Stock Based Compensation - Stock compensation expenses (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Stock Based Compensation [Line Items]
Stock Compensation Expense	$ 90,000	$ 120,000	$ 279,000	$ 351,000
Common Stock [Member]
Stock Based Compensation [Line Items]
Stock Compensation Expense	73,000	78,000	215,000	209,000
Restricted stock [Member]
Stock Based Compensation [Line Items]
Stock Compensation Expense	6,000	14,000	29,000	40,000
Equity Option [Member]
Stock Based Compensation [Line Items]
Stock Compensation Expense	0	0	0	17,000
Employee stock purchase plan [Member]
Stock Based Compensation [Line Items]
Stock Compensation Expense	1,000	1,000	3,000	2,000
Subsidiary option grants [Member]
Stock Based Compensation [Line Items]
Stock Compensation Expense	$ 10,000	$ 27,000	$ 32,000	$ 83,000