Loans - Composition of Loan Portfolio By Type of Loan (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Real estate loans:
Total loans, gross	$ 668,877	$ 642,371
Deferred loan cost, net of fees	(503)	(443)
Less allowance for loan losses	(4,553)	(4,826)
Total loans	663,821	637,102
Multi-Family [Member]
Real estate loans:
Total loans, gross	30,778	37,445
Consumer Loans [Member]
Real estate loans:
Total loans, gross	7,945	8,620
Less allowance for loan losses	(133)	(184)
Commercial Loans [Member]
Real estate loans:
Total loans, gross	96,448	88,938
Less allowance for loan losses	(718)	(847)
Junior Liens [Member]
Real estate loans:
Total loans, gross	1,131	1,184
Real Estate Loans [Member]
Real estate loans:
Total loans, gross	564,484	544,813
Real Estate Loans [Member] \| Multi-Family [Member]
Real estate loans:
Total loans, gross	30,778	37,445
Real Estate Loans [Member] \| One-to-Four Family Mortgages [Member]
Real estate loans:
Total loans, gross	175,021	163,565
Real Estate Loans [Member] \| Home Equity Line of Credit [Member]
Real estate loans:
Total loans, gross	34,352	35,697
Real Estate Loans [Member] \| Construction [Member]
Real estate loans:
Total loans, gross	34,036	30,246
Real Estate Loans [Member] \| Land [Member]
Real estate loans:
Total loans, gross	11,534	14,873
Real Estate Loans [Member] \| Non-Residential Real Estate [Member]
Real estate loans:
Total loans, gross	244,283	224,952
Real Estate Loans [Member] \| Farmland [Member]
Real estate loans:
Total loans, gross	33,349	36,851
Real Estate Loans [Member] \| Junior Liens [Member]
Real estate loans:
Total loans, gross	1,131	1,184
Total Other Loans [Member]
Real estate loans:
Total loans, gross	104,393	97,558
Total Other Loans [Member] \| Consumer Loans [Member]
Real estate loans:
Total loans, gross	7,945	8,620
Total Other Loans [Member] \| Commercial Loans [Member]
Real estate loans:
Total loans, gross	$ 96,448	$ 88,938

Real estate loans.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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