XML 61 R50.htm IDEA: XBRL DOCUMENT v3.19.1
Stock-Based Compensation - Additional Information (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Feb. 28, 2017
Mar. 31, 2019
Mar. 31, 2018
Sep. 30, 2018
Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards vesting periods       3 years
Stock-based compensation expenses   $ 0.7 $ 0.3  
Stock-based compensation liability   1.0    
Unrecognized compensation expense   $ 5.6    
Unrecognized stock-based compensation cost, recognition period   2 years 4 months 20 days    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value   $ 0.9 1.1  
Stock Appreciation Rights (SARs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expenses   0.2 $ 0.1  
Stock-based compensation liability   0.8    
Unrecognized compensation expense   $ 0.6    
Unrecognized stock-based compensation cost, recognition period   1 year 7 months 18 days    
Share-based compensation expiration period 5 years