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Fair Value Measurements (Details 1) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Business Combination Contingent Consideration Liability [Roll Forward]        
Acquisition-related accrued interest $ (290) $ (459) $ (795) $ (1,314)
Fair values | Level 3        
Business Combination Contingent Consideration Liability [Roll Forward]        
Balance, June 30, 2017     (7,644)  
Acquisition-related accrued interest     (795)  
Payment     70  
Balance, March 31, 2018 $ (8,369)   $ (8,369)