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Income Taxes - Additional Information (Details) - USD ($)		3 Months Ended		12 Months Ended
	Dec. 22, 2017	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2018
Income Taxes
Deferred Tax Liabilities, Tax Deferred Income		$ 1,800,000
Taxes Payable		$ 442,000
Deferred Income Tax Liability Payable period		8 years
Unrecognized Tax Benefits, Interest on Income Taxes Accrued		$ 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	21.00%
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount				$ 381,000
Unrecognized Tax Benefits, Period Increase (Decrease)		$ 45,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		171,000
Income Tax Expense (Benefit)		$ 369,000	$ 248,000

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