Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
Preferred stock, par value	$ 0.001
Class A Voting Common Stock
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	24,506,647	21,822,015
Common stock, shares outstanding	24,506,647	21,822,015
Class B Non-Voting Common Stock
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	5,000	5,000
Common stock, shares issued	2,500	2,500
Common stock, shares outstanding	2,500	2,500
Series A-1 Convertible Participating Preferred Stock
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares issued	83,968	0
Preferred stock, shares outstanding	83,968	0
Series B Convertible Participating Preferred Stock
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0