Income Taxes - Schedule of Expense (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017
Current tax expense
Federal													$ 198	$ 127
State													27	77
Total current tax expense													225	204
Deferred tax (benefit) expense
Federal													(149)	100
State													93	139
Total deferred tax (benefit) expense				$ (276)				$ 469	$ (208)	$ 602	$ (87)	$ 746	(56)	239
Total tax expense	$ 243	$ 118	$ 80	$ (272)	$ (320)	$ 149	$ 135	$ 479					$ 169	$ 443