Revenue - Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2020
Capitalized Contract Cost [Line Items]
Practical Expedient, Financing Component	true
Current contract assets	$ 800		$ 1,000
Non-current contract assets	0		0
Current contract liabilities	1,212		947
Non-current contract liabilities	200		200
Revenue recognized included in contract liabilities	300
Current capitalized costs	104		130
Non-current capitalized costs	0		0
Incremental costs amortized	87	$ 78
Impairment related to costs capitalized	$ 0
Payment terms	30 days
Practical Expedient, Incremental Costs	true
Remaining Performance Obligation, Optional Exemption	true
Minimum
Capitalized Contract Cost [Line Items]
Amortization Period	3 years
Maximum
Capitalized Contract Cost [Line Items]
Amortization Period	6 years
Royalty Agreement | Minimum
Capitalized Contract Cost [Line Items]
Payment terms	1 year
Managed Service Contracts | Minimum
Capitalized Contract Cost [Line Items]
Payment terms	1 year
Europe | Maximum
Capitalized Contract Cost [Line Items]
Payment terms	90 days
TS
Capitalized Contract Cost [Line Items]
Current capitalized costs	$ 13		13
Non-current capitalized costs	18		$ 22
Incremental costs amortized	3	$ 3
Impairment related to costs capitalized	$ 0