Quarterly report pursuant to Section 13 or 15(d)

每股收益 (Schedule Of 每股收益 Reconciliation) (Details)

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每股收益 (Schedule Of 每股收益 Reconciliation) (Details) (USD $)
3个月结束
3月. 31, 2012
3月. 31, 2011
每股收益[摘要]    
基本、净收入 $ 26,869,000 $ 21,174,000
摊薄后净收入 $ 26,869,000 $ 21,174,000
基本的, 55,626,208 44,724,976
Effect of dilutive securities, Stock options and restricted stock awards, Shares 621,401 400,043
稀释,股票 56,247,609 45,125,019
基本,每股净收入 $ 0.48 $ 0.47
摊薄后净收入 Per Share $ 0.48 $ 0.47