Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.10.0.1
Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2018
Dec. 31, 2017
Condensed Consolidated Balance Sheets    
Preferred stock, par value (in dollars per share) $ 0.005 $ 0.005
Preferred stock, shares authorized 50,000,000 50,000,000
Common stock, par value (in dollars per share) $ 0.005 $ 0.005
Common stock, shares authorized 500,000,000 500,000,000
Common stock, shares issued 58,382,026 57,450,056
Common stock, shares outstanding 45,375,594 44,700,641
Treasury stock, shares 13,006,432 12,749,415