Employee Benefits (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Employee Benefits [Abstract]
Percentage of employee's compensation matched by company	5.00%
Defined benefit plan, employer contribution	$ 198	$ 178	$ 138
Unearned stock-based compensation expense [Abstract]
Risk-free interest rate	2.69%
Dividend yield	2.20%
Stock price volatility	13.70%
Expected term	4 years
2018 Equity Incentive Plan [Member]
Share-based Compensation [Abstract]
Compensation expense related to the plan	$ 154
Stock Option [Member]
Share-based Compensation [Abstract]
Unrecognized compensation expense	$ 287
Period for recognition of compensation cost not yet recognized	4 years
Stock Option [Member] | IPO [Member]
Share-based Compensation [Abstract]
Vesting period	4 years
Stock Option [Member] | 2018 Equity Incentive Plan [Member]
Stock Option Activity [Roll Forward]
Options Granted (in shares)	150,000
Options Exercised (in shares)	0
Outstanding at end of period (in shares)	150,000
Exercisable at end of period (in shares)	0
Weighted Average Exercise Price [Roll Forward]
Options Granted (in dollars per share)	$ 19.00
Options Exercised (in dollars per share)	0
Outstanding at end of period (in dollars per share)	$ 19.00
Options, Additional Disclosures [Abstract]
Weighted average remaining contractual term, Outstanding	9 years 8 months 23 days
Weighted average remaining contractual term, Exercisable	0 years
Aggregate intrinsic value, Outstanding	$ 0
Aggregate intrinsic value, Exercisable	0
RSUs [Member]
Share-based Compensation [Abstract]
Unrecognized compensation expense	$ 2,340
Period for recognition of compensation cost not yet recognized	5 years
Restricted Stock Units [Roll Forward]
Shares granted (in shares)	130,000
Shares settled (in shares)	0
Shares forfeited (in shares)	0
End of the period balance (in shares)	130,000
Weighted Average Grant Date Fair Value [Abstract]
Shares granted (in dollars per share)	$ 19.09
Shares settled (in dollars per share)	0
Shares forfeited (in dollars per share)	0
End of the period balance (in dollars per share)	$ 19.09
RSUs [Member] | IPO [Member]
Share-based Compensation [Abstract]
Vesting period	5 years