XML 42 R30.htm IDEA: XBRL DOCUMENT
v3.26.1

Equity and Stock-Based Compensation (Tables) | 9 Months Ended
--- | ---
Jun. 30, 2026
Share-Based Payment Arrangement [Abstract] |
Summary of Stock Option Activity | The following table summarizes our stock option activity during the nine months ended June 30, 2026:
|  | Options |  |  | Weighted Average Exercise Price |
Outstanding at beginning of period |  |  | 919,741 |  |  | $ | 6.67 |
Granted |  |  | 160,000 |  |  |  | 16.05 |
Exercised |  |  | (163,342 | ) |  |  | 7.25 |
Forfeited |  |  | (29,150 | ) |  |  | 5.33 |
Outstanding at end of period |  |  | 887,249 |  |  | $ | 8.30 |
Exercisable at end of period |  |  | 605,251 |  |  | $ | 6.90 |
Weighted average fair value of options granted during the period |  | $ | 9.39 |  |  |  |
Schedule of Fair Value of Stock Option Using Black-Scholes Option Pricing Model | The fair value of options was estimated at the applicable grant date using the Black-Scholes option pricing model with the following assumptions:
|  | Nine Months Ended June 30, |
|  | 2026 |  |  | 2025 |
Risk free interest rate |  |  | 4 | % |  |  | 4 | %
Expected term |  | 5 years |  |  | 5 years |
Dividend rate |  |  | — | % |  |  | — | %
Volatility |  |  | 65 | % |  |  | 60 | %
Summary of RSU activity | The following table summarizes our RSU activity during the nine months ended June 30, 2026:
|  | Number |  |  | Weighted Average Grant Date Fair Value |
Nonvested at beginning of year |  |  | 168,024 |  |  | $ | 4.98 |
Granted |  |  | 78,955 |  |  |  | 13.11 |
Released |  |  | (77,564 | ) |  |  | 4.97 |
Forfeited |  |  | (20,399 | ) |  |  | 5.77 |
Nonvested at end of period |  |  | 149,016 |  |  | $ | 9.19 |
Summary of Proceeds and Costs Related to Underwritten Public Offering | The proceeds from the offering are intended to be used to accelerate growth across the Company’s semiconductor packaging and advanced wafer substrate fabrication platforms, for accretive merger and acquisition opportunities, and for working capital and general corporate purposes.
|  | Amount (in thousands) |
Issuance of common stock |  | $ | 60,000 |
Underwriting discounts and commissions |  |  | (3,000 | )
Other offering costs |  |  | (469 | )
Net increase in APIC |  | $ | 56,531 |

X
- Definition Summary of proceeds and costs related to underwritten public offering. + References No definition available. + Details
Name: | asys_SummaryOfProceedsAndCostsRelatedToUnderwrittenPublicOfferingTableTextBlock
Namespace Prefix: | asys_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration