Assets and Liabilities Held for Sale and Discontinued Operations - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended
	Apr. 05, 2024	Mar. 31, 2024	Mar. 31, 2023
DZS, Inc | Affiliated Entity | Dasan Networks, Inc.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
DNI direct ownership interest		24.10%
Disposal Group, Held-for-Sale, Not Discontinued Operations | DASAN Network Solutions, Inc., D-Mobile Limited, DZS Vietnam, Dasan India Private Limited, And DZS Japan
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue		$ 25,324	$ 25,446
Cost of revenue		21,201	20,116
Disposal Group, Held-for-Sale, Not Discontinued Operations | DASAN Network Solutions, Inc., D-Mobile Limited, DZS Vietnam, Dasan India Private Limited, And DZS Japan | Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from divestiture	$ 3,800
Disposal Group, Held-for-Sale, Not Discontinued Operations | DASAN Network Solutions, Inc., D-Mobile Limited, DZS Vietnam, Dasan India Private Limited, And DZS Japan | Subsequent Event | DNS Korea | Master Engineering Services Agreement
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Annual purchase commitment	$ 2,500
Term of service agreement	7 years
Term of service agreement renewal	12 months
Expiration period	3 years
Required notice of termination	180 days
Disposal Group, Held-for-Sale, Not Discontinued Operations | DASAN Network Solutions, Inc., D-Mobile Limited, DZS Vietnam, Dasan India Private Limited, And DZS Japan | Subsequent Event | DNS Korea | Master Supply Agreement
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Term of service agreement	3 years
Term of service agreement renewal	1 year
Disposal Group, Held-for-Sale, Not Discontinued Operations | DASAN Network Solutions, Inc., D-Mobile Limited, DZS Vietnam, Dasan India Private Limited, And DZS Japan | Subsequent Event | DNS Korea | Reseller Agreement
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Term of service agreement	7 years
Term of service agreement renewal	12 months
Disposal Group, Held-for-Sale, Not Discontinued Operations | DASAN Network Solutions, Inc., D-Mobile Limited, DZS Vietnam, Dasan India Private Limited, And DZS Japan | Subsequent Event | DNS Korea | Master Services Agreement
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Term of service agreement	1 year
Term of service agreement renewal	12 months
Required notice of termination	60 days
Disposal Group, Held-for-Sale, Not Discontinued Operations | DASAN Network Solutions, Inc., D-Mobile Limited, DZS Vietnam, Dasan India Private Limited, And DZS Japan | DNI Loan Agreements | Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Debt eliminated in divestiture	$ 34,000
Disposal Group, Held-for-Sale, Not Discontinued Operations | DASAN Network Solutions, Inc., D-Mobile Limited, DZS Vietnam, Dasan India Private Limited, And DZS Japan | DNI Loan Agreements | Investor
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue		400	200
Cost of revenue		300	$ 100
Long-term debt classified as held-for-sale		$ 34,000