Employee Benefit Plans - Schedule of Supplemental Executive Retirement Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Amounts Recognized on the Balance Sheets [Abstract]
Other assets, deferred income tax benefit	$ 509	$ 542
Supplemental Executive Retirement Plan [Member]
Changes in Benefit Obligations [Roll Forward]
Benefit obligation, beginning	2,485	2,531	$ 2,372
Service cost	171	164	213
Interest cost	84	92	97
Actuarial gain	(18)	(141)	(77)
Benefits paid	(148)	(161)	(74)
Benefit obligation, ending	2,574	2,485	2,531
Funded status, ending	(2,574)	(2,485)	(2,531)
Changes in Plan Assets [Roll Forward]
Employer contributions	148	161	74
Benefits paid	(148)	(161)	(74)
Amounts Recognized on the Balance Sheets [Abstract]
Other assets, deferred income tax benefit	513	542	861
Other liabilities	2,574	2,485	2,531
Accumulated other comprehensive income (loss)	140	125	11
Amounts Recognized in Accumulated Other Comprehensive Income (Loss) [Abstract]
Net gain (loss)	155	137	(4)
Prior service cost	22	21	20
Deferred tax expense	(37)	(33)	(5)
Amount recognized	140	125	11
Components of Net Periodic Benefit Cost [Abstract]
Service cost	171	164	213
Interest cost	84	92	97
Amortization of prior service cost	1	1	1
Net periodic benefit cost	256	257	311
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss) [Abstract]
Net gain	18	140	77
Amortization of prior service cost	1	1	1
Total recognized	19	141	78
Less: Income tax effect	4	27	26
Net amount recognized in other comprehensive income (loss)	15	114	52
Total recognized in net periodic benefit costs and other comprehensive (income) loss before income tax	$ 237	$ 116	$ 233
Weighted-Average Assumptions for Net Periodic Benefit Cost [Abstract]
Discount rate used for net periodic benefit cost	3.50%	3.75%	4.00%
Rate of compensation increase for net periodic benefit cost and benefit obligation	3.25%	3.25%	3.25%
Weighted-Average Assumptions [Abstract]
Discount rate used for benefit obligation	4.00%	3.50%	3.75%