CONDENSED CONSOLIDATED BALANCE SHEETS [Parenthetical] - $ / shares	Sep. 30, 2018	Dec. 31, 2017
Common stock, par value (in dollars per share)	$ 0.0005	$ 0.0005
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares outstanding	54,385,411	54,385,411