Additional Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Additional Cash Flow Information [Abstract]
Equity in net income of affiliates	$ (6,869)	$ (46,246)
Deferred taxes	5,985	16,952
Depreciation and amortization	7,927	7,705
Stock based compensation	281	281
Warranty expense (reversals) accruals	(528)	148
Amortization of prior service credits	2,013	332
Unrealized gain on non-qualified pension plan assets	(84)	(177)
Non-cash net interest income	(1,975)	(2,752)
Gain on foreign currency transactions and contracts	(1,715)	(42)
Amortization of fair value adjustments related to orbital incentives	(586)	(256)
Net non-cash operating items	4,449	(24,055)
Capital expenditures incurred not yet paid	3,663	2,213
Dividend declared not yet paid	417,606
Interest paid	443	211
Tax payments (refunds), net	$ (157)	$ 3,166