Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Jan. 01, 2019	Dec. 31, 2018
Contingencies And Commitments [Line Items]
Operating lease liability					$ 300
Right-of-use asset	$ 661		$ 661		$ 300
Sublease income	$ 0	$ 0	0	$ 0
Operating lease payments			$ 300
Operating lease, term of contract	12 months		12 months
Operating lease, discount rate	7.50%		7.50%
Sale of SSL, Nov. 02, 2012 [Member] | Pre Closing Taxes Indemnification [Member]
Contingencies And Commitments [Line Items]
Indemnification refund receivable	$ 700		$ 700			$ 2,400
Indemnification refund received	1,700
Globalstar do Brasil S.A. [Member]
Contingencies And Commitments [Line Items]
Loss contingency accrual	$ 200		$ 200			$ 200