Other Current Assets (Schedule of Other Current Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Other Current Assets [Abstract]
Indemnification receivable from SS/L for pre-closing taxes (see Note 13)	$ 2,410	$ 2,410
Restricted cash, current	304
Due from affiliates	205	217
Prepaid expenses	443	198
Other	418	274
Total other current assets	$ 3,780	$ 3,099