Defined Benefit Pension Plan (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Officer	Sep. 30, 2012
Compensation and Retirement Disclosure [Abstract]
Number of founding Officers Eligible for Retirement Benefit Plan			3
Maximum annual benefits payable under the Executive Retirement Plan, frozen subject to cost-of-living adjustments	$ 896,000		$ 896,000
Net periodic benefit cost recorded related to the Company's pension plans
Service costs	22,000	19,000	64,000	57,000
Interest costs	149,000	181,000	448,000	544,000
Amortization of net gain/loss	344,000	248,000	1,035,000	744,000
Amortization of prior service cost	(297,000)	(181,000)	(892,000)	(543,000)
Total recognized in net periodic benefit cost	$ 218,000	$ 267,000	$ 655,000	$ 802,000