Share-Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2011
Summary of the activity related to stock options granted under the Company's Incentive Plan
Total Shares outstanding, beginning balance	4,026
Total Shares, granted	1,250
Total Shares, exercised	(50)
Total Shares, forfeited, canceled or expired	(75)
Total Shares outstanding, ending balance	5,151
Total Shares, exercisable	1,644
Total Shares, available for issuance	1,995
Weighted Average Exercise Price per Share Outstanding, beginning balance	$ 14.24
Weighted Average Exercise Price per Share, granted	$ 15.34
Weighted Average Exercise Price per Share, exercised	$ 12.00
Weighted Average Exercise Price per Share, forfeited, canceled or expired	$ 17.31
Weighted Average Exercise Price per Share Outstanding, ending balance	$ 14.48
Weighted Average Exercise Price per Share, exercisable	$ 13.06
Weighted Average Remaining Contractual Term (Years), Outstanding	8.17
Weighted Average Remaining Contractual Term (Years), Exercisable	7.53
Aggregate Intrinsic Value, Outstanding	$ 0	[1]
Aggregate Intrinsic Value, Exercisable	$ 1,841	[1]

[1] Aggregate intrinsic value represents the value of our closing stock price on June 30, 2011 ($14.18) in excess of the exercise price multiplied by the number of options outstanding or exercisable.