Income Per Share (Tables)

9 Months Ended

Sep. 30, 2011

Income Per Share (Tables) [Abstract]

Weighted average number of common shares outstanding

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Weighted average shares outstanding		48,399		47,173		48,331		47,095
Effect of dilutive stock-based compensation		—		—		706		—
Effect of convertible notes		—		—		1,576		—
Weighted average shares outstanding - assuming dilution		48,399		47,173		50,613		47,095