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8. Earnings Per Share (Details) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Basic weighted average shares outstanding	28,201	27,904
Effect of potentially dilutive stock options and restricted stock awards	352	485
Diluted weighted average common shares	28,553	28,389
Anti-dilutive shares	112	54

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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