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Share-Based Compensation (Details)
$ in Thousands
1 Months Ended 3 Months Ended
Jan. 31, 2017
employee
shares
Jan. 31, 2017
USD ($)
shares
Mar. 31, 2017
shares
Dec. 31, 2016
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement, vested and excluded from conversion or cancellation (in shares) 3,878      
Share-based compensation arrangement, number of employees that elected not to convert shares | employee 1      
Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement, non-option equity instrument, granted (in shares) 62,529      
Share-based compensation arrangement, vested, number (in shares)     51,039.000  
Share-based compensation arrangement, equity instruments other than options, nonvested, number (in shares)     11,490 0
Class B Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement, non-option equity instrument, granted (in shares)     9,838  
Share-based compensation arrangement, accelerated vesting, number of shares (in shares)   7,520,000    
Share-based compensation arrangement, accelerated compensation cost | $   $ 11,601    
Share-based compensation arrangement, forfeited (in shares) 17,669   17,669  
Share-based compensation arrangement, vested, number (in shares) 40,992 40,992    
Share-based compensation arrangement, outstanding, number (in shares)     0 49,553
IH6 | Class B Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement, non-option equity instrument, granted (in shares)   9,650    
IH1, IH2, IH3 | Class B Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement, non-option equity instrument, granted (in shares)   0    
Manager | Class B Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement, non-option equity instruments, nonvested, number (in shares)     0  
IH6 Bonus Awards | Class B Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement, non-option equity instrument, granted (in shares)   9,650    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Conversion Multiplier 0.5 0.5