Pensions and Other Employee Benefits Plans (Components of Net Periodic Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 41	$ 9	$ 82	$ 156
Interest cost	468	458	937	921
Expected return on plan assets	(473)	(402)	(947)	(829)
Amortization of net actuarial loss	93	1,515	186	3,018
Net periodic cost	129	1,580	258	3,266
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost		2	1	4
Interest cost	18	10	35	20
Amortization of net actuarial loss	7	4	15	8
Amortization of prior service credits	3	(6)	5	(12)
Net periodic cost	$ 28	$ 10	$ 56	$ 20