Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheet (Parenthetical)

v3.10.0.1
Consolidated Balance Sheet (Parenthetical) - $ / shares
shares in Thousands
Jun. 30, 2018
Dec. 31, 2017
Statement of Financial Position [Abstract]    
Preferred stock, par value (usd per share) $ 0.0001 $ 0.0001
Preferred stock, shares authorized (shares) 25,000 25,000
Preferred stock, shares issued (shares) 0 0
Preferred stock, shares outstanding (shares) 0 0
Common stock, par value (usd per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (shares) 550,000 550,000
Common stock, shares issued (shares) 68,608 67,400
Common stock, shares outstanding (shares) 68,608 67,400