Pension Plan (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Components of net periodic pension cost [Abstract]
Interest cost	$ 65	$ 69	$ 131	$ 137
Expected return on plan assets	(90)	(91)	(179)	(182)
Amortization of net loss	98	55	197	110
Net Periodic Pension Plan Cost	$ 73	$ 33	$ 149	$ 65