Organization And Principal Business (Narrative) (Details) (USD $)	0 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended
	Nov. 07, 2012	Mar. 28, 2012	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Telesat Holdco [Member]	Nov. 02, 2012 Sale Of SS/L [Member]	Mar. 31, 2013 Sale Of SS/L [Member]
Organization And Principal Business [Line Items]
Cash proceeds from sale of SS/L						$ 967,900,000
Amortization period of Land Note						3 years
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
Promissory note for sale of real estate of disposal group			103,522,000	102,250,000		101,000,000
Transaction costs related to sale of SS/L						35,200,000
Original due date of first installment of promissory note							Mar. 31, 2013
Revised due date of first installment of promissory note							Mar. 31, 2014
Principal amount of first installment of promissory note							33,700,000
Original interest rate of first installment of promissory note							1.00%
Revised interest rate of first installment of promissory note							1.50%
Land promissory note interest rate						1.00%
Disposal segment, sale date						Nov. 02, 2012
Payment towards contingency pursuant to purchase agreement						6,500,000
Promissory note amortization period and frequency						three equal annual installments
Promissory note amortization period commencement date						Mar. 31, 2013
Special distribution record date	Nov. 19, 2012
Special distribution declared per share	$ 29.00			$ 29.00
Aggregate special distribution	892,100,000
Additional payout to restricted stock holders who elected cash dividend distribution	$ 5,300,000	$ 2,500,000
Special distribution Paid date	Dec. 04, 2012
Voting interest					33.33%
Equity Method Investment Ownership Percentage					62.80%
Date of Incorporation			Jun. 24, 2005
Date of emergence from bankruptcy proceedings			Nov. 21, 2005