Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock Outstanding [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock, Common [Member]	Total
Balance (in shares) at Sep. 30, 2022	13,021,241
Balance at Sep. 30, 2022		$ 139	$ 94,667	$ 49,654	$ (15,313)	$ (7,500)	$ 121,647
Net income (loss)		0	0	12,206	0	0	12,206
Other comprehensive income (loss)		0	0	0	(2,511)	0	(2,511)
Issuance of common stock pursuant to the vesting of restricted stock units (in shares)	167,248
Issuance of common stock pursuant to the vesting of restricted stock units		1	(1)	0	0	0	0
Stock-based compensation		0	1,374	0	0	0	1,374
Balance (in shares) at Sep. 30, 2023	13,188,489
Balance at Sep. 30, 2023		140	96,040	61,860	(17,824)	(7,500)	132,716
Net income (loss)		0	0	(6,578)	0	0	(6,578)
Other comprehensive income (loss)		0	0	0	13,567	0	13,567
Issuance of common stock pursuant to the vesting of restricted stock units (in shares)	175,601
Issuance of common stock pursuant to the vesting of restricted stock units		2	(2)	0	0	0	0
Stock-based compensation		0	1,304	0	0	0	1,304
Purchase of treasury stock (in shares)	(654,709)
Purchase of treasury stock		0	0	0	0	(6,385)	(6,385)
Balance (in shares) at Sep. 30, 2024	12,709,381
Balance at Sep. 30, 2024		$ 142	$ 97,342	$ 55,282	$ (4,257)	$ (13,885)	$ 134,624