CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Accounts receivable, allowance	$ 475,000	$ 475,000
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	100,608,155	97,203,950
Common stock, shares outstanding	100,608,155	97,203,950