XML 74 R59.htm IDEA: XBRL DOCUMENT v3.8.0.1

CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS - Long-term investments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS
Total investment	$ 5,856	$ 7,753
Cost Method Investments
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS
Total investment	3,499	3,499
Equity Method Investments
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS
Total investment	2,357	2,554
AFS
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS
Total investment		1,700
UTStarcom Hong Kong Holdings Ltd. | Cost Method Investments
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS
Total investment	3,499	3,499
ACELAND | Equity Method Investments
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS
Total investment	$ 2,357	2,554
AioTV | AFS
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS
Total investment		$ 1,700

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_InvestmentHoldingsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_InvestmentSecondaryCategorizationAxis=us-gaap_CostmethodInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentSecondaryCategorizationAxis=us-gaap_EquityMethodInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentSecondaryCategorizationAxis=us-gaap_AvailableforsaleSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentIssuerAxis=utsi_UTStarcomHongKongHoldingsLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentIssuerAxis=utsi_AcelandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentIssuerAxis=utsi_AioTVIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: