Earnings Per Common Share (Details 1) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Weighted-average shares outstanding - Basic:
Common stock	32,133	32,392
Participating restricted common stock		66
Total	32,133	32,458
Weighted-average shares outstanding - Diluted:
Common stock	32,527	32,561
Participating restricted common stock		66
Total	32,527	32,627

This element represents nonvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid). Basic and dilutive earnings per share are generally disclosed for such shares using the two-class method.

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-Glossary Participating Security

-URI http://asc.fasb.org/extlink&oid=6519812

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+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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-URI http://asc.fasb.org/extlink&oid=6528421

+ Details