Commitments and Contingencies (Narrative) (Details) (USD $)					3 Months Ended					3 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Pre Closing Taxes Indemnification [Member] Sale of SS/L [Member]	Dec. 31, 2013 Pre Closing Taxes Indemnification [Member] Sale of SS/L [Member]	Sep. 30, 2014 ViaSat Lawsuit [Member]	Dec. 31, 2013 ViaSat Lawsuit [Member]	Sep. 30, 2014 MDA Dispute Resolution [Member]	Sep. 30, 2014 MDA Dispute Resolution [Member] First ViaSat Lawsuit [Member]	Sep. 30, 2014 MDA Dispute Resolution [Member] Second ViaSat Lawsuit [Member]	Sep. 30, 2013 Globalstar do Brasil S.A. [Member]	Sep. 30, 2014 Globalstar do Brasil S.A. [Member]	Dec. 31, 2013 Globalstar do Brasil S.A. [Member]	Mar. 31, 2013 Globalstar do Brasil S.A. [Member]
Contingencies And Commitments [Line Items]
Loss contingency accrual, Period adjustments					$ 15,400,000
Lawsuit Settlement Initial Payment					20,000,000
Lawsuit settlement initial payment, joint & several Liability					40,000,000
Other current assets	5,636,000	568,000					4,600,000
Loss Contingency Accrual			(400,000)	100,000	400,000	10,800,000				3,700,000	1,200,000	1,300,000
Indemnification liabilities													4,800,000
Loss contingency cash payment										3,700,000
Settlement agreement date					September 5, 2014
Settlement agreement, court					United States District Court for the Southern District of California
Settlement agreement, plaintiff's name					ViaSat, Inc.
Settlement agreement, counterparty's name					SS/L
Lawsuit filing date					February 2012
Date of dismissal					Sep. 10, 2014
Settlement agreement terms					The terms of the Settlement Agreement provide, among other things, for (1) mutual releases of claims asserted in the lawsuits; (2) payment by Loral and SS/L to ViaSat on a joint and several basis of $100 million, $40 million of which was paid in connection with entry into of the Settlement Agreement, and $60 million of which will be paid quarterly from October 15, 2014 through January 15, 2017 with interest accruing from the effective date of the Settlement Agreement at rate of 11.4% per year; (3) agreement by ViaSat not to sue any of Loral, SS/L or their customers and suppliers on the Covered ViaSat Patents (as defined in the Settlement Agreement) or for breach of the contracts asserted in the lawsuits to the extent such breach relates to claims asserted in the lawsuits; and (4) agreement by Loral and SS/L not to sue ViaSat or its customers and suppliers on the Covered SSL Patents (as defined in the Settlement Agreement) or for breach of the contracts asserted in the lawsuits to the extent such breach relates to claims asserted in the lawsuits. MDA, the parent company of SS/L, agreed to guarantee SS/L's payment obligations under the Settlement Agreement.
Lawsuit Settlement Amount, Joint & Several Liability					100,000,000
Lawsuit Settlement Future Payments, Joint & Several Liability					60,000,000
Lawsuit Settlement Installment Frequency, Joint & Several Liability					quarterly
Lawsuit settlement installment start date, joint & several liability					Oct. 15, 2014
Lawsuit Settlement Installment End Date, Joint & Several Liability					Jan. 15, 2017
Lawsuit settlement interest rate					11.40%
Lawsuit Settlement Allocation, Net of ViaSat Covenant Not To Sue								50.00%	50.00%
Loss Contingency, Range of Possible Loss, Minimum							15,000,000
Loss contingency, range of possible loss, maximum							$ 85,000,000