Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

Schedule of Dilutive Impact of Equity Method Investee Stock Options

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
(Loss) income from continuing operations — basic	$	(9,718	)	$	14,841		$	(10,608	)	$	58,031
Less: Adjustment for dilutive effect of Telesat stock options		—			(998	)		—			(2,967	)
(Loss) income from continuing operations— diluted	$	(9,718	)	$	13,843		$	(10,608	)	$	55,064

Schedule of Weighted Average Number of Shares

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Common and potential common shares outstanding for diluted earnings per share:
Weighted average common shares outstanding		30,704		30,698		30,653		30,668
Stock options		—		217		—		346
Unvested restricted stock		—		2		—		3
Unvested restricted stock units		—		226		—		224
Common shares outstanding for diluted earnings per share		30,704		31,143		30,653		31,241

Summary of stock options outstanding, unvested restricted stock and unvested restricted stock units excluded from diluted loss per share

	Three Months Ended June  30,		Six Months Ended June  30,
	2012		2012
Stock options outstanding		57		97
Unvested restricted stock		2		2
Unvested restricted stock units		232		223