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STOCKHOLDERS' EQUITY (Details) (USD $) | 0 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 21, 2013 | Oct. 22, 2012 | Jul. 31, 2012 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
STOCKHOLDERS' EQUITY |  |  |  |  |  |
Preferred stock par value (in dollars per share) |  |  |  | $ 1 | $ 1 |
Number of classes of preferred stock outstanding |  |  |  | 1 |  |
Dividend paid |  |  |  | $ 230,450 | $ 364,625 | $ 876,566
Common stock authorized (in shares) |  |  |  | 100,000,000 | 100,000,000 |
Common stock no par value (in dollars per share) |  |  |  | $ 0.00 | $ 0.00 |
Common stock outstanding (in shares) |  |  |  | 27,252,463 | 25,318,700 |
Number of shares repurchased |  |  |  | 67,102 |  |
Preferred Stock Class A |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |
Preferred stock authorized (in shares) |  |  |  | 5,000,000 |  |
Preferred stock par value (in dollars per share) |  |  |  | $ 1.00 |  |
Preferred Stock Class B |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |
Preferred stock authorized (in shares) |  |  |  | 5,000,000 | 5,000,000 |
Preferred stock par value (in dollars per share) |  |  |  | $ 1.00 | $ 1.00 |
Number of series of preferred stock class B |  |  |  | 5 |  |
Preferred stock, remaining authorized shares to which series have Not been assigned |  |  |  | 3,998,448 |  |
Series I Class B |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |
Preferred stock par value (in dollars per share) |  |  |  | $ 1 | $ 1 |
Preferred stock outstanding (in shares) |  |  |  | 103,500 | 103,500 |
Cumulative annual dividend payable quarterly (in dollars per share) |  |  |  | $ 0.50 |  |
Dividend paid | 12,938 | 12,938 | 38,813 | 51,750 | 90,000 | 216,000
Preferred stock dividend in arrears |  |  |  | 13,000 | 13,000 |
Period after which stock is redeemable at the option of the entity |  |  |  | 3 years |  |
Preferred stock redemption price (in dollars per share) |  |  |  | $ 7.50 |  |
Preferred stock conversion ratio |  |  |  | 1 |  |
Period after which stock can be converted at the option of the stockholders |  |  |  | 3 years |  |
Number of shares of preferred stock converted into common stock |  |  |  | 0 | 0 |
Amount per share the holders of the preferred stock entitled to in voluntary or involuntary dissolution, liquidation or winding up of the Company (in dollars per share) |  |  |  | $ 6.25 |  |
Series II Class B |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |
Preferred stock par value (in dollars per share) |  |  |  | $ 1 | $ 1 |
Preferred stock outstanding (in shares) |  |  |  | 178,700 | 178,700 |
Cumulative annual dividend payable quarterly (in dollars per share) |  |  |  | $ 1.00 |  |
Dividend paid | 44,675 | 44,675.00 | 134,025 | 178,700 | 274,625 | 660,566
Preferred stock dividend in arrears |  |  |  | 45,000 | 45,000 |
Period after which stock is redeemable at the option of the entity |  |  |  | 3 years |  |
Preferred stock redemption price (in dollars per share) |  |  |  | $ 15.00 |  |
Preferred stock conversion ratio |  |  |  | 1 |  |
Period after which stock can be converted at the option of the stockholders |  |  |  | 3 years |  |
Number of shares of preferred stock converted into common stock |  |  |  | 0 | 0 |
Amount per share the holders of the preferred stock entitled to in voluntary or involuntary dissolution, liquidation or winding up of the Company (in dollars per share) |  |  |  | $ 12.50 |  |
Number of consecutive quarters in which preferred stockholders have no voting right until dividends are in arrears |  |  |  | 12 |  |
Right of preferred stock holders to elect a specified proportion of board of directors |  |  |  | 0.33 |  |
Series III Class B Stock |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |
Preferred stock par value (in dollars per share) |  |  |  | $ 1 | $ 1 |
Preferred stock outstanding (in shares) |  |  |  | 130,245 | 130,245 |
Cumulative annual dividend payable quarterly (in dollars per share) |  |  |  | $ 1.00 |  |
Preferred stock dividend in arrears |  |  |  | 3,497,000 | 3,366,000 |
Period after which stock is redeemable at the option of the entity |  |  |  | 3 years |  |
Preferred stock redemption price (in dollars per share) |  |  |  | $ 15.00 |  |
Preferred stock conversion ratio |  |  |  | 1 |  |
Period after which stock can be converted at the option of the stockholders |  |  |  | 3 years |  |
Number of shares of preferred stock converted into common stock |  |  |  | 0 | 0 |
Amount per share the holders of the preferred stock entitled to in voluntary or involuntary dissolution, liquidation or winding up of the Company (in dollars per share) |  |  |  | $ 12.50 |  |
Series IV Class B Stock |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |
Preferred stock par value (in dollars per share) |  |  |  | $ 1 | $ 1 |
Preferred stock outstanding (in shares) |  |  |  | 542,500 | 542,500 |
Cumulative annual dividend payable quarterly (in dollars per share) |  |  |  | $ 1.00 |  |
Preferred stock dividend in arrears |  |  |  | 6,881,000 | 6,338,000 |
Period after which stock is redeemable at the option of the entity |  |  |  | 3 years |  |
Preferred stock redemption price (in dollars per share) |  |  |  | $ 11.00 |  |
Preferred stock conversion ratio |  |  |  | 1 |  |
Period after which stock can be converted at the option of the stockholders |  |  |  | 3 years |  |
Number of shares of preferred stock converted into common stock |  |  |  | 0 | 0 |
Amount per share the holders of the preferred stock entitled to in voluntary or involuntary dissolution, liquidation or winding up of the Company (in dollars per share) |  |  |  | $ 11.00 |  |
Series V Class B Stock |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |
Preferred stock par value (in dollars per share) |  |  |  | $ 1 | $ 1 |
Preferred stock outstanding (in shares) |  |  |  | 46,607 | 46,607 |
Cumulative annual dividend payable quarterly (in dollars per share) |  |  |  | $ 0.32 |  |
Preferred stock dividend in arrears |  |  |  | $ 929,000 | $ 914,000 |
Period after which stock is redeemable at the option of the entity |  |  |  | 2 years |  |
Preferred stock redemption price (in dollars per share) |  |  |  | $ 4.40 |  |
Number of shares of preferred stock converted into common stock |  |  |  | 0 | 0 |
Amount per share the holders of the preferred stock entitled to in voluntary or involuntary dissolution, liquidation or winding up of the Company (in dollars per share) |  |  |  | $ 4.40 |  |
Preferred Stock Class C |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |
Preferred stock authorized (in shares) |  |  |  | 5,000,000 |  |
Preferred stock par value (in dollars per share) |  |  |  | $ 1.00 |  |
Common stock |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |
Common stock authorized (in shares) |  |  |  | 100,000,000 |  |
Common stock no par value (in dollars per share) |  |  |  | $ 0.00 | $ 0.00 |
Common stock outstanding (in shares) |  |  |  | 27,252,463 | 25,318,700 |
Number of shares repurchased |  |  |  | 67,102 |  |

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