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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
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Sep. 30, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Stockholders' equity: | ||
| Preferred Stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Preferred Stock, authorized (in shares) | 10,000,000 | 10,000,000 |
| Preferred Stock, outstanding (in shares) | 0 | 0 |
| Common Stock, par value (in dollars share) | $ 0.01 | $ 0.01 |
| Common Stock, authorized (in shares) | 200,000,000 | 200,000,000 |
| Common Stock, outstanding (in shares) | 60,882,667 | 60,515,556 |