XML 72 R56.htm IDEA: XBRL DOCUMENT
v3.21.1

Summary of Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |
Property, plant and equipment, total impairment loss | $ 109 |
Intangible assets, total impairment losses | 15 |
Fair Value, Measurements, Nonrecurring |  |
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |
Prepaid licensing and royalty fees, total impairment losses | 85 | [1]
Property, plant and equipment, total impairment loss | 109 | [2]
Intangible assets, total impairment losses | 15 | [3]
Total | $ 209 |
[1] | Impairment losses on certain prepaid licensing and royalty fees which were determined to be impaired: In 2019, certain prepaid licensing and royalty fees were written down to zero, resulting in an impairment charge of $85 thousand. This impairment is included in operating expenses in the consolidated statements of operations. The impairment charges for the prepaid licensing and royalty fees related to certain licensed games within our digital entertainment business that we stopped operating or for which the carrying amounts of the related assets were determined not to be recoverable from their expected future undiscounted cash flows. The licensing fee and related royalties are re-valued when impairment exists, using unobservable inputs such as discounted cash flows, incorporating adjusted available market discount rate information and our Company’s estimates for liquidity risk, along with other cash flow model related assumptions.
[2] | Impairment losses on certain property, plant, and equipment which were determined to be impaired: In 2019, we recognized an impairment loss of $109 thousand on property, plant and equipment as while the recent years’ operating losses were expected to continue in the short-term, the carrying amounts of those long-lived assets would not be recoverable based on cash flow projections.
[3] | Impairment losses on certain intangible assets which were determined to be impaired: In 2019, we recognized an impairment loss of $15 thousand on intangible assets as while the recent years’ operating losses were expected to continue in the short-term, the carrying amounts of those intangible assets would not be recoverable based on cash flow projections.

X
- Definition Gain Loss on recovery of Impairment loss on prepaid licensing and royalty fees. + References No definition available. + Details
Name: | gigm_GainLossOnRecoveryOfImpairmentLossOnPrepaidLicensingAndRoyaltyFees
Namespace Prefix: | gigm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Gain on recovery of impairment loss. + References No definition available. + Details
Name: | gigm_GainOnRecoveryOfImpairmentLoss
Namespace Prefix: | gigm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
Name: | us-gaap_ImpairmentOfIntangibleAssetsFinitelived
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228 + Details
Name: | us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |