Pension Plan (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 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		$ 14,400,000		$ 14,500,000
Net Pension Cost [Abstract]
Service cost	15,000	19,000	30,000	37,000
Interest cost	156,000	133,000	311,000	266,000
Amortization of prior service cost	22,000	22,000	44,000	45,000
Amortization of actuarial loss	32,000	123,000	64,000	245,000
Net periodic benefit cost	$ 225,000	$ 297,000	$ 449,000	$ 593,000