Segment [Member] | Residential Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 215,445	$ 176,687

LOANS AND LEASES (Acquired loan

LOANS AND LEASES (Acquired loan portfolio) (Detail) $ in Thousands	Jan. 01, 2018USD ($)
Loans and Leases [Abstract]
Gross amortized cost basis at January 1, 2018	$ 1,697,760
Interest rate fair value adjustment	15,591
Credit fair value adjustment on pools of homogeneous loans	(22,421)
Credit fair value adjustment on purchased credit impaired loans	(7,247)
Fair value of acquired loan portfolio	$ 1,683,683

LOANS AND LEASES (Acquired cred

LOANS AND LEASES (Acquired credit impaired loans receivable) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period [Abstract]
Contractual principal and interest at acquisition		$ 28,502
Contractual cash flows not expected to be collected (Nonaccretable yield)		(9,027)
Expected cash flows at acquisition		19,475
Interest component of expected cash flows (Accretable yield)		(2,511)
Fair value of purchase credit impaired loans	$ 0	$ 16,964

LOANS AND LEASES (Accretable yi

LOANS AND LEASES (Accretable yield activity) (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Activity for the accretable yield since the Acquisition Date:
Accretable yield at the beginning of the period	$ 0
Addition of accretable yield due to acquisitions	2,511
Accretion into interest income	(341)
Accretable yield at the end of the period	$ 2,170

CREDIT QUALITY ASSESSMENT (Addi

CREDIT QUALITY ASSESSMENT (Additional Information) (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Troubled Debt Restructurings Specific Allowance	$ 14	$ 247
Other real estate owned	2,761	2,253
Additional Financing Receivable Troubled Debt Restructurings Restructured	0	2,100
Mortgage Loans in Process of Foreclosure, Amount	0
Restructured Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable Troubled Debt Restructurings Specific Allowance	$ 0	$ 200

CREDIT QUALITY ASSESSMENT (Summ

CREDIT QUALITY ASSESSMENT (Summary Information on Allowance for Loan and Lease Loss Activity) (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Credit Quality Assessment [Abstract]
Balance at beginning of year	$ 45,257	$ 44,067	$ 44,067
Provision for loan losses	1,997	194	2,977
Loan and lease charge-offs	(477)	(482)	(2,566)
Loan and lease recoveries	154	82	779
Net charge-offs	(323)	(400)	(1,787)
Balance at period end	$ 46,931	$ 43,861	$ 45,257

CREDIT QUALITY ASSESSMENT (Acti

CREDIT QUALITY ASSESSMENT (Activity in Allowance for Loan and Lease Losses by Respective Loan Portfolio Segment) (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of year	$ 45,257	$ 44,067	$ 44,067
Provision (credit)	1,997	194	2,977
Charge-offs	(477)	(482)	(2,566)
Recoveries	154	82	779
Net charge-offs	(323)	(400)	(1,787)
Balance at period end	46,931	43,861	45,257
Total loans and leases	$ 6,061,551		$ 4,314,248
Allowance for loans and leases to total loans and leases ratio	0.77%		1.05%
Balance of loans specifically evaluated for impairment	$ 20,793		$ 20,809
Allowance for loans specifically evaluated for impairment	$ 4,479		$ 4,014
Specific allowance to specific loans ratio	21.54%		19.29%
Balance of loans collectively evaluated	$ 6,040,758		$ 4,293,439
Allowance for loans collectively evaluated	$ 42,452		$ 41,243
Collective allowance to collective loans ratio	0.70%		0.96%
Commercial
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of year	$ 8,711	7,539	$ 7,539
Provision (credit)	415		2,616
Charge-offs	(331)		(1,538)
Recoveries	9		94
Net charge-offs	(322)		(1,444)
Balance at period end	8,804		8,711
Total loans and leases	$ 652,797		$ 497,948
Allowance for loans and leases to total loans and leases ratio	1.35%		1.75%
Balance of loans specifically evaluated for impairment	$ 7,944		$ 8,105
Allowance for loans specifically evaluated for impairment	$ 3,096		$ 3,220
Specific allowance to specific loans ratio	38.97%		39.73%
Balance of loans collectively evaluated	$ 644,853		$ 489,843
Allowance for loans collectively evaluated	$ 5,708		$ 5,491
Collective allowance to collective loans ratio	0.89%		1.12%
Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of year	$ 2,383	2,828	$ 2,828
Provision (credit)	226		(57)
Charge-offs	(146)		(693)
Recoveries	47		305
Net charge-offs	(99)		(388)
Balance at period end	2,510		2,383
Total loans and leases	$ 532,973		$ 455,829
Allowance for loans and leases to total loans and leases ratio	0.47%		0.52%
Balance of loans collectively evaluated	$ 532,973		$ 455,829
Allowance for loans collectively evaluated	$ 2,510		$ 2,383
Collective allowance to collective loans ratio	0.47%		0.52%
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of year	$ 3,501	4,652	$ 4,652
Provision (credit)	254		(1,254)
Charge-offs	0		0
Recoveries	62		103
Net charge-offs	62		103
Balance at period end	3,817		3,501
Total loans and leases	$ 564,871		$ 292,443
Allowance for loans and leases to total loans and leases ratio	0.68%		1.20%
Balance of loans specifically evaluated for impairment	$ 136		$ 136
Allowance for loans specifically evaluated for impairment	$ 0		$ 0
Specific allowance to specific loans ratio	0.00%		0.00%
Balance of loans collectively evaluated	$ 564,735		$ 292,307
Allowance for loans collectively evaluated	$ 3,817		$ 3,501
Collective allowance to collective loans ratio	0.68%		1.20%
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of year	$ 14,970	12,939	$ 12,939
Provision (credit)	1,102		1,930
Charge-offs	0		0
Recoveries	8		101
Net charge-offs	8		101
Balance at period end	16,080		14,970
Total loans and leases	$ 1,928,439		$ 1,112,710
Allowance for loans and leases to total loans and leases ratio	0.83%		1.35%
Balance of loans specifically evaluated for impairment	$ 5,813		$ 5,575
Allowance for loans specifically evaluated for impairment	$ 1,255		$ 663
Specific allowance to specific loans ratio	21.59%		11.89%
Balance of loans collectively evaluated	$ 1,922,626		$ 1,107,135
Allowance for loans collectively evaluated	$ 14,825		$ 14,307
Collective allowance to collective loans ratio	0.77%		1.29%
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of year	$ 7,178	7,885	$ 7,885
Provision (credit)	(172)		(459)
Charge-offs	0		(248)
Recoveries	0		0
Net charge-offs	0		(248)
Balance at period end	7,006		7,178
Total loans and leases	$ 1,174,739		$ 857,196
Allowance for loans and leases to total loans and leases ratio	0.60%		0.84%
Balance of loans specifically evaluated for impairment	$ 4,009		$ 4,078
Allowance for loans specifically evaluated for impairment	$ 128		$ 131
Specific allowance to specific loans ratio	3.19%		3.21%
Balance of loans collectively evaluated	$ 1,170,730		$ 853,118
Allowance for loans collectively evaluated	$ 6,878		$ 7,047
Collective allowance to collective loans ratio	0.59%		0.83%
Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of year	$ 7,268	7,261	$ 7,261
Provision (credit)	(190)		(56)
Charge-offs	0		(87)
Recoveries	22		150
Net charge-offs	22		63
Balance at period end	7,100		7,268
Total loans and leases	$ 992,287		$ 921,435
Allowance for loans and leases to total loans and leases ratio	0.72%		0.79%
Balance of loans specifically evaluated for impairment	$ 2,891		$ 2,915
Allowance for loans specifically evaluated for impairment	0		0
Balance of loans collectively evaluated	989,396		918,520
Allowance for loans collectively evaluated	$ 7,100		$ 7,268
Collective allowance to collective loans ratio	0.72%		0.79%
Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of year	$ 1,246	$ 963	$ 963
Provision (credit)	362		257
Charge-offs	0		0
Recoveries	6		26
Net charge-offs	6		26
Balance at period end	1,614		1,246
Total loans and leases	$ 215,445		$ 176,687
Allowance for loans and leases to total loans and leases ratio	0.75%		0.71%
Balance of loans specifically evaluated for impairment	$ 0		$ 0
Allowance for loans specifically evaluated for impairment	0		0
Balance of loans collectively evaluated	215,445		176,687
Allowance for loans collectively evaluated	$ 1,614		$ 1,246
Collective allowance to collective loans ratio	0.75%		0.71%

CREDIT QUALITY ASSESSMENT (Su55

CREDIT QUALITY ASSESSMENT (Summary of Impaired Loans) (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Credit Quality Assessment [Abstract]
Impaired loans with a specific allowance	$ 11,446	$ 11,693
Impaired loans without a specific allowance	9,347	9,116
Total impaired loans	20,793	20,809
Allowance for loan and lease losses related to impaired loans	4,479	4,014
Allowance for loan and lease losses related to loans collectively evaluated	42,452	41,243
Total allowance for loan and lease losses	46,931	45,257
Average impaired loans for the period	20,802	23,179
Contractual interest income due on impaired loans during the period	649	2,314
Interest income on impaired loans recognized on a cash basis	111	754
Interest income on impaired loans recognized on an accrual basis	$ 46	$ 169

CREDIT QUALITY ASSESSMENT (Reco

CREDIT QUALITY ASSESSMENT (Recorded Investment with Respect to Impaired loans, Associated Allowance by Applicable Portfolio Segment and Principal Balance of Impaired Loans prior to Amounts Charged-off) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	$ 11,446	$ 11,693
Impaired loans without a specific allowance	9,347	9,116
Impaired loans	20,793	20,809
Impaired Financing Receivable, Related Allowance	4,479	4,014
Unpaid principal balance in total impaired loans	32,618	32,689
Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0
Impaired loans	0
Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	9,692	9,673
Impaired loans without a specific allowance	2,264	2,127
Impaired loans	11,956	11,800
Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	863	1,129
Impaired loans without a specific allowance	1,815	1,659
Impaired loans	2,678	2,788
Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	891	891
Impaired loans without a specific allowance	5,268	5,330
Impaired loans	6,159	6,221
Commercial
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	5,508	5,753
Impaired loans without a specific allowance	2,436	2,352
Impaired loans	7,944	8,105
Impaired Financing Receivable, Related Allowance	3,096	3,220
Unpaid principal balance in total impaired loans	11,003	11,263
Commercial | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0
Impaired loans	0
Commercial | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	4,534	4,516
Impaired loans without a specific allowance	317	391
Impaired loans	4,851	4,907
Commercial | Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	863	1,129
Impaired loans without a specific allowance	447	273
Impaired loans	1,310	1,402
Commercial | Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	111	108
Impaired loans without a specific allowance	1,672	1,688
Impaired loans	1,783	1,796
All Other
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	2,891	2,915
Impaired loans	2,891	2,915
Impaired Financing Receivable, Related Allowance	0	0
Unpaid principal balance in total impaired loans	3,667	3,681
All Other | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0
Impaired loans	0
All Other | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	0	0
Impaired loans	0	0
All Other | Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	883	890
Impaired loans	883	890
All Other | Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	2,008	2,025
Impaired loans	2,008	2,025
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	136	136
Impaired loans	136	136
Impaired Financing Receivable, Related Allowance	0	0
Unpaid principal balance in total impaired loans	1,248	1,248
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0
Impaired loans	0
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	0	0
Impaired loans	0	0
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction | Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	0	0
Impaired loans	0	0
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction | Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	136	136
Impaired loans	136	136
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	5,158	5,157
Impaired loans without a specific allowance	655	418
Impaired loans	5,813	5,575
Impaired Financing Receivable, Related Allowance	1,255	663
Unpaid principal balance in total impaired loans	10,401	10,166
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0
Impaired loans	0
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	5,158	5,157
Impaired loans without a specific allowance	655	418
Impaired loans	5,813	5,575
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate | Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	0	0
Impaired loans	0	0
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate | Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	0	0
Impaired loans	0	0
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	780	783
Impaired loans without a specific allowance	3,229	3,295
Impaired loans	4,009	4,078
Impaired Financing Receivable, Related Allowance	128	131
Unpaid principal balance in total impaired loans	6,299	6,331
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0
Impaired loans	0
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	1,292	1,318
Impaired loans	1,292	1,318
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate | Restructuring | Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	0	0
Impaired loans without a specific allowance	485	496
Impaired loans	485	496
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate | Restructuring | Non Accrual Loans
Financing Receivable Impaired [Line Items]
Impaired loans with a specific allowance	780	783
Impaired loans without a specific allowance	1,452	1,481
Impaired loans	$ 2,232	$ 2,264

CREDIT QUALITY ASSESSMENT (Impa

CREDIT QUALITY ASSESSMENT (Impaired Loans by Portfolio) (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	$ 20,802	$ 23,179
Contractual interest income due on impaired loans during the period	649	2,314
Interest income on impaired loans recognized on a cash basis	111	754
Interest income on impaired loans recognized on an accrual basis	46	169
Commercial
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	8,025	7,903
Contractual interest income due on impaired loans during the period	256	828
Interest income on impaired loans recognized on a cash basis	51	204
Interest income on impaired loans recognized on an accrual basis	27	111
All Other
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	2,903	2,968
Contractual interest income due on impaired loans during the period	43	84
Interest income on impaired loans recognized on a cash basis	12	132
Interest income on impaired loans recognized on an accrual basis	13	32
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	136	137
Contractual interest income due on impaired loans during the period	89	333
Interest income on impaired loans recognized on a cash basis	0	0
Interest income on impaired loans recognized on an accrual basis	0	0
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	5,694	6,835
Contractual interest income due on impaired loans during the period	156	669
Interest income on impaired loans recognized on a cash basis	4	24
Interest income on impaired loans recognized on an accrual basis	0	0
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Impaired [Line Items]
Average impaired loans for the period	4,044	5,336
Contractual interest income due on impaired loans during the period	105	400
Interest income on impaired loans recognized on a cash basis	44	394
Interest income on impaired loans recognized on an accrual basis	$ 6	$ 26

CREDIT QUALITY ASSESSMENT (Cred

CREDIT QUALITY ASSESSMENT (Credit Quality of Loan Portfolio by Segment) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	$ 26,588	$ 26,336
Loans 90 days past due	126	225
Restructured loans	2,678	2,788
Total non-performing loans	29,392	29,349
Other real estate owned	2,761	2,253
Total non-performing assets	32,153	31,602
Commercial
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	6,634	6,703
Loans 90 days past due	0	0
Restructured loans	1,310	1,402
Total non-performing loans	7,944	8,105
Other real estate owned	0	39
Total non-performing assets	7,944	8,144
Consumer
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	3,244	2,967
Loans 90 days past due	126	0
Restructured loans	0	0
Total non-performing loans	3,370	2,967
Other real estate owned	0	0
Total non-performing assets	3,370	2,967
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	136	136
Loans 90 days past due	0	0
Restructured loans	0	0
Total non-performing loans	136	136
Other real estate owned	365	365
Total non-performing assets	501	501
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	5,813	5,575
Loans 90 days past due	0	0
Restructured loans	0	0
Total non-performing loans	5,813	5,575
Other real estate owned	497	0
Total non-performing assets	6,310	5,575
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	3,524	3,582
Loans 90 days past due	0	0
Restructured loans	485	496
Total non-performing loans	4,009	4,078
Other real estate owned	400	400
Total non-performing assets	4,409	4,478
Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	7,063	7,196
Loans 90 days past due	0	225
Restructured loans	883	890
Total non-performing loans	7,946	8,311
Other real estate owned	1,499	1,449
Total non-performing assets	9,445	9,760
Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Recorded Investment [Line Items]
Non-accrual loans	174	177
Loans 90 days past due	0	0
Restructured loans	0	0
Total non-performing loans	174	177
Other real estate owned	0	0
Total non-performing assets	$ 174	$ 177

CREDIT QUALITY ASSESSMENT (Cr59

CREDIT QUALITY ASSESSMENT (Credit Quality of Loan Portfolio) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	$ 19,961	$ 13,417
Non-accrual loans	26,588	26,336
Loans aquired with deteriorated credit quality	23,573
Current loans	5,991,429	4,274,495
Total loans	6,061,551	4,314,248
Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	4,371	587
Non-accrual loans	6,634	6,703
Loans aquired with deteriorated credit quality	2,268
Current loans	639,524	490,658
Total loans	652,797	497,948
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	3,152	2,213
Non-accrual loans	3,244	2,967
Loans aquired with deteriorated credit quality	1,383
Current loans	525,194	450,649
Total loans	532,973	455,829
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
Non-accrual loans	136	136
Loans aquired with deteriorated credit quality	0
Current loans	564,735	292,307
Total loans	564,871	292,443
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	976	775
Non-accrual loans	5,813	5,575
Loans aquired with deteriorated credit quality	17,573
Current loans	1,904,077	1,106,360
Total loans	1,928,439	1,112,710
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,378	414
Non-accrual loans	3,524	3,582
Loans aquired with deteriorated credit quality	2,337
Current loans	1,167,500	853,200
Total loans	1,174,739	857,196
Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	9,497	9,428
Non-accrual loans	7,063	7,196
Loans aquired with deteriorated credit quality	12
Current loans	975,715	904,811
Total loans	992,287	921,435
Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	587	0
Non-accrual loans	174	177
Loans aquired with deteriorated credit quality	0
Current loans	214,684	176,510
Total loans	215,445	176,687
31-60 days
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	13,462	9,983
31-60 days | Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	3,834	587
31-60 days | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	2,061	2,107
31-60 days | Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
31-60 days | Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	727	775
31-60 days | Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	605	414
31-60 days | Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	5,648	6,100
31-60 days | Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	587	0
61-90 days
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	6,373	3,209
61-90 days | Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	537	0
61-90 days | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	965	106
61-90 days | Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
61-90 days | Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	249	0
61-90 days | Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	773	0
61-90 days | Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	3,849	3,103
61-90 days | Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	126	225
> 90 days | Commercial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	126	0
> 90 days | Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days | Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days | Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
> 90 days | Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	225
> 90 days | Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	$ 0	$ 0

CREDIT QUALITY ASSESSMENT (Cr60

CREDIT QUALITY ASSESSMENT (Credit Risk Rating Indicators for Each Segment of Commercial Loan Portfolio) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 6,061,551	$ 4,314,248
Commercial
Financing Receivable Recorded Investment [Line Items]
Total loans	652,797	497,948
Commercial Portfolio Segment [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	4,320,846	2,760,297
Commercial Portfolio Segment [Member] | Commercial
Financing Receivable Recorded Investment [Line Items]
Total loans	652,797	497,948
Commercial Portfolio Segment [Member] | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	4,261,652	2,723,813
Commercial Portfolio Segment [Member] | Pass | Commercial
Financing Receivable Recorded Investment [Line Items]
Total loans	635,564	482,924
Commercial Portfolio Segment [Member] | Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans	11,632	11,465
Commercial Portfolio Segment [Member] | Special Mention | Commercial
Financing Receivable Recorded Investment [Line Items]
Total loans	2,492	2,443
Commercial Portfolio Segment [Member] | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	47,562	25,019
Commercial Portfolio Segment [Member] | Substandard | Commercial
Financing Receivable Recorded Investment [Line Items]
Total loans	14,741	12,581
Commercial Portfolio Segment [Member] | Doubtful
Financing Receivable Recorded Investment [Line Items]
Total loans	0	0
Commercial Portfolio Segment [Member] | Doubtful | Commercial
Financing Receivable Recorded Investment [Line Items]
Total loans	0	0
Commercial Real Estate Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment [Line Items]
Total loans	564,871	292,443
Commercial Real Estate Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans	1,928,439	1,112,710
Commercial Real Estate Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans	1,174,739	857,196
Commercial Real Estate Portfolio Segment | Pass | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment [Line Items]
Total loans	564,433	292,307
Commercial Real Estate Portfolio Segment | Pass | Commercial Investor Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans	1,901,769	1,103,480
Commercial Real Estate Portfolio Segment | Pass | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans	1,159,886	845,102
Commercial Real Estate Portfolio Segment | Special Mention | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment [Line Items]
Total loans	302	0
Commercial Real Estate Portfolio Segment | Special Mention | Commercial Investor Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans	3,576	3,517
Commercial Real Estate Portfolio Segment | Special Mention | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans	5,262	5,505
Commercial Real Estate Portfolio Segment | Substandard | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment [Line Items]
Total loans	136	136
Commercial Real Estate Portfolio Segment | Substandard | Commercial Investor Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans	23,094	5,713
Commercial Real Estate Portfolio Segment | Substandard | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans	9,591	6,589
Commercial Real Estate Portfolio Segment | Doubtful | Commercial Acquisition, Development and Construction
Financing Receivable Recorded Investment [Line Items]
Total loans	0	0
Commercial Real Estate Portfolio Segment | Doubtful | Commercial Investor Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans	0	0
Commercial Real Estate Portfolio Segment | Doubtful | Commercial Owner Occupied Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 0	$ 0

CREDIT QUALITY ASSESSMENT (Info

CREDIT QUALITY ASSESSMENT (Information by Credit Risk Rating Indicators for Those Remaining Segments of Loan Portfolio) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	$ 6,061,551	$ 4,314,248
Consumer
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	532,973	455,829
Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	992,287	921,435
Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	215,445	176,687
Homogeneous Loan Pools
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,740,705	1,553,951
Homogeneous Loan Pools | Consumer
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	532,973	455,829
Homogeneous Loan Pools | Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	992,287	921,435
Homogeneous Loan Pools | Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	215,445	176,687
Homogeneous Loan Pools | Performing Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,729,215	1,542,496
Homogeneous Loan Pools | Performing Financing Receivable | Consumer
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	529,603	452,862
Homogeneous Loan Pools | Performing Financing Receivable | Residential Real Estate Portfolio Segment | Residential Mortgage
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	984,341	913,124
Homogeneous Loan Pools | Performing Financing Receivable | Residential Real Estate Portfolio Segment | Residential Construction
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	215,271	176,510
Homogeneous Loan Pools | Nonperforming Financing Receivable | Loans 90 Days Or More Past Due
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	126	225
Homogeneous Loan Pools | Nonperforming Financing Receivable | Non Accrual Loans
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	10,481	10,340
Homogeneous Loan Pools | Nonperforming Financing Receivable | Restructured Loans
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	883	890
Homogeneous Loan Pools | Nonperforming Financing Receivable | Consumer | Loans 90 Days Or More Past Due
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	126	0
Homogeneous Loan Pools | Nonperforming Financing Receivable | Consumer | Non Accrual Loans
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	3,244	2,967
Homogeneous Loan Pools | Nonperforming Financing Receivable | Consumer | Restructured Loans
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	0	0
Homogeneous Loan Pools | Nonperforming Financing Receivable | Residential Real Estate Portfolio Segment | Residential Mortgage | Loans 90 Days Or More Past Due
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	0	225
Homogeneous Loan Pools | Nonperforming Financing Receivable | Residential Real Estate Portfolio Segment | Residential Mortgage | Non Accrual Loans
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	7,063	7,196
Homogeneous Loan Pools | Nonperforming Financing Receivable | Residential Real Estate Portfolio Segment | Residential Mortgage | Restructured Loans
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	883	890
Homogeneous Loan Pools | Nonperforming Financing Receivable | Residential Real Estate Portfolio Segment | Residential Construction | Loans 90 Days Or More Past Due
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	0	0
Homogeneous Loan Pools | Nonperforming Financing Receivable | Residential Real Estate Portfolio Segment | Residential Construction | Non Accrual Loans
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	174	177
Homogeneous Loan Pools | Nonperforming Financing Receivable | Residential Real Estate Portfolio Segment | Residential Construction | Restructured Loans
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	$ 0	$ 0

CREDIT QUALITY ASSESSMENT (Trou

CREDIT QUALITY ASSESSMENT (Troubled Debt Restructured Loans for Specific Segments of the Loan Portfolio) (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable Modifications [Line Items]
Restructured accruing	$ 0	$ 492
Restructured non-accruing	14	1,559
Balance	14	2,051
Specific allowance	14	247
Restructured and subsequently defaulted	0	0
Commercial
Financing Receivable Modifications [Line Items]
Restructured accruing	0	492
Restructured non-accruing	14	1,019
Balance	14	1,511
Specific allowance	14	247
Restructured and subsequently defaulted	0	0
All Other
Financing Receivable Modifications [Line Items]
Restructured accruing	0	0
Restructured non-accruing	14	0
Balance	14	0
Specific allowance	0	0
Restructured and subsequently defaulted	0	0
Troubled Debt Restructuring | Commercial
Financing Receivable Modifications [Line Items]
Specific allowance		247
Restructured and subsequently defaulted		0
Troubled Debt Restructuring | All Other
Financing Receivable Modifications [Line Items]
Specific allowance		0
Restructured and subsequently defaulted		0
Commercial Portfolio Segment | Commercial Acquisition, Development and Construction
Financing Receivable Modifications [Line Items]
Restructured accruing	0	0
Restructured non-accruing	0	0
Balance	0	0
Specific allowance	0	0
Restructured and subsequently defaulted	0	0
Commercial Portfolio Segment | Commercial Investor Real Estate
Financing Receivable Modifications [Line Items]
Restructured accruing	0	0
Restructured non-accruing	0	0
Balance	0	0
Specific allowance	0	0
Restructured and subsequently defaulted	0	0
Commercial Portfolio Segment | Commercial Owner Occupied Real Estate
Financing Receivable Modifications [Line Items]
Restructured accruing	0	0
Restructured non-accruing	0	540
Balance	0	540
Specific allowance	0	0
Restructured and subsequently defaulted	$ 0	0
Commercial Portfolio Segment | Troubled Debt Restructuring | Commercial Acquisition, Development and Construction
Financing Receivable Modifications [Line Items]
Specific allowance		0
Restructured and subsequently defaulted		0
Commercial Portfolio Segment | Troubled Debt Restructuring | Commercial Investor Real Estate
Financing Receivable Modifications [Line Items]
Specific allowance		0
Restructured and subsequently defaulted		0
Commercial Portfolio Segment | Troubled Debt Restructuring | Commercial Owner Occupied Real Estate
Financing Receivable Modifications [Line Items]
Specific allowance		0
Restructured and subsequently defaulted		$ 0

GOODWILL AND OTHER INTANGIBLE63

GOODWILL AND OTHER INTANGIBLE ASSETS (Gross Carrying Amouns and Accumulated Amortization of Intangible Assets and Goodwill) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 11,949,000	$ 786,000
Accumulated Amortization	(541,000)	(206,000)
Net Carrying Amount	11,408,000	580,000
Goodwill	342,907,000	85,768,000
Finite-lived Intangible Assets Acquired	700,000
Other Identifiable Intangible Assets
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,271,000	786,000
Accumulated Amortization	(56,000)	(206,000)
Net Carrying Amount	$ 1,215,000	$ 580,000
Other Identifiable Intangible Assets | Weighted average [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	11 years 2 months 12 days	13 years 1 month 24 days
Core deposits [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 10,678,000	$ 0
Accumulated Amortization	(485,000)	0
Net Carrying Amount	$ 10,193,000	$ 0
Core deposits [Member] | Weighted average [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	9 years 9 months 18 days

GOODWILL AND OTHER INTANGIBLE64

GOODWILL AND OTHER INTANGIBLE ASSETS (Estimated Future Amortization Expense for Amortizing Intangibles) (Detail) $ in Thousands	Mar. 31, 2018USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,018	$ 1,621
2,019	1,944
2,020	1,720
2,021	1,507
Thereafter	4,616
Total amortizing intangible assets	$ 11,408

GOODWILL AND OTHER INTANGIBLE65

GOODWILL AND OTHER INTANGIBLE ASSETS (goodwill by segment) (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Goodwill [Line Items]
Beginning balance	$ 85,768
WashingtonFirst Acquisition	257,139
Ending balance	342,907
Community Banking [Member]
Goodwill [Line Items]
Beginning balance	69,991
WashingtonFirst Acquisition	256,940
Ending balance	326,931
Insurance Segment [Member]
Goodwill [Line Items]
Beginning balance	6,788
WashingtonFirst Acquisition	0
Ending balance	6,788
Investment Management Segment [Member]
Goodwill [Line Items]
Beginning balance	8,989
WashingtonFirst Acquisition	199
Ending balance	$ 9,188

DEPOSITS (Composition of Deposi

DEPOSITS (Composition of Deposits) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Disclosure Composition Of Deposits [Abstract]
Noninterest-bearing deposits	$ 1,767,523	$ 1,264,392
Interest-bearing deposits:
Demand	750,899	658,716
Money market savings	1,544,580	1,030,432
Regular savings	357,601	321,171
Time deposits of less than $100,000	378,428	293,201
Time deposits of $100,000 or more	828,175	395,750
Total interest-bearing deposits	3,859,683	2,699,270
Total deposits	$ 5,627,206	$ 3,963,662

SUBORDINATED DEBENTURES (Detail

SUBORDINATED DEBENTURES (Detailed information) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Subordinated debentures [Line Items]:
Subordinated Debt	$ 37,530	$ 37,564	$ 0
Subordinated Debt [Member]
Subordinated debentures [Line Items]:
Purchase accounting premium	2,125	2,158
Subordinated Debt	$ 25,000	25,000
Maturity period	10 years
Subordinated Borrowing, Due Date	Oct. 15, 2025
Subordinated debt fixed interest rate	6.00%
Description of Variable Rate Basis	Libor plus 467 basis points
Subordinated debt variable interest rate	4.67%
Trust preferred capital notes [Member]
Subordinated debentures [Line Items]:
Purchase accounting premium	$ 95	96
Subordinated Debt	$ 10,310	$ 10,310
Subordinated Borrowing, Due Date	Jun. 30, 2033
Subordinated debt fixed interest rate	5.46%
Description of Variable Rate Basis	Libor plus 3.15%
Subordinated debt variable interest rate	3.15%

SHARE BASED COMPENSATION (Addit

SHARE BASED COMPENSATION (Additional Information) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise period	5 years 7 months 9 days	5 years 8 months 12 days
Options exercised intrinsic value	$ 249
Stock Options Granted, Net of Forfeitures	16,212
Stock Options and Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Recognized Compensation expense	$ 500	$ 500
2015 Omnibus Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares authorizes	1,500,000
Common stock, shares available for issuance	1,288,144
Term of share based compensation plan	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	100.00%
2015 Omnibus Incentive Plan | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	7 years
2015 Omnibus Incentive Plan | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	10 years
2015 Omnibus Incentive Plan | Stock Options and Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Recognized Compensation expense	$ 500	500
2015 Omnibus Incentive Plan | Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized Compensation expense	$ 300
Expected cost recognition weighted average period	2 years 5 months
Options exercised intrinsic value	$ 200	400
Stock Options Vested, Fair Value
Stock Options Granted	16,212
2015 Omnibus Incentive Plan | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized Compensation expense	$ 5,100
Expected cost recognition weighted average period	3 years 2 months 12 days
Stock Options Granted	36,003
2015 Omnibus Incentive Plan | Restricted Stock | 3 Year Vesting Period
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock Options Granted	9,170
Vesting period	3 years
2015 Omnibus Incentive Plan | Restricted Stock | 5 Year Vesting Period
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock Options Granted	26,833
Vesting period	5 years
2015 Omnibus Incentive Plan | Performance Restricted Stock Units (RSUs) [Member] | 3 Year Vesting Period
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock Options Granted	6,873
Vesting period	3 years

SHARE BASED COMPENSATION (Fair

SHARE BASED COMPENSATION (Fair Values of all Options Granted Estimated Using Binomial Option-Pricing Model with Weighted-average Assumptions) (Detail) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share Based Compensation [Abstract]
Dividend yield	2.64%	2.45%
Weighted average expected volatility	39.13%	40.27%
Weighted average risk-free interest rate	2.61%	2.14%
Weighted average expected lives (in years)	5 years 7 months 9 days	5 years 8 months 12 days
Weighted average grant-date fair value	$ 11.73	$ 13.42

SHARE BASED COMPENSATION (Summa

SHARE BASED COMPENSATION (Summary of Share Option Activity) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Number of Common Shares
Beginning balance	87,300
Granted	16,212
Exercised	(12,353)	(17,362)
Forfeited or expired	0
Ending balance	91,159
Exercisable, Common Shares	44,462
Weighted Average Exercise Share Price
Beginning balance	$ 26.22
Granted	38.15
Exercised	18.78
Ending balance	29.35
Exercisable Weighted Average Exercise Price	23.44
Weighted average fair value of options granted during the year	$ 11.73	$ 13.42
Weighted Average Contractual Remaining Life(Years)
Balance at end of period	4 years 4 months 24 days
Exercisable at end of period	2 years 10 months 24 days
Beginning balance	$ 1,160
Exercised	249
Ending balance	904
Exercisable, Intrinsic Value	$ 904

SHARE BASED COMPENSATION (Sum71

SHARE BASED COMPENSATION (Summary of Activity for Company's Restricted Stock) (Detail) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Weighted Average Grant-Date Fair Value
Granted	$ 11.73	$ 13.42
Restricted Stock
Number of Shares
Restricted stock beginning balance	189,035
Granted	36,003
Vested	(1,514)
Forfeited	0
Restricted stock ending balance	223,524
Weighted Average Grant-Date Fair Value
Restricted stock beginning balance	$ 30.67
Granted	38.15
Vested	33.04
Restricted stock ending balance	$ 31.86

PENSION, PROFIT SHARING, AND 72

PENSION, PROFIT SHARING, AND OTHER EMPLOYEE BENEFIT PLANS (Net Periodic Benefit Cost) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Pension, Profit Sharing, and Other Employee Benefit Plans [Abstract]
Interest cost on projected benefit obligation	$ 385	$ 410
Expected return on plan assets	(465)	(496)
Recognized net actuarial loss	250	295
Net periodic benefit cost	$ 170	$ 209

NET INCOME PER SHARE (Calculati

NET INCOME PER SHARE (Calculation of Net Income per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 21,665	$ 15,112
Basic:
Basic weighted average EPS shares	35,659	24,119
Basic net income per share	$ 0.61	$ 0.63
Diluted:
Basic weighted average EPS shares	35,659	24,119
Dilutive common stock equivalents	25	40
Dilutive EPS shares	35,684	24,159
Diluted net income per share	$ 0.61	$ 0.63
Anti-dilutive shares	4	0

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Net Accumulated Other Comprehensive Income (Loss)) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (6,857)	$ (6,614)
Other comprehensive income before reclassification, net of tax	(9,368)	904
Reclassifications from accumulated other comprehensive income, net of tax	84	176
Current period change in other comprehensive income, net of tax	(9,284)	1,080
Reclassfication of tax effects from accumulated other comprehensive income	(1,477)
Ending Balance	(17,618)	(5,534)
Unrealized Gains (Losses) on Investments Available-for-Sale
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	687	1,642
Other comprehensive income before reclassification, net of tax	(9,368)	904
Reclassifications from accumulated other comprehensive income, net of tax	(47)	(2)
Current period change in other comprehensive income, net of tax	(9,415)	902
Reclassfication of tax effects from accumulated other comprehensive income	148
Ending Balance	(8,580)	2,544
Defined Benefit Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(7,544)	(8,256)
Other comprehensive income before reclassification, net of tax	0	0
Reclassifications from accumulated other comprehensive income, net of tax	131	178
Current period change in other comprehensive income, net of tax	131	178
Reclassfication of tax effects from accumulated other comprehensive income	(1,625)
Ending Balance	$ (9,038)	$ (8,078)

ACCUMULATED OTHER COMPREHENSI75

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Reclassification Adjustments Out of Accumulated Other Comprehensive Income) (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Unrealized gains/(losses) on investments available-for-sale Affected line item in the Statements of Income:
Investment securities gains		$ 63	$ 2
Income before taxes		63	2
Tax expense		16	0
Net income		47	2
Amortization of defined benefit pension plan items Affected line item in the Statements of Income:
Recognition of unrealized gain (loss)	[1]	(250)	(295)
Income before taxes		(250)	(295)
Tax expense		(119)	(117)
Net income/ (Loss)		$ (131)	$ (178)
[1]	This amount is included in the computation of net periodic benefit cost, see Note 10.

FINANCIAL INSTRUMENTS WITH OF76

FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK AND DERIVATIVES (Company's Interest Rate Swaps) (Detail) - Swap - Commercial Loan [Member] - Not Designated as Hedging Instrument [Member] - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Notional Amount	$ 17.7	$ 17.8
Estimated Fair Value	$ 0.6	$ 0.7

FAIR VALUE (Additional Informat

FAIR VALUE (Additional Information) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Impaired loans	$ 20,793	$ 20,809
Impaired loans fair value	16,300	16,800
Specific loan loss reserves	$ 4,500	$ 4,000

FAIR VALUE (Financial Assets an

FAIR VALUE (Financial Assets and Liabilities at Dates Indicated that Were Accounted for or Disclosed at Fair Value) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Residential mortgage loans held for sale (at fair value)	$ 28,486	$ 9,848
Investments available-for-sale (at fair value)	977,224	729,507
Fair Value, Measurements, Recurring | Residential Mortgage Loans Held For Sale
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Residential mortgage loans held for sale (at fair value)	28,486	9,848
Fair Value, Measurements, Recurring | U.S. Government Agencies
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	208,304	106,568
Fair Value, Measurements, Recurring | State and municipal
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	330,546	312,253
Fair Value, Measurements, Recurring | Mortgage-Backed
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	428,144	300,040
Fair Value, Measurements, Recurring | Corporate Debt
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	9,352	9,432
Fair Value, Measurements, Recurring | Trust Preferred
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	310	1,002
Fair Value, Measurements, Recurring | Marketable Equity Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	568	212
Fair Value, Measurements, Recurring | Interest Rate Swap Agreements
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other assets	574	707
Other liabilities	(574)	(707)
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential Mortgage Loans Held For Sale
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Residential mortgage loans held for sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government Agencies
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | State and municipal
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-Backed
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate Debt
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Trust Preferred
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Marketable Equity Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest Rate Swap Agreements
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other assets	0	0
Other liabilities	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential Mortgage Loans Held For Sale
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Residential mortgage loans held for sale (at fair value)	28,486	9,848
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. Government Agencies
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	208,304	106,568
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | State and municipal
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	330,546	312,253
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mortgage-Backed
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	428,144	300,040
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate Debt
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Trust Preferred
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Marketable Equity Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	568	212
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest Rate Swap Agreements
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other assets	574	707
Other liabilities	(574)	(707)
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Residential Mortgage Loans Held For Sale
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Residential mortgage loans held for sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. Government Agencies
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | State and municipal
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Mortgage-Backed
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Corporate Debt
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	9,352	9,432
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Trust Preferred
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	310	1,002
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Marketable Equity Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Investments available-for-sale (at fair value)	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Interest Rate Swap Agreements
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other assets	0	0
Other liabilities	$ 0	$ 0

FAIR VALUE (Unrealized Losses I

FAIR VALUE (Unrealized Losses Included in Assets Measured in Consolidated Statements of Condition at Fair Value on Recurring Basis) (Detail) - Fair Value, Inputs, Level 3 - Available-for-sale Securities [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 10,434
Asset Transfers Into Level 3	310
Sales of level 3 assets	(1,002)
Total unrealized gains (losses) included in other comprehensive income (loss)	(80)
Ending balance	$ 9,662

FAIR VALUE (Assets Measured at

FAIR VALUE (Assets Measured at Fair Value on Nonrecurring Basis) (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	$ 10,995	$ 10,727
Fair value measured on nonrecurring basis losses	(10,803)	(11,964)
Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	8,234	8,474
Fair value measured on nonrecurring basis losses	(10,749)	(11,806)
Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	2,761	2,253
Fair value measured on nonrecurring basis losses	(54)	(158)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Significant Other Observable Inputs (Level 2) | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Significant Other Observable Inputs (Level 2) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	10,995	10,727
Significant Unobservable Inputs (Level 3) | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	8,234	8,474
Significant Unobservable Inputs (Level 3) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	$ 2,761	$ 2,253

FAIR VALUE (Carrying Amounts an

FAIR VALUE (Carrying Amounts and Fair Values of Company's Financial Instruments) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Financial Liabilities
Securities sold under retail repurchase agreements and federal funds purchased	$ 149,323		$ 119,359
Advances from FHLB	1,011,109		765,833
Subordinated debentures	37,530	$ 37,564	0
Reported Value Measurement [Member]
Financial Assets
Other equity securities	63,115		45,518
Loans, net of allowance	6,014,620		4,268,991
Other assets	108,839		95,730
Financial Liabilities
Time Deposits	1,206,603		688,951
Securities sold under retail repurchase agreements and federal funds purchased	149,323		119,359
Advances from FHLB	1,011,109		765,833
Subordinated debentures	37,530		0
Estimate of Fair Value Measurement [Member]
Financial Assets
Other equity securities	63,115		45,518
Loans, net of allowance	6,043,115		4,320,719
Other assets	108,839		95,730
Financial Liabilities
Time Deposits	1,222,469		684,139
Securities sold under retail repurchase agreements and federal funds purchased	149,323		119,359
Advances from FHLB	1,012,398		769,860
Subordinated debentures	37,530		0
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Other equity securities	0		0
Loans, net of allowance	0		0
Other assets	0		0
Financial Liabilities
Time Deposits	0		0
Securities sold under retail repurchase agreements and federal funds purchased	0		0
Advances from FHLB	0		0
Subordinated debentures	0		0
Significant Other Observable Inputs (Level 2)
Financial Assets
Other equity securities	63,115		45,518
Loans, net of allowance	0		0
Other assets	108,839		95,730
Financial Liabilities
Time Deposits	1,222,469		684,139
Securities sold under retail repurchase agreements and federal funds purchased	149,323		119,359
Advances from FHLB	1,012,398		769,860
Subordinated debentures	0		0
Significant Unobservable Inputs (Level 3)
Financial Assets
Other equity securities	0		0
Loans, net of allowance	6,043,115		4,320,719
Other assets	0		0
Financial Liabilities
Time Deposits	0		0
Securities sold under retail repurchase agreements and federal funds purchased	0		0
Advances from FHLB	0		0
Subordinated debentures	$ 37,530		$ 0

SEGMENT REPORTING (Additional I

SEGMENT REPORTING (Additional Information) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Amortization Of Intangible Assets	$ 541	$ 26
Investment Management
Segment Reporting Information [Line Items]
Assets under management	$ 1,500,000

SEGMENT REPORTING (Operating Se

SEGMENT REPORTING (Operating Segments and Reconciliation of Information to Condensed Consolidated Financial Statements) (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Interest income	$ 75,504	$ 45,958
Interest expense	12,613	5,705
Provision for loan losses	1,997	194	$ 2,977
Non-interest income	17,118	12,632
Non-interest Expense	49,641	29,981
Income before income taxes	28,371	22,710
Income tax expense	6,706	7,598
Net income	21,665	15,112
Assets	7,894,918	5,201,164	$ 5,446,675
Intersegment Elimination
Segment Reporting Information [Line Items]
Interest income	(1)	(2)
Interest expense	(1)	(2)
Provision for loan losses	0	0
Non-interest income	(154)	(209)
Non-interest Expense	(154)	(209)
Income before income taxes	0	0
Income tax expense	0	0
Net income	0	0
Assets	(25,246)	(24,039)
Community Banking
Segment Reporting Information [Line Items]
Interest income	75,504	45,957
Interest expense	12,614	5,707
Provision for loan losses	1,997	194
Non-interest income	13,171	9,086
Non-interest Expense	47,031	27,799
Income before income taxes	27,033	21,343
Income tax expense	6,353	7,060
Net income	20,680	14,283
Assets	7,894,964	5,202,560
Insurance
Segment Reporting Information [Line Items]
Interest income	0	1
Interest expense	0	0
Provision for loan losses	0	0
Non-interest income	1,822	1,752
Non-interest Expense	1,379	1,355
Income before income taxes	443	398
Income tax expense	123	161
Net income	320	237
Assets	8,984	8,066
Investment Management
Segment Reporting Information [Line Items]
Interest income	1	2
Interest expense	0	0
Provision for loan losses	0	0
Non-interest income	2,279	2,003
Non-interest Expense	1,385	1,036
Income before income taxes	895	969
Income tax expense	230	377
Net income	665	592
Assets	$ 16,216	$ 14,577