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Organization - Additional Information (Details)
 1 Months Ended 3 Months Ended
Jan. 31, 2014
USD ($)
Mar. 31, 2018
USD ($)
Hotel
Room
state
$ / shares
shares
Mar. 31, 2017
USD ($)
Dec. 31, 2014
Hotel
Room
Nov. 17, 2014
Jun. 30, 2014
Hotel
Room
Jun. 09, 2014
Subsidiary, Sale of Stock [Line Items]              
Proceeds from issuance of common shares   $ 10,537,000 $ 134,000        
Percentage of common units of limited partnership owned   100.00%          
Number of hotels in ownership by Company (in hotels) | Hotel   40          
Aggregate number of rooms in hotels (in rooms) | Room   6,020          
Number of states in which hotels are owned (in states) | state   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%
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%  
Number of hotels acquired (in hotels) | Hotel   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          
Inland Joint Venture | Marriott International, Inc.              
Subsidiary, Sale of Stock [Line Items]              
Number of hotels managed by related party (in hotels) | Hotel   14          
Island Hospitality Management Inc.              
Subsidiary, Sale of Stock [Line Items]              
Number of hotels managed by related party (in hotels) | Hotel   40          
Ownership percentage in related party owned by the company's chairman   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          
ATM Plan              
Subsidiary, Sale of Stock [Line Items]              
Stock purchase plan, authorized amount $ 50,000,000            
Registration statement filed, amount 100,000,000            
Shares issued (in shares) | shares   0          
Stock purchase plan, average price per share (in dollars per share) | $ / shares   $ 21.87          
Stock purchase plan, remaining authorized repurchase amount   $ 100,000,000          
Total number of shares issued (in shares) | shares   2,147,695          
DRSP Plan              
Subsidiary, Sale of Stock [Line Items]              
Stock purchase plan, authorized amount 25,000,000            
Registration statement filed, amount $ 50,000,000            
Shares issued (in shares) | shares   466,497          
Stock purchase plan, average price per share (in dollars per share) | $ / shares   $ 21.62          
Stock purchase plan, remaining authorized repurchase amount   $ 39,500,000          
Weighted average price (in dollars per share) | $ / shares   $ 22.60          
Proceeds from issuance of common shares   $ 10,500,000          
Total number of shares issued (in shares) | shares   1,207,969