Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 31, 2013 Voting Common Stock [Member]	Oct. 31, 2013 Non-voting Common Stock [Member]
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Trading Symbol	lorl
Entity Registrant Name	LORAL SPACE & COMMUNICATIONS INC.
Entity Central Index Key	0001006269
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		21,414,212	9,505,673