Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Series E Convertible Preferred Stock) (Details)

v3.6.0.2
Stockholders' Equity (Series E Convertible Preferred Stock) (Details) - $ / shares
Dec. 31, 2016
Jul. 07, 2016
Jun. 30, 2016
Class of Stock [Line Items]      
Redemption price (in dollars per share)   $ 5.20  
Series E Preferred Stock      
Class of Stock [Line Items]      
Preferred stock, shares authorized (in shares)   10,000  
Preferred stock, par value (in dollars per share)   $ 1,000  
Preferred stock, shares outstanding (in shares) 4,435   0