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Issued and Outstanding Preferred Shares and Preference Units - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Class of Stock [Line Items] |  |  |
Preferred Stock, Shares Authorized | 100,000,000 | 100,000,000 |
Preferred Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01 |
8.29% Series K Cumulative Redeemable Preferred; liquidation value $50 per share; 745,600 shares issued and outstanding at December 31, 2016 and 2015 | $ 37,280 | $ 37,280 |
Premium on redemption of Preferred Shares | $ 0 | $ (3,486) | $ 0
Series K Preferred Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock Preference Units Issued | 745,600 | 745,600 |
Preferred Stock Preference Units Outstanding | 745,600 | 745,600 |
Preferred Stock Preference Units Redemption Price Per Share Unit | $ 50.00 | $ 50.00 |
Preferred Stock Preference Units Dividend Rate Percentage | 8.29% | 8.29% | 8.29%
Preferred Stocks Preference Units Redemption Date | Dec. 10, 2026 |  |
Annual Dividend Per Preferred Share Preference Unit | $ 4.145 |  |
8.29% Series K Cumulative Redeemable Preferred; liquidation value $50 per share; 745,600 shares issued and outstanding at December 31, 2016 and 2015 | $ 37,280 | $ 37,280 |
Treasury Stock, Shares, Retired |  | 254,400 |
Redemption of Preferred Shares |  | $ 12,700 |
Treasury Stock Retired, Cash Consideration |  | 16,300 |
Premium on redemption of Preferred Shares |  | 3,500 |
ERPOP [Member] |  |  |
Class of Stock [Line Items] |  |  |
8.29% Series K Cumulative Redeemable Preference Units; liquidation value $50 per unit; 745,600 units issued and outstanding at December 31, 2016 and 2015 | 37,280 | 37,280 |
Premium on redemption of Preferred Shares | $ 0 | $ 3,486 | $ 0
ERPOP [Member] | Series K Preferred Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock Preference Units Issued | 745,600 | 745,600 |
Preferred Stock Preference Units Outstanding | 745,600 | 745,600 |
Preferred Stock Preference Units Redemption Price Per Share Unit | $ 50.00 | $ 50.00 |
Preferred Stock Preference Units Dividend Rate Percentage | 8.29% | 8.29% |
Preferred Stocks Preference Units Redemption Date | Dec. 10, 2026 |  |
Annual Dividend Per Preferred Share Preference Unit | $ 4.145 |  |
8.29% Series K Cumulative Redeemable Preference Units; liquidation value $50 per unit; 745,600 units issued and outstanding at December 31, 2016 and 2015 | $ 37,280 | $ 37,280 |
Treasury Stock, Shares, Retired |  | 254,400 |
Redemption of Preferred Shares |  | $ 12,700 |
Treasury Stock Retired, Cash Consideration |  | 16,300 |
Premium on redemption of Preferred Shares |  | $ 3,500 |

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- Definition Total number of preferred shares/preference units issued to security holders. May be all or portion of the number of preferred shares/preference units authorized. Excludes preferred shares/preference units that are classified as debt. + References No definition available. + Details
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- Definition Aggregate number of preferred shares/preference units held by security holders. Does not include preferred shares/preference units that have been repurchased. + References No definition available. + Details
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- Definition The price per share/unit at which the preferred share/preference units of the entity has priority over common shares/units 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 these preferred shares/units are solely within the control of the issuer. + References No definition available. + Details
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- Definition The excess of the (1) fair value of consideration transferred to the holders of a security in excess of (2) the carrying amount of the security reported on the registrant's balance sheet, which will be deducted from net earnings to derive net earnings available to common shareholders. This amount is generally an adjustment considered in the computation of earnings per share. + References No definition available. + Details
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