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Organization (Details)
 1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2014
USD ($)
Jun. 30, 2019
USD ($)
Hotel
Room
state
$ / shares
shares
Jun. 30, 2019
USD ($)
Hotel
Room
state
Jun. 30, 2018
USD ($)
Mar. 01, 2019
Feb. 28, 2019
Nov. 17, 2014
Jun. 09, 2014
Subsidiary, Sale of Stock [Line Items]                
Stock purchase plan, average price per share (in dollars per share) | $ / shares   $ 20.05            
Proceeds from issuance of common shares     $ 7,119,000 $ 10,681,000        
Percentage of common units of limited partnership owned     100.00%          
Aggregate number of rooms in hotels (in rooms) | Room   6,092 6,092          
Number of states in which hotels are owned (in states) | state   15 15          
Initial term of each TRS lease     5 years          
Island Hospitality Management Inc.                
Subsidiary, Sale of Stock [Line Items]                
Number of hotels managed by related party (in hotels) | Hotel   34 34          
Island Hospitality Management Inc.                
Subsidiary, Sale of Stock [Line Items]                
Number of hotels managed by related party (in hotels) | Hotel   40 40          
Ownership percentage in related party owned by the company's chairman   52.50% 52.50%   1.50% 51.00%    
NewINK Joint Venture                
Subsidiary, Sale of Stock [Line Items]                
Indirect ownership in the leased hotels   10.30% 10.30%         10.30%
Inland Joint Venture                
Subsidiary, Sale of Stock [Line Items]                
Aggregate number of rooms in hotels (in rooms) | Room   6,402 6,402          
Indirect ownership in the leased hotels             10.00%  
Noncontrolling Interest, Ownership Percentage by Parent   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 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          
Minority Interest In Joint Venture Rooms | Cerberus Capital Management                
Subsidiary, Sale of Stock [Line Items]                
Number of hotels managed by related party (in hotels) | Hotel   47 47          
Aggregate number of rooms in hotels (in rooms) | Room   6,098 6,098          
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   103,590            
Proceeds from issuance of common shares   $ 2,100,000            
Stock purchase plan, remaining authorized repurchase amount   $ 90,400,000 $ 90,400,000          
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   243,788            
Stock purchase plan, average price per share (in dollars per share) | $ / shares   $ 20.19            
Proceeds from issuance of common shares   $ 4,900,000            
Stock purchase plan, remaining authorized repurchase amount   $ 28,000,000.0 $ 28,000,000.0