CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized	500,000,000	500,000,000
Common stock, issued	124,300,341	123,239,230
Common stock, outstanding	124,300,341	123,239,230
Preferred stock, seriea A, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, series A shares, authorized	3,000,000	3,000,000
Preferred stock, series A shares, outstanding
Preferred stock, series B, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, series B shares, authorized	10,000,000	10,000,000
Preferred stock, series B shares, outstanding