Pensions and Other Employee Benefits Plans (Components of Net Periodic Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 59	$ 78	$ 141	$ 234
Interest cost	474	461	1,411	1,382
Expected return on plan assets	(464)	(415)	(1,411)	(1,244)
Amortization of net actuarial loss	121	1,509	307	4,527
Net periodic cost	190	1,633	448	4,899
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	(2)	2	2
Interest cost	17	29	52	49
Amortization of net actuarial loss	7	31	22	39
Amortization of prior service credits	2	19	7	7
Curtailment loss		78		78
Net periodic cost	$ 27	$ 155	$ 83	$ 175