Revenue Recognition - Additional Information (Details) - USD ($)	3 Months Ended						12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2022	Sep. 30, 2021
Disaggregation Of Revenue [Line Items]
Cost of sales							$ 51,649,000	$ 58,884,000
Unbilled receivables								1,051,000
Deferred contract liabilities							0	0
Outstanding promissory note							3,000,000.0
Total revenue							64,109,000	75,864,000
Value of notes with customer							8,225,000	7,896,000
Secured Promissory Note
Disaggregation Of Revenue [Line Items]
Value of notes with customer	$ 8,000,000.0	$ 3,700,000				$ 10,000,000.0
Term of the notes	1 year	9 months	6 months			3 years
Monthly principal and interest payments						$ 300,000
Frequency of payments						monthly
U.S. Customs and Border Protection ("CBP")
Disaggregation Of Revenue [Line Items]
Awarded contract amount					$ 10,500,000
Increase in contract amount					$ 300,000
Revenue recognized under the contract							300,000	9,900,000
Shipping and Handling
Disaggregation Of Revenue [Line Items]
Cost of sales							600,000	$ 400,000
Product
Disaggregation Of Revenue [Line Items]
Total revenue				$ 12,500,000		$ 0
Partially financed product sale						$ 12,500,000
Payments received from customer							$ 9,500,000