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Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Jan. 12, 2018
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation   $ 760 $ 195 $ 2,511 $ 566
Remaining requisite service period       22 months  
Unearned compensation   1,245   $ 1,245  
Method for measuring cost of award       The estimated fair value and derived service period for the stock options were calculated using a Monte Carlo simulation.  
Performance Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unearned compensation related to options   1,390   $ 1,390  
Remaining service period       13 months  
Time-Vested Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unearned compensation related to options   $ 499   $ 499  
Remaining service period       27 months  
Executive Officer [Member] | Employee Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award contractual term 10 years        
Options granted 146,590        
Expected volatility 49.33%        
Expected dividend yield 0.00%        
Risk-free rate 2.55%        
Executive Officer [Member] | Employee Stock Option [Member] | Share-based Compensation Award, Tranche One [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage 34.00%        
Threshold Stock Price $ 5.00        
Executive Officer [Member] | Employee Stock Option [Member] | Share-based Compensation Award, Tranche Two [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage 33.00%        
Threshold Stock Price $ 10.00        
Executive Officer [Member] | Employee Stock Option [Member] | Share-based Compensation Award, Tranche Three [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage 33.00%        
Threshold Stock Price $ 15.00        
Executive Officer [Member] | Minimum [Member] | Employee Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Derived service period 1 year        
Estimated fair value $ 8.51        
Executive Officer [Member] | Maximum [Member] | Employee Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Derived service period 2 years 5 months 5 days        
Estimated fair value $ 9.12