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Share Capital, textual 1 (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2015
Class of Stock [Line Items] |  |  |  |
Treasury shares | 113,076 |  |  | (0)
Common Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Number of shares to be repurchased | 2,000,000 |  |  |
Preferred Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Repurchase program amount |  |  |  | $ 20,000
Series B cumulative redeemable perpetual preferred shares |  |  |  |
Class of Stock [Line Items] |  |  |  |
Repurchased shares | 109,397 |  |  |
Private Placement | Common Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Stock Issued During Period, Shares, New Issues | 2,727,272 |  | 1,000,000 |
Private Placement | Series B cumulative redeemable perpetual preferred shares |  |  |  |
Class of Stock [Line Items] |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  | 800,000 |
June 2013 public offering |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred Stock, Discount On Shares |  |  | $ 672 |
Payments of Stock Issuance Costs |  |  | 463 |
Proceeds on issuance of preferred stock, net |  |  | $ 38,865 |
June 2013 public offering | Series B cumulative redeemable perpetual preferred shares |  |  |  |
Class of Stock [Line Items] |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  | 800,000 |
Share Price |  |  | $ 25 |
Preferred Shares, Dividend Rate Percentage |  |  | 8.00% |
Preferred Shares, Per Share Amounts Of Preferred Dividends In Arrears |  |  | $ 2 |
Preferred Shares, Redemption Date |  |  | Jun. 30, 2016 |
Preferred Shares, Redemption Price Per Share |  |  | $ 25 |
Preferred Shares Conditions For Dividend Rate Increase | If the Company fails to comply with certain covenants as these terms are defined in the applicable agreement, defaults on any of its credit facilities, fails to pay four quarterly dividends payable in arrears or if the Series B preferred shares are not redeemed at the option of the Company, in whole by July 30, 2018, the dividend rate payable on the Series B preferred shares increases quarterly to a rate that is 1.25 times the dividend rate payable on the series B preferred shares , subject to an aggregate maximum rate per annum of 25% prior to July 30, 2016 and 30% thereafter. |  |  |
November 2013 public offering |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common Stock, Discount on Shares |  |  | $ 1,898 |
Payments of Stock Issuance Costs |  |  | 275 |
Proceeds on issuance of common stock, net |  |  | $ 47,980 |
November 2013 public offering | Common Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  | 5,750,000 |
Share Price |  |  | $ 7.43 |
May 2014 public offering |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred Stock, Discount On Shares |  | $ 1,744 |  |
Payments of Stock Issuance Costs |  | 252 |  |
Proceeds on issuance of preferred stock, net |  | $ 55,504 |  |
May 2014 public offering | Series C cumulative redeemable perpetual preferred shares |  |  |  |
Class of Stock [Line Items] |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 2,300,000 |  |
Share Price |  | $ 25 |  |
Preferred Shares, Dividend Rate Percentage |  | 8.00% |  |
Preferred Shares, Per Share Amounts Of Preferred Dividends In Arrears |  | $ 2 |  |
Preferred Shares, Redemption Date |  | May 31, 2019 |  |
Preferred Shares, Redemption Price Per Share |  | $ 25 |  |
June 2014 public offering |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred Stock, Discount On Shares |  | $ 2,369 |  |
Payments of Stock Issuance Costs |  | 211 |  |
Proceeds on issuance of preferred stock, net |  | $ 77,420 |  |
June 2014 public offering | Series D cumulative redeemable perpetual preferred shares |  |  |  |
Class of Stock [Line Items] |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 3,200,000 |  |
Share Price |  | $ 25 |  |
Preferred Shares, Dividend Rate Percentage |  | 8.00% |  |
Preferred Shares, Per Share Amounts Of Preferred Dividends In Arrears |  | $ 2 |  |
Preferred Shares, Redemption Date |  | Jun. 30, 2019 |  |
Preferred Shares, Redemption Price Per Share |  | $ 25 |  |
December 2016 public offering |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common Stock, Discount on Shares | $ 710 |  |  |
Payments of Stock Issuance Costs | 379 |  |  |
Proceeds on issuance of common stock, net | $ 17,204 |  |  |
December 2016 public offering | Common Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Stock Issued During Period, Shares, New Issues | 15,640,000 |  |  |
Share Price | $ 1.1 |  |  |

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