Employee Benefit Plans - Future Benefit Payments and Net Periodic Benefit Cost Assumptions and Components (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net periodic benefit cost for the year:
Service cost	$ 15	$ 21	$ 29	$ 42
Interest cost	33	31	66	62
Net periodic benefit cost	$ 48	$ 52	$ 95	$ 104
Pension Plan | Minimum
Net periodic benefit cost for the year:
Defined Benefit Plan Requisite Service Period			1 year