CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated other comprehensive loss	Total
Beginning Balance (in Shares) at Sep. 30, 2017	3,935,000
Beginning Balance at Sep. 30, 2017	$ 40	$ 13,717	$ 17,407	$ (10,163)	$ 21,001
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income			14,440		14,440
Other comprehensive loss				(662)	(662)
Exercise of stock options		22			$ 22
Exercise of stock options (in shares)	5,000				4,626
Stock-based compensation		691			$ 691
Restricted stock issuance (in shares)	54,000
Issuance of shares under employee stock purchase plan		231			$ 231
Issuance of shares under employee stock purchase plan (in shares)	23,000				22,895
Cash dividends paid on common stock			(1,921)		$ (1,921)
Ending Balance (in Shares) at Sep. 30, 2018	4,017,000				4,017,000
Ending Balance at Sep. 30, 2018	$ 40	14,661	29,926	(10,825)	$ 33,802
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of ASU 2014-09 (see note 1)			158		158
Net (loss) income			(371)		(371)
Other comprehensive loss				(1,768)	(1,768)
Exercise of stock options		3			$ 3
Exercise of stock options (in shares)	1,000				1,000
Stock-based compensation		792			$ 792
Restricted stock cancellation (in shares)	(3,000)
Restricted stock issuance	$ 1				1
Restricted stock issuance (in shares)	108,000
Issuance of shares under employee stock purchase plan	$ 1	277			$ 278
Issuance of shares under employee stock purchase plan (in shares)	31,000				29,238
Cash dividends paid on common stock			(2,467)		$ (2,467)
Ending Balance (in Shares) at Sep. 30, 2019	4,154,000				4,154,000
Ending Balance at Sep. 30, 2019	$ 42	$ 15,733	$ 27,246	$ (12,593)	$ 30,428