Significant Accounting Policies and Business - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended				9 Months Ended
	Feb. 13, 2011	Sep. 30, 2012 Property	Jun. 30, 2012 Property	Mar. 31, 2012	Sep. 30, 2011	Sep. 30, 2012 Property	Sep. 30, 2011	Dec. 31, 2011
Significant Accounting Policies [Line Items]
Membership interest issued and converted into, and canceled in exchange to common units of limited partnership	9,993,992
Contributed net proceeds of IPO and concurrent private placement to Operating Partnership in exchange for Common Units	27,274,000
Number of properties owned		73				73
Mortgages and notes payable		$ 312,250,257				$ 312,250,257		$ 217,103,728
Depreciation of real property		7,780,890			7,097,918	22,794,069	19,582,596
Amortization of deferred financing costs		572,852			1,153,043	1,795,545	1,770,368
Amortization of franchise fees		150,099			140,954	571,848	716,990
Number of hotels disposed			3
Proceed from disposal of hotels		1,900,000	16,500,000
Loss on impairment of assets			1,166,000	932,000		2,098,000
REIT taxable income distributed to stockholders		100.00%				100.00%
Minimum
Significant Accounting Policies [Line Items]
Minimum REIT taxable income distributed to stockholders		90.00%				90.00%
Building | Minimum
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment						27 years
Building | Maximum
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment						40 years
Furniture and Fixtures | Minimum
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment						2 years
Furniture and Fixtures | Maximum
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment						15 years
SUMMIT HOTEL OP, LP
Significant Accounting Policies [Line Items]
Number of properties owned		65				65
Mortgages and notes payable		312,250,257				312,250,257		217,103,728
Trs Lessees
Significant Accounting Policies [Line Items]
Outstanding equity ownership interest		100.00%				100.00%
Guest Rooms
Significant Accounting Policies [Line Items]
Number of properties owned		7,533				7,533
Number of states		20				20
Fair Value, Inputs, Level 2
Significant Accounting Policies [Line Items]
Fair value of mortgage and notes payable		$ 313,000,000				$ 313,000,000
Common Class B
Significant Accounting Policies [Line Items]
Membership interest issued and converted into, and canceled in exchange to common units of limited partnership	74,829
Percentage of membership interest contributed	36.00%
Common Class C | Non Affiliated Entity
Significant Accounting Policies [Line Items]
Membership interest issued and converted into, and canceled in exchange to common units of limited partnership	31,179
Percentage of membership interest contributed	15.00%
IPO
Significant Accounting Policies [Line Items]
New issued stock (in shares)	26,000,000
Private Placement
Significant Accounting Policies [Line Items]
New issued stock (in shares)	1,274,000