Assets and Liabilities Held for Sale and Discontinued Operations - Amounts reported in the Unaudited Condensed Consolidated Statement of Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss from discontinued operations	$ (5,171)	$ (3,782)
DASAN Network Solutions, Inc., D-Mobile Limited, DZS Vietnam, Dasan India Private Limited, And DZS Japan | Disposal Group, Held-for-Sale, Not Discontinued Operations
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
Gross profit	4,123	5,330
Operating expenses	8,801	10,452
Operating loss from discontinued operations	(4,678)	(5,122)
Interest expense, net	(981)	(168)
Other income, net	959	247
Loss from discontinuing operations before income taxes	(4,700)	(5,043)
Income tax provision (benefit)	471	(1,261)
Net loss from discontinued operations	$ (5,171)	$ (3,782)