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Preferred Stock (Narrative) (Details) - USD ($) |  |  |  |  |  | 3 Months Ended | 4 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 21, 2017 | Feb. 17, 2017 | Feb. 15, 2016 | Feb. 15, 2014 | Jan. 30, 2009 | Mar. 21, 2017 | Mar. 21, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | May 26, 2015
Preferred stock, shares issued |  |  |  |  | 30,000 |  |  |  |  |  |
Class of warrant or right, number of securities called by warrants or rights |  |  |  |  | 326,323 |  |  |  |  |  |
Class of warrant or right, exercise price of warrants or rights |  |  |  |  | $ 13.79 |  |  |  |  |  |
Proceeds from issuance of preferred stock and preference stock |  |  |  |  | $ 30,000,000 |  |  |  |  |  |
Repurchase of warrant |  |  |  |  |  |  |  |  |  |  | $ 120,786
Preferred stock, dividend rate, percentage |  |  |  | 9.00% | 5.00% |  |  |  |  |  |
Preferred stock, liquidation preference per share |  |  |  | $ 1,000 | $ 1,000 |  |  |  |  |  |
Dividends |  |  |  |  |  |  |  |  |  | $ 7,900,000 |
Preferred Stock, redemption date |  |  | Feb. 15, 2016 |  |  |  |  |  |  |  |
Aggregate liquidation amount of Preferred Stock |  |  | $ 10,000,000 |  |  |  |  |  |  |  |
Preferred stock redeemed, shares |  |  | 10,000 |  |  |  |  |  |  |  |
Proceeds from common stock |  |  |  |  |  |  |  | $ 0 | $ 1,000 |  |
Series A Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued |  |  |  |  |  |  |  | 20,000 | 30,000 |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  | 20,000 | 30,000 |  |
Preferred stock, dividend rate, percentage |  |  |  |  |  |  |  | 9.00% | 9.00% |  |
Preferred stock, liquidation preference per share |  |  |  |  |  |  |  | $ 1,000 | $ 1,000 |  |
Subsequent Event [Member] | Series A Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding |  | 20,000 |  |  |  |  |  |  |  |  |
Preferred Stock, redemption date | Mar. 21, 2017 |  |  |  |  |  |  |  |  |  |
Aggregate liquidation amount of Preferred Stock |  | $ 10,000,000 |  |  |  |  |  |  |  |  |
Preferred stock redeemed, shares |  | 10,000 |  |  |  |  |  |  |  |  |
Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |  |
Proceeds from common stock |  |  |  |  |  | $ 7,000,000 | $ 7,000,000 |  |  |  |

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + 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)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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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 + Details
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- Definition Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + 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 Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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 Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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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