Pensions and Other Employee Benefits Plans (Amounts Recognized in the Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Long-Term Liabilities	$ 19,696	$ 15,614
Amounts recognized in the balance sheet	19,696	15,614
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Current Liabilities	526	128
Long-Term Liabilities	1,097	1,389
Amounts recognized in the balance sheet	$ 1,623	$ 1,517