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Share-Based Payments
 9 Months Ended
Sep. 30, 2012
Share-Based Payments [Abstract]  
Share-Based Payments
11.   Share-Based Payments

During the nine months ended September 30, 2012, we granted 105,000 stock options under our 2009 Long-Term Incentive Plan and cancelled 16,060 stock options previously issued under our 1999 and 2009 Long-Term Incentive Plans. Total share-based compensation expense was $0.2 million and $0.4 million for the three months ended September 30, 2012 and 2011, respectively, and $0.8 million and $1.1 million for the nine months ended September 30, 2012 and 2011, respectively, and are shown in corporate, general and administration expenses on our condensed consolidated statements of operations.

On March 5, 2012, for options previously granted under our 1999 Long-Term Incentive Plan that were scheduled to expire within the next two years, we extended the original expiration dates by two years. As a result, grants to seven employees were modified and these modifications resulted in total incremental share-based compensation cost of approximately $0.1 million that was immediately recognizable.