Employee Retirement Plan (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
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			$ 2,137
Fair value of plan assets			1,862
Underfunded status			(275)
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)
Liability recognized on the consolidated balance sheets
Accrued benefit cost			$ 275
Components of the net periodic benefit cost
Net periodic benefit cost		91
Settlement charge		814
Total net periodic benefit cost		$ 905