Common Stock Options, Restricted Stock, Warrants And Changes In Capitalization (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
0月结束 | 12个月结束 | 0月结束 | 12个月结束 | 1月结束 | 12个月结束 | |||||||||||||
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12月. 05, 2011
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7月. 15, 2011
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3月. 30, 2011
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2010年5月25日
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12月. 31, 2011
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12月. 31, 2010
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12月. 05, 2011
普通股〔成员〕
|
7月. 15, 2011
普通股〔成员〕
|
3月. 30, 2011
普通股〔成员〕
|
2010年5月25日
普通股〔成员〕
|
2010年5月19日
普通股〔成员〕
|
12月. 31, 2011
普通股〔成员〕
2005 Stock Incentive Plan [Member]
|
12月. 31, 2011
普通股〔成员〕
1999 Stock Option Plan [Member]
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12月. 31, 2004
普通股〔成员〕
1999 Stock Option Plan [Member]
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4月. 19, 2006
普通股〔成员〕
股票期权〔成员〕
|
4月. 20, 2006
普通股〔成员〕
股票期权〔成员〕
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3月. 31, 2004
Private Placement Offering [Member]
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3月. 31, 2002
Private Placement Offering [Member]
年
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12月. 31, 2011
Private Placement Offering [Member]
|
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Common Stock Options, Restricted Stock, Warrants And Changes In Capitalization [Line Items] | |||||||||||||||||||
Customary work week number of hours, minimum | 40 | ||||||||||||||||||
Number of shares available for grant | 883,000 | ||||||||||||||||||
Options granted for the purchase of shares | 997,269 | 627,337 | |||||||||||||||||
Stock that may be issued under incentive plan before the amendment | 1,904,606 | ||||||||||||||||||
Stock that may be issued under incentive plan after the amendment | 3,000,000 | ||||||||||||||||||
Option granted prior to new stock option plan | 627,337 | ||||||||||||||||||
公开发行价格 | $ 29.00 | $ 28.75 | $ 32.00 | $ 13.50 | |||||||||||||||
Issuance of common stock in public offering, shares | 4,600,000 | 3,450,000 | 2,760,000 | 187,022 | 1,481,481 | ||||||||||||||
Number of shares of common stock to purchase for each warrant | 250 | ||||||||||||||||||
普通股,票面价值 | $ 0.01 | $ 0.01 | $ 0.01 | ||||||||||||||||
Proceeds from the sale of shares | $ 128.0 | $ 94.7 | $ 84.3 | $ 21.6 | |||||||||||||||
Private placement offering units | 10,000 | ||||||||||||||||||
Preferred stock dividend rate | 12.00% | 12.00% | 15.00% | 12.00% | |||||||||||||||
签发认股权证 | 2,322,962 | ||||||||||||||||||
Exercise price of warrants issued | $ 1.19 | ||||||||||||||||||
认股权证优秀 | 8,875 | ||||||||||||||||||
认股权证期限 | 10 | ||||||||||||||||||
Warrants converted into common stock | 29,832 |