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5.5% Series B Cumulative Convertible Preferred Stock (Details) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | ---
Apr. 05, 2017 USD ($) $ / shares shares | Mar. 07, 2017 USD ($) $ / shares shares | Apr. 26, 2016 USD ($) $ / shares shares | Mar. 31, 2017 USD ($) $ / shares shares | Mar. 31, 2016 USD ($) | Dec. 31, 2016 shares
Class of Stock [Line Items] |  |  |  |  |  |
Preferred dividends | $ |  |  |  | $ 1,673 | $ 894 |
Series B Preferred Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Preferred stock dividend rate |  | 5.50% | 5.50% | 5.50% |  |
Initial conversion price (in dollars per share) |  |  |  | $ 18.90 |  |
Preferred stock conversion rate |  |  |  | 1.3228 |  |
Consecutive trading days |  |  |  | 45 days |  |
Days ending prior to notice of conversion |  |  |  | 3 days |  |
Issuance of common stock (in shares) | shares |  | 2,000,000 | 290,850 |  |  |
Issuance of preferred stock (in dollars per share) |  | $ 20.19 | $ 17.24 |  |  |
Proceeds from issuance of preferred stock | $ |  | $ 39,900 | $ 5,000 |  |  |
Proceeds from issuance of stock, net of discounts and expenses | $ |  | $ 38,400 | $ 4,200 |  |  |
Liquidation preference per share (in dollars per share) |  | $ 25.00 | $ 25.00 |  |  |
Series B preferred stock, shares outstanding (in shares) | shares |  |  |  | 4,865,850 |  | 2,890,850
Annual preferred stock dividend (in dollars per share) |  |  |  | $ 1.375 |  |
Series B Preferred Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Issuance of preferred stock (in dollars per share) | $ 20.19 |  |  |  |  |
Series B Preferred Stock [Member] | Subsequent Event [Member] | Over-Allotment Option [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Issuance of common stock (in shares) | shares | 100,000 |  |  |  |  |
Proceeds from issuance of stock, net of discounts and expenses | $ | $ 1,900 |  |  |  |  |
Series B Preferred Stock [Member] | Minimum [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Percent of conversion price |  |  |  | 110.00% |  |

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- Definition Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instruments must exceed threshold percentage for a specified number of trading days to trigger conversion feature, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + 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 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 3: 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.(d)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 + Details
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- Definition Amount to be paid per share that is classified as temporary equity by entity upon redemption. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27011957&loc=d3e177068-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (27) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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