UNAUDITED CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive loss [Member]	Total
Beginning Balance (in Shares) at Sep. 30, 2017	3,935
Beginning Balance at Sep. 30, 2017	$ 40	$ 13,717	$ 17,407	$ (10,163)	$ 21,001
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)			(1,791)		(1,791)
Other comprehensive loss				(415)	(415)
Exercise of stock options (in shares)	5
Exercise of stock options		22			22
Stock-based compensation		489			489
Restricted stock cancellation (in shares)	(13)
Restricted stock issuance (in shares)	71
Restricted stock issuance	$ 1				1
Issuance of shares under employee stock purchase plan (in shares)	8
Issuance of shares under employee stock purchase plan		78			78
Cash dividends paid on common stock			(1,319)		(1,319)
Ending Balance (in Shares) at Jun. 30, 2018	4,006
Ending Balance at Jun. 30, 2018	$ 41	14,306	14,297	(10,578)	18,066
Beginning Balance (in Shares) at Mar. 31, 2018	4,006
Beginning Balance at Mar. 31, 2018	$ 41	14,116	14,735	(10,253)	18,639
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)			3		3
Other comprehensive loss				(325)	(325)
Stock-based compensation		190			190
Cash dividends paid on common stock			(441)		(441)
Ending Balance (in Shares) at Jun. 30, 2018	4,006
Ending Balance at Jun. 30, 2018	$ 41	14,306	14,297	(10,578)	$ 18,066
Beginning Balance (in Shares) at Sep. 30, 2018	4,017				4,017
Beginning Balance at Sep. 30, 2018	$ 40	14,661	29,926	(10,825)	$ 33,802
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)			(37)		(37)
Other comprehensive loss				(218)	(218)
Exercise of stock options (in shares)	1
Exercise of stock options	$ 1	3			4
Stock-based compensation		586			586
Restricted stock cancellation (in shares)	(3)
Restricted stock issuance (in shares)	108
Restricted stock issuance	$ 1				1
Issuance of shares under employee stock purchase plan (in shares)	13
Issuance of shares under employee stock purchase plan		117			117
Cash dividends paid on common stock			(1,844)		$ (1,844)
Ending Balance (in Shares) at Jun. 30, 2019	4,136				4,136
Ending Balance at Jun. 30, 2019	$ 42	15,367	28,203	(11,043)	$ 32,569
Beginning Balance (in Shares) at Mar. 31, 2019	4,137
Beginning Balance at Mar. 31, 2019	$ 42	15,165	28,291	(10,823)	32,675
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)			532		532
Other comprehensive loss				(220)	(220)
Stock-based compensation		202			202
Restricted stock cancellation (in shares)	(3)
Restricted stock issuance (in shares)	2
Cash dividends paid on common stock			(620)		$ (620)
Ending Balance (in Shares) at Jun. 30, 2019	4,136				4,136
Ending Balance at Jun. 30, 2019	$ 42	$ 15,367	28,203	$ (11,043)	$ 32,569
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of ASU 2014-09 (see note 11)			$ 158		$ 158