CONSOLIDATED STATEMENT OF SHAREHOLDERS EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated other comprehensive loss	Total
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of ASU 2014-09 | Accounting Standards Update 2014-09			$ 158		$ 158
Beginning Balance (in Shares) at Sep. 30, 2018	4,017,000
Beginning Balance at Sep. 30, 2018	$ 40	$ 14,661	29,926	$ (10,825)	33,802
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss			(371)		(371)
Other comprehensive income (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
Purchase of common stock (in shares)					0
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss			(1,446)		(1,446)
Other comprehensive income (loss)				598	598
Exercise of stock options		2			$ 2
Exercise of stock options (in shares)					500
Stock-based compensation		982			$ 982
Restricted stock issuance	$ 1				1
Restricted stock issuance (in shares)	97,000
Issuance of shares under employee stock purchase plan		277			$ 277
Issuance of shares under employee stock purchase plan (in shares)	32,000				32,222
Purchase of common stock			(46)		$ (46)
Purchase of common stock (in shares)	(7,000)				(6,400)
Cash dividends paid on common stock			(1,262)		$ (1,262)
Ending Balance (in Shares) at Sep. 30, 2020	4,276,000				4,276,000
Ending Balance at Sep. 30, 2020	$ 43	$ 16,994	$ 24,492	$ (11,995)	$ 29,534