XML 75 R62.htm IDEA: XBRL DOCUMENT
v3.21.1

BALANCE SHEET DETAILS - Schedule of Inventories (Parenthetical) (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Balance Sheet Related Disclosures [Abstract] |  |
Finished goods at customer sites | $ 0.5 | $ 0.6

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

X
- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date, of merchandise or goods at customer sites for which the customer has taken possession, but based on contractual terms, title has not yet passed to the customer. + References No definition available. + Details
Name: | utsi_InventoryFinishedGoodsNetOfReservesAtCustomerSites
Namespace Prefix: | utsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant