Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.8.0.1
Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Mar. 31, 2018
Dec. 31, 2017
Senior common stock, par value (in dollars per share) $ 0.001 $ 0.001
Senior common stock, shares authorized 4,450,000 4,450,000
Senior common stock, shares issued 892,031 904,819
Senior common stock, shares outstanding 892,031 904,819
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized 34,200,000 34,200,000
Common stock, shares issued 28,423,908 28,384,016
Common stock, shares outstanding 28,423,908 28,384,016
Series D Preferred Stock    
Mezzanine equity, par value (in dollars per share) $ 0.001 $ 0.001
Mezzanine equity, liquidation preference (in dollars per share) $ 25 $ 25
Mezzanine equity, shares authorized 6,000,000 6,000,000
Mezzanine equity, shares issued 3,459,431 3,421,853
Mezzanine equity, shares outstanding 3,459,431 3,421,853
Series A and B Preferred Stock    
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 5,350,000
Redeemable preferred stock, shares issued 2,264,000 2,264,000
Redeemable preferred stock, shares outstanding 2,264,000 2,264,000