Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2011

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of operations for the years endedDecember 2011, 2010, and 2009 (in thousands):

	December 31, 2011	December 31, 2010	December 31, 2009
Weighted-average common shares—basic	172,765	170,753	158,419
Plus incremental weighted-average shares from time-vested conversions:
Restricted stock awards	216	214	162
Weighted-average common shares—diluted	172,981	170,967	158,581