EQUITY - Additional Information (Details) $ / shares in Units, $ in Thousands							1 Months Ended	2 Months Ended	12 Months Ended
	Oct. 26, 2022 USD ($) a units	May 09, 2022 USD ($)	Jan. 13, 2022 $ / shares shares	Sep. 04, 2021 USD ($) $ / shares shares	Aug. 12, 2021 USD ($) shares	May 01, 2021	Oct. 31, 2022 USD ($)	Mar. 23, 2022 shares	Dec. 31, 2022 USD ($) room state hotel vote $ / shares Rate shares	Dec. 31, 2021 USD ($) room $ / shares shares	Dec. 31, 2020 USD ($)	Jun. 30, 2022
Class of Stock [Line Items]
Common stock, shares authorized (in shares)									500,000,000	500,000,000
Common stock, par value (in dollars per share) | $ / shares									$ 0.01	$ 0.01
Number of votes a share of outstanding common stock is entitled | vote									1
Shares reserved for issuance (in shares)									51,650,000	15,864,515
Preferred stock, shares authorized (in shares)									100,000,000	100,000,000
Preferred stock, par value (in dollars per share) | $ / shares									$ 0.01	$ 0.01
Proceeds from equity offerings, net of issuance costs | $									$ 0	$ 96,617	$ 0
Premium on redemption of preferred stock | $									$ 0	$ 2,710	$ 0
Number of Joint Ventures Entered Into | room									3
Number of hotels | room									3,984	230
Number of states in which hotel properties are located | state									24
Redeemable common unit, conversion ratio | Rate									100.00%
Onera Joint Venture
Class of Stock [Line Items]
Number of guestrooms | units	11
Percentage of equity interest in a joint venture (as percent)							90.00%
Area of land acquired (in acre) | a	6.4
Cash payments to acquire businesses | $							$ 5,200
Joint venture, fee simple interest (as percent)	100.00%
Hotels
Class of Stock [Line Items]
Number of hotels | hotel									103
Number of guestrooms | room									15,334
Hotels | Brickell Joint Venture
Class of Stock [Line Items]
Number of hotels | hotel									2
Hotels | Portfolio Purchase Through Contribution And Purchase Agreement
Class of Stock [Line Items]
Number of hotels | hotel									2
AC/Element Hotel [Member] | Brickell Joint Venture
Class of Stock [Line Items]
Initial purchase option, ownership percentage												90.00%
Operating partnership | Non-Controlling Interests
Class of Stock [Line Items]
Limited partner, ownership percentage									13.00%	13.00%
Joint Venture with GIC | Joint Venture with GIC
Class of Stock [Line Items]
General partner, ownership interest (as percent)									51.00%
Incentive fee earned | $									$ 800
GIC | Joint Venture with GIC | Joint Venture with GIC
Class of Stock [Line Items]
Limited partner, ownership percentage									49.00%
GIC | Joint Venture with GIC | Hotels
Class of Stock [Line Items]
Limited partner, ownership percentage						49.00%
Joint Venture with GIC | Hotels | Joint Venture with GIC
Class of Stock [Line Items]
Number of guestrooms | room									5,414
Number of states in which hotel properties are located | state									9
Brickell Joint Venture | Brickell Joint Venture
Class of Stock [Line Items]
Initial purchase option, ownership percentage												10.00%
Undesignated preferred stock
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)									89,600,000
6.25% Series E Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)									6,400,000
Preferred stock, dividend rate									6.25%	6.25%
Beginning preferred shares outstanding (in shares)									6,400,000	6,400,000
Preferred stock, redemption price (in dollars per share) | $ / shares									$ 25
Annual dividend rate per share (in dollars per share) | $ / shares									$ 1.5625
5.875% Series F Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)									4,000,000
Preferred stock, dividend rate									5.875%
Number of common stock sold (in shares)					4,000,000
Proceeds from equity offerings, net of issuance costs | $					$ 96,600
Underwriting discount and offering related expense | $					$ 3,400
Beginning preferred shares outstanding (in shares)									4,000,000
Preferred stock, redemption price (in dollars per share) | $ / shares									$ 25
Annual dividend rate per share (in dollars per share) | $ / shares									$ 1.46875
6.45% Series D Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate				6.45%
Preferred stock, redemption amount | $				$ 75,000
Beginning preferred shares outstanding (in shares)				3,000,000
Preferred stock, redemption price (in dollars per share) | $ / shares				$ 25
Premium on redemption of preferred stock | $				$ 2,700
Operating Partnership Units | Summit Hotel OP, LP | Hotels | Portfolio Purchase Through Contribution And Purchase Agreement
Class of Stock [Line Items]
Number of shares issued in asset acquisition (in shares)								15,864,674
Series Z Preferred Units
Class of Stock [Line Items]
Preferred stock, dividend rate			5.25%
Preferred stock, redemption price (in dollars per share) | $ / shares			$ 25
Preferred stock, redemption term, period			90 days
Series Z Preferred Units | Summit Hotel OP, LP
Class of Stock [Line Items]
Preferred stock, dividend rate			5.25%
Series Z Preferred Units | Summit Hotel OP, LP | Hotels | Portfolio Purchase Through Contribution And Purchase Agreement
Class of Stock [Line Items]
Number of shares issued in asset acquisition (in shares)			2,000,000
Temporary equity, shares issued (in shares)									2,000,000
Unaffiliated Third Parties | Summit Hotel OP, LP
Class of Stock [Line Items]
Limited partner, ownership percentage									1.00%	1.00%
Unaffiliated Third Parties | Operating partnership
Class of Stock [Line Items]
Limited partner capital account units conversion ratio									1
Number of common units of operating partnership owned by unaffiliated third parties (in shares)									15,976,807	124,797
Maximum | Onera Joint Venture
Class of Stock [Line Items]
Contingent consideration, liability | $	$ 1,800
Maximum | 6.25% Series E Preferred Stock
Class of Stock [Line Items]
Ratio for conversion									3.1686
Maximum | 5.875% Series F Preferred Stock
Class of Stock [Line Items]
Ratio for conversion									5.8275
2022 ATM Program | Maximum
Class of Stock [Line Items]
Sale of stock aggregate offering price | $		$ 200,000