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Consolidated Statements Of Stockholders' Equity (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Stock-based incentive plan, shares | 133,000 | 1,567,000 | 2,426,000
Preferred Stock |  |  |
Accrued dividends |  | $ 801 |
Common Stock |  |  |
Issuance of shares in common stock offering |  | 15,000,000 |
Offering issuance costs |  | $ 2,279 |

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