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STOCKHOLDERS' EQUITY (Details) |  |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended
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Nov. 30, 2015 USD ($) | Oct. 22, 2015 USD ($) | Jul. 20, 2015 USD ($) | Apr. 30, 2015 USD ($) | Jul. 22, 2013 USD ($) | Apr. 22, 2013 USD ($) | Jan. 21, 2013 USD ($) | Dec. 31, 2013 USD ($) | Sep. 30, 2013 USD ($) | Jun. 30, 2013 USD ($) | Mar. 31, 2013 USD ($) | Dec. 31, 2015 USD ($) item $ / shares shares | Dec. 31, 2014 USD ($) $ / shares shares | Dec. 31, 2013 USD ($)
Stock repurchase program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of classes of preferred stock outstanding | item |  |  |  |  |  |  |  |  |  |  |  | 1 |  |
Dividend paid | $ |  |  |  |  |  |  |  |  |  |  |  | $ 283,543 | $ 172,838 | $ 230,449
Common stock authorized (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 100,000,000 | 100,000,000 |
Common stock outstanding (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 28,619,874 | 27,613,397 |
Preferred Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock authorized (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 |  |
Preferred stock par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 1 |  |
Class B |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock authorized (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 | 5,000,000 |
Preferred stock par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 1 | $ 1 |
Number of series of preferred stock class B | item |  |  |  |  |  |  |  |  |  |  |  | 5 |  |
Preferred stock, remaining authorized shares to which series have Not been assigned | shares |  |  |  |  |  |  |  |  |  |  |  | 4,218,555 |  |
Series I, Class B |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 1 | $ 1 |
Preferred stock outstanding (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 98,500 | 98,500 |
Cumulative annual dividend payable quarterly (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 0.50 |  |
Dividend paid | $ |  | $ 12,313 | $ 12,313 | $ 37,891 | $ 12,938 | $ 12,938 | $ 12,938 | $ 12,938 | $ 12,938 | $ 12,938 | $ 12,938 | $ 62,516 | $ 38,814 | 38,814
Preferred stock dividend in arrears | $ |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |
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 | shares |  |  |  |  |  |  |  |  |  |  |  | 0 | 5,000 |
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 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 1 | $ 1 |
Preferred stock outstanding (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 171,200 | 176,200 |
Cumulative annual dividend payable quarterly (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 1.00 |  |
Dividend paid | $ |  | $ 44,050 | $ 44,050 | $ 132,926 | $ 44,675 | $ 44,675 | $ 44,675 | $ 44,675 | $ 44,675 | $ 44,675 | $ 44,675 | $ 221,026 | $ 134,025 | $ 134,025
Preferred stock dividend in arrears | $ |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |
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 | shares |  |  |  |  |  |  |  |  |  |  |  | 5,000 | 2,500 |
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 | item |  |  |  |  |  |  |  |  |  |  |  | 12 |  |
Right of preferred stock holders to elect a specified proportion of board of directors |  |  |  |  |  |  |  |  |  |  |  | 0.33 |  |
Series III, Class B |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 1 | $ 1 |
Preferred stock outstanding (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 129,245 | 130,245 |
Cumulative annual dividend payable quarterly (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 1.00 |  |
Preferred stock dividend in arrears | $ |  |  |  |  |  |  |  |  |  |  |  | $ 3,887,000 |  |
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 | shares |  |  |  |  |  |  |  |  |  |  |  | 1,000 | 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 repurchase program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 1 | $ 1 |
Preferred stock outstanding (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 342,500 | 542,500 |
Cumulative annual dividend payable quarterly (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 1.00 |  |
Preferred stock dividend in arrears | $ | $ 3,094,795 |  |  |  |  |  |  |  |  |  |  | $ 5,456,000 |  |
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 | shares |  |  |  |  |  |  |  |  |  |  |  | 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 |  |
Number of shares cancelled as a result of the agreement entered in to by the company | shares |  |  |  |  |  |  |  |  |  |  |  | 200,000 |  |
Series V, Class B |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 1 | $ 1 |
Preferred stock outstanding (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 40,000 | 40,000 |
Cumulative annual dividend payable quarterly (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 0.32 |  |
Preferred stock dividend in arrears | $ |  |  |  |  |  |  |  |  |  |  |  | $ 970,000 |  |
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 | shares |  |  |  |  |  |  |  |  |  |  |  | 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 Class C |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock authorized (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 |  |
Preferred stock par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 1 |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock authorized (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 100,000,000 | 100,000,000 |
Common stock no par value (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |
Common stock outstanding (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 28,619,874 | 27,613,397 |

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