Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 06, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Entity Registrant Name	Loral Space & Communications Inc.
Entity Central Index Key	0001006269
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Shell Company	false
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