Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2019	Mar. 31, 2019
Stock Appreciation Rights (SARs) [Member] | Scenario, Forecast [Member]
Loss Contingencies [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	79,482
Minimum [Member]
Loss Contingencies [Line Items]
Terminated Employees Severance Compensation Period		6 months
Maximum [Member]
Loss Contingencies [Line Items]
Terminated Employees Severance Compensation Period		12 months
Contingent Liability for Employee Severance Payments		$ 1,062