XML 40 R26.htm IDEA: XBRL DOCUMENT
v3.26.1

Inventories (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 | Dec. 31, 2025
Inventory Disclosure [Abstract] |  |
Summary of the Components of Inventories | The following table represents the components of inventories as of March 31, 2026 and December 31, 2025 (in thousands):
|  | March 31, 2026 |  |  | December 31, 2025 |
Raw materials |  | $ | 2,083 |  |  | $ | 409 |
Work in progress |  |  | 14,918 |  |  |  | 11,732 |
Finished goods |  |  | 6,462 |  |  |  | 4,796 |
Total inventories |  | $ | 23,463 |  |  | $ | 16,937 |
| The following table represents the components of inventories as of December 31, 2025 and December 31, 2024 (in thousands ):
|  | 2025 |  |  | 2024 |
Raw materials |  | $ | 409 |  |  | $ | 45 |
Work in progress |  |  | 11,732 |  |  |  | 9,547 |
Finished goods |  |  | 4,796 |  |  |  | 5,416 |
Total inventories |  | $ | 16,937 |  |  | $ | 15,008 |
Summary of Changes in Company's Inventory Allowance |  | Changes in the Company’s inventory allowance were as follows (in thousands):
Balance at December 31, 2023 |  | $ | 24,204 |
Valuation allowance |  |  | 428 |
Sell-through or scrap of inventory |  |  | (7,213 | )
Balance at December 31, 2024 |  | $ | 17,419 |
Valuation allowance |  |  | 199 |
Sell-through or scrap of inventory |  |  | (2,721 | )
Balance at December 31, 2025 |  | $ | 14,897 |

X
- Definition Schedule of changes in inventory allowance. + References No definition available. + Details
Name: | ambq_ScheduleOfChangesInInventoryAllowanceTableTextBlock
Namespace Prefix: | ambq_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483489/210-10-50-1 + Details
Name: | us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration