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Stockholders' Equity (Details Textual) (USD $) In Thousands, except Per Share data, unless otherwise specified |  |  |  | 6 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2014 | Jan. 09, 2014 | Dec. 31, 2013 | Jun. 30, 2014 Common Stock [Member]
Stockholders' Equity [Line Items] |  |  |  |
Issuance of stock, shares |  |  |  | 2,530
Common stock, par or stated value per share | $ 0.01 |  | $ 0.01 |
Sale of Stock, Price Per Share |  | $ 45.75 |  |

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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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