Pensions and Other Employee Benefits Plans (Components of Net Periodic Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 41	$ 147
Interest cost	469	463
Expected return on plan assets	(474)	(427)
Amortization of net actuarial loss	93	1,503
Net periodic cost	129	1,686
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	2
Interest cost	17	10
Amortization of net actuarial loss	8	4
Amortization of prior service credits	2	(6)
Net periodic cost	$ 28	$ 10