CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
CONSOLIDATED BALANCE SHEETS
Preferred stock, par or stated value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	600,000,000	600,000,000
Common stock, shares issued	23,495,466	19,245,302
Common stock, shares outstanding	23,472,574	19,222,410
Treasury stock, shares	22,892	22,892