Loans (Detail Textuals) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) Loans	Dec. 31, 2018 USD ($) Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans serviced for others	$ 121,000	$ 123,800
Loans	281,933	283,339
Total Past Due	1,777	1,071
30-59 Days Past Due And Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,020	622
90 Days and Over And Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	146	100
90 Days and Over
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	348	100
Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,887	1,425
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value of loans pledged as collateral	$ 200,100	$ 201,900
Number of nonaccrual loans | Loans	1
Financing receivable, recorded Investment, nonaccrual status	$ 55
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of nonaccrual loans | Loans	1	1
Financing receivable, recorded Investment, nonaccrual status	$ 45	$ 45
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	274,864	275,999
Total Past Due	1,732	1,026
Real estate loans | 30-59 Days Past Due And Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,020	622
Real estate loans | 90 Days and Over And Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	146	0
Real estate loans | 90 Days and Over
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	303	55
Real estate loans | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,887	1,425
Real estate loans | Secured by one-to-four family residences
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	221,698	221,602
Total Past Due	$ 1,256	631
Real estate loans | Secured by one-to-four family residences | 30-59 Days Past Due And Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of loan Increased	313.20%
Total Past Due	$ 938	227
Amount of past due loans increased	711
Real estate loans | Secured by one-to-four family residences | 90 Days and Over And Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Real estate loans | Secured by one-to-four family residences | 90 Days and Over
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	55	55
Real estate loans | Secured by one-to-four family residences | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	$ 494
Amount of loan decreased	$ 494
Real estate loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of nonaccrual loans | Loans	1	1
Financing receivable, recorded Investment, nonaccrual status	$ 248	$ 55
Loans	22,019	22,492
Total Past Due	248	248
Real estate loans | Commercial | 30-59 Days Past Due And Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	248
Real estate loans | Commercial | 90 Days and Over And Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Real estate loans | Commercial | 90 Days and Over
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	248	0
Amount of past due loans increased	248
Real estate loans | Commercial | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,887	931
Amount of loan increased	$ 956
Percentage of loan Increased	102.70%
Real estate loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 16,673	16,766
Total Past Due	228	147
Real estate loans | Home equity lines of credit | 30-59 Days Past Due And Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	82	147
Real estate loans | Home equity lines of credit | 90 Days and Over And Accruing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	146	0
Amount of past due loans increased	146
Real estate loans | Home equity lines of credit | 90 Days and Over
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Real estate loans | Home equity lines of credit | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of mortgage servicing rights	$ 784	$ 812