v2.4.1.9

Income Taxes (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013
TAXES [Abstract] |  |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] | Our income tax provision consists of the following components for 2014, 2013 and 2012 (in thousands):
| 2014 |  | 2013 |  | 2012
Current |  |  |  |  |  |  |  |
Federal | $ | 49,049 |  |  | $ | (6,093 | ) |  | $ | 93,441 |
State | 2,499 |  |  | 225 |  |  | 44 |
Foreign source withholding tax | 70,703 |  |  | 23,269 |  |  | 4,173 |
| 122,251 |  |  | 17,401 |  |  | 97,658 |
Deferred |  |  |  |  |  |  |  |
Federal | (121,937 | ) |  | (18,727 | ) |  | 22,209 |
State | (437 | ) |  | 2,614 |  |  | (4,494 | )
Foreign source withholding tax | 52,231 |  |  | 24,548 |  |  | 21,457 |
| (70,143 | ) |  | 8,435 |  |  | 39,172 |
Total | $ | 52,108 |  |  | $ | 25,836 |  |  | $ | 136,830 |
The d |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] | The deferred tax assets and liabilities are comprised of the following components at December 31, 2014 and 2013 (in thousands):
| 2014
| Federal |  | State |  | Foreign |  | Total
Net operating losses | $ | — |  |  | $ | 71,837 |  |  | $ | 4 |  |  | $ | 71,841 |
Deferred revenue, net | 50,575 |  |  | 41 |  |  | 22,657 |  |  | 73,273 |
Stock compensation | 10,567 |  |  | 1,751 |  |  | — |  |  | 12,318 |
Patent amortization | 18,337 |  |  | — |  |  | — |  |  | 18,337 |
Depreciation | 1,110 |  |  | 29 |  |  | — |  |  | 1,139 |
Other-than-temporary impairment | 10,010 |  |  | 154 |  |  | — |  |  | 10,164 |
Other accrued liabilities | 1,097 |  |  | (28 | ) |  | — |  |  | 1,069 |
Other employee benefits | 8,784 |  |  | 668 |  |  | — |  |  | 9,452 |
| 100,480 |  |  | 74,452 |  |  | 22,661 |  |  | 197,593 |
Less: valuation allowance | — |  |  | (71,731 | ) |  | — |  |  | (71,731 | )
Net deferred tax asset | $ | 100,480 |  |  | $ | 2,721 |  |  | $ | 22,661 |  |  | $ | 125,862 |
| 2013
| Federal |  | State |  | Foreign |  | Total
Net operating losses | $ | — |  |  | $ | 70,602 |  |  | $ | — |  |  | $ | 70,602 |
Deferred revenue, net | 8,564 |  |  | 56 |  |  | 4,189 |  |  | 12,809 |
Stock compensation | 7,606 |  |  | 1,088 |  |  | — |  |  | 8,694 |
Patent amortization | 16,424 |  |  | — |  |  | — |  |  | 16,424 |
Depreciation | 1,295 |  |  | 169 |  |  | — |  |  | 1,464 |
Other accrued liabilities | 1,044 |  |  | 44 |  |  | — |  |  | 1,088 |
Other-than-temporary impairment | 9,815 |  |  | 301 |  |  | — |  |  | 10,116 |
Other employee benefits | 4,497 |  |  | 517 |  |  | — |  |  | 5,014 |
| 49,245 |  |  | 72,777 |  |  | 4,189 |  |  | 126,211 |
Less: valuation allowance | — |  |  | (70,492 | ) |  | — |  |  | (70,492 | )
Net deferred tax asset | $ | 49,245 |  |  | $ | 2,285 |  |  | $ | 4,189 |  |  | $ | 55,719 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] | The following is a reconciliation of income taxes at the federal statutory rate with income taxes recorded by the company for the years ended December 31, 2014, 2013 and 2012 (in thousands):
| 2014 |  | 2013 |  | 2012
Tax at U.S. statutory rate | 35.0 | % |  | 35.0 | % |  | 35.0 | %
State tax provision | 0.1 | % |  | 4.1 | % |  | (1.1 | )%
Change in federal and state valuation allowance | — | % |  | 0.4 | % |  | (0.5 | )%
Research and development tax credits | (4.7 | )% |  | — | % |  | — | %
Uncertain tax positions | 0.9 | % |  | — | % |  | — | %
Permanent differences | 1.5 | % |  | 3.5 | % |  | 0.1 | %
Settlement with taxing authorities | 1.1 | % |  | — | % |  | — | %
Other | 0.1 | % |  | (1.1 | )% |  | 0.1 | %
Total tax provision | 34.0 | % |  | 41.9 | % |  | 33.6 | %
Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Table Text Block] | The following is a roll forward of our total gross unrecognized tax benefits, which if reversed would impact the effective tax rate, for the fiscal years 2012 through 2014 (in thousands):
| 2014 |  | 2013 |  | 2012
Balance as of January 1 | $ | — |  |  | $ | — |  |  | $ | — |
Tax positions related to current year: |  |  |  |  |  |  |  |
Additions | 95 |  |  | — |  |  | — |
Reductions | — |  |  | — |  |  | — |
Tax positions related to prior years: |  |  |  |  |
Additions | 1,266 |  |  | — |  |  | — |
Reductions | — |  |  | — |  |  | — |
Settlements | — |  |  | — |  |  | — |
Lapses in statues of limitations | — |  |  | — |  |  | — |
Balance as of December 31 | $ | 1,361 |  |  | $ | — |  |  | $ | — |

X
- Details
Name: | idcc_TaxesAbstract
Namespace Prefix: | idcc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
Name: | us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
Name: | us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
Name: | us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of unrecognized tax benefits for which a material change is reasonably possible in the next twelve months, typically including the nature of the uncertainty, the event(s) that could cause a material change, and an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made. An unrecognized tax benefit is the difference between a tax position taken in a tax return and the amounts recognized in the financial statements for which it is more likely than not, based on the technical merits of the position, that the tax position will not be sustained upon examination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
Name: | us-gaap_SummaryOfPositionsForWhichSignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration