Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Nov. 04, 2019
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
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	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Voting Common Stock
Security Exchange Name	NASDAQ
Voting Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		21,427,078
Non-Voting Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		9,505,673