Organization - Additional Information (Details)	1 Months Ended		3 Months Ended	9 Months Ended
	Jan. 31, 2017 USD ($)	Jan. 31, 2014 USD ($)	Sep. 30, 2017 USD ($) Hotel Room state $ / shares shares	Sep. 30, 2017 USD ($) Hotel Room state $ / shares shares	Sep. 30, 2016 USD ($)	Nov. 17, 2014	Jun. 30, 2014 Hotel Room	Jun. 09, 2014
Subsidiary, Sale of Stock [Line Items]
Proceeds from issuance of common shares				$ 29,736,000	$ 344,000
Issuance of shares, value				$ 28,924,000	$ 337,000
Percentage of common units of limited partnership owned				100.00%
Number of hotels in ownership by Company (in hotels) | Hotel			39	39
Aggregate number of rooms in hotels (in rooms) | Room			5,843	5,843
Number of states in which hotels are owned (in states) | state			15	15
Initial term of each TRS lease (in years)				5 years
NewINK Joint Venture
Subsidiary, Sale of Stock [Line Items]
Indirect ownership in the leased hotels (in percentage)			10.30%	10.30%				10.30%
Inland Joint Venture
Subsidiary, Sale of Stock [Line Items]
Aggregate number of rooms in hotels (in rooms) | Room							6,401
Indirect ownership in the leased hotels (in percentage)			10.00%	10.00%		10.00%	10.00%
Number of hotels acquired (in hotels) | Hotel			48	48			48
Inland Joint Venture | Island Hospitality Management Inc.
Subsidiary, Sale of Stock [Line Items]
Number of hotels managed by related party (in hotels) | Hotel			34	34
Inland Joint Venture | Marriott International, Inc.
Subsidiary, Sale of Stock [Line Items]
Number of hotels managed by related party (in hotels) | Hotel			14	14
Island Hospitality Management Inc.
Subsidiary, Sale of Stock [Line Items]
Number of hotels managed by related party (in hotels) | Hotel			39	39
Ownership percentage in related party owned by the company's chairman			51.00%	51.00%
Minority Interest In Joint Venture Rooms | Cerberus Capital Management
Subsidiary, Sale of Stock [Line Items]
Aggregate number of rooms in hotels (in rooms) | Room							6,097
Number of hotels managed by related party (in hotels) | Hotel							47
Indirectly Owned Interest In Joint Venture Hotels
Subsidiary, Sale of Stock [Line Items]
Number of hotels in ownership by Company (in hotels) | Hotel			47	47
ATM Plan
Subsidiary, Sale of Stock [Line Items]
Stock purchase plan, authorized amount		$ 50,000,000
Shares issued (in shares) | shares			464,454	1,993,199
weighted average price (in dollars per share) | $ / shares			$ 20.91	$ 20.91
Proceeds from issuance of common shares			$ 9,600,000
Stock purchase plan, average price per share (in dollars per share) | $ / shares				$ 21.92
Stock purchase plan, remaining authorized repurchase amount			$ 6,300,000	$ 6,300,000
DRSP Plan
Subsidiary, Sale of Stock [Line Items]
Stock purchase plan, authorized amount		$ 25,000,000
Shares issued (in shares) | shares			149,305	360,436
weighted average price (in dollars per share) | $ / shares			$ 20.92	$ 20.92
Proceeds from issuance of common shares			$ 3,100,000
Stock purchase plan, average price per share (in dollars per share) | $ / shares				$ 20.54
Stock purchase plan, remaining authorized repurchase amount			$ 17,600,000	$ 17,600,000
Issuance of shares, value	$ 25,000,000