Note 7 - Shareholders' Equity	12 Months Ended
Dec. 31, 2011
Shareholders' Equity and Share-based Payments [Text Block]	(7) SHAREHOLDERS' EQUITY: In February 2008, our Board of Directors approved a new share repurchase plan under which up to $100.0 million of common shares could be purchased, and terminated the prior plan. During 2010, we purchased approximately 167,000 shares for a total of approximately $6.6 million. During 2010, approximately 92,000 shares with a value of approximately $3.9 million were surrendered by our employees in connection with the vesting of restricted shares and restricted share units and used by us to satisfy payment of employee federal income tax withholding obligations. During 2011, we purchased approximately 264,000 shares for a total of approximately $12.5 million. During 2011, approximately 92,000 shares, with a value of approximately $4.3 million, were surrendered by our employees in connection with the vesting of restricted shares and restricted share units and used by us to satisfy payment of employee federal income tax withholding obligations. The share purchases in connection with the restricted share and restricted share unit vestings were made outside of our repurchase plan.

Note 7 - Shareholders' Equity

12 Months Ended

Dec. 31, 2011

Shareholders' Equity and Share-based Payments [Text Block]

(7) SHAREHOLDERS' EQUITY:

In February 2008, our Board of Directors approved a new share repurchase plan under which up to $100.0 million of common shares could be purchased, and terminated the prior plan. During 2010, we purchased approximately 167,000 shares for a total of approximately $6.6 million. During 2010, approximately 92,000 shares with a value of approximately $3.9 million were surrendered by our employees in connection with the vesting of restricted shares and restricted share units and used by us to satisfy payment of employee federal income tax withholding obligations. During 2011, we purchased approximately 264,000 shares for a total of approximately $12.5 million. During 2011, approximately 92,000 shares, with a value of approximately $4.3 million, were surrendered by our employees in connection with the vesting of restricted shares and restricted share units and used by us to satisfy payment of employee federal income tax withholding obligations. The share purchases in connection with the restricted share and restricted share unit vestings were made outside of our repurchase plan.