Employee Retirement Plan (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015
Employee Retirement Plan
Cash payment on termination of contract	$ 200
Expense on providing contractual termination benefits recognized	900
Expense on providing contractual termination benefits recognized, net of tax benefit	$ 600
Funded status
Projected benefit obligation, Pre Settlement		$ 2,039
Fair value of plan assets, Pre Settlement		2,039
Projected benefit obligation, Settlement		(2,039)
Fair value of plan assets, Settlement		$ (2,039)