INVESTMENT IN HOTEL PROPERTIES, NET - Pro forma financial information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Combinations [Abstract]
Revenues	$ 134,257	$ 134,071	$ 409,595	$ 398,502
Income from hotel operations	48,289	49,966	152,864	149,598
Net income	11,910	13,384	37,284	42,088
Net income (loss) attributable to common stockholders, net of amount allocated to participating securities	$ 8,101	$ 9,525	$ 25,839	$ 25,524
Basic net income (loss) per share attributable to common shareholders (in dollars per share)	$ 0.08	$ 0.09	$ 0.25	$ 0.25
Diluted net income (loss) per share attributable to common shareholders (in dollars per share)	$ 0.08	$ 0.09	$ 0.25	$ 0.25
Depreciation expense, property tax expense, interest expense, income tax expense, loss on impairment of assets and other corporate expenses	$ 46,300	$ 44,800	$ 144,100	$ 135,400
Premium on redemption of preferred stock				$ 3,300