Pensions and Other Employee Benefits Plans (Narrative) (Details) (USD $)	1 Months Ended	12 Months Ended
	Apr. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Decrease to the assets of the Loral Pension Plan	$ 1,200,000
Unfunded status at end of period		(21,300,000)
Unfunded benefit obligations, discount rate		4.00%	4.75%	4.00%
Unfunded benefit obligations, decrease in discount rate		0.50%
Change in unfunded benefit obligation as a result of decrease in half percentage point assumed discount rate		4,000,000	3,100,000
Accumulated pension benefit obligation		46,900,000	39,200,000
Expected long-term rate of return on plan assets		7.25%
Health care cost trend rate			8.50%
Health care cost trend rate, year			2021
Ultimate health care cost trend rate			5.00%
Employee Savings (401K) Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to employee savings (401K) plan, maximum		6.00%
Participant's base salary rate		66.70%
Employer contributions		100,000	200,000	200,000
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to qualified pension plan		4,100,000
Estimated actuarial loss to be amortized from accumulated other comprehensive income over next fiscal year		800,000
Estimated employer contribution next fiscal year		4,200,000
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to qualified pension plan		100,000
Estimated employer contribution next fiscal year		500,000
Supplemental Executive Retirement Plan ("SERP") [Member]
Defined Benefit Plan Disclosure [Line Items]
Termination date SERP			Dec. 13, 2012
Lump sum payment to plan participants			17,700,000
Discontinued Operations [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to qualified pension plan			10,700,000
Pension plan assets transferred to disposal group	11,900,000
Amount reimbursed by purchaser of disposal group for pension true-up	11,900,000
Cash proceeds from the decrease in the plan assets	$ 1,200,000