XML 31 R22.htm IDEA: XBRL DOCUMENT
v3.23.1

Notes Payable | 3 Months Ended
--- | ---
Mar. 31, 2023
Debt Disclosure [Abstract] |
Notes Payable | 13. NOTES PAYABLE The carrying amounts of the Company's notes payable in its Condensed Consolidated Balance Sheets were as follows:
|  | Fair Value as of |  |  | Carrying Value as of |  |  | Carrying Value as of |
(In thousands) |  | March 31, 2023 |  |  | March 31, 2023 |  |  | December 31, 2022 |
Syndicated credit agreement notes payable |  | $ | — |  |  | $ | — |  |  | $ | 24,598 |
Total Notes Payable |  | $ | — |  |  | $ | — |  |  | $ | 24,598 |
Syndicated Credit Agreement Note Payable In September 2018, ADVA entered into a syndicated credit agreement with Bayerische Landesbank and Deutsche Bank AG Branch German Business to borrow $63.7 million. On January 31, 2023, the Company repaid the outstanding borrowings under the syndicated credit agreement note payable. No amounts are available for future borrowings.

X
- Definition Notes Payable Disclosure [Text Block] + References No definition available. + Details
Name: | adtn_NotesPayableDisclosureTextBlock
Namespace Prefix: | adtn_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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