Randolph Bancorp (RNDB) 10-Q 6 Aug 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 31, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Trading Symbol	RNDB
Entity Registrant Name	Randolph Bancorp, Inc.
Entity Central Index Key	0001667161
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Common Stock, Shares Outstanding		5,760,552
Entity Shell Company	false
Entity File Number	001-37780
Entity Tax Identification Number	811844402
Entity Address, Address Line One	10 Cabot Place
Entity Address, City or Town	Stoughton
Entity Address, State or Province	Massachusetts
Entity Address, Postal Zip Code	02072
City Area Code	781
Local Phone Number	963-2100

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 3,614	$ 3,451
Interest-bearing deposits	7,561	3,667
Total cash and cash equivalents	11,175	7,118
Certificates of deposit	2,205	2,205
Securities available for sale, at fair value	48,851	50,556
Loans held for sale, at fair value	102,784	38,474
Loans, net of allowance for loan losses of $4,154 in 2019 and $4,437 in 2018	451,870	483,846
Federal Home Loan Bank of Boston stock, at cost	5,375	4,700
Accrued interest receivable	1,665	1,504
Mortgage servicing rights, net	8,201	7,786
Premises and equipment, net	6,162	6,368
Bank-owned life insurance	8,349	8,256
Foreclosed real estate, net	90	65
Other assets	5,842	3,462
Total assets	652,569	614,340
Deposits:
Non-interest bearing	65,420	64,229
Interest bearing	313,584	312,321
Brokered	62,649	60,580
Total deposits	441,653	437,130
Federal Home Loan Bank of Boston advances	121,553	89,036
Mortgagors' escrow accounts	1,863	2,129
Post-employment benefit obligations	2,424	2,551
Other liabilities	5,723	5,533
Total liabilities	573,216	536,379
Commitments and contingencies (Note 14)
Stockholders' Equity:
Preferred stock, no par value; authorized: 1,000,000 shares; issued: none
Common stock, $.01 par value; authorized: 15,000,000 shares; issued and outstanding: 5,797,705 shares at June 30, 2019 and 5,903,793 shares at December 31, 2018	58	60
Additional paid-in capital	54,083	55,608
Retained earnings	29,784	28,329
ESOP-Unearned compensation	(4,038)	(4,132)
Accumulated other comprehensive loss, net of tax	(534)	(1,904)
Total stockholders' equity	79,353	77,961
Total liabilities and stockholders' equity	$ 652,569	$ 614,340

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Loans, allowance for loan losses	$ 4,154	$ 4,437
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	5,797,705	5,903,793
Common stock, shares outstanding	5,797,705	5,903,793

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest and dividend income:
Loans	$ 6,058	$ 4,586	$ 11,646	$ 8,881
Securities-taxable	358	398	742	736
Securities-tax exempt	12	21	28	85
Interest-bearing deposits and certificates of deposit	26	34	54	64
Total interest and dividend income	6,454	5,039	12,470	9,766
Interest expense:
Deposits	1,221	730	2,381	1,210
Federal Home Loan Bank of Boston advances	744	276	1,222	541
Total interest expense	1,965	1,006	3,603	1,751
Net interest income	4,489	4,033	8,867	8,015
Provision (credit) for loan losses	(144)	(90)	(144)	5
Net interest income after provision (credit) for loan losses	4,633	4,123	9,011	8,010
Non-interest income:
Customer service fees	362	439	691	739
Gain on loan origination and sale activities, net	5,068	1,854	7,656	3,401
Mortgage servicing fees, net	224	291	543	625
Gain on sales of securities				49
Increase in cash surrender value of life insurance	48	38	93	76
Other	153	161	285	300
Total non-interest income	5,855	2,783	9,268	5,190
Non-interest expenses:
Salaries and employee benefits	6,092	4,979	11,504	9,415
Occupancy and equipment	643	729	1,299	1,427
Data processing	197	166	391	336
Professional fees	287	320	555	572
Marketing	180	321	368	624
Other	1,464	1,397	2,624	2,535
Total non-interest expenses	8,863	7,912	16,741	14,909
Income (loss) before income taxes	1,625	(1,006)	1,538	(1,709)
Income tax expense	119	4	83	8
Net income (loss)	$ 1,506	$ (1,010)	$ 1,455	$ (1,717)
Weighted average common shares outstanding (basic and diluted)	5,465,205	5,580,683	5,471,846	5,594,559
Net income (loss) per common share (basic and diluted)	$ 0.28	$ (0.18)	$ 0.27	$ (0.31)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net income (loss)		$ 1,506	$ (1,010)	$ 1,455	$ (1,717)
Securities available for sale:
Unrealized holding gains (losses)		716	(173)	1,394	(1,228)
Reclassification adjustment for net gains realized in income	[1]			0	(49)
Net unrealized gains (losses)		716	(173)	1,394	(1,277)
Related tax effects		38
Net-of-tax amount		754	(173)	1,394	(1,277)
Related tax effects				0	0
Net-of-tax amount		(12)	(11)	(24)	(23)
Total other comprehensive income (loss)		742	(184)	1,370	(1,300)
Comprehensive income (loss)		2,248	(1,194)	2,825	(3,017)
Supplemental Retirement Plan [Member]
Securities available for sale:
Actuarial losses	[2]	9	9	18	18
Prior service credits	[2]	(21)	(20)	(42)	(41)
Net change in supplemental retirement plan		$ 12	$ 11	$ 24	$ 23
[1]	Amount is included in gain on sales of securities in the consolidated statements of operations.
[2]	Amounts are included in other non-interest expenses in the consolidated statements of operations.

Consolidated Statements Changes

Consolidated Statements Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Unearned Compensation ESOP [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning balance at Dec. 31, 2017	$ 81,483	$ 61	$ 56,493	$ 30,415	$ (4,319)	$ (1,167)
Beginning balance, shares at Dec. 31, 2017		6,034,276
Net income (loss)	(1,717)			(1,717)
Other comprehensive income (loss)	(1,300)					(1,300)
Stock repurchased	(631)	$ (1)	(630)
Stock repurchased, shares		(39,438)
Stock-based compensation	387		387
Restricted stock awards forfeited, shares		(7,042)
ESOP shares committed to be released	151		57		94
Ending balance at Jun. 30, 2018	78,373	$ 60	56,307	28,698	(4,225)	(2,467)
Ending balance, shares at Jun. 30, 2018		5,987,796
Beginning balance at Dec. 31, 2017	81,483	$ 61	56,493	30,415	(4,319)	(1,167)
Beginning balance, shares at Dec. 31, 2017		6,034,276
Ending balance at Dec. 31, 2018	77,961	$ 60	55,608	28,329	(4,132)	(1,904)
Ending balance, shares at Dec. 31, 2018		5,903,793
Beginning balance at Mar. 31, 2018	79,871	$ 61	56,657	29,708	(4,272)	(2,283)
Beginning balance, shares at Mar. 31, 2018		6,029,776
Net income (loss)	(1,010)			(1,010)
Other comprehensive income (loss)	(184)					(184)
Stock repurchased	(561)	$ (1)	(560)
Stock repurchased, shares		(34,938)
Stock-based compensation	180		180
Restricted stock awards forfeited, shares		(7,042)
ESOP shares committed to be released	77		30		47
Ending balance at Jun. 30, 2018	78,373	$ 60	56,307	28,698	(4,225)	(2,467)
Ending balance, shares at Jun. 30, 2018		5,987,796
Beginning balance at Dec. 31, 2018	77,961	$ 60	55,608	28,329	(4,132)	(1,904)
Beginning balance, shares at Dec. 31, 2018		5,903,793
Net income (loss)	1,455			1,455
Other comprehensive income (loss)	1,370					1,370
Stock repurchased	(2,029)	$ (2)	(2,027)
Stock repurchased, shares		(136,923)
Restricted stock awards granted, shares		33,335
Stock-based compensation	458		458
Restricted stock awards forfeited, shares		(2,500)
ESOP shares committed to be released	138		44		94
Ending balance at Jun. 30, 2019	79,353	$ 58	54,083	29,784	(4,038)	(534)
Ending balance, shares at Jun. 30, 2019		5,797,705
Beginning balance at Mar. 31, 2019	78,395	$ 59	55,419	28,278	(4,085)	(1,276)
Beginning balance, shares at Mar. 31, 2019		5,893,293
Net income (loss)	1,506			1,506
Other comprehensive income (loss)	742					742
Stock repurchased	(1,600)	$ (1)	(1,599)
Stock repurchased, shares		(106,423)
Restricted stock awards granted, shares		10,835
Stock-based compensation	242		242
ESOP shares committed to be released	68		21		47
Ending balance at Jun. 30, 2019	$ 79,353	$ 58	$ 54,083	$ 29,784	$ (4,038)	$ (534)
Ending balance, shares at Jun. 30, 2019		5,797,705

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income (loss)	$ 1,455,000	$ (1,717,000)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Provision (credit) for loan losses	(144,000)	5,000
Loans originated for sale	(313,599,000)	(181,394,000)
Net gain on sales of mortgage loans	(6,296,000)	(3,111,000)
Proceeds from sales of mortgage loans	285,347,000	169,238,000
Net amortization of securities	68,000	96,000
Net change in deferred loan costs and fees, and purchase premiums	30,000	(82,000)
Gain on sales of securities		(49,000)
Depreciation and amortization	425,000	408,000
Stock-based compensation	458,000	387,000
ESOP expense	138,000	151,000
Increase in cash surrender value of life insurance	(93,000)	(76,000)
Net increase in mortgage servicing rights	(415,000)	(448,000)
Other, net	(3,681,000)	440,000
Net cash used in operating activities	(36,307,000)	(16,152,000)
Cash flows from investing activities:
Redemptions of certificates of deposit		245,000
Securities available for sale:
Calls/maturities	500,000	470,000
Purchases		(9,993,000)
Sales	0	8,958,000
Principal payments on mortgage-backed securities	2,531,000	4,263,000
Loan originations, net of principal repayments	5,668,000	(25,393,000)
Loan purchases	(2,186,000)	(1,860,000)
Proceeds from residential portfolio loan sale		3,996,000
(Purchases) redemptions of Federal Home Loan Bank of Boston stock	(675,000)	155,000
Purchases of premises and equipment	(219,000)	(1,259,000)
Net cash provided by (used in) investing activities	5,619,000	(20,418,000)
Cash flows from financing activities:
Net increase in non-brokered deposits	2,454,000	12,006,000
Net increase in brokered deposits	2,069,000	44,057,000
Net increase (decrease) in short-term Federal Home Loan Bank of Boston borrowings	19,152,000	(17,063,000)
Issuance of long-term Federal Home Loan Bank of Boston advances	15,000,000
Repayments of long-term Federal Home Loan Bank of Boston advances	(1,635,000)	(2,211,000)
Net increase (decrease) in mortgagors' escrow accounts	(266,000)	652,000
Repurchases of common stock	(2,029,000)	(631,000)
Net cash provided by financing activities	34,745,000	36,810,000
Net change in cash and cash equivalents	4,057,000	240,000
Cash and cash equivalents at beginning of period	7,118,000	8,822,000
Cash and cash equivalents at end of period	11,175,000	9,062,000
Supplemental cash flow information:
Interest paid on deposits and borrowed funds	3,864,000	1,715,000
Income taxes paid	15,000	$ 16,000
Non-cash items:
Transfer of held for sale loans to portfolio	3,969,000
Transfer of portfolio loans to held for sale	$ 28,608,000

Basis of Financial Statement Pr

Basis of Financial Statement Presentation	6 Months Ended
	Jun. 30, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Financial Statement Presentation	1. BASIS OF FINANCIAL STATEMENT PRESENTATION The consolidated financial statements include the accounts of Randolph Bancorp, Inc. (“Bancorp”) and its wholly-owned subsidiary, Envision Bank (the “Bank”, together with Bancorp, the “Company”). The Bank has subsidiaries involved in owning investment securities and foreclosed real estate properties and a subsidiary which provides loan closing services. All intercompany accounts and transactions have been eliminated in consolidation. These financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial reporting and with the instructions to Form 10-Q and Article 10 of Regulation S-X issued by the Securities and Exchange Commission (“SEC”). Accordingly, the accompanying interim financial statements do not include all information required under GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation of the financial statements, primarily consisting of normal recurring adjustments, have been included. The operating results for the three and six months ended June 30, 2019 are not necessarily indicative of the results to be expected for the year ending December 31, 2019 or any other interim period. For further information, refer to the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018, as filed with the SEC.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2019
Accounting Changes And Error Corrections [Abstract]
Recent Accounting Pronouncements	2. RECENT ACCOUNTING PRONOUNCEMENTS On January 1, 2019, the Company early adopted Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers. In January 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-01, Financial Instruments In February 2016, FASB issued ASU 2016-02, Leases In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses In April 2017, the FASB issued ASU 2017-08 Receivables – Non-refundable Fees and Other Costs In August 2018, the FASB issued ASU 2018-13 Fair Value Measurement – Changes to the Disclosure Requirements for Fair Value Measurement, .

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Accumulated Other Comprehensive Loss	3 . ACCUMULATED OTHER COMPREHENSIVE LOSS Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income (loss). Although certain changes in assets and liabilities are reported as a separate component of stockholders’ equity, such items, along with net income (loss), are components of comprehensive income (loss). The components of accumulated other comprehensive loss, included in total stockholders’ equity, are as follows: June 30, December 31, 2019 2018 (In thousands) Securities available for sale: Net unrealized gain (loss) $ 60 $ (1,334 ) Tax effect (313 ) (313 ) Net-of-tax amount (253 ) (1,647 ) Supplemental retirement plan Unrecognized net actuarial loss (587 ) (605 ) Unrecognized net prior service credit 353 395 (234 ) (210 ) Tax effect (47 ) (47 ) Net-of-tax amount (281 ) (257 ) Accumulated other comprehensive loss $ (534 ) $ (1,904 )

Securities Available for Sale

Securities Available for Sale	6 Months Ended
	Jun. 30, 2019
Investments Debt And Equity Securities [Abstract]
Securities Available for Sale	4 . SECURITIES AVAILABLE FOR SALE The amortized cost and fair value of securities available for sale, including gross unrealized gains and losses, are as follows: Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value (In thousands) June 30, 2019 Debt securities: U.S. Government-sponsored enterprises $ 4,000 $ 21 $ (10 ) $ 4,011 Corporate 1,519 19 (2 ) 1,536 Municipal 989 11 — 1,000 Residential mortgage-backed securities: U.S. Government-sponsored enterprises 25,043 337 (255 ) 25,125 Commercial mortgage-backed securities: U.S. Government-sponsored enterprises 9,036 — (86 ) 8,950 U.S. Government-guaranteed 1,655 — (1 ) 1,654 Collateralized mortgage obligations: U.S. Government-sponsored enterprises 1,540 20 — 1,560 U.S. Government-guaranteed 4,491 19 (27 ) 4,483 Total debt securities 48,273 427 (381 ) 48,319 Mutual fund 518 14 — 532 Total securities available for sale $ 48,791 $ 441 $ (381 ) $ 48,851 December 31, 2018 Debt securities: U.S. Government-sponsored enterprises $ 3,999 $ 13 $ (31 ) $ 3,981 Corporate 1,524 6 (18 ) 1,512 Municipal 1,489 18 — 1,507 Residential mortgage-backed securities: U.S. Government-sponsored enterprises 26,989 71 (754 ) 26,306 Commercial mortgage-backed securities: U.S. Government-sponsored enterprises 9,094 — (487 ) 8,607 U.S. Government-guaranteed 1,796 — (33 ) 1,763 Collateralized mortgage obligations: U.S. Government-sponsored enterprises 1,642 — (17 ) 1,625 U.S. Government-guaranteed 4,839 2 (104 ) 4,737 Total debt securities 51,372 110 (1,444 ) 50,038 Mutual fund 518 — — 518 Total securities available for sale $ 51,890 $ 110 $ (1,444 ) $ 50,556 For the six months ended June 30, 2018, proceeds from sales of available for sale securities amounted to $9.0 million with gross realized gains of $49,000 and no gross realized losses. There were no sales of securities during the six months ended June 30, 2019. The amortized cost and fair value of debt securities by contractual maturity at June 30, 2019 are presented below. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Amortized Fair Cost Value (In thousands) Within 1 year $ 3,000 $ 2,997 After 1 year through 5 years 2,669 2,700 After 5 years through 10 years 839 850 6,508 6,547 Mortgage-backed securities 41,765 41,772 $ 48,273 $ 48,319 Information pertaining to securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous loss position, follows: Less Over Twelve Months Gross Gross Unrealized Fair Unrealized Fair Losses Value Losses Value June 30, 2019 (In thousands) Debt securities: U.S. Government-sponsored enterprises $ — $ — $ (10 ) $ 1,990 Corporate (2 ) 513 — — Residential mortgage-backed securities: U.S. Government-sponsored enterprises — — (255 ) 11,060 Commercial mortgage-backed securities: U.S. Government-sponsored enterprises — — (86 ) 8,950 U.S. Government-guaranteed (1 ) 1,654 — — Collateralized mortgage obligations: U.S. Government-guaranteed — — (27 ) 2,791 Total debt securities $ (3 ) $ 2,167 $ (378 ) $ 24,791 December 31, 2018 Debt securities: U.S. Government-sponsored enterprises $ — $ — $ (31 ) $ 1,969 Corporate (5 ) 497 (13 ) 506 Residential mortgage-backed securities: U.S. Government-sponsored enterprises (6 ) 7,038 (748 ) 12,981 Commercial mortgage-backed securities: U.S. Government-sponsored enterprises — — (487 ) 8,607 U.S. Government-guaranteed — — (33 ) 1,763 Collateralized mortgage obligations: U.S. Government-sponsored enterprises — — (17 ) 1,625 U.S. Government-guaranteed — — (104 ) 3,879 Total debt securities $ (11 ) $ 7,535 $ (1,433 ) $ 31,330 At June 30, 2019, 22 debt securities had unrealized losses with aggregate depreciation of 1.39% from the Company’s amortized cost basis. The unrealized losses at June 30, 2019, which related primarily to securities issued by U.S. government-sponsored enterprises, were due to interest rate increases since the date on which they were purchased. The Company currently does not believe it is probable that it will be unable to collect all amounts due according to the contractual terms of these investments. Therefore, it is expected that the securities would not be settled at a price less than the par value of the investment. Because the Company does not intend to sell any debt securities and it is more likely than not that the Company will not be required to sell any debt securities before recovery of its amortized cost basis, it does not consider these investments to be other-than-temporarily impaired at June 30, 2019.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2019
Receivables [Abstract]
Loans and Allowance for Loan Losses	5. LOANS AND ALLOWANCE FOR LOAN LOSSES A summary of the loan portfolio is as follows: June 30, 2019 December 31, 2018 (In thousands) Mortgage loans on real estate: Residential: One-to-four family $ 229,079 $ 246,756 Home equity loans and lines of credit 43,162 43,545 Commercial 114,547 113,642 Construction 38,733 42,139 425,521 446,082 Commercial and industrial 11,554 21,285 Consumer 17,470 19,407 Total loans 454,545 486,774 Allowance for loan losses (4,154 ) (4,437 ) Net deferred loan costs and fees, and purchase premiums 1,479 1,509 $ 451,870 $ 483,846 In June 2019, management transferred $28.6 million of one-to-four family residential mortgage loans from the loan portfolio to loans held for sale. The decision to sell these loans was prompted by the decrease in mortgage rates. In addition, the sale of these loans will provide liquidity to fund future portfolio loan growth. In connection with this transfer, the Company recognized a favorable fair value adjustment of $170,000, which is included in gain on loan origination and sale activities for the three months ended June 30, 2019. In July 2019, the Bank committed to sell $21.8 million of the transferred loans. In August 2019, the Bank committed to sell the remaining $6.8 million of the transferred loans. The sales of loans under these commitments are expected to be completed in August 2019 and are subject to standard closing conditions for transactions of this nature. The following tables present activity in the allowance for loan losses by loan category for the three and six months ended June 30, 2019 and 2018, and allocation of the allowance to each category as of June 30, 2019 and December 31, 2018: Second Residential Mortgages Commercial Commercial 1-4 Family and Real Estate Construction and Industrial Consumer Total (In thousands) Three Months Ended June 30, 2019 Allowance at March 31, 2019 $ 1,086 $ 292 $ 1,642 $ 803 $ 248 $ 211 $ 4,282 Provision (credit) for loan losses (83 ) 5 (17 ) (48 ) 16 (17 ) (144 ) Loans charged-off — — — — — (3 ) (3 ) Recoveries 15 — — — — 4 19 Balance at June 30, 2019 $ 1,018 $ 297 $ 1,625 $ 755 $ 264 $ 195 $ 4,154 Three Months Ended June 30, 2018 Allowance at March 31, 2018 $ 876 $ 365 $ 1,700 $ 386 $ 319 $ 198 $ 3,844 Provision (credit) for loan losses 88 (85 ) (195 ) 57 (21 ) 66 (90 ) Loans charged-off — — — — — (22 ) (22 ) Recoveries 5 — — — — 5 10 Balance at June 30, 2018 $ 969 $ 280 $ 1,505 $ 443 $ 298 $ 247 $ 3,742 Six Months Ended June 30, 2019 Allowance at December 31, 2018 $ 1,092 $ 292 $ 1,648 $ 765 $ 265 $ 375 $ 4,437 Provision (credit) for loan losses (95 ) 5 (23 ) (10 ) (1 ) (20 ) (144 ) Loans charged-off — — — — — (168 ) (168 ) Recoveries 21 — — — — 8 29 Balance at June 30, 2019 $ 1,018 $ 297 $ 1,625 $ 755 $ 264 $ 195 $ 4,154 Six Months Ended June 30, 2018 Allowance at December 31, 2017 $ 854 $ 359 $ 1,620 $ 351 $ 335 $ 218 $ 3,737 Provision (credit) for loan losses 85 (79 ) (115 ) 92 (37 ) 59 5 Loans charged-off — — — — — (37 ) (37 ) Recoveries 30 — — — — 7 37 Balance at June 30, 2018 $ 969 $ 280 $ 1,505 $ 443 $ 298 $ 247 $ 3,742 Additional information pertaining to the allowance for loan losses at June 30, 2019 and December 31, 2018 is as follows: Second Residential Mortgages Commercial Commercial 1-4 Family and Real Estate Construction and Industrial Consumer Total June 30, 2019 (In thousands) Allowance for impaired loans $ 102 $ — $ — $ — $ — $ 24 $ 126 Allowance for non-impaired loans 916 297 1,625 755 264 171 4,028 Total allowance for loan losses $ 1,018 $ 297 $ 1,625 $ 755 $ 264 $ 195 $ 4,154 Impaired loans $ 5,534 $ 337 $ 49 $ — $ — $ 49 $ 5,969 Non-impaired loans 223,545 42,825 114,498 38,733 11,554 17,421 448,576 Total loans $ 229,079 $ 43,162 $ 114,547 $ 38,733 $ 11,554 $ 17,470 $ 454,545 December 31, 2018 Allowance for impaired loans $ 108 $ — $ — $ — $ — $ 174 $ 282 Allowance for non-impaired loans 984 292 1,648 765 265 201 4,155 Total allowance for loan losses $ 1,092 $ 292 $ 1,648 $ 765 $ 265 $ 375 $ 4,437 Impaired loans $ 6,291 $ 408 $ 52 $ — $ — $ 199 $ 6,950 Non-impaired loans 240,465 43,137 113,590 42,139 21,285 19,208 479,824 Total loans $ 246,756 $ 43,545 $ 113,642 $ 42,139 $ 21,285 $ 19,407 $ 486,774 The following is a summary of past due and non-accrual loans at June 30, 2019 and December 31, 2018: 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days or More Past Due Total Past Due Non-accrual Loans (In thousands) June 30, 2019 Residential one-to-four family $ 1,042 $ 43 $ — $ 1,085 $ 1,978 Home equity loans and lines of credit 169 40 — 209 337 Commercial real estate — — — — — Construction — — — — — Commercial and industrial — — — — — Consumer 72 23 — 95 — Total $ 1,283 $ 106 $ — $ 1,389 $ 2,315 December 31, 2018 Residential one-to-four family $ 655 $ 207 $ 635 $ 1,497 $ 2,474 Home equity loans and lines of credit 520 — — 520 407 Commercial real estate — — — — — Construction — — — — — Commercial and industrial — — — — — Consumer 25 4 — 29 149 Total $ 1,200 $ 211 $ 635 $ 2,046 $ 3,030 The following is a summary of impaired loans at June 30, 2019 and December 31, 2018: Recorded Investment Unpaid Principal Balance Related Allowance (In thousands) June 30, 2019 Impaired loans without a valuation allowance: Residential one-to-four family $ 3,717 $ 3,717 Home equity loans and lines of credit 337 337 Commercial real estate 49 49 Total 4,103 4,103 Impaired loans with a valuation allowance: Residential one-to-four family 1,817 1,817 $ 102 Consumer 49 49 24 1,866 1,866 126 Total impaired loans $ 5,969 $ 5,969 $ 126 December 31, 2018 Impaired loans without a valuation allowance: Residential one-to-four family $ 4,280 $ 4,280 Home equity loans and lines of credit 408 408 Commercial real estate 52 52 Total 4,740 4,740 Impaired loans with a valuation allowance: Residential one-to-four family 2,011 2,011 $ 108 Home equity loans and lines of credit 199 199 174 Total 2,210 2,210 282 Total impaired loans $ 6,950 $ 6,950 $ 282 Additional information pertaining to impaired loans follows: Average Interest Cash Basis Recorded Income Interest Investment Recognized Recognized (In thousands) Six Months Ended June 30, 2019 Residential one-to-four family $ 5,630 $ 126 $ 51 Home equity loans and lines of credit 437 10 10 Commercial real estate 187 2 — Consumer 49 1 — Total $ 6,303 $ 139 $ 61 Six Months Ended June 30, 2018 Residential one-to-four family $ 4,965 $ 116 $ 40 Home equity loans and lines of credit 262 3 25 Commercial real estate 312 9 — Total $ 5,539 $ 128 $ 65 Three Months Ended June 30, 2019 Residential one-to-four family $ 5,498 $ 49 $ 19 Home equity loans and lines of credit 337 4 4 Commercial real estate 187 1 — Consumer 49 — — Total $ 6,071 $ 54 $ 23 Three Months Ended June 30, 2018 Residential one-to-four family $ 4,988 $ 62 $ 20 Home equity loans and lines of credit 253 — 4 Commercial real estate 294 4 — Total $ 5,535 $ 66 $ 24 No additional funds are committed to be advanced in connection with impaired loans. Troubled Debt Restructurings The Company periodically grants concessions to borrowers experiencing financial difficulties. The Company’s troubled debt restructurings consist primarily of interest rate concessions for periods of three months to thirty years for residential real estate loans, and for periods up to one year for commercial real estate loans. At June 30, 2019, the Company had sixteen residential real estate loans and one commercial real estate loan aggregating $3,260,000 and $49,000, respectively, which were subject to troubled debt restructuring agreements. At June 30, 2018, the Company had nineteen residential real estate loans and two commercial real estate loan aggregating $3,959,000 and $120,000, respectively, which were subject to troubled debt restructuring agreements. As of June 30, 2019 and 2018, $3,309,000 and $4,079,000, respectively, in troubled debt restructurings were performing in accordance with the terms of the modified loan agreements. Included in such amounts are $649,000 and $1,107,000, respectively, that are being accounted for as non-accrual loans. For the six months ended June 30, 2019 six months ended June 30, 2018 Management performs a discounted cash flow calculation to determine the amount of valuation reserve required on each of the troubled debt restructurings. Any reserve required is recorded as part of the allowance for loan losses. During the three and six months ended June 30, 2019 and 2018, there were no material changes to the allowance for loan losses as a result of loan modifications made which were considered a troubled debt restructuring. During the three and six months ended June 30, 2019 and 2018, there were no troubled debt restructurings that defaulted (over 30 days past due) within twelve months of the restructure date. Credit Quality Information The Company utilizes an eight-grade internal loan rating system for commercial real estate, construction and commercial and industrial loans, as follows: Loans rated 1 – 3B are considered “pass” rated loans with low to average risk. Loans rated 4 are considered “special mention.” These loans are starting to show signs of potential weakness and are being closely monitored by management. Loans rated 5 are considered “substandard” and are inadequately protected by the current net worth and paying capacity of the obligors and/or the collateral pledged. There is a distinct possibility that the Company will sustain some loss if the weakness is not corrected. Loans rated 6 are considered “doubtful” and have all the weaknesses inherent in those classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, highly questionable and improbable. Loans rated 7 are considered uncollectible (“loss”) and of such little value that their continuance as loans is not warranted. On an annual basis, or more often if needed, the Company formally reviews the ratings on all commercial real estate, construction and commercial and industrial loans. Annually, the Company engages an independent third party to review a significant portion of loans within these segments. Management uses the results of these reviews as part of its annual review process. The following table presents the Company’s loans by risk rating at the dates indicated: June 30, 2019 December 31, 2018 Commercial Real Construction Commercial and Industrial Commercial Real Construction Commercial and Industrial (In thousands) Loans rated 1 - 3B (Pass rated) $ 114,342 $ 38,733 $ 10,459 $ 113,642 $ 42,139 $ 21,285 Loans rated 4 205 — 1,095 — — — Loans rated 5 - 7 — — — — — — $ 114,547 $ 38,733 $ 11,554 $ 113,642 $ 42,139 $ 21,285 Residential mortgages, home equity loans and lines of credit, and consumer loans are monitored for credit quality based primarily on their payment status. When one of these loans becomes more than 90 days delinquent, it is assigned an internal loan rating. At June 30, 2019, $49,000 in consumer loans and $2,411,000 in residential mortgages were rated as substandard, and $600,000 in residential mortgages and $337,000 in home equity loans were rated as special mention. At December 31, 2018, one consumer loan for $149,000 was rated as doubtful, $2,469,000 in residential mortgages and one consumer loan for $50,000 were rated as substandard, and $936,000 in residential mortgages and $407,000 in home equity loans were rated as special mention.

Loan Servicing

Loan Servicing	6 Months Ended
	Jun. 30, 2019
Transfers And Servicing [Abstract]
Loan Servicing	6 . LOAN SERVICING Mortgage loans serviced for others are not included in the accompanying consolidated balance sheets. The unpaid principal balances of residential mortgage loans serviced for others were $993.0 million and $929.3 million at June 30, 2019 and December 31, 2018, respectively. The following table summarizes the activity relating to mortgage servicing rights for the six months ended June 30, 2019 and 2018 (in thousands): June 30, 2019 June 30, 2018 Mortgage servicing rights: Balance at beginning of year $ 7,794 $ 6,487 Additions through originations 1,100 851 Amortization (572 ) (480 ) Balance at end of period $ 8,322 $ 6,858 Valuation allowance: Balance at beginning of year $ 8 $ 90 Provision (credit) 113 (77 ) Balance at end of period $ 121 $ 13 Amortized cost, net $ 8,201 $ 6,845 Fair value $ 8,356 $ 7,380 During the six months ended June 30, 2019 and 2018, the Company increased (reduced) the valuation allowance for its mortgage servicing rights by $113,000 and (

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	7. INCOME TAXES Income tax expense for the three months ended June 30, 2019 includes a state tax expense of $81,000 and reversal of the federal tax expense benefit of $38,000 recognized in the first quarter of 2019. The state tax expense is based on the projected state tax rate for the year. The reversal of the federal tax benefit was fully offset by a tax benefit included in other comprehensive income. During the six months ended June 30, 2019 and 2018, the Company recorded a current state tax expense of $83,000 and $8,000, respectively. Since 2014, the Company has maintained a valuation allowance for all of its deferred tax assets based on a determination that it was more likely than not that such assets would not be realized. This determination was based on the Company’s net operating loss (“NOL”) carryforward position, its current period operating results, exclusive of non-recurring items, and its expectations for the upcoming year. In performing subsequent assessments, management has concluded that no significant changes in the key factors affecting the realizability of the deferred tax asset has occurred and that a valuation allowance for all deferred tax assets should be maintained. The Company’s NOL carryforward at June 30, 2019 was $13.6 million. The tax valuation allowance at such date totaled $2.7 million.

On-Balance Sheet Derivative Ins

On-Balance Sheet Derivative Instruments and Hedging Activities	6 Months Ended
	Jun. 30, 2019
Derivative Instruments And Hedging Activities Disclosure [Abstract]
On-Balance Sheet Derivative Instruments and Hedging Activities	8. ON-BALANCE SHEET DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES Derivative Loan Commitments Mortgage loan interest rate lock commitments qualify as derivative loan commitments if the loan that will result from exercise of the commitment will be held for sale upon funding. The Company enters into commitments to fund residential mortgage loans at specified rates and times in the future, with the intention that these loans will subsequently be sold either in the secondary market, to large aggregators of loans or to other financial institutions. Outstanding derivative loan commitments expose the Company to the risk that the price of the loans arising from exercise of the loan commitment might decline from inception of the rate lock to funding of the loan due to an increase in mortgage interest rates. If interest rates increase, the value of these loan commitments decreases. Conversely, if interest rates decrease, the value of these loan commitments increases. The notional amount of derivative loan commitments was $171,598,000 and $36,852,000 at June 30, 2019 and December 31, 2018, respectively. The fair value of such commitments at June 30, 2019 and December 31, 2018 was $2,220,000 and $627,000, respectively, and is included in other assets in the consolidated balance sheets. Forward Loan Sale Commitments The Company utilizes both “mandatory delivery” and “best efforts” forward loan sale commitments and, effective in the fourth quarter of 2018, To Be Announced (“TBA”) securities to mitigate the risk of potential decreases in the value of loans that would result from the exercise of the derivative loan commitments. With a “mandatory delivery” contract, the Company commits to deliver a certain principal amount of mortgage loans to an investor at a specified price on or before a specified date. If the Company fails to deliver the amount of mortgages necessary to fulfill the commitment by the specified date, it is obligated to pay a “pair-off” fee, based on then-current market prices, to the investor to compensate the investor for the shortfall. With a “best efforts” contract, the Company commits to deliver an individual mortgage loan of a specified principal amount and quality to an investor if the loan to the underlying borrower closes. Generally, the price the investor will pay the seller for an individual loan is specified prior to the loan being funded (e.g., on the same day the lender commits to lend funds to a potential borrower). The Company expects that these forward loan sale commitments and TBA securities will experience changes in fair value that serve to offset the change in fair value of derivative loan commitments the degree to which depends on the notional amount of such sale commitments. The notional amount of forward loan sale commitments and TBA securities was $190,852,000 and $42,021,000 at June 30, 2019 and December 31, 2018, respectively. The fair value of these derivative instruments was $369,000 and $253,000 at June 30, 2019 and December 31, 2018, respectively, of which $527,000 and $263,000 are included in other liabilities in the consolidated balance sheets and $158,000 and $10,000 are included in other assets in the consolidated balance sheets as of June 30, 2019 and December 31, 2018, respectively.

Employee Stock Ownership Plan

Employee Stock Ownership Plan	6 Months Ended
	Jun. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Employee Stock Ownership Plan	9. The Company maintains an Employee Stock Ownership Plan (“ESOP”), which is a tax-qualified retirement plan providing eligible employees the opportunity to own Bancorp stock. Bancorp made a loan to the ESOP for the purchase of 469,498 shares of its common stock at $10.00 per share in connection with its initial public offering in July 2016. The loan is payable annually over 25 years with interest at the prime rate to be reset each January 1 st Shares are committed to be released on a monthly basis and allocated as of December 31 st

Share Repurchase Program

Share Repurchase Program	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Share Repurchase Program	10. SHARE REPURCHASE PROGRAM In September 2017, the Company’s Board of Directors adopted a share repurchase program under which the Company may repurchase up to 10%, or 586,854 shares, of its then outstanding common shares. In September 2018, this program was extended for an additional year. Repurchases under the program may be made in open market or in privately negotiated transactions and pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the SEC. Any repurchased shares will be held by the Company as authorized but unissued shares. The repurchase program may be suspended or terminated at any time without prior notice and is currently set to expire on September 14, 2019. As of June 30, 2019, the Company had repurchased 254,800 shares at a cost of $3,860,000 in connection with this program.

Earnings (Loss) Per Share

Earnings (Loss) Per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	11. EARNINGS (LOSS) PER SHARE Basic earnings (loss) per share represents net income (loss) divided by the weighted average of common shares outstanding during the period. Unvested restricted shares of common stock having dividend rights are treated as “participating securities” and, accordingly, are considered outstanding in computing basic earnings (loss) per share. Unallocated ESOP shares are not considered to be outstanding for purposes of computing earnings per share. None of the Company’s outstanding stock options were included in the computation of diluted earnings (loss) per share for the three and six months ended June 30, 2019 and 2018 as their impact would have been anti-dilutive. The following table sets forth the calculation of the average number of shares outstanding used to calculate the basic and diluted income (loss) per share for the periods indicated: Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Average number of common shares outstanding 5,871,321 6,005,578 5,880,309 6,021,802 Less: Average unallocated ESOP shares (406,116 ) (424,895 ) (408,463 ) (427,243 ) 5,465,205 5,580,683 5,471,846 5,594,559

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	12. STOCK-BASED COMPENSATION Under the Randolph Bancorp, Inc. 2017 Stock Option and Incentive Plan (the “Equity Plan”), the Company may grant options, restricted stock, restricted units or performance awards to its directors, officers and employees. Both incentive stock options and nonqualified stock options may be granted under the Equity Plan with 586,872 shares initially reserved for options. The exercise price of each option equals the market price of the Company’s stock on the date of the grant and the maximum term of each options is 10 years. The total number of shares initially reserved for restricted stock is 234,749. Options and awards generally vest ratably over three to five years. Options awarded to one individual in 2019 vest based on the achievement of specific annual performance goals. The fair value of shares awarded is based on the market price at the date of grant. Stock Options The fair value of each option grant is estimated on the date of the grant using the Black-Scholes option-pricing model with the following assumptions: • Volatility is based on peer group volatility because the Company does not have a sufficient trading history. • Expected life represents the period of time that the option is expected to be outstanding, taking into account the contractual term, and the vesting period. • Expected dividend yield is based on the Company's history and expectation of dividend payouts. • The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant for a period equivalent to the expected life of the option. During the six months ended June 30, 2019 and 2018 the Company made the following grants of options to purchase shares of common stock and used the following assumptions in measuring the fair value of such grants: 2019 2018 Options granted 57,252 27,000 Vesting period (years) 1-5 3-5 Expiration period (years) 10 10 Expected volatility 29.87 % 29.87 % Expected life (years) 6.5 6.5 Expected dividend yield — — Risk free interest rate 2.37% - 2.61% 2.68% -2.77% Option fair value $2.99 - $5.83 $5.79 A summary of stock option activity for the six months ended June 30, 2019 is presented in the table below: Options Stock Option Grants Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Balance at January 1, 2019 312,705 $ 14.78 8.73 $ — Granted 57,252 14.93 8.34 — Expired (3,250 ) 14.66 — — Balance at June 30, 2019 366,707 $ 14.83 8.54 $ 135,971 Exercisable at June 30, 2019 64,018 $ 14.76 — $ 24,942 Unrecognized compensation cost (inclusive of directors' options) $ 1,189,000 Weighted average remaining recognition period (years) 3.23 For the six months ended June 30, 2019 and 2018, stock-based compensation expense applicable to stock options was $192,000 and $145,000, respectively. For the three months ended June 30, 2019 and 2018, stock-based compensation expense applicable to stock options was $101,000 and $71,000, respectively. Restricted Stock Shares issued may be either authorized but unissued shares or reacquired shares held by the Company. Any shares forfeited because vesting requirements are not met will become available for reissuance under the Equity Plan. The fair market value of shares awarded, based on the market price at the date of grant, is amortized over the applicable vesting period. Restricted stock awarded to date has been at no cost to the awardee. The following table presents the activity in restricted stock awards under the Equity Plan for the six months ended June 30, 2019: Restricted Stock Awards Weighted Average Grant Price Restricted stock awards at January 1, 2019 126,694 $ 14.66 Granted 33,335 15.07 Vested — — Forfeited (2,500 ) 15.00 Restricted stock awards at June 30, 2019 157,529 $ 14.74 Unrecognized compensation cost $ 1,938,000 Weighted average remaining recognition period (years) 3.52 For the six months ended June 30, 2019 and 2018, stock-based compensation expense applicable to restricted stock was $266,000 and $242,000, respectively. For the three months ended June 30, 2019 and 2018 stock-based compensation expense applicable to restricted stock was $141,000 and $109,000, respectively.

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	13. Determination of fair value The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company’s various assets and liabilities. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the asset or liability. The following methods and assumptions were used by the Company in estimating fair value disclosures: Cash and cash equivalents Certificates of deposit Securities Federal Home Loan Bank of Boston (“FHLBB”) stock Loans held for sale Fair values are based on commitments in effect from investors or prevailing market prices and include the servicing value of the loans. Loans Mortgage servicing rights Deposit liabilities FHLBB advances Accrued interest On-balance-sheet derivatives Off-balance sheet credit-related instruments Assets and liabilities recorded at fair value on a recurring basis Assets and liabilities recorded at fair value on a recurring basis are summarized below. Total Level 1 Level 2 Level 3 Fair (In thousands) June 30, 2019 Assets: Securities available for sale: Debt securities $ — $ 48,319 $ — $ 48,319 Mutual fund — 532 — 532 Portfolio loans (fair value option) — 4,986 — 4,986 Loans held for sale (fair value option) — 102,784 — 102,784 Derivative loan commitments — 2,220 — 2,220 Forward loan sale commitments — 158 — 158 Liabilities: Forward loan sale commitments, including TBAs — 527 — 527 December 31, 2018 Assets: Securities available for sale: Debt securities $ — $ 50,038 $ — $ 50,038 Mutual fund — 518 — 518 Portfolio loans (fair value option) — 3,680 — 3,680 Loans held for sale (fair value option) — 38,474 — 38,474 Derivative loan commitments — 627 — 627 Forward loan sale commitments — 10 — 10 Liabilities: Forward loan sale commitments, including TBAs — 263 — 263 There were no transfers between levels for assets and liabilities recorded at fair value on a recurring basis during the six months ended June 30, 2019 and 2018. Assets recorded at fair value on a non-recurring basis The Company may also be required, from time to time, to record certain other assets at fair value on a non-recurring basis in accordance with GAAP. These adjustments to fair value usually result from application of lower-of-cost-or-market accounting or write-downs of individual assets. The following table summarizes the fair value hierarchy used to determine each adjustment and the carrying value of the related assets as of June 30, 2019 and December 31, 2018. Period Ended June 30, 2019 June 30, 2019 Level 1 Level 2 Level 3 Total Gains (Losses) (In thousands) Collateral dependent impaired loans $ — $ — $ 952 $ — Mortgage servicing rights — 8,201 — (113 ) Foreclosed real estate — — 90 — $ — $ 8,201 $ 1,042 $ (113 ) December 31, 2018 Level 1 Level 2 Level 3 (In thousands) Collateral dependent impaired loans $ — $ — $ 1,352 Mortgage servicing rights — 7,786 — Foreclosed real estate — — 65 $ — $ 7,786 $ 1,417 The Company recorded an increase in the valuation allowance for its mortgage servicing rights of $113,000 during the six months ended June 30, 2019 There were no liabilities measured at fair value on a non-recurring basis at June 30, 2019 and December 31, 2018. Summary of fair values of financial instruments The estimated fair values, and related carrying amounts, of the Company’s financial instruments are presented below. Certain financial instruments and all non-financial instruments are exempt from disclosure requirements. Accordingly, the aggregate fair value amounts presented herein do not represent the underlying fair value of the Company. This table excludes financial instruments for which the carrying amount approximates fair value. Financial assets for which the fair value approximates carrying value include cash and cash equivalents, and accrued interest receivable. Financial liabilities for which the fair value approximates carrying value include mortgagors’ escrow accounts and accrued interest payable. June 30, 2019 Carrying Fair Amount Value Level 1 Level 2 Level 3 (In thousands) Financial assets: Certificates of deposit $ 2,205 $ 2,202 $ — $ 2,202 $ — Securities available for sale 48,851 48,851 — 48,851 — Loans held for sale 102,784 102,784 — 102,784 — Loans, net 451,870 452,181 — — 452,181 Derivative assets 2,378 2,378 — 2,378 — Financial liabilities: Deposits $ 441,653 $ 441,585 $ — $ 441,585 $ — FHLBB advances 121,553 121,675 — 121,675 — Derivative liabilities 527 527 — 527 — December 31, 2018 Carrying Fair Amount Value Level 1 Level 2 Level 3 (In thousands) Financial assets: Certificates of deposit $ 2,205 $ 2,196 $ — $ 2,196 $ — Securities available for sale 50,556 50,556 — 50,556 — Loans held for sale 38,474 38,474 — 38,474 — Loans, net 483,846 473,612 — — 473,612 Derivative assets 637 637 — 637 — Financial liabilities: Deposits $ 437,130 435,964 $ — $ 435,964 $ — FHLBB advances 89,036 88,894 — 88,894 — Derivative liabilities 263 263 — 263 —

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	14. COMMITMENTS AND CONTINGENCIES Loan commitments The Company is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit. These instruments involve, to varying degrees, elements of market, credit and interest rate risk which are not recognized in the consolidated financial statements. The Company’s exposure to credit loss is represented by the contractual amount of these commitments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance-sheet instruments. The following financial instruments were outstanding, at the dates indicated, whose contract amounts represent credit risk: June 30, 2019 December 31, 2018 (In thousands) Commitments to originate loans $ 178,241 $ 38,404 Unused lines and letters of credit 49,577 45,977 Unadvanced funds on construction loans 13,820 14,175 Overdraft lines of credit 8,266 8,475 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The commitments for lines of credit may expire without being drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The majority of these financial instruments are collateralized by real estate. Other contingencies The Company is not currently a party to any pending legal proceedings that it believes would have a material adverse effect on its financial condition, results of operations or cash flows.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Segment Information	15. SEGMENT INFORMATION The Company reports its activities in one of two business segments, namely Envision Bank (“EB”) and Envision Mortgage (“EM”). Envision Bank operations primarily consist of accepting deposits from customers within the communities surrounding the Bank’s five full service branch offices and investing those funds in residential and commercial real estate loans, home equity lines of credit, construction loans, commercial and industrial loans, and consumer loans. Envision Mortgage’s operations primarily consist of the origination and sale of residential mortgage loans and the servicing of loans sold to government-sponsored entities. A portion of the loans originated by Envision Mortgage are held in the loan portfolio of Envision Bank. S egment information as of and for the three and six months ended June 30, 2019 follows: For the Three Months Ended June 30, 2019 Envision Bank Envision Mortgage Consolidated Total (in thousands) Net interest income $ 4,161 $ 328 $ 4,489 Credit for loan losses (144 ) — (144 ) Net interest income after credit for loan losses 4,305 328 4,633 Non-interest income: Customer service fees 322 40 362 Gain on loan origination and sale activities, net (1) — 5,289 5,289 Mortgage servicing fees, net (92 ) 316 224 Other 97 104 201 Total non-interest income 327 5,749 6,076 Non-interest expenses: Salaries and employee benefits 1,786 4,306 6,092 Occupancy and equipment 370 273 643 Other non-interest expenses 1,298 830 2,128 Total non-interest expenses 3,454 5,409 8,863 Income before income taxes and elimination of inter-segment profit $ 1,178 $ 668 1,846 Elimination of inter-segment profit (221 ) Income before income taxes 1,625 Income tax expense 119 Net income $ 1,506 Total assets June 30, 2019 $ 512,162 $ 140,407 $ 652,569 For the Six Months Ended June 30, 2019 Envision Bank Envision Mortgage Consolidated Total (in thousands) Net interest income $ 8,343 $ 524 $ 8,867 Credit for loan losses (144 ) — (144 ) Net interest income after credit for loan losses 8,487 524 9,011 Non-interest income: Customer service fees 617 74 691 Gain on loan origination and sale activities, net (1) — 8,033 8,033 Mortgage servicing fees, net (180 ) 723 543 Other 222 156 378 Total non-interest income 659 8,986 9,645 Non-interest expenses: Salaries and employee benefits 3,325 8,179 11,504 Occupancy and equipment 770 529 1,299 Other non-interest expenses 2,252 1,686 3,938 Total non-interest expenses 6,347 10,394 16,741 Income (loss) before income taxes and elimination of inter-segment profit $ 2,799 $ (884 ) 1,915 Elimination of inter-segment profit (377 ) Income before income taxes 1,538 Income tax expense 83 Net income $ 1,455 (1) Before elimination of inter-segment profit The information above was derived from the internal management reporting system used by management to measure performance of the segments. The Company’s internal transfer pricing arrangements determined by management primarily consist of the following: 1. EM’s cost of funds is based on the weighted average rate of overnight advances from the FHLBB for the period. 2. EM is credited with service released premiums and a sales premium totaling 1.50% for new loans transferred to EB’s loans held for investment, and a 1.00% fee for HELOC originations. This income for the three and six months ended June 30, 2019 totaled $221,000 and $377,000, respectively. 3. Loan servicing fees are charged to EB by EM based on the number of residential mortgage loans held in portfolio at a rate of 0.14% per annum and amounted to $92,000 and $180,000 for the three and six months ended June 30, 2019, respectively. 4. Certain cost centers provide services to both business segments. The cost centers include Finance, Marketing, IT and Administration. Costs which are common to both business segments are referred to as “indirect costs” and are allocated using relevant benchmarks, e.g. headcount, number of accounts, etc. Segment information as of and for the three and six months ended June 30, 2018 follows: For the Three Months Ended June 30, 2018 Envision Bank Envision Mortgage Consolidated Total (in thousands) Net interest income $ 3,800 $ 233 $ 4,033 Credit for loan losses (90 ) — (90 ) Net interest income after credit for loan losses 3,890 233 4,123 Non-interest income: Customer service fees 410 29 439 Gain on loan origination and sale activities, net (1) — 2,265 2,265 Mortgage servicing fees, net (73 ) 364 291 Other 114 85 199 Total non-interest income 451 2,743 3,194 Non-interest expenses: Salaries and employee benefits 1,612 3,367 4,979 Occupancy and equipment 373 356 729 Other non-interest expenses 1,227 977 2,204 Total non-interest expenses 3,212 4,700 7,912 Income (loss) before income taxes and elimination of inter-segment profit $ 1,129 $ (1,724 ) (595 ) Elimination of inter-segment profit (411 ) Loss before income taxes (1,006 ) Income tax expense 4 Net loss $ (1,010 ) Total assets June 30, 2018 $ 489,214 $ 76,695 $ 565,909 For the Six Months Ended June 30, 2018 Envision Bank Envision Mortgage Consolidated Total (in thousands) Net interest income $ 7,539 $ 476 $ 8,015 Provision for loan losses 5 — 5 Net interest income after provision for loan losses 7,534 476 8,010 Non-interest income: Customer service fees 711 28 739 Gain on loan origination and sale activities, net (1) — 4,085 4,085 Mortgage servicing fees, net (141 ) 766 625 Other 248 177 425 Total non-interest income 818 5,056 5,874 Non-interest expenses: Salaries and employee benefits 3,248 6,167 9,415 Occupancy and equipment 773 654 1,427 Other non-interest expenses 2,238 1,829 4,067 Total non-interest expenses 6,259 8,650 14,909 Income (loss) before income taxes and elimination of inter-segment profit $ 2,093 $ (3,118 ) (1,025 ) Elimination of inter-segment profit (684 ) Loss before income taxes (1,709 ) Income tax expense 8 Net loss $ (1,717 ) (1) Before elimination of inter-segment profit The information above was derived from the internal management reporting system used by management to measure performance of the segments. The Company’s internal transfer pricing arrangements determined by management primarily consist of the following: 1. EM’s cost of funds is based on the weighted average rate of overnight advances from the FHLBB for the period. 2. EM is credited with service released premiums and a sales premium totaling 1.50% for new loans transferred to EB’s loans held for investment, and a 1.00% fee for HELOC originations. This income for the three and six months ended June 30, 2018 totaled $411,000 and $684,000, respectively. 3. Loan servicing fees are charged to EB by EM based on the number of residential mortgage loans held in portfolio at a rate of 0.14% per annum and amounted to $73,000 and $141,000 for the three and six months ended June 30, 2018, respectively. 4. Certain cost centers provide services to both business segments. The cost centers include Finance, Marketing, IT and Administration. Costs which are common to both business segments are referred to as “indirect costs” and are allocated using relevant benchmarks, e.g. headcount, number of accounts, etc.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	6 Months Ended
	Jun. 30, 2019
Revenue From Contract With Customer [Abstract]
Revenue from Contracts with Customers	16. REVENUE FROM CONTRACTS WITH CUSTOMERS Revenue from contracts with customers within the scope of Accounting Standards Codification (“ASC”) ("Topic 606") is measured based on the consideration specified in the contract and excludes amounts collected on behalf of third parties. The Company recognizes revenue from contracts with customers when it satisfies its performance obligations. The Company’s performance obligations are generally satisfied as services are rendered and can either be satisfied at a point in time or over time. Unsatisfied performance obligations at the report date are not material to our consolidated financial statements. In certain cases, other parties are involved with providing services to our customers. If the Company is a principal in the transaction (providing services itself or through a third party on its behalf), revenues are reported based on the gross consideration received from the customer and any related expenses are reported in noninterest expense. If the Company is an agent in the transaction (referring to another party to provide services), the Company reports its net fee or commission retained as revenue. Accounting Policy Updates The Company early adopted Topic 606, “Revenue from Contracts with Customers” on January 1, 2019 and has applied the guidance to all contracts within the scope of Topic 606 as of that date. As a result, the Company has modified its accounting policy for revenue recognition as detailed in this Note. As discussed in Note 1, there were no material changes to our consolidated financial statements at or for the three and six months ended June 30, 2019 as a result of adopting Topic 606. The Company applied the practical expedient pertaining to contracts with original expected duration of one year or less and does not disclose information about remaining performance obligations on such contracts. The Company also applied the practical expedient pertaining to contracts for which, at contract inception, the period between when the entity transfers the services and when the customer pays for those services will be one year or less. As such, the Company does not adjust the consideration from customers for the effects of a significant financing component. A substantial portion of the Company’s revenue is specifically excluded from the scope of Topic 606. This exclusion is associated with financial instruments, including interest income on loans and investment securities, in addition to loan derivative income and gains on loan and investment sales. For the revenue that is within the scope of Topic 606, the following is a description of principal activities from which the Company generates its revenue from contracts with customers, separated by the timing of revenue recognition. Revenue Recognized at a Point in Time The Company recognizes revenue that is transactional in nature and such revenue is earned at a point in time. Revenue that is recognized at a point in time includes card interchange fees (fee income related to debit card transactions), ATM fees, wire transfer fees, overdraft charge fees, and stop-payment and returned check fees. Additionally, revenue is collected from loan fees, such as application fees. Such revenue is derived from transactional information and is recognized as revenue immediately as the transactions occur or upon providing the service to complete the customer’s transaction. Revenue Recognized Over Time The Company recognizes revenue over a period of time, generally monthly, as services are performed and performance obligations are satisfied. Such revenue includes service charges on deposit accounts. Fee revenue from service charges on deposit accounts represent the service charges assessed to customers who hold deposit accounts at the Bank.

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Policies)	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Recent Accounting Pronouncements	On January 1, 2019, the Company early adopted Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers. In January 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-01, Financial Instruments In February 2016, FASB issued ASU 2016-02, Leases In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses In April 2017, the FASB issued ASU 2017-08 Receivables – Non-refundable Fees and Other Costs In August 2018, the FASB issued ASU 2018-13 Fair Value Measurement – Changes to the Disclosure Requirements for Fair Value Measurement, .

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Components of Accumulated Other Comprehensive Loss and Related Tax Effects	The components of accumulated other comprehensive loss, included in total stockholders’ equity, are as follows: June 30, December 31, 2019 2018 (In thousands) Securities available for sale: Net unrealized gain (loss) $ 60 $ (1,334 ) Tax effect (313 ) (313 ) Net-of-tax amount (253 ) (1,647 ) Supplemental retirement plan Unrecognized net actuarial loss (587 ) (605 ) Unrecognized net prior service credit 353 395 (234 ) (210 ) Tax effect (47 ) (47 ) Net-of-tax amount (281 ) (257 ) Accumulated other comprehensive loss $ (534 ) $ (1,904 )

Securities Available for Sale (

Securities Available for Sale (Tables)	6 Months Ended
	Jun. 30, 2019
Investments Debt And Equity Securities [Abstract]
Schedule of amortized cost and fair value of securities	The amortized cost and fair value of securities available for sale, including gross unrealized gains and losses, are as follows: Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value (In thousands) June 30, 2019 Debt securities: U.S. Government-sponsored enterprises $ 4,000 $ 21 $ (10 ) $ 4,011 Corporate 1,519 19 (2 ) 1,536 Municipal 989 11 — 1,000 Residential mortgage-backed securities: U.S. Government-sponsored enterprises 25,043 337 (255 ) 25,125 Commercial mortgage-backed securities: U.S. Government-sponsored enterprises 9,036 — (86 ) 8,950 U.S. Government-guaranteed 1,655 — (1 ) 1,654 Collateralized mortgage obligations: U.S. Government-sponsored enterprises 1,540 20 — 1,560 U.S. Government-guaranteed 4,491 19 (27 ) 4,483 Total debt securities 48,273 427 (381 ) 48,319 Mutual fund 518 14 — 532 Total securities available for sale $ 48,791 $ 441 $ (381 ) $ 48,851 December 31, 2018 Debt securities: U.S. Government-sponsored enterprises $ 3,999 $ 13 $ (31 ) $ 3,981 Corporate 1,524 6 (18 ) 1,512 Municipal 1,489 18 — 1,507 Residential mortgage-backed securities: U.S. Government-sponsored enterprises 26,989 71 (754 ) 26,306 Commercial mortgage-backed securities: U.S. Government-sponsored enterprises 9,094 — (487 ) 8,607 U.S. Government-guaranteed 1,796 — (33 ) 1,763 Collateralized mortgage obligations: U.S. Government-sponsored enterprises 1,642 — (17 ) 1,625 U.S. Government-guaranteed 4,839 2 (104 ) 4,737 Total debt securities 51,372 110 (1,444 ) 50,038 Mutual fund 518 — — 518 Total securities available for sale $ 51,890 $ 110 $ (1,444 ) $ 50,556
Investments Classified by Contractual Maturity Date	The amortized cost and fair value of debt securities by contractual maturity at June 30, 2019 are presented below. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Amortized Fair Cost Value (In thousands) Within 1 year $ 3,000 $ 2,997 After 1 year through 5 years 2,669 2,700 After 5 years through 10 years 839 850 6,508 6,547 Mortgage-backed securities 41,765 41,772 $ 48,273 $ 48,319
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	Information pertaining to securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous loss position, follows: Less Over Twelve Months Gross Gross Unrealized Fair Unrealized Fair Losses Value Losses Value June 30, 2019 (In thousands) Debt securities: U.S. Government-sponsored enterprises $ — $ — $ (10 ) $ 1,990 Corporate (2 ) 513 — — Residential mortgage-backed securities: U.S. Government-sponsored enterprises — — (255 ) 11,060 Commercial mortgage-backed securities: U.S. Government-sponsored enterprises — — (86 ) 8,950 U.S. Government-guaranteed (1 ) 1,654 — — Collateralized mortgage obligations: U.S. Government-guaranteed — — (27 ) 2,791 Total debt securities $ (3 ) $ 2,167 $ (378 ) $ 24,791 December 31, 2018 Debt securities: U.S. Government-sponsored enterprises $ — $ — $ (31 ) $ 1,969 Corporate (5 ) 497 (13 ) 506 Residential mortgage-backed securities: U.S. Government-sponsored enterprises (6 ) 7,038 (748 ) 12,981 Commercial mortgage-backed securities: U.S. Government-sponsored enterprises — — (487 ) 8,607 U.S. Government-guaranteed — — (33 ) 1,763 Collateralized mortgage obligations: U.S. Government-sponsored enterprises — — (17 ) 1,625 U.S. Government-guaranteed — — (104 ) 3,879 Total debt securities $ (11 ) $ 7,535 $ (1,433 ) $ 31,330

Loans and Allowance for Loan _2

Loans and Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2019
Receivables [Abstract]
Summary of Loan Portfolio	A summary of the loan portfolio is as follows: June 30, 2019 December 31, 2018 (In thousands) Mortgage loans on real estate: Residential: One-to-four family $ 229,079 $ 246,756 Home equity loans and lines of credit 43,162 43,545 Commercial 114,547 113,642 Construction 38,733 42,139 425,521 446,082 Commercial and industrial 11,554 21,285 Consumer 17,470 19,407 Total loans 454,545 486,774 Allowance for loan losses (4,154 ) (4,437 ) Net deferred loan costs and fees, and purchase premiums 1,479 1,509 $ 451,870 $ 483,846
Summary of Activity in the Allowance for Loan Losses by Loan Category	The following tables present activity in the allowance for loan losses by loan category for the three and six months ended June 30, 2019 and 2018, and allocation of the allowance to each category as of June 30, 2019 and December 31, 2018: Second Residential Mortgages Commercial Commercial 1-4 Family and Real Estate Construction and Industrial Consumer Total (In thousands) Three Months Ended June 30, 2019 Allowance at March 31, 2019 $ 1,086 $ 292 $ 1,642 $ 803 $ 248 $ 211 $ 4,282 Provision (credit) for loan losses (83 ) 5 (17 ) (48 ) 16 (17 ) (144 ) Loans charged-off — — — — — (3 ) (3 ) Recoveries 15 — — — — 4 19 Balance at June 30, 2019 $ 1,018 $ 297 $ 1,625 $ 755 $ 264 $ 195 $ 4,154 Three Months Ended June 30, 2018 Allowance at March 31, 2018 $ 876 $ 365 $ 1,700 $ 386 $ 319 $ 198 $ 3,844 Provision (credit) for loan losses 88 (85 ) (195 ) 57 (21 ) 66 (90 ) Loans charged-off — — — — — (22 ) (22 ) Recoveries 5 — — — — 5 10 Balance at June 30, 2018 $ 969 $ 280 $ 1,505 $ 443 $ 298 $ 247 $ 3,742 Six Months Ended June 30, 2019 Allowance at December 31, 2018 $ 1,092 $ 292 $ 1,648 $ 765 $ 265 $ 375 $ 4,437 Provision (credit) for loan losses (95 ) 5 (23 ) (10 ) (1 ) (20 ) (144 ) Loans charged-off — — — — — (168 ) (168 ) Recoveries 21 — — — — 8 29 Balance at June 30, 2019 $ 1,018 $ 297 $ 1,625 $ 755 $ 264 $ 195 $ 4,154 Six Months Ended June 30, 2018 Allowance at December 31, 2017 $ 854 $ 359 $ 1,620 $ 351 $ 335 $ 218 $ 3,737 Provision (credit) for loan losses 85 (79 ) (115 ) 92 (37 ) 59 5 Loans charged-off — — — — — (37 ) (37 ) Recoveries 30 — — — — 7 37 Balance at June 30, 2018 $ 969 $ 280 $ 1,505 $ 443 $ 298 $ 247 $ 3,742
Summary of Additional Information Pertaining to the Allowance for Loan Losses	Additional information pertaining to the allowance for loan losses at June 30, 2019 and December 31, 2018 is as follows: Second Residential Mortgages Commercial Commercial 1-4 Family and Real Estate Construction and Industrial Consumer Total June 30, 2019 (In thousands) Allowance for impaired loans $ 102 $ — $ — $ — $ — $ 24 $ 126 Allowance for non-impaired loans 916 297 1,625 755 264 171 4,028 Total allowance for loan losses $ 1,018 $ 297 $ 1,625 $ 755 $ 264 $ 195 $ 4,154 Impaired loans $ 5,534 $ 337 $ 49 $ — $ — $ 49 $ 5,969 Non-impaired loans 223,545 42,825 114,498 38,733 11,554 17,421 448,576 Total loans $ 229,079 $ 43,162 $ 114,547 $ 38,733 $ 11,554 $ 17,470 $ 454,545 December 31, 2018 Allowance for impaired loans $ 108 $ — $ — $ — $ — $ 174 $ 282 Allowance for non-impaired loans 984 292 1,648 765 265 201 4,155 Total allowance for loan losses $ 1,092 $ 292 $ 1,648 $ 765 $ 265 $ 375 $ 4,437 Impaired loans $ 6,291 $ 408 $ 52 $ — $ — $ 199 $ 6,950 Non-impaired loans 240,465 43,137 113,590 42,139 21,285 19,208 479,824 Total loans $ 246,756 $ 43,545 $ 113,642 $ 42,139 $ 21,285 $ 19,407 $ 486,774
Schedule of Past Due and Non-Accrual Loans	The following is a summary of past due and non-accrual loans at June 30, 2019 and December 31, 2018: 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days or More Past Due Total Past Due Non-accrual Loans (In thousands) June 30, 2019 Residential one-to-four family $ 1,042 $ 43 $ — $ 1,085 $ 1,978 Home equity loans and lines of credit 169 40 — 209 337 Commercial real estate — — — — — Construction — — — — — Commercial and industrial — — — — — Consumer 72 23 — 95 — Total $ 1,283 $ 106 $ — $ 1,389 $ 2,315 December 31, 2018 Residential one-to-four family $ 655 $ 207 $ 635 $ 1,497 $ 2,474 Home equity loans and lines of credit 520 — — 520 407 Commercial real estate — — — — — Construction — — — — — Commercial and industrial — — — — — Consumer 25 4 — 29 149 Total $ 1,200 $ 211 $ 635 $ 2,046 $ 3,030
Summary of Impaired Loans and Additional Information Pertaining to Impaired Loans	The following is a summary of impaired loans at June 30, 2019 and December 31, 2018: Recorded Investment Unpaid Principal Balance Related Allowance (In thousands) June 30, 2019 Impaired loans without a valuation allowance: Residential one-to-four family $ 3,717 $ 3,717 Home equity loans and lines of credit 337 337 Commercial real estate 49 49 Total 4,103 4,103 Impaired loans with a valuation allowance: Residential one-to-four family 1,817 1,817 $ 102 Consumer 49 49 24 1,866 1,866 126 Total impaired loans $ 5,969 $ 5,969 $ 126 December 31, 2018 Impaired loans without a valuation allowance: Residential one-to-four family $ 4,280 $ 4,280 Home equity loans and lines of credit 408 408 Commercial real estate 52 52 Total 4,740 4,740 Impaired loans with a valuation allowance: Residential one-to-four family 2,011 2,011 $ 108 Home equity loans and lines of credit 199 199 174 Total 2,210 2,210 282 Total impaired loans $ 6,950 $ 6,950 $ 282 Additional information pertaining to impaired loans follows: Average Interest Cash Basis Recorded Income Interest Investment Recognized Recognized (In thousands) Six Months Ended June 30, 2019 Residential one-to-four family $ 5,630 $ 126 $ 51 Home equity loans and lines of credit 437 10 10 Commercial real estate 187 2 — Consumer 49 1 — Total $ 6,303 $ 139 $ 61 Six Months Ended June 30, 2018 Residential one-to-four family $ 4,965 $ 116 $ 40 Home equity loans and lines of credit 262 3 25 Commercial real estate 312 9 — Total $ 5,539 $ 128 $ 65 Three Months Ended June 30, 2019 Residential one-to-four family $ 5,498 $ 49 $ 19 Home equity loans and lines of credit 337 4 4 Commercial real estate 187 1 — Consumer 49 — — Total $ 6,071 $ 54 $ 23 Three Months Ended June 30, 2018 Residential one-to-four family $ 4,988 $ 62 $ 20 Home equity loans and lines of credit 253 — 4 Commercial real estate 294 4 — Total $ 5,535 $ 66 $ 24
Summary of Company's Loans by Risk Rating	The following table presents the Company’s loans by risk rating at the dates indicated: June 30, 2019 December 31, 2018 Commercial Real Construction Commercial and Industrial Commercial Real Construction Commercial and Industrial (In thousands) Loans rated 1 - 3B (Pass rated) $ 114,342 $ 38,733 $ 10,459 $ 113,642 $ 42,139 $ 21,285 Loans rated 4 205 — 1,095 — — — Loans rated 5 - 7 — — — — — — $ 114,547 $ 38,733 $ 11,554 $ 113,642 $ 42,139 $ 21,285

Loan Servicing (Tables)

Loan Servicing (Tables)	6 Months Ended
	Jun. 30, 2019
Transfers And Servicing [Abstract]
Summary of Activity Relating to Mortgage Servicing Rights	The following table summarizes the activity relating to mortgage servicing rights for the six months ended June 30, 2019 and 2018 (in thousands): June 30, 2019 June 30, 2018 Mortgage servicing rights: Balance at beginning of year $ 7,794 $ 6,487 Additions through originations 1,100 851 Amortization (572 ) (480 ) Balance at end of period $ 8,322 $ 6,858 Valuation allowance: Balance at beginning of year $ 8 $ 90 Provision (credit) 113 (77 ) Balance at end of period $ 121 $ 13 Amortized cost, net $ 8,201 $ 6,845 Fair value $ 8,356 $ 7,380

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Schedule of Calculation of Average Number of Shares Outstanding Used to Calculate Basic and Diluted Income (Loss) Per Share	The following table sets forth the calculation of the average number of shares outstanding used to calculate the basic and diluted income (loss) per share for the periods indicated: Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Average number of common shares outstanding 5,871,321 6,005,578 5,880,309 6,021,802 Less: Average unallocated ESOP shares (406,116 ) (424,895 ) (408,463 ) (427,243 ) 5,465,205 5,580,683 5,471,846 5,594,559

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Grants of Options to Purchase Shares of Common Stock	During the six months ended June 30, 2019 and 2018 the Company made the following grants of options to purchase shares of common stock and used the following assumptions in measuring the fair value of such grants: 2019 2018 Options granted 57,252 27,000 Vesting period (years) 1-5 3-5 Expiration period (years) 10 10 Expected volatility 29.87 % 29.87 % Expected life (years) 6.5 6.5 Expected dividend yield — — Risk free interest rate 2.37% - 2.61% 2.68% -2.77% Option fair value $2.99 - $5.83 $5.79
Summary of Stock Options Activity	A summary of stock option activity for the six months ended June 30, 2019 is presented in the table below: Options Stock Option Grants Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Balance at January 1, 2019 312,705 $ 14.78 8.73 $ — Granted 57,252 14.93 8.34 — Expired (3,250 ) 14.66 — — Balance at June 30, 2019 366,707 $ 14.83 8.54 $ 135,971 Exercisable at June 30, 2019 64,018 $ 14.76 — $ 24,942 Unrecognized compensation cost (inclusive of directors' options) $ 1,189,000 Weighted average remaining recognition period (years) 3.23
Summary of Activity in Restricted Stock Awards Under Equity Plan	The following table presents the activity in restricted stock awards under the Equity Plan for the six months ended June 30, 2019: Restricted Stock Awards Weighted Average Grant Price Restricted stock awards at January 1, 2019 126,694 $ 14.66 Granted 33,335 15.07 Vested — — Forfeited (2,500 ) 15.00 Restricted stock awards at June 30, 2019 157,529 $ 14.74 Unrecognized compensation cost $ 1,938,000 Weighted average remaining recognition period (years) 3.52

Fair Value of Assets and Liab_2

Fair Value of Assets and Liabilities (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Recorded at Fair Value on a Recurring Basis	Assets and liabilities recorded at fair value on a recurring basis are summarized below. Total Level 1 Level 2 Level 3 Fair (In thousands) June 30, 2019 Assets: Securities available for sale: Debt securities $ — $ 48,319 $ — $ 48,319 Mutual fund — 532 — 532 Portfolio loans (fair value option) — 4,986 — 4,986 Loans held for sale (fair value option) — 102,784 — 102,784 Derivative loan commitments — 2,220 — 2,220 Forward loan sale commitments — 158 — 158 Liabilities: Forward loan sale commitments, including TBAs — 527 — 527 December 31, 2018 Assets: Securities available for sale: Debt securities $ — $ 50,038 $ — $ 50,038 Mutual fund — 518 — 518 Portfolio loans (fair value option) — 3,680 — 3,680 Loans held for sale (fair value option) — 38,474 — 38,474 Derivative loan commitments — 627 — 627 Forward loan sale commitments — 10 — 10 Liabilities: Forward loan sale commitments, including TBAs — 263 — 263
Schedule of Assets Recorded at Fair Value on a Non-Recurring Basis	The following table summarizes the fair value hierarchy used to determine each adjustment and the carrying value of the related assets as of June 30, 2019 and December 31, 2018. Period Ended June 30, 2019 June 30, 2019 Level 1 Level 2 Level 3 Total Gains (Losses) (In thousands) Collateral dependent impaired loans $ — $ — $ 952 $ — Mortgage servicing rights — 8,201 — (113 ) Foreclosed real estate — — 90 — $ — $ 8,201 $ 1,042 $ (113 ) December 31, 2018 Level 1 Level 2 Level 3 (In thousands) Collateral dependent impaired loans $ — $ — $ 1,352 Mortgage servicing rights — 7,786 — Foreclosed real estate — — 65 $ — $ 7,786 $ 1,417
Summary of Carrying Values, Estimated Fair Values and Placement in Fair Value Hierarchy of Company's Financial Instruments	The estimated fair values, and related carrying amounts, of the Company’s financial instruments are presented below. Certain financial instruments and all non-financial instruments are exempt from disclosure requirements. Accordingly, the aggregate fair value amounts presented herein do not represent the underlying fair value of the Company. This table excludes financial instruments for which the carrying amount approximates fair value. Financial assets for which the fair value approximates carrying value include cash and cash equivalents, and accrued interest receivable. Financial liabilities for which the fair value approximates carrying value include mortgagors’ escrow accounts and accrued interest payable. June 30, 2019 Carrying Fair Amount Value Level 1 Level 2 Level 3 (In thousands) Financial assets: Certificates of deposit $ 2,205 $ 2,202 $ — $ 2,202 $ — Securities available for sale 48,851 48,851 — 48,851 — Loans held for sale 102,784 102,784 — 102,784 — Loans, net 451,870 452,181 — — 452,181 Derivative assets 2,378 2,378 — 2,378 — Financial liabilities: Deposits $ 441,653 $ 441,585 $ — $ 441,585 $ — FHLBB advances 121,553 121,675 — 121,675 — Derivative liabilities 527 527 — 527 — December 31, 2018 Carrying Fair Amount Value Level 1 Level 2 Level 3 (In thousands) Financial assets: Certificates of deposit $ 2,205 $ 2,196 $ — $ 2,196 $ — Securities available for sale 50,556 50,556 — 50,556 — Loans held for sale 38,474 38,474 — 38,474 — Loans, net 483,846 473,612 — — 473,612 Derivative assets 637 637 — 637 — Financial liabilities: Deposits $ 437,130 435,964 $ — $ 435,964 $ — FHLBB advances 89,036 88,894 — 88,894 — Derivative liabilities 263 263 — 263 —

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2019
Commitments And Contingencies Disclosure [Abstract]
Summary of Financial Instruments Outstanding Contract Amounts Represent Credit Risk	The following financial instruments were outstanding, at the dates indicated, whose contract amounts represent credit risk: June 30, 2019 December 31, 2018 (In thousands) Commitments to originate loans $ 178,241 $ 38,404 Unused lines and letters of credit 49,577 45,977 Unadvanced funds on construction loans 13,820 14,175 Overdraft lines of credit 8,266 8,475

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Summary of Segment Information	S egment information as of and for the three and six months ended June 30, 2019 follows: For the Three Months Ended June 30, 2019 Envision Bank Envision Mortgage Consolidated Total (in thousands) Net interest income $ 4,161 $ 328 $ 4,489 Credit for loan losses (144 ) — (144 ) Net interest income after credit for loan losses 4,305 328 4,633 Non-interest income: Customer service fees 322 40 362 Gain on loan origination and sale activities, net (1) — 5,289 5,289 Mortgage servicing fees, net (92 ) 316 224 Other 97 104 201 Total non-interest income 327 5,749 6,076 Non-interest expenses: Salaries and employee benefits 1,786 4,306 6,092 Occupancy and equipment 370 273 643 Other non-interest expenses 1,298 830 2,128 Total non-interest expenses 3,454 5,409 8,863 Income before income taxes and elimination of inter-segment profit $ 1,178 $ 668 1,846 Elimination of inter-segment profit (221 ) Income before income taxes 1,625 Income tax expense 119 Net income $ 1,506 Total assets June 30, 2019 $ 512,162 $ 140,407 $ 652,569 For the Six Months Ended June 30, 2019 Envision Bank Envision Mortgage Consolidated Total (in thousands) Net interest income $ 8,343 $ 524 $ 8,867 Credit for loan losses (144 ) — (144 ) Net interest income after credit for loan losses 8,487 524 9,011 Non-interest income: Customer service fees 617 74 691 Gain on loan origination and sale activities, net (1) — 8,033 8,033 Mortgage servicing fees, net (180 ) 723 543 Other 222 156 378 Total non-interest income 659 8,986 9,645 Non-interest expenses: Salaries and employee benefits 3,325 8,179 11,504 Occupancy and equipment 770 529 1,299 Other non-interest expenses 2,252 1,686 3,938 Total non-interest expenses 6,347 10,394 16,741 Income (loss) before income taxes and elimination of inter-segment profit $ 2,799 $ (884 ) 1,915 Elimination of inter-segment profit (377 ) Income before income taxes 1,538 Income tax expense 83 Net income $ 1,455 (1) Before elimination of inter-segment profit Segment information as of and for the three and six months ended June 30, 2018 follows: For the Three Months Ended June 30, 2018 Envision Bank Envision Mortgage Consolidated Total (in thousands) Net interest income $ 3,800 $ 233 $ 4,033 Credit for loan losses (90 ) — (90 ) Net interest income after credit for loan losses 3,890 233 4,123 Non-interest income: Customer service fees 410 29 439 Gain on loan origination and sale activities, net (1) — 2,265 2,265 Mortgage servicing fees, net (73 ) 364 291 Other 114 85 199 Total non-interest income 451 2,743 3,194 Non-interest expenses: Salaries and employee benefits 1,612 3,367 4,979 Occupancy and equipment 373 356 729 Other non-interest expenses 1,227 977 2,204 Total non-interest expenses 3,212 4,700 7,912 Income (loss) before income taxes and elimination of inter-segment profit $ 1,129 $ (1,724 ) (595 ) Elimination of inter-segment profit (411 ) Loss before income taxes (1,006 ) Income tax expense 4 Net loss $ (1,010 ) Total assets June 30, 2018 $ 489,214 $ 76,695 $ 565,909 For the Six Months Ended June 30, 2018 Envision Bank Envision Mortgage Consolidated Total (in thousands) Net interest income $ 7,539 $ 476 $ 8,015 Provision for loan losses 5 — 5 Net interest income after provision for loan losses 7,534 476 8,010 Non-interest income: Customer service fees 711 28 739 Gain on loan origination and sale activities, net (1) — 4,085 4,085 Mortgage servicing fees, net (141 ) 766 625 Other 248 177 425 Total non-interest income 818 5,056 5,874 Non-interest expenses: Salaries and employee benefits 3,248 6,167 9,415 Occupancy and equipment 773 654 1,427 Other non-interest expenses 2,238 1,829 4,067 Total non-interest expenses 6,259 8,650 14,909 Income (loss) before income taxes and elimination of inter-segment profit $ 2,093 $ (3,118 ) (1,025 ) Elimination of inter-segment profit (684 ) Loss before income taxes (1,709 ) Income tax expense 8 Net loss $ (1,717 ) (1) Before elimination of inter-segment profit

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss and Related Tax Effects (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss)	$ 742	$ (184)	$ 1,370	$ (1,300)
Accumulated other comprehensive loss, net of tax	$ (534)		(534)		$ (1,904)
Accumulated Net Investment Gain (Loss) Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss)			60		(1,334)
Other comprehensive Loss, Tax effect			(313)		(313)
Total other comprehensive income (loss)			(253)		(1,647)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss)			(587)		(605)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss)			353		395
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss)			(234)		(210)
Other comprehensive Loss, Tax effect			(47)		(47)
Total other comprehensive income (loss)			$ (281)		$ (257)

Securities Available for Sale -

Securities Available for Sale - Schedule of Amortized Cost and Fair Value of Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 48,791	$ 51,890
Gross Unrealized Gains	441	110
Gross Unrealized Losses	(381)	(1,444)
Fair Value	48,851	50,556
Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	48,273	51,372
Gross Unrealized Gains	427	110
Gross Unrealized Losses	(381)	(1,444)
Fair Value	48,319	50,038
Debt Securities [Member] | US Government-sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,000	3,999
Gross Unrealized Gains	21	13
Gross Unrealized Losses	(10)	(31)
Fair Value	4,011	3,981
Debt Securities [Member] | Corporate [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,519	1,524
Gross Unrealized Gains	19	6
Gross Unrealized Losses	(2)	(18)
Fair Value	1,536	1,512
Debt Securities [Member] | Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	989	1,489
Gross Unrealized Gains	11	18
Fair Value	1,000	1,507
Debt Securities [Member] | Residential Mortgage-backed Securities, US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	25,043	26,989
Gross Unrealized Gains	337	71
Gross Unrealized Losses	(255)	(754)
Fair Value	25,125	26,306
Debt Securities [Member] | Commercial Mortgage-backed Securities, US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9,036	9,094
Gross Unrealized Losses	(86)	(487)
Fair Value	8,950	8,607
Debt Securities [Member] | Commercial Mortgage Backed Securities, U.S. Government-guaranteed [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,655	1,796
Gross Unrealized Losses	(1)	(33)
Fair Value	1,654	1,763
Debt Securities [Member] | Collateralized Mortgage Obligations, US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,540	1,642
Gross Unrealized Gains	20
Gross Unrealized Losses		(17)
Fair Value	1,560	1,625
Debt Securities [Member] | Collateralized Mortgage Obligations, US Government Guaranteed [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,491	4,839
Gross Unrealized Gains	19	2
Gross Unrealized Losses	(27)	(104)
Fair Value	4,483	4,737
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	518	518
Gross Unrealized Gains	14
Fair Value	$ 532	$ 518

Securities Available for Sale_2

Securities Available for Sale - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2019USD ($)Debt_Security	Jun. 30, 2018USD ($)
Investments Debt And Equity Securities [Abstract]
Proceeds from sales of available-for-sale securities	$ 0	$ 8,958,000
Available-for-sale securities, gross realized gains		49,000
Available-for-sale securities, gross realized losses		$ 0
Number of debt securities with unrealized losses | Debt_Security	22
Unrealized losses debt securities aggregate depreciation percentage	1.39%

Securities Available for Sale_3

Securities Available for Sale - Investments Classified by Contractual Maturity Date (Detail) $ in Thousands	Jun. 30, 2019USD ($)
Available-for-sale Securities, Debt Maturities, Amortized Cost
Within 1 year	$ 3,000
After 1 year through 5 years	2,669
After 5 years through 10 years	839
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Total	6,508
Mortgage-backed securities	41,765
Available-for-sale Debt Securities, Amortized Cost Basis, Total	48,273
Available-for-sale Securities, Debt Maturities, Fair Value
Within 1 year	2,997
After 1 year through 5 years	2,700
After 5 years through 10 years	850
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Fair Value Total	6,547
Mortgage-backed securities	41,772
Available-for-sale Securities, Debt Securities, Fair Value Total	$ 48,319

Securities Available for Sale_4

Securities Available for Sale - Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value (Detail) - Debt Securities [Member] - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	$ (3)	$ (11)
Less Than Twelve Months, Fair Value	2,167	7,535
Over Twelve Months, Gross Unrealized Losses	(378)	(1,433)
Over Twelve Months, Fair Value	24,791	31,330
US Government-sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Over Twelve Months, Gross Unrealized Losses	(10)	(31)
Over Twelve Months, Fair Value	1,990	1,969
Corporate [Member]
Schedule of Available-for-sale Securities [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	(2)	(5)
Less Than Twelve Months, Fair Value	513	497
Over Twelve Months, Gross Unrealized Losses		(13)
Over Twelve Months, Fair Value		506
Residential Mortgage-backed Securities, US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Less Than Twelve Months, Gross Unrealized Losses		(6)
Less Than Twelve Months, Fair Value		7,038
Over Twelve Months, Gross Unrealized Losses	(255)	(748)
Over Twelve Months, Fair Value	11,060	12,981
Commercial Mortgage-backed Securities, US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Over Twelve Months, Gross Unrealized Losses	(86)	(487)
Over Twelve Months, Fair Value	8,950	8,607
Commercial Mortgage Backed Securities, U.S. Government-guaranteed [Member]
Schedule of Available-for-sale Securities [Line Items]
Less Than Twelve Months, Gross Unrealized Losses	(1)
Less Than Twelve Months, Fair Value	1,654
Over Twelve Months, Gross Unrealized Losses		(33)
Over Twelve Months, Fair Value		1,763
Collateralized Mortgage Obligations, US Government Guaranteed [Member]
Schedule of Available-for-sale Securities [Line Items]
Over Twelve Months, Gross Unrealized Losses	(27)	(104)
Over Twelve Months, Fair Value	$ 2,791	3,879
Collateralized Mortgage Obligations, US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Over Twelve Months, Gross Unrealized Losses		(17)
Over Twelve Months, Fair Value		$ 1,625

Loans and Allowance for Loan _3

Loans and Allowance for Loan Losses - Summary of Loan Portfolio (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 454,545	$ 486,774
Allowance for loan losses	(4,154)	(4,437)
Net deferred loan costs and fees, and purchase premiums	1,479	1,509
Net loans	451,870	483,846
Real Estate Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	425,521	446,082
Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	114,547	113,642
Commercial Real Estate Loans [Member] | Real Estate Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	114,547	113,642
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	11,554	21,285
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	17,470	19,407
One-to-Four Family [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	229,079	246,756
One-to-Four Family [Member] | Residential Real Estate [Member] | Real Estate Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	229,079	246,756
Home Equity Loans and Lines of Credit [Member] | Residential Real Estate [Member] | Real Estate Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	43,162	43,545
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	38,733	42,139
Construction [Member] | Real Estate Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 38,733	$ 42,139

Loans and Allowance for Loan _4

Loans and Allowance for Loan Losses - Additional Information (Detail)	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)TDR	Jun. 30, 2018USD ($)TDR	Aug. 07, 2019USD ($)	Jul. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transfer of portfolio loans to held for sale	$ 28,600,000			$ 28,608,000
Fair value adjustment included in gain on loan orgination and sale activities		$ 170,000
Impaired loans, additional funds committed	0	0		$ 0
Loans subject to troubled debt restructurings | TDR				2	0
Troubled debt restructuring amount				$ 3,309,000	$ 4,079,000
Changes to allowance for loan losses	0	0	$ 0	$ 0	0
Minimum past due days for loan rating				90 days
Total loans	454,545,000	454,545,000		$ 454,545,000				$ 486,774,000
30 - 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings defaulted over 30 days past due		0	0	0	0
Non Accrual Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructuring amount				649,000	$ 1,107,000
Home Equity Loans and Lines of Credit [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	337,000	337,000		$ 337,000				407,000
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans subject to troubled debt restructurings | TDR				16	19
Loans subject to troubled debt restructurings, amount	3,260,000	3,260,000	3,959,000	$ 3,260,000	$ 3,959,000
Residential Real Estate [Member] | Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructuring, interest rate concession period				3 months
Residential Real Estate [Member] | Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructuring, interest rate concession period				30 years
Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans subject to troubled debt restructurings | TDR				1	2
Loans subject to troubled debt restructurings, amount	49,000	49,000	$ 120,000	$ 49,000	$ 120,000
Total loans	114,547,000	114,547,000		114,547,000				113,642,000
Commercial Real Estate Loans [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	205,000	205,000		$ 205,000
Commercial Real Estate Loans [Member] | Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructuring, interest rate concession period				1 year
Residential Mortgage [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,411,000	2,411,000		$ 2,411,000				2,469,000
Residential Mortgage [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	600,000	600,000		600,000				936,000
Residential Mortgage [Member] | Subsequent Event [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Transferred loans committed to sell						$ 6,800,000	$ 21,800,000
Other Modified Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructuring amount				87,000,000
Consumer Loans [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans								149,000
Consumer Loans [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 49,000	$ 49,000		$ 49,000				$ 50,000

Loans and Allowance for Loan _5

Loans and Allowance for Loan Losses - Summary of Activity in the Allowance for Loan Losses by Loan Category (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 4,282	$ 3,844	$ 4,437	$ 3,737
Provision (credit) for loan losses	(144)	(90)	(144)	5
Loans charged-off	(3)	(22)	(168)	(37)
Recoveries	19	10	29	37
Ending balance	4,154	3,742	4,154	3,742
Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,642	1,700	1,648	1,620
Provision (credit) for loan losses	(17)	(195)	(23)	(115)
Ending balance	1,625	1,505	1,625	1,505
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	248	319	265	335
Provision (credit) for loan losses	16	(21)	(1)	(37)
Ending balance	264	298	264	298
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	211	198	375	218
Provision (credit) for loan losses	(17)	66	(20)	59
Loans charged-off	(3)	(22)	(168)	(37)
Recoveries	4	5	8	7
Ending balance	195	247	195	247
One-to-Four Family [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,086	876	1,092	854
Provision (credit) for loan losses	(83)	88	(95)	85
Recoveries	15	5	21	30
Ending balance	1,018	969	1,018	969
Second Mortgages and HELOC [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	292	365	292	359
Provision (credit) for loan losses	5	(85)	5	(79)
Ending balance	297	280	297	280
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	803	386	765	351
Provision (credit) for loan losses	(48)	57	(10)	92
Ending balance	$ 755	$ 443	$ 755	$ 443

Loans and Allowance for Loan _6

Loans and Allowance for Loan Losses - Summary of Additional Information Pertaining to the Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for impaired loans	$ 126		$ 282
Allowance for non-impaired loans	4,028		4,155
Total allowance for loan losses	4,154	$ 4,282	4,437	$ 3,742	$ 3,844	$ 3,737
Impaired loans	5,969		6,950
Non-impaired loans	448,576		479,824
Total loans	454,545		486,774
Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for non-impaired loans	1,625		1,648
Total allowance for loan losses	1,625	1,642	1,648	1,505	1,700	1,620
Impaired loans	49		52
Non-impaired loans	114,498		113,590
Total loans	114,547		113,642
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for non-impaired loans	264		265
Total allowance for loan losses	264	248	265	298	319	335
Non-impaired loans	11,554		21,285
Total loans	11,554		21,285
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for impaired loans	24		174
Allowance for non-impaired loans	171		201
Total allowance for loan losses	195	211	375	247	198	218
Impaired loans	49		199
Non-impaired loans	17,421		19,208
Total loans	17,470		19,407
One-to-Four Family [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for impaired loans	102		108
Allowance for non-impaired loans	916		984
Total allowance for loan losses	1,018	1,086	1,092	969	876	854
Impaired loans	5,534		6,291
Non-impaired loans	223,545		240,465
Total loans	229,079		246,756
Second Mortgages and HELOC [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for non-impaired loans	297		292
Total allowance for loan losses	297	292	292	280	365	359
Impaired loans	337		408
Non-impaired loans	42,825		43,137
Total loans	43,162		43,545
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for non-impaired loans	755		765
Total allowance for loan losses	755	$ 803	765	$ 443	$ 386	$ 351
Non-impaired loans	38,733		42,139
Total loans	$ 38,733		$ 42,139

Loans and Allowance for Loan _7

Loans and Allowance for Loan Losses - Schedule of Past Due and Non-Accrual Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1,389	$ 2,046
Non-accrual Loans	2,315	3,030
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	95	29
Non-accrual Loans		149
One-to-Four Family [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,085	1,497
Non-accrual Loans	1,978	2,474
Home Equity Loans and Lines of Credit [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	209	520
Non-accrual Loans	337	407
30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,283	1,200
30 - 59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	72	25
30 - 59 Days Past Due [Member] | One-to-Four Family [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,042	655
30 - 59 Days Past Due [Member] | Home Equity Loans and Lines of Credit [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	169	520
60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	106	211
60 - 89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	23	4
60 - 89 Days Past Due [Member] | One-to-Four Family [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	43	207
60 - 89 Days Past Due [Member] | Home Equity Loans and Lines of Credit [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 40
90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		635
90 Days or More Past Due [Member] | One-to-Four Family [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		$ 635

Loans and Allowance for Loan _8

Loans and Allowance for Loan Losses - Summary of Impaired Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Recorded Investment without a valuation allowance	$ 4,103	$ 4,740
Unpaid Principal Balance without a valuation allowance	4,103	4,740
Recorded Investment with a valuation allowance	1,866	2,210
Unpaid Principal Balance with a valuation allowance	1,866	2,210
Related Allowance, Total impaired loans	126	282
Recorded Investment, Total impaired loans	5,969	6,950
Unpaid Principal Balance, Total impaired loans	5,969	6,950
Commercial Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment without a valuation allowance	49	52
Unpaid Principal Balance without a valuation allowance	49	52
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment with a valuation allowance	49
Unpaid Principal Balance with a valuation allowance	49
Related Allowance, Total impaired loans	24
One-to-Four Family [Member] | Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment without a valuation allowance	3,717	4,280
Unpaid Principal Balance without a valuation allowance	3,717	4,280
Recorded Investment with a valuation allowance	1,817	2,011
Unpaid Principal Balance with a valuation allowance	1,817	2,011
Related Allowance, Total impaired loans	102	108
Home Equity Loans and Lines of Credit [Member] | Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment without a valuation allowance	337	408
Unpaid Principal Balance without a valuation allowance	$ 337	408
Recorded Investment with a valuation allowance		199
Unpaid Principal Balance with a valuation allowance		199
Related Allowance, Total impaired loans		$ 174

Loans and Allowance for Loan _9

Loans and Allowance for Loan Losses - Summary of Additional Information Pertaining to Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 6,071	$ 5,535	$ 6,303	$ 5,539
Interest Income Recognized	54	66	139	128
Cash Basis Interest Recognized	23	24	61	65
Residential Real Estate [Member] | One-to-Four Family [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	5,498	4,988	5,630	4,965
Interest Income Recognized	49	62	126	116
Cash Basis Interest Recognized	19	20	51	40
Residential Real Estate [Member] | Home Equity Loans and Lines of Credit [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	337	253	437	262
Interest Income Recognized	4		10	3
Cash Basis Interest Recognized	4	4	10	25
Commercial Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	187	294	187	312
Interest Income Recognized	1	$ 4	2	$ 9
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 49		49
Interest Income Recognized			$ 1

Loans and Allowance for Loan_10

Loans and Allowance for Loan Losses - Summary of Company's Loans by Risk Rating (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 454,545	$ 486,774
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	38,733	42,139
Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	114,547	113,642
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	11,554	21,285
Pass [Member] | Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	38,733	42,139
Pass [Member] | Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	114,342	113,642
Pass [Member] | Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	10,459	$ 21,285
Special Mention [Member] | Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	205
Special Mention [Member] | Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 1,095

Loan Servicing - Additional Inf

Loan Servicing - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Transfers And Servicing [Abstract]
Unpaid principal balances of residential mortgage loans serviced for others	$ 993,000,000		$ 929,300,000
Increase (reduced) the valuation allowance of mortgage servicing rights	$ 113,000	$ (77,000)

Loan Servicing - Summary of Act

Loan Servicing - Summary of Activity Relating to Mortgage Servicing Rights (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Mortgage servicing rights:
Balance at beginning of year	$ 7,794	$ 6,487
Additions through originations	1,100	851
Amortization	(572)	(480)
Balance at end of period	8,322	6,858
Valuation allowance:
Balance at beginning of year	8	90
Provision (credit)	113	(77)
Balance at end of period	121	13
Amortized cost, net	8,201	6,845
Fair value	$ 8,356	$ 7,380

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Current state tax expense	$ 81,000	$ 83,000	$ 8,000
Reversal of federal tax expense benefit	38,000
Net operating loss carryforward	13,600,000	13,600,000
Valuation allowance on deferred tax assets	$ 2,700,000	$ 2,700,000

On-Balance Sheet Derivative I_2

On-Balance Sheet Derivative Instruments and Hedging Activities - Additional Information (Detail) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Derivative Loan Commitments [Member]
Derivative [Line Items]
Derivative, Notional amount	$ 171,598,000	$ 36,852,000
Undesignated Forward Loan Sale Commitments and TBA Securities [Member]
Derivative [Line Items]
Derivative, Notional amount	190,852,000	42,021,000
Fair value of derivative instruments	369,000	253,000
Other Assets [Member] | Derivative Loan Commitments [Member]
Derivative [Line Items]
Derivative fair value, Asset	2,220,000	627,000
Other Assets [Member] | Undesignated Forward Loan Sale Commitments and TBA Securities [Member]
Derivative [Line Items]
Derivative fair value, Asset	158,000	10,000
Other Liabilities [Member] | Undesignated Forward Loan Sale Commitments and TBA Securities [Member]
Derivative [Line Items]
Derivative fair value, Liability	$ 527,000	$ 263,000

Employee Stock Ownership Plan -

Employee Stock Ownership Plan - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Employee Stock Ownership Plan E S O P Disclosures [Line Items]
Loan repaid term			25 years
Number of allocated shares	18,780		18,780
Annual allocation of shares, expiration year			2040
ESOP expense	$ 68,000	$ 77,000	$ 138,000	$ 151,000
Unallocated shares	403,768		403,768
Unallocated shares, value	$ 6,097,000		$ 6,097,000
Common Stock [Member]
Employee Stock Ownership Plan E S O P Disclosures [Line Items]
Sale of stock, price per share	$ 10		$ 10
The Randolph Savings Charitable Foundation, Inc. [Member]
Employee Stock Ownership Plan E S O P Disclosures [Line Items]
Sale of share in employee stock ownership plan			469,498

Share Repurchase Program - Addi

Share Repurchase Program - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Class Of Stock [Line Items]
Cost of shares repurchased		$ 1,600,000	$ 561,000	$ 2,029,000	$ 631,000
September 2017 Share Repurchase Program [Member]
Class Of Stock [Line Items]
Stock repurchase program percentage of outstanding shares repurchased	10.00%
Number of shares authorized to repurchase	586,854
Number of shares repurchased				254,800
Cost of shares repurchased				$ 3,860,000

Earnings (Loss) Per Share - Add

Earnings (Loss) Per Share - Additional Information (Detail) - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Potentially dilutive common stock equivalents outstanding	0	0

Earnings (Loss) Per Share - Sch

Earnings (Loss) Per Share - Schedule of Calculation of Average Number of Shares Outstanding Used to Calculate Basic and Diluted Income (Loss) Per Share (Detail) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Average number of common shares outstanding	5,871,321	6,005,578	5,880,309	6,021,802
Less: Average unallocated ESOP shares	(406,116)	(424,895)	(408,463)	(427,243)
Average number of common shares outstanding (basic and diluted)	5,465,205	5,580,683	5,471,846	5,594,559

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options term			10 years	10 years
Stock-based compensation expense	$ 101,000	$ 71,000	$ 192,000	$ 145,000
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 141,000	$ 109,000	$ 266,000	$ 242,000
Minimum [Member] | Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options and awards vesting period			1 year	3 years
Maximum [Member] | Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options and awards vesting period			5 years	5 years
Two Thousand Seventeen Stock Option and Incentive Plan [Member] | Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved for issuance	586,872		586,872
Stock options term			10 years
Two Thousand Seventeen Stock Option and Incentive Plan [Member] | Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved for issuance	234,749		234,749
Two Thousand Seventeen Stock Option and Incentive Plan [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options and awards vesting period			3 years
Two Thousand Seventeen Stock Option and Incentive Plan [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options and awards vesting period			5 years

Stock Based Compensation - Summ

Stock Based Compensation - Summary of Grants of Options to Purchase Shares of Common Stock (Detail) - $ / shares	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted	57,252	27,000
Option fair value		$ 5.79
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expiration period (years)	10 years	10 years
Expected volatility	29.87%	29.87%
Expected life (years)	6 years 6 months	6 years 6 months
Risk free interest rate, minimum	2.37%	2.68%
Risk free interest rate, maximum	2.61%	2.77%
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option fair value	$ 2.99
Minimum [Member] | Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period (years)	1 year	3 years
Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option fair value	$ 5.83
Maximum [Member] | Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period (years)	5 years	5 years

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Stock Options Activity (Detail) - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Stock Option Grants
Beginning Balance	312,705
Granted	57,252	27,000
Expired	(3,250)
Ending Balance	366,707		312,705
Exercisable at June 30, 2019	64,018
Unrecognized compensation cost (inclusive of directors' options)	$ 1,189,000
Weighted Average Exercise Price
Beginning Balance	$ 14.78
Granted	14.93
Expired	14.66
Ending Balance	14.83		$ 14.78
Exercisable at June 30, 2019	$ 14.76
Weighted Average Remaining Contractual Term and Aggregate Intrinsic Value
Weighted Average Remaining Contractual Term	8 years 6 months 14 days		8 years 8 months 23 days
Weighted Average Remaining Contractual Term, Granted	8 years 4 months 2 days
Aggregate Intrinsic Value, Outstanding	$ 135,971
Aggregate Intrinsic Value, Exercisable	$ 24,942
Stock Options [Member]
Stock Option Grants
Weighted average remaining recognition period (years)	3 years 2 months 23 days

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of Activity in Restricted Stock Awards Under Equity Plan (Detail)	6 Months Ended
	Jun. 30, 2019USD ($)$ / sharesshares
Restricted Stock Awards
Beginning Balance | shares	126,694
Granted | shares	33,335
Forfeited | shares	(2,500)
Ending Balance | shares	157,529
Unrecognized compensation cost | $	$ 1,938,000
Weighted Average Grant Price
Beginning Balance | $ / shares	$ 14.66
Granted | $ / shares	15.07
Forfeited | $ / shares	15
Ending Balance | $ / shares	$ 14.74
Restricted Stock [Member]
Restricted Stock Awards
Weighted average remaining recognition period (years)	3 years 6 months 7 days

Fair Value of Assets and Liab_3

Fair Value of Assets and Liabilities - Schedule of Assets and Liabilities Recorded at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	$ 48,851	$ 50,556
Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	48,319	50,038
Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	532	518
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	48,851	50,556
Fair value, Loans held for sale	102,784	38,474
Derivative assets	2,378	637
Derivative liabilities	527	263
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value, Portfolio loans	4,986	3,680
Fair value, Loans held for sale	102,784	38,474
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	48,319	50,038
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	532	518
Fair Value, Measurements, Recurring [Member] | Derivative Loan Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	2,220	627
Fair Value, Measurements, Recurring [Member] | Forward Loan Sale Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	158	10
Fair Value, Measurements, Recurring [Member] | Forward Loan Sale Commitments, including TBAs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	527	263
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value, Portfolio loans	4,986	3,680
Fair value, Loans held for sale	102,784	38,474
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	48,319	50,038
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	532	518
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Derivative Loan Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	2,220	627
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Forward Loan Sale Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	158	10
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Forward Loan Sale Commitments, including TBAs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	$ 527	$ 263

Fair Value of Assets and Liab_4

Fair Value of Assets and Liabilities - Additional information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value, assets, level 1 to level 2 transfers, amount	$ 0	$ 0
Fair value, assets, level 2 to level 1 transfers, amount	0	0
Fair value, liabilities, level 1 to level 2 transfers, amount	0	0
Fair value, liabilities, level 2 to level 1 transfers, amount	0	0
Increase (decrease) in valuation allowance of mortgage servicing rights	113,000	$ (77,000)
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities measured at fair value on nonrecurring basis	$ 0		$ 0

Fair Value of Assets and Liab_5

Fair Value of Assets and Liabilities - Schedule of Assets Recorded at Fair Value on a Non-Recurring Basis (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights, fair value	$ 8,356		$ 7,380
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (losses) on assets held, mortgage servicing rights	(113)
Gains (Losses) on assets held	(113)
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights, fair value	8,201	$ 7,786
Assets, Fair Value Disclosure	8,201	7,786
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value, Collateral dependent impaired loans	952	1,352
Fair value, Foreclosed real estate	90	65
Assets, Fair Value Disclosure	$ 1,042	$ 1,417

Fair Value of Assets and Liab_6

Fair Value of Assets and Liabilities - Summary of Carrying Values, Estimated Fair Values and Placement in Fair Value Hierarchy of Company's Financial Instruments (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financial assets:
Securities available for sale	$ 48,851	$ 50,556
Level 2 [Member]
Financial assets:
Certificates of deposit	2,202	2,196
Securities available for sale	48,851	50,556
Loans held for sale	102,784	38,474
Derivative assets	2,378	637
Financial liabilities:
Deposits	441,585	435,964
FHLBB advances	121,675	88,894
Derivative liabilities	527	263
Level 3 [Member]
Financial assets:
Loans, net	452,181	473,612
Carrying Amount [Member]
Financial assets:
Certificates of deposit	2,205	2,205
Securities available for sale	48,851	50,556
Loans held for sale	102,784	38,474
Loans, net	451,870	483,846
Derivative assets	2,378	637
Financial liabilities:
Deposits	441,653	437,130
FHLBB advances	121,553	89,036
Derivative liabilities	527	263
Fair Value [Member]
Financial assets:
Certificates of deposit	2,202	2,196
Securities available for sale	48,851	50,556
Loans held for sale	102,784	38,474
Loans, net	452,181	473,612
Derivative assets	2,378	637
Financial liabilities:
Deposits	441,585	435,964
FHLBB advances	121,675	88,894
Derivative liabilities	$ 527	$ 263

Commitments and Contingencies -

Commitments and Contingencies - Summary of Financial Instruments Outstanding Contract Amounts Represent Credit Risk (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Commitments to Originate Loans [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Financial instruments with off-balance-sheet risk	$ 178,241	$ 38,404
Unused Lines and Letters of Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Financial instruments with off-balance-sheet risk	49,577	45,977
Unadvanced Funds on Construction Loans [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Financial instruments with off-balance-sheet risk	13,820	14,175
Overdraft Lines of Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Financial instruments with off-balance-sheet risk	$ 8,266	$ 8,475

Segment Information - Additiona

Segment Information - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)SegmentOffice	Jun. 30, 2018USD ($)
Segment Reporting Information [Line Items]
Number of business segments | Segment			2
Number of branch offices | Office			5
Servicing fees amount	$ (224,000)	$ (291,000)	$ (543,000)	$ (625,000)
Envision Mortgage [Member]
Segment Reporting Information [Line Items]
Premium percentage for new loans			1.50%	1.50%
Premium income	221,000	411,000	$ 377,000	$ 684,000
Percentage of fees for HELOC			1.00%	1.00%
Servicing fees amount	(316,000)	(364,000)	$ (723,000)	$ (766,000)
Envision Bank [Member]
Segment Reporting Information [Line Items]
Percentage of loan servicing fees			0.14%	0.14%
Servicing fees amount	$ 92,000	$ 73,000	$ 180,000	$ 141,000

Segment Information - Summary o

Segment Information - Summary of Segment Information (Detail) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net interest income		$ 4,489,000	$ 4,033,000	$ 8,867,000	$ 8,015,000
Provision (credit) for loan losses		(144,000)	(90,000)	(144,000)	5,000
Net interest income after provision (credit) for loan losses		4,633,000	4,123,000	9,011,000	8,010,000
Non-interest income:
Customer service fees		362,000	439,000	691,000	739,000
Gain on loan origination and sale activities, net	[1]	5,289,000	2,265,000	8,033,000	4,085,000
Mortgage servicing fees, net		224,000	291,000	543,000	625,000
Other		201,000	199,000	378,000	425,000
Total non-interest income		6,076,000	3,194,000	9,645,000	5,874,000
Non-interest expenses:
Salaries and employee benefits		6,092,000	4,979,000	11,504,000	9,415,000
Occupancy and equipment		643,000	729,000	1,299,000	1,427,000
Other non-interest expenses		2,128,000	2,204,000	3,938,000	4,067,000
Total non-interest expenses		8,863,000	7,912,000	16,741,000	14,909,000
Income (loss) before income taxes and elimination of inter-segment profit		1,846,000	(595,000)	1,915,000	(1,025,000)
Elimination of inter-segment profit		(221,000)	(411,000)	(377,000)	(684,000)
Income (loss) before income taxes		1,625,000	(1,006,000)	1,538,000	(1,709,000)
Income tax expense		119,000	4,000	83,000	8,000
Net income (loss)		1,506,000	(1,010,000)	1,455,000	(1,717,000)
Total assets		652,569,000	565,909,000	652,569,000	565,909,000	$ 614,340,000
Envision Bank [Member]
Segment Reporting Information [Line Items]
Net interest income		4,161,000	3,800,000	8,343,000	7,539,000
Provision (credit) for loan losses		(144,000)	(90,000)	(144,000)	5,000
Net interest income after provision (credit) for loan losses		4,305,000	3,890,000	8,487,000	7,534,000
Non-interest income:
Customer service fees		322,000	410,000	617,000	711,000
Mortgage servicing fees, net		(92,000)	(73,000)	(180,000)	(141,000)
Other		97,000	114,000	222,000	248,000
Total non-interest income		327,000	451,000	659,000	818,000
Non-interest expenses:
Salaries and employee benefits		1,786,000	1,612,000	3,325,000	3,248,000
Occupancy and equipment		370,000	373,000	770,000	773,000
Other non-interest expenses		1,298,000	1,227,000	2,252,000	2,238,000
Total non-interest expenses		3,454,000	3,212,000	6,347,000	6,259,000
Income (loss) before income taxes and elimination of inter-segment profit		1,178,000	1,129,000	2,799,000	2,093,000
Total assets		512,162,000	489,214,000	512,162,000	489,214,000
Envision Mortgage [Member]
Segment Reporting Information [Line Items]
Net interest income		328,000	233,000	524,000	476,000
Net interest income after provision (credit) for loan losses		328,000	233,000	524,000	476,000
Non-interest income:
Customer service fees		40,000	29,000	74,000	28,000
Gain on loan origination and sale activities, net	[1]	5,289,000	2,265,000	8,033,000	4,085,000
Mortgage servicing fees, net		316,000	364,000	723,000	766,000
Other		104,000	85,000	156,000	177,000
Total non-interest income		5,749,000	2,743,000	8,986,000	5,056,000
Non-interest expenses:
Salaries and employee benefits		4,306,000	3,367,000	8,179,000	6,167,000
Occupancy and equipment		273,000	356,000	529,000	654,000
Other non-interest expenses		830,000	977,000	1,686,000	1,829,000
Total non-interest expenses		5,409,000	4,700,000	10,394,000	8,650,000
Income (loss) before income taxes and elimination of inter-segment profit		668,000	(1,724,000)	(884,000)	(3,118,000)
Total assets		$ 140,407,000	$ 76,695,000	$ 140,407,000	$ 76,695,000
[1]	Before elimination of inter-segment profit