INVESTMENT IN HOTEL PROPERTIES, NET - Pro forma financial information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Business Combinations [Abstract]
Revenues	$ 138,682	$ 132,580
Income from hotel operations	50,248	47,633
Net income	8,887	8,344
Net income (loss) attributable to common stockholders, net of amount allocated to participating securities	$ 5,098	$ (545)
Basic net income (loss) per share attributable to common shareholders (in dollars per share)	$ 0.05	$ (0.01)
Diluted net income (loss) per share attributable to common shareholders (in dollars per share)	$ 0.05	$ (0.01)
Real estate tax expense, depreciation expense, interest expense, and other corporate expenses	$ 51,200	$ 48,200
Premium on redemption of preferred stock		$ 3,300