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Earnings (Loss) Per Share - Summary of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Numerator:        
Net income (loss) - numerator for basic earnings per share and diluted earnings per share - available to common stockholders $ 1,958 $ (777) $ 3,781 $ (1,002)
Denominator for basic earnings per share:        
Weighted-average shares 7,506 7,566 7,468 7,630
Denominator for diluted earnings per share:        
Adjusted weighted-average shares and assumed conversions 7,602 7,566 7,579 7,630
Basic (loss) earnings per share (in dollars per share) $ 0.26 $ (0.10) $ 0.51 $ (0.13)
Diluted (loss) earnings per share (in dollars per share) $ 0.26 $ (0.10) $ 0.50 $ (0.13)
Stock options        
Denominator for basic earnings per share:        
Effect of dilutive shares 89 0 90 0
Restricted stock        
Denominator for basic earnings per share:        
Effect of dilutive shares 7 0 21 0