Employee Benefit Plans - Schedule of Benefit Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	$ 16,240	$ 15,106
Change in benefit obligation:
Benefit obligation, Beginning balance	40,296	43,799
Service Cost	0	0
Interest Cost	1,855	1,864
Change in Mortality	0	0
Plan amendments	0	0
Curtailment/settlement	0	0
Actuarial (gains) losses	2,502	(2,774)
Benefits paid	(3,931)	(2,593)
Benefit obligation, Ending balance	40,722	40,296
Change in plan assets:
Fair value of plan assets, Beginning balance	25,190	28,360
Actual return on plan assets	198	(1,232)
Employer contributions	3,025	655
Benefits paid	(3,931)	(2,593)
Fair value of plan assets, Ending balance	$ 24,482	$ 25,190