SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)
Total revenues	$ 110,039	$ 125,091	$ 120,677	$ 107,648	$ 99,141	$ 109,256	$ 105,525	$ 89,544	$ 463,455	$ 403,466	$ 298,958
Income from continuing operations	84,758	13,606	16,301	10,591	4,517	3,766	9,201	2,947	125,256	20,431	6,625
Income (loss) from discontinued operations					214	(59)	(41)	378		492	(728)
Net income	84,758	13,606	16,301	10,591	4,731	3,707	9,160	3,325	125,256	20,923	5,897
Net income attributable to Summit Hotel Properties, Inc.	$ 84,159	$ 13,540	$ 16,204	$ 10,534	$ 4,725	$ 3,713	$ 8,975	$ 3,458	$ 124,437	$ 20,871	$ 5,878
Earnings (loss) per share - Basic:
Net income per share from continuing operations (in dollars per share)	$ 0.93	$ 0.11	$ 0.14	$ 0.07					$ 1.25	$ 0.04	$ (0.11)
Net income per share from discontinued operations (in dollars per share)										0.01	(0.01)
Net income per share (in dollars per share)	0.93	0.11	0.14	0.07					1.25	0.05	(0.12)
Earnings (loss) per share - Diluted
Net income per share from continuing operations (in dollars per share)	0.92	0.11	0.14	0.07					1.24	0.04	(0.11)
Net income per share from discontinued operations (in dollars per share)										0.01	(0.01)
Net income per share (in dollars per share)	$ 0.92	$ 0.11	$ 0.14	$ 0.07					$ 1.24	$ 0.05	$ (0.12)
Earnings per share - Basic and diluted:
Basic and diluted net income (loss) per share from continuing operations (in dollars per share)					$ 0.01	$ (0.01)	$ 0.06	$ (0.01)
Basic and diluted net income (loss) per share (in dollars per share)					$ 0.01	$ (0.01)	$ 0.06	$ (0.01)