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Share-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Aug. 15, 2017
Aug. 11, 2015
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Selling, General and Administrative Expenses            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Compensation cost related to stock options and RSUs recognized     $ 637 $ 583 $ 1,694 $ 1,443
Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options granted during the period (in shares)         10,000 124,000
Weighted average fair value of stock options granted (in dollars per share)         $ 2.19 $ 7.40
Stock options outstanding (in shares)     403,975   403,975  
Total unrecognized compensation cost related to non-vested stock option awards     $ 863   $ 863  
Equity incentive plan, weighted average recognition period         1 year 11 months 24 days  
RSUs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
RSUs granted during the period (in shares)         201,013 88,680
Weighted average fair value of restricted stock granted (in dollars per share)         $ 14.46 $ 25.42
RSUs outstanding (in shares)     308,648   308,648  
Equity incentive plan, weighted average recognition period         2 years 15 days  
Total unrecognized compensation cost related to non-vested RSUs     $ 2,959   $ 2,959  
RSUs | Board of Directors Chairman            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
RSUs granted during the period (in shares)   10,000        
Lump sum cash payment of RSUs converted $ 266          
2013 Equity Compensation Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Term of grant         10 years  
Shares available for grant (in shares)     582,180   582,180  
2013 Equity Compensation Plan | Service-Based Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting rate percentage         25.00%  
Award service period         1 year  
Third Anniversary | 2013 Equity Compensation Plan | Service-Based RSUs | Director            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting rate percentage         50.00%  
Fourth Anniversary | 2013 Equity Compensation Plan | Service-Based RSUs | Director            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting rate percentage         50.00%  
Vesting beginning of each year | 2013 Equity Compensation Plan | Service-Based RSUs | Director            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting rate percentage         25.00%