INVESTMENT IN HOTEL PROPERTIES, NET - Summary of hotel properties acquired (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Business Acquisition [Line Items]
Purchase Price	$ 364,450	$ 109,000
Net assets acquired	367,386	109,182
Settlement amount of net working capital assets	800	200
Other assets and capitalized transaction costs	2,100
Other assets and capitalized transaction costs, accrued and unpaid	200
Homewood Suites | Aliso Viejo (Laguna Beach), CA
Business Acquisition [Line Items]
Purchase Price	38,000
Hyatt Place | Phoenix (Mesa), AZ
Business Acquisition [Line Items]
Purchase Price	22,200
Courtyard by Marriott | Fort Lauderdale, FL
Business Acquisition [Line Items]
Purchase Price	85,000
Courtyard by Marriott | Charlotte, NC
Business Acquisition [Line Items]
Purchase Price	56,250
Courtyard by Marriott | Fort Worth, TX
Business Acquisition [Line Items]
Purchase Price	40,000
Courtyard by Marriott | Kansas City, MO
Business Acquisition [Line Items]
Purchase Price	24,500
Courtyard by Marriott | Pittsburgh, PA
Business Acquisition [Line Items]
Purchase Price	42,000
Courtyard by Marriott | Nashville, TN
Business Acquisition [Line Items]
Purchase Price		71,000
Hampton Inn & Suites | Baltimore, MD
Business Acquisition [Line Items]
Purchase Price	18,000
Residence Inn by Marriott | Baltimore, MD
Business Acquisition [Line Items]
Purchase Price	$ 38,500
Residence Inn by Marriott | Atlanta, GA
Business Acquisition [Line Items]
Purchase Price		$ 38,000