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Selected Consolidated Financial Statement Information - Other Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Jun. 30, 2018
Other Liabilities    
Deferred grant incentive $ 457 $ 460
Deferred compensation 403 395
Legal settlement 0 467
Other non-current liabilities 43 90
Other liabilities $ 903 $ 1,412