Defined Benefit Pension Plan (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2016 USD ($)	Jun. 30, 2016 USD ($) plan_participant	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) plan_participant	Jun. 30, 2015 USD ($)	May 05, 2015 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Current period charge			$ 5,300
Total benefit obligation						$ 19,600
Number of plan participants who have not reached age 65 | plan_participant		2		2
Net periodic benefit cost recorded related to the Company's pension plans
Service cost			8		$ 29
Interest cost			56		225
Amortization of net loss			(50)		(198)
Amortization of prior service cost			86		343
Total recognized in net periodic benefit cost		$ 0	100	$ 0	$ 399
Chief Executive Officer [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Lump sum benefit obligation at termination of plan	$ 14,400
Accumulated Other Comprehensive Income (Loss) [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Current period charge			$ 2,500