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Equity and Convertible Debentures Financing - Repurchase of Securities (Details) (USD $) | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Mar. 31, 2015 | Feb. 28, 2015 | Jan. 31, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 18, 2013
Equity [Abstract] |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  | $ 350,000.00 us-gaap_StockRepurchaseProgramAuthorizedAmount1
($ in thousands) Value of Shares that May Yet Be Purchased Under the Plan or Program | $ 85,000 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 | $ 85,000 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 | $ 253,000 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 | $ 85,000 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 | $ 256,000 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 |
Shares purchased (in shares) | 0 us-gaap_TreasuryStockSharesAcquired | 75,000 us-gaap_TreasuryStockSharesAcquired | 1,600 us-gaap_TreasuryStockSharesAcquired | 76,600 us-gaap_TreasuryStockSharesAcquired | 1,353 us-gaap_TreasuryStockSharesAcquired |
Average Price Paid Per Share | $ 0.00 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 2.25 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 2.01 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 2.25 us-gaap_TreasuryStockAcquiredAverageCostPerShare | $ 1.98 us-gaap_TreasuryStockAcquiredAverageCostPerShare |

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- Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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