Basis of Presentation (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash and cash equivalents	$ 37,458	$ 58,853	$ 51,433	$ 5,926
Adjustments for New Accounting Pronouncement [Member]
Cumulative effect of change on equity or net assets	$ 4,700
Maximum [Member]
Cash and cash equivalent maturity term	90 days
Sale of SSL, Nov. 02, 2012 [Member]
Disposal segment, sale date	Nov. 02, 2012
Date purchase agreement entered into	Jun. 26, 2012
Date of first modification of purchase agreement	Oct. 30, 2012
Date of second modification of purchase agreement	Mar. 28, 2013
ViaSat Lawsuit, Sep. 2014 [Member] | Sale of SSL, Nov. 02, 2012 [Member]
Settlement agreement, plaintiff's name	ViaSat, Inc.
Settlement agreement, counterparty's name	SSL