Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheet (Parenthetical)

v3.8.0.1
Consolidated Balance Sheet (Parenthetical) - $ / shares
Mar. 31, 2018
Dec. 31, 2017
Preferred stock, par value (usd per share) $ 0.0001 $ 0.0001
Preferred stock, shares authorized (shares) 25,000,000 25,000,000
Preferred stock, shares issued (shares) 0 0
Preferred stock, shares outstanding (shares) 0 0
Common Stock [Member]    
Common Stock, Par or Stated Value Per Share $ 0.0001 $ 0.0001
Common Stock, Shares Authorized 550,000,000 550,000,000
Common stock, shares issued (shares) 68,091,000 67,400,000
Common stock, shares outstanding (shares) 68,091,000 67,400,000
Common Class A [Member]    
Common Stock, Par or Stated Value Per Share $ 0.0001 $ 0.0001
Common Stock, Shares Authorized 441,124,000 441,124,000
Common stock, shares issued (shares) 0 0
Common stock, shares outstanding (shares) 0 0
Common Class B [Member]    
Common Stock, Par or Stated Value Per Share $ 0.0001 $ 0.0001
Common Stock, Shares Authorized 493,430,000 493,430,000
Common stock, shares issued (shares) 0 0
Common stock, shares outstanding (shares) 0 0