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Shareholders' Equity - Share Capital Transactions (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended | 0 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2013 | Sep. 28, 2011 | Aug. 18, 2011 | Dec. 31, 2014
Class of Stock [Line Items] |  |  |  |
Redemption or conversion of preferred stock | $ (7,000)us-gaap_StockRedeemedOrCalledDuringPeriodValue |  |  |
Common Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Number of shares called by warrant |  | 79,037 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember |  |
Repurchase of common stock warrant |  | 185 us-gaap_PaymentsForRepurchaseOfWarrants / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember |  |
Series C Preferred Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Shares issued during the period |  |  | 7,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesCPreferredStockMember |
Shares issued during the period, value |  |  | 7,000 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesCPreferredStockMember |
Shares redeemed or converted in the period |  |  |  | 7,000 us-gaap_StockRedeemedOrCalledDuringPeriodShares / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesCPreferredStockMember
Redemption or conversion of preferred stock |  |  |  | 7,088 us-gaap_StockRedeemedOrCalledDuringPeriodValue / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesCPreferredStockMember
Preferred Stock, Redemption Price Per Share |  |  |  | $ 1 us-gaap_PreferredStockRedemptionPricePerShare / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesCPreferredStockMember
Series A Preferred Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Shares redeemed or converted in the period |  |  | 7,000 us-gaap_StockRedeemedOrCalledDuringPeriodShares / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember |
Redemption or conversion of preferred stock |  |  | $ 7,000 us-gaap_StockRedeemedOrCalledDuringPeriodValue / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember |

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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Subparagraph 2 -Article 4 + Details
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- Definition The aggregate amount paid by the entity to reacquire the right to purchase equity shares at a predetermined price, usually issued together with corporate debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 + Details
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- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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- Definition Number of stock bought back by the entity at the exercise price or redemption price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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