CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings
Beginning Balance (in shares) at Sep. 30, 2023		13,950
Beginning balance at Sep. 30, 2023	$ 102,439	$ 14	$ 99,974	$ 2,451
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Expense related to director restricted stock units	439		439
Expense related to employee stock-based compensation	1,851		1,851
Exercise of stock options (in shares)		535
Exercise of stock options	261		261
Common stock surrendered for the exercise of stock options (in shares)		(302)
Common stock surrendered for the exercise of stock options	(1,487)		(1,487)
Net income	5,102			5,102
Ending Balance (in shares) at Jun. 30, 2024		14,183
Ending balance at Jun. 30, 2024	108,605	$ 14	101,038	7,553
Beginning Balance (in shares) at Mar. 31, 2024		14,230
Beginning balance at Mar. 31, 2024	106,750	$ 14	100,322	6,414
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Expense related to director restricted stock units	180		180
Expense related to employee stock-based compensation	537		537
Common stock surrendered for the exercise of stock options (in shares)		(47)
Common stock surrendered for the exercise of stock options	(1)		(1)
Net income	1,139			1,139
Ending Balance (in shares) at Jun. 30, 2024		14,183
Ending balance at Jun. 30, 2024	$ 108,605	$ 14	101,038	7,553
Beginning Balance (in shares) at Sep. 30, 2024	14,386	14,386
Beginning balance at Sep. 30, 2024	$ 110,132	$ 14	100,270	9,848
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Expense related to director restricted stock units	464		464
Expense related to employee stock-based compensation	$ 821		821
Exercise of stock options (in shares)	0
Net income	$ 2,281			2,281
Ending Balance (in shares) at Jun. 30, 2025	14,386	14,386
Ending balance at Jun. 30, 2025	$ 113,698	$ 14	101,555	12,129
Beginning Balance (in shares) at Mar. 31, 2025		14,386
Beginning balance at Mar. 31, 2025	112,849	$ 14	100,995	11,840
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Expense related to director restricted stock units	155		155
Expense related to employee stock-based compensation	405		405
Net income	$ 289			289
Ending Balance (in shares) at Jun. 30, 2025	14,386	14,386
Ending balance at Jun. 30, 2025	$ 113,698	$ 14	$ 101,555	$ 12,129