Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Paranthetical)

v3.8.0.1
Consolidated Balance Sheets (Paranthetical) - $ / shares
Dec. 31, 2017
Dec. 31, 2016
Preferred stock par value $ 0.01 $ 0.01
Preferred stock shares authorized 50,000,000 50,000,000
Preferred shares issued 0 0
Series A common stock    
Common stock par value $ 0.01 $ 0.01
Common stock shares authorized 500,000,000 500,000,000
Common Stock, Shares, Issued 26,301,755 26,251,533
Common Stock, Shares, Outstanding 26,301,755 26,251,533
Series B common stock    
Common stock par value $ 0.01 $ 0.01
Common stock shares authorized 18,750,000 18,750,000
Common Stock, Shares, Issued 2,455,179 2,467,509
Common Stock, Shares, Outstanding 2,455,179 2,467,509
Series C common stock    
Common stock par value $ 0.01 $ 0.01
Common stock shares authorized 500,000,000 500,000,000
Common Stock, Shares, Issued 152,563,229 153,019,547
Common Stock, Shares, Outstanding 152,563,229 153,019,547