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Deferred Compensation Awards - Additional Information (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 8 Months Ended 9 Months Ended
May 20, 2016
$ / shares
Nov. 14, 2013
Jul. 01, 2013
Aug. 31, 2017
$ / shares
shares
May 31, 2016
shares
Sep. 30, 2018
USD ($)
shares
Sep. 30, 2017
USD ($)
shares
Mar. 31, 2018
shares
Sep. 30, 2018
USD ($)
shares
Sep. 30, 2017
USD ($)
shares
May 02, 2016
$ / $
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Foreign exchange rate translation | $ / $                     0.7969
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number           499,896 740,000   499,896 740,000  
Phantom Stock Units (PSUs)                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                 36 months    
Stock Appreciation Rights (SARs)                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Weighted average days used to determine exercise price   30 days 5 days                
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                 4 years    
PSUs and SARs                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Stock-based compensation expense | $           $ 694 $ 141   $ 1,056 $ 1,006  
2016 stock option grant                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Common stock, options granted (in shares)         325,000            
Options, exercise price per share (usd per share) | $ / shares $ 7.50                    
Expiration period                 3 years    
Fair value of the stock option expense | $                 $ 348    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                 2 years    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number           100,000 275,000   100,000 275,000  
2016 stock option grant | Employee Stock Option                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Stock-based compensation expense | $             $ 43   $ 68 $ 130  
Shares Exercised           225,000     225,000    
Stock Compensation Shares Exercised Utilizing Cashless Exercise           75,000     75,000    
Net Shares Outstanding After Cashless Exercise           15,826     15,826    
Treasury Stock, Shares, Acquired                 59,174    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number           100,000     100,000    
2016 stock option grant | Vest on May 2017                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting percentage                 50.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                 2 years    
2016 stock option grant | Vest on May 2018                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting percentage                 50.00%    
2017 stock option grant                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Common stock, options granted (in shares)       465,000              
Expiration period                 10 years    
Fair value of the stock option expense | $                 $ 1,100    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                 4 years    
Split-adjusted exercise price of options (usd per share) | $ / shares       $ 9.40              
2017 stock option grant | Employee Stock Option                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Stock-based compensation expense | $                 $ 67 $ 188  
Shares Exercised           4,204     4,204    
Options forfeited               56,300      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number           399,896     399,896    
2017 stock option grant | Vest on August 2018                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting percentage                 25.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                 4 years    
2017 stock option grant | Vest on August 2019                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting percentage                 25.00%    
2017 stock option grant | Vest on August 2020                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting percentage                 25.00%    
2017 stock option grant | Vest on August 2021                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting percentage                 25.00%