Pension Plan (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Pension Plan [Abstract]
Highest consecutive years of employee compensation used to compute benefit			3 years
Years of employment used in benefit computation			10 years
Net Pension Cost [Abstract]
Service cost	$ 17	$ 15	$ 49	$ 45
Interest cost	135	155	403	466
Amortization of prior service cost	22	22	68	66
Amortization of acturial loss	46	32	140	96
Net periodic benefit cost	220	$ 224	660	$ 673
Unfunded pension plan obligations	$ 15,400		$ 15,400		$ 15,300