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Share-Based Compensation - Stock Options (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Summary of Stock Option Activity (shares)      
Options, Granted (in shares) 0 0  
Employee Stock Option      
Summary of Stock Option Activity (shares)      
Options, Outstanding beginning balance (in shares) 527,000 730,000 310,000
Options, Granted (in shares) 0 0 461,000
Options, Exercised (in shares) (25,000) (155,000) (21,000)
Options, Forfeited (in shares) (1,000) (19,000) (20,000)
Options, Expired or canceled (in shares) (5,000) (29,000) 0
Options, Outstanding ending balance (in shares) 496,000 527,000 730,000
Weighted Average Exercise Price (dollars per share)      
Weighted average exercise price, Outstanding beginning balance (dollars per share) $ 5.12 $ 4.96 $ 6.35
Weighted average exercise price, Granted (dollars per share) 0 0 4.44
Weighted average exercise price, Exercised (dollars per share) 3.00 4.52 2.96
Weighted average exercise price, Forfeited (dollars per share) 20.09 4.58 16.26
Weighted average exercise price, Expired or canceled (dollars per share) 4.11 4.64 0
Weighted average exercise price, Outstanding ending balance (dollars per share) $ 5.23 $ 5.12 $ 4.96
Weighted Average Remaining Contractual Term      
Weighted average remaining contractual term, Outstanding 6 years 7 months 6 days    
Additional Disclosures      
Options, Exercisable (shares) 424,000    
Weighted average exercise price, Exercisable (dollars per share) $ 5.36    
Weighted average remaining contractual term, Exercisable 6 years 5 months 4 days    
Aggregate intrinsic value, Exercised $ 283 $ 1,328 $ 33
Aggregate intrinsic value, Outstanding ending balance 4,171    
Aggregate intrinsic value, Exercisable $ 3,515