Note 8 - Leases (Tables)

9 Months Ended

Jun. 30, 2023

Notes Tables

Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]

For fiscal years ending September 30,
2023 (remainder)	$	74
2024		278
2025		186
2026		130
2027		134
2028		91
Future minimum lease payments		893
Less interest		(57	)
Present value of minimum lease payments		836
Less current portion		(253	)
Non-current portion	$	583

Lease, Cost [Table Text Block]

	Three Months Ended				Nine Months Ended
	June 30, 2023		June 30, 2022		June 30, 2023		June 30, 2022
Right-of-use operating lease costs	$	68	$	68	$	204	$	204
Short-term lease costs		36		52		168		148
Total	$	104	$	120	$	372	$	352

Summary of Other Information Related to Lease Liabilities [Table Text Block]

	Nine Months Ended
	June 30, 2023			June 30, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	196		$	190
Weighted average remaining lease term (in years)		4.1			4.9
Weighted average discount rate		3.25	%		3.25	%

Property, Plant, and Equipment, Lessor Asset under Operating Lease [Table Text Block]

	June 30, 2023			September 30, 2022
Rental equipment, primarily wireless recording equipment	$	80,819		$	83,887
Accumulated depreciation and impairment		(62,438	)		(55,688	)
	$	18,381		$	28,199

Lessor, Operating Lease, Payment to be Received, Maturity [Table Text Block]

For fiscal years ending September 30,
2023 (remainder)	$	31
2024		128
2025		131
2026		132
2027		11
	$	433