Employee Benefit Plans - Schedule of Assumptions Used (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Defined benefit plan, Weighted average assumptions used in calculating net periodic benefit cost [Abstract]
Expected long-term return on plan assets	5.50%
Pension Plan, Defined Benefit
Defined benefit plan, Weighted average assumptions used in calculating net periodic benefit cost [Abstract]
Discount rate	2.80%	2.80%
Expected long-term return on plan assets	5.40%	5.40%
Defined benefit plan, Weighted average assumptions used in calculating benefit obligation [Abstract]
Discount rate	2.60%	2.80%