INVESTMENT IN HOTEL PROPERTIES, NET - Summary of hotel properties acquired (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
2016 acquisitions
Business Acquisition [Line Items]
Purchase Price	$ 170,400
Net assets acquired	169,654
Settlement amount of net liabilities	700
2015 acquisitions
Business Acquisition [Line Items]
Purchase Price		$ 154,751
Net assets acquired		155,064
Settlement amount of net working capital assets		300
Courtyard by Marriott | Nashville, TN | 2016 acquisitions
Business Acquisition [Line Items]
Purchase Price	71,000
Residence Inn | Atlanta, GA | 2016 acquisitions
Business Acquisition [Line Items]
Purchase Price	38,000
Marriott | Boulder, CO | 2016 acquisitions
Business Acquisition [Line Items]
Purchase Price	$ 61,400
Hampton Inn & Suites | Minneapolis, MN | 2015 acquisitions
Business Acquisition [Line Items]
Purchase Price		38,951
Hampton Inn | Boston (Norwood), MA | 2015 acquisitions
Business Acquisition [Line Items]
Purchase Price		24,000
Hotel Indigo | Asheville, NC | 2015 acquisitions
Business Acquisition [Line Items]
Purchase Price		35,000
Residence Inn by Marriott | Branchburg, NJ | 2015 acquisitions
Business Acquisition [Line Items]
Purchase Price		25,700
Residence Inn by Marriott | Hunt Valley, MD | 2015 acquisitions
Business Acquisition [Line Items]
Purchase Price		$ 31,100