Leases - Schedule of Financial Statement Classification of Lease Balances With Consolidated Balance Sheets (Details) - USD ($)	Sep. 30, 2020	Oct. 01, 2019
Leases [Abstract]
Operating lease assets	$ 5,124,000	$ 146,000
Finance lease assets	$ 26,000	$ 49,000
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet	us-gaap:PropertyPlantAndEquipmentNet
Total lease assets	$ 5,150,000	$ 195,000
Operating lease liabilities	$ 113,000	$ 99,000
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent
Finance lease liabilities	$ 11,000	$ 22,000
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent
Operating lease liabilities	$ 5,048,000	$ 15,000
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	asys:FinanceAndOperatingLeaseLiabilityNoncurrent	asys:FinanceAndOperatingLeaseLiabilityNoncurrent
Finance lease liabilities	$ 16,000	$ 27,000
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	asys:FinanceAndOperatingLeaseLiabilityNoncurrent	asys:FinanceAndOperatingLeaseLiabilityNoncurrent
Total lease liabilities	$ 5,188,000	$ 163,000