Defined Benefit Plan - Annual (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	$ 0	$ 4,389	$ 4,389	$ 0	$ 4,389
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation	0	3,592
Service cost		0	0
Interest cost		84	207
Actuarial loss (gain)		2
Benefits paid		(3,791)
Curtailments		0
Lump sum settlement		117
Effect of change in currency conversion		0
Benefit Obligation		0	3,592
Defined Benefit Plan, Change in Plan Assets [Roll Forward]
Fair Value of Plan Assets	0	4,389
Actual return on plan assets		306
Employer contributions		0
Benefits paid		(3,791)
Transfer to qualified replacement plan		(874)
Expenses paid from the plan		(30)
Fair Value of Plan Assets		0	4,389
Funded balance at end of year				0
Pension and Other Postretirement Defined Benefit Plans, Liabilities [Abstract]
Pension and Other Postretirement Defined Benefit Plans, Liabilities				0
Accumulated Benefit Obligation				0
Components of net periodic benefit cost included in employee compensation and benefits
Service cost		0	0
Interest cost		84	207
Expected return on plan assets		(299)	(251)
Amortization of (loss) / gain		(205)	0
Amortization of prior service cost		0	21
Effect of settlement		0	(95)
Net periodic benefit cost		(420)	(118)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net Gain (Loss)		344	137
Effect of Curtailment		0	(360)
Effect of Settlement		0	0
Amortization of Loss (Gain)		0	0
Amortization of prior service cost included in net periodic pension cost	$ 0	0	(23)
Total recognized in other comprehensive income (loss)		344	(246)
Defined Benefit Plan, Amounts Recognized in Net Periodic Benefit Cost and Other Comprehensive Loss (Income)		(76)	(364)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Net Gains (Losses)				0	344
Prior Service Cost				0	0
Effect of change in currency conversion				0	0
Total recognized in accumulated other comprehensive income (loss)				$ 0	$ 344
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract]
Prior Service Cost		0	0
Net Gains (Losses)		$ 0	$ 0
Cash Balance Plan
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets		6.00%	6.00%