Pension Plan (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Pension Plan [Abstract]
Highest consecutive years of employee compensation used to compute benefit	3 years
Years of employment used in benefit computation	10 years
Unfunded pension plan obligations	$ 14,400,000		$ 14,500,000
Net Pension Cost [Abstract]
Service cost	15,000	19,000
Interest cost	155,000	133,000
Amortization of prior service cost	22,000	22,000
Amortization of actuarial loss	32,000	122,000
Net periodic benefit cost	$ 224,000	$ 296,000