Pension Plans (Details 3) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Components of net periodic pension cost
Interest cost	$ 213,000	$ 213,000	$ 639,000	$ 639,000
Expected return on plan assets	(246,000)	(227,000)	(740,000)	(681,000)
Recognized net actuarial loss	25,000	14,000	75,000	42,000
Total net periodic pension cost	(8,000)		(26,000)
Contributions to pension plans		$ 125,000		$ 425,000