Stock Based Compensation (Details) - LTIP [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	May 02, 2016
Stock-Based Compensation [Abstract]
Maximum number of shares of common stock that can be issued under the plan (in shares)			100,000
Term of plan	10 years
Maximum number of shares of common stock subject to awards that may be granted to a participant per calendar year (in shares)	2,000
Restricted Stock [Member]
Number of Shares [Roll Forward]
Nonvested at beginning of the period (in shares)	660	0
Granted (in shares)	1,505	1,231
Vested (in shares)	(1,038)	(571)
Forfeited (in shares)	0	0
Nonvested at end of the period (in shares)	1,127	660
Grant Date Weighted Average Fair Value [Abstract]
Nonvested at beginning of the period (in dollars per share)	$ 37.20	$ 0
Granted (in dollars per share)	38.00	37.20
Vested (in dollars per share)	37.75	37.20
Forfeited (in dollars per share)	0	0
Nonvested at end of the period (in dollars per share)	$ 37.76	$ 37.20
Stock-Based Compensation Expense [Abstract]
Stock-based compensation expense	$ 46	$ 22
Recognized tax benefits related to stock-based compensation expense	18	9
Fair value of vested shares	39	$ 21
Stock-based compensation expense not yet recognized	$ 35
Period of recognition	3 years
Restricted Stock [Member] | Officers and Key Employees [Member]
Stock-Based Compensation [Abstract]
Vesting period	3 years