Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Class A common stock, par value	$ 0.01	$ 0.01
Class A common stock, shares authorized	100,000,000	100,000,000
Class A common stock, shares issued	7,080,771	6,680,065
Class A common stock, shares outstanding	7,080,771	6,680,065
Series A convertible preferred stock, par value	$ 0.01	$ 0.01
Series A convertible preferred stock, shares authorized	1,000,000	1,000,000
Series A convertible preferred stock, shares outstanding	449,581	0