Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating Activities:
Net income	$ 704	$ 11,874
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,597	800
Amortization of debt issuance costs	11	0
Provision for doubtful accounts	0	4
Warranty provision	54	16
Inventory obsolescence	379	407
Stock-based compensation	1,424	980
Realized loss on foreign currency forward contract	(76)	0
Unrealized (loss) gain on foreign currency forward contract	0	76
Deferred income taxes	433	(5,708)
Amortization of operating lease right of use asset	694	599
Accretion of acquisition holdback liability	46	0
Changes in operating assets and liabilities:
Accounts receivable, net	(2,138)	(1,775)
Inventories, net	(846)	(521)
Prepaid expenses and other	(1,634)	927
Accounts payable	600	477
Accrued and other liabilities	4,902	(1,238)
Net cash provided by operating activities	6,150	6,918
Investing Activities:
Purchases of marketable securities	(5,144)	(8,056)
Proceeds from maturities of marketable securities	5,646	5,061
Cash paid for acquisitions net of cash acquired	(15,848)	0
Capital expenditures	(208)	(140)
Net cash used in investing activities	(15,554)	(3,135)
Financing Activities:
Proceeds from exercise of stock options	210	1,136
Repurchase of common stock	0	(398)
Shares retained for payment of taxes in connection with settlement of restricted stock units	(141)	(42)
Payments on promissory notes	(18)	(17)
Cash paid for debt issuance costs	(38)	0
Net cash provided by financing activities	13	679
Effect of foreign exchange rate on cash	(77)	17
Net (decrease) increase in cash, cash equivalents, and restricted cash	(9,468)	4,479
Cash, cash equivalents and restricted cash, beginning of period	23,996	19,517
Cash, cash equivalents and restricted cash, end of period	14,528	23,996
Cash and cash equivalents	13,167	23,319
Restricted cash, current portion	279	282
Long-term restricted cash	1,082	395
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows	14,528	23,996
Noncash investing and financing activities:
Change in unrealized loss on marketable securities	(7)	(4)
Initial measurement of operating lease right of use assets	259	5,824
Initial measurement of operating lease liabilities	259	7,815
Fair value of net assets acquired	30,980	0
Zonehaven, Inc [Member]
Noncash investing and financing activities:
Common stock issued in connection with the purchase of Zonehaven	(10,938)	0
Assets Acquisition of Amika Mobile Corporation [Member]
Noncash investing and financing activities:
Obligation to issue common stock in connection with the Amika Mobile asset purchase	$ (1,248)	$ 0