Other Current Assets (Schedule of Other Current Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Other Current Assets [Abstract]
Indemnification receivable from SSL for pre-closing taxes (see note 13)	$ 672	$ 2,410
Due from affiliates	176	161
Prepaid expenses	557	151
Other	508	510
Total other current assets	$ 1,913	$ 3,232