Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Cash flows from operating activities:
Net income	$ 3,442,000	$ 3,817,000
Adjustments to reconcile net income to cash provided by operating activities:
Unrealized (gain) loss on marketable securities	(169,000)	567,000
Deferred income taxes	(27,000)	(148,000)
Unrecognized tax benefits	139,000	155,000
Depreciation and amortization	542,000	622,000
Provision for credit losses	95,000	0
Changes in operating assets and liabilities:
Accounts receivable	(463,000)	(1,616,000)
Contract assets	7,117,000	1,418,000
Marketable securities	(1,120,000)	(773,000)
Inventories	254,000	4,094,000
Prepaid expenses and other current assets	(1,520,000)	527,000
Accounts payable	149,000	1,719,000
Customer deposits	2,133,000	2,389,000
Contract liabilities	0	2,157,000
Accrued expenses	545,000	(119,000)
Total adjustments	7,675,000	10,992,000
Cash provided by operating activities	11,117,000	14,809,000
Cash flows from investing activities:
Capital expenditures	(973,000)	(319,000)
Cash used in investing activities	(973,000)	(319,000)
Net increase in cash and cash equivalents	10,144,000	14,490,000
Cash and cash equivalents at:
Beginning of period	26,587,000	25,482,000
End of period	$ 36,731,000	$ 39,972,000