Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.5.0.2
Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Sep. 30, 2016
Dec. 31, 2015
Senior common stock, par value (in dollars per share) $ 0.001 $ 0.001
Senior common stock, shares authorized 4,450,000 7,500,000
Senior common stock, shares issued 959,552 972,214
Senior common stock, shares outstanding 959,552 972,214
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized 34,040,000 38,500,000
Common stock, shares issued 23,601,153 22,485,607
Common stock, shares outstanding 23,601,153 22,485,607
Series A and B Preferred Stock [Member]    
Redeemable preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Redeemable preferred stock, liquidation preference (in dollars per share) $ 25 $ 25
Redeemable preferred stock, shares authorized 5,350,000 2,300,000
Redeemable preferred stock, shares issued (in shares) 2,264,000 2,150,000
Redeemable preferred stock, shares outstanding 2,264,000 2,150,000
Series D Preferred Stock [Member]    
Mezzanine equity, par value (in dollars per share) $ 0.001  
Mezzanine equity, liquidation preference (in dollars per share) $ 25  
Mezzanine equity, shares authorized 6,000,000 0
Mezzanine equity, shares issued 2,775,589 0
Mezzanine equity, shares outstanding 2,775,589 0
Mandatorily Redeemable Preferred Stock [Member] | Series C Preferred Stock [Member]    
Redeemable preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Redeemable preferred stock, liquidation preference (in dollars per share) $ 25 $ 25
Redeemable preferred stock, shares authorized 160,000 1,700,000
Redeemable preferred stock, shares issued (in shares) 0 1,540,000
Redeemable preferred stock, shares outstanding 0 1,540,000