CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Net of allowance	$ 3,500,000	$ 1,200,000
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	250,000,000	250,000,000
Common stock, issued	64,589,075	64,455,174
Common stock, outstanding	64,589,075	64,455,174
Series A convertible preferred stock
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, authorized	10,000,000	10,000,000
Preferred stock, issued	650,000	650,000
Preferred stock, outstanding	650,000	650,000
Preferred liquidation preference	$ 65.0	$ 65.0