Retirement Plans (Details) (Pension Plans, Defined Benefit [Member], USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 7,000	$ 18,000	$ 23,000	$ 53,000
Interest cost	64,000	72,000	194,000	216,000
Expected return on assets	(91,000)	(77,000)	(273,000)	(230,000)
Amortization of actuarial net loss	28,000	25,000	84,000	75,000
Net periodic pension cost	8,000	38,000	28,000	114,000
Company contributions	81,000	339,000	284,000	538,000
Anticipated company contributions	$ 400,000		$ 400,000