v2.4.1.9

Consolidated Statements of Cash Flows Statement (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Accrued Capitalized Patent Costs |  | $ 452 idcc_AccruedCapitalizedPatentCosts | $ (286)idcc_AccruedCapitalizedPatentCosts
NET INCOME | 101,420 us-gaap_NetIncomeLoss | 35,683 us-gaap_NetIncomeLoss | 271,804 us-gaap_NetIncomeLoss
Net Cash Provided by (Used in) Operating Activities [Abstract] |  |  |
Net cash provided by operating activities | 242,013 us-gaap_NetCashProvidedByUsedInOperatingActivities | 218,175 us-gaap_NetCashProvidedByUsedInOperatingActivities | 177,608 us-gaap_NetCashProvidedByUsedInOperatingActivities
Depreciation, Depletion and Amortization | 42,246 us-gaap_DepreciationDepletionAndAmortization | 33,385 us-gaap_DepreciationDepletionAndAmortization | 26,248 us-gaap_DepreciationDepletionAndAmortization
Amortization of Financing Costs and Discounts | 10,325 us-gaap_AmortizationOfFinancingCostsAndDiscounts | 9,726 us-gaap_AmortizationOfFinancingCostsAndDiscounts | 9,165 us-gaap_AmortizationOfFinancingCostsAndDiscounts
Recognition of Deferred Revenue | (163,139)us-gaap_RecognitionOfDeferredRevenue | (174,014)us-gaap_RecognitionOfDeferredRevenue | (223,419)us-gaap_RecognitionOfDeferredRevenue
Increase in deferred revenue | 272,885 us-gaap_IncreaseDecreaseInDeferredRevenue | 209,930 us-gaap_IncreaseDecreaseInDeferredRevenue | 174,604 us-gaap_IncreaseDecreaseInDeferredRevenue
Increase (Decrease) in Deferred Income Taxes | (62,979)us-gaap_IncreaseDecreaseInDeferredIncomeTaxes | 4,861 us-gaap_IncreaseDecreaseInDeferredIncomeTaxes | 40,416 us-gaap_IncreaseDecreaseInDeferredIncomeTaxes
Share-based Compensation | 18,494 us-gaap_ShareBasedCompensation | 15,940 us-gaap_ShareBasedCompensation | 6,495 us-gaap_ShareBasedCompensation
Restructuring Charges | 0 us-gaap_RestructuringCharges | 1,544 us-gaap_RestructuringCharges | 12,536 us-gaap_RestructuringCharges
Other than Temporary Impairment Losses, Investments | 559 us-gaap_ImpairmentOfInvestments | 21,720 us-gaap_ImpairmentOfInvestments | 0 us-gaap_ImpairmentOfInvestments
Other Noncash Expense | 700 us-gaap_OtherNoncashExpense | 0 us-gaap_OtherNoncashExpense | 10,654 us-gaap_OtherNoncashExpense
Other Operating Activities, Cash Flow Statement | 572 us-gaap_OtherOperatingActivitiesCashFlowStatement | 424 us-gaap_OtherOperatingActivitiesCashFlowStatement | 90 us-gaap_OtherOperatingActivitiesCashFlowStatement
Decrease (increase) in assets: |  |  |
Increase (Decrease) in Receivables | 26,128 us-gaap_IncreaseDecreaseInReceivables | 77,044 us-gaap_IncreaseDecreaseInReceivables | (141,795)us-gaap_IncreaseDecreaseInReceivables
Deferred charges and other current assets | 6,156 us-gaap_IncreaseDecreaseInOtherOperatingAssets | (9,753)us-gaap_IncreaseDecreaseInOtherOperatingAssets | (21,651)us-gaap_IncreaseDecreaseInOtherOperatingAssets
Increase (decrease) in liabilities: |  |  |
Increase (Decrease) in Accounts Payable | (10,396)us-gaap_IncreaseDecreaseInAccountsPayable | 14,655 us-gaap_IncreaseDecreaseInAccountsPayable | 2,453 us-gaap_IncreaseDecreaseInAccountsPayable
Accrued taxes payable | (5,635)us-gaap_IncreaseDecreaseInAccruedTaxesPayable | 3,096 us-gaap_IncreaseDecreaseInAccruedTaxesPayable | 695 us-gaap_IncreaseDecreaseInAccruedTaxesPayable
Other accrued expenses | 5,853 us-gaap_IncreaseDecreaseInOtherAccruedLiabilities | (24,522)us-gaap_IncreaseDecreaseInOtherAccruedLiabilities | 21,849 us-gaap_IncreaseDecreaseInOtherAccruedLiabilities
Net Cash Provided by (Used in) Investing Activities [Abstract] |  |  |
Purchases of short-term investments | 438,157 us-gaap_PaymentsToAcquireShortTermInvestments | 417,728 us-gaap_PaymentsToAcquireShortTermInvestments | 331,828 us-gaap_PaymentsToAcquireShortTermInvestments
Sales of short-term investments | 363,175 us-gaap_ProceedsFromSaleOfShortTermInvestments | 443,074 us-gaap_ProceedsFromSaleOfShortTermInvestments | 442,182 us-gaap_ProceedsFromSaleOfShortTermInvestments
Purchases of property and equipment | 7,095 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 4,591 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 3,621 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Capitalized patent costs | 31,932 idcc_CapitalizedPatentCosts | 34,057 idcc_CapitalizedPatentCosts | 28,317 idcc_CapitalizedPatentCosts
Payments to Acquire Intangible Assets | 26,300 us-gaap_PaymentsToAcquireIntangibleAssets | 25,013 us-gaap_PaymentsToAcquireIntangibleAssets | 15,450 us-gaap_PaymentsToAcquireIntangibleAssets
Net cash used in investing activities | (140,309)us-gaap_NetCashProvidedByUsedInInvestingActivities | (38,315)us-gaap_NetCashProvidedByUsedInInvestingActivities | 62,966 us-gaap_NetCashProvidedByUsedInInvestingActivities
Net Cash Provided by (Used in) Financing Activities [Abstract] |  |  |
Net proceeds from exercise of stock options | 402 us-gaap_ProceedsFromStockOptionsExercised | 1,032 us-gaap_ProceedsFromStockOptionsExercised | 2,111 us-gaap_ProceedsFromStockOptionsExercised
Payments on long-term debt, including capital lease obligations | 0 us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities | 0 us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities | 180 us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities
Dividends paid | 23,729 us-gaap_PaymentsOfDividends | 12,354 us-gaap_PaymentsOfDividends | 83,077 us-gaap_PaymentsOfDividends
Proceeds from Noncontrolling Interests | 5,101 us-gaap_ProceedsFromMinorityShareholders | 7,652 us-gaap_ProceedsFromMinorityShareholders | 0 us-gaap_ProceedsFromMinorityShareholders
Excess Tax Benefit from Share-based Compensation, Financing Activities | 0 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 815 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 898 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Payments for Repurchase of Common Stock | 152,625 us-gaap_PaymentsForRepurchaseOfCommonStock | 29,134 us-gaap_PaymentsForRepurchaseOfCommonStock | 152,694 us-gaap_PaymentsForRepurchaseOfCommonStock
Net Cash Provided by (Used in) Financing Activities | (170,851)us-gaap_NetCashProvidedByUsedInFinancingActivities | (31,989)us-gaap_NetCashProvidedByUsedInFinancingActivities | (232,942)us-gaap_NetCashProvidedByUsedInFinancingActivities
Cash and Cash Equivalents, Period Increase (Decrease) | (69,147)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 147,871 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 7,632 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
CASH AND CASH EQUIVALENTS, END OF PERIOD | 428,567 us-gaap_CashAndCashEquivalentsAtCarryingValue | 497,714 us-gaap_CashAndCashEquivalentsAtCarryingValue | 349,843 us-gaap_CashAndCashEquivalentsAtCarryingValue
Interest Paid | 5,750 us-gaap_InterestPaid | 5,750 us-gaap_InterestPaid | 5,754 us-gaap_InterestPaid
Income taxes paid, including foreign witholding taxes | 114,876 us-gaap_IncomeTaxesPaid | 24,961 us-gaap_IncomeTaxesPaid | 116,871 us-gaap_IncomeTaxesPaid
Dividends Payable | 7,456 us-gaap_DividendsPayableCurrentAndNoncurrent | 4,031 us-gaap_DividendsPayableCurrentAndNoncurrent | 0 us-gaap_DividendsPayableCurrentAndNoncurrent
Other Significant Noncash Transaction, Value of Consideration Received | 19,250 us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1 | 0 us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1 | 28,900 us-gaap_OtherSignificantNoncashTransactionValueOfConsiderationReceived1
Excess Tax Benefit from Share-based Compensation, Operating Activities | (1,176)us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities | 0 us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities | 0 us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
Patents [Member] |  |  |
Accrued Capitalized Patent Costs | $ (20,546)idcc_AccruedCapitalizedPatentCosts / idcc_SupplementalCashFlowInformationAxis = us-gaap_PatentsMember |  |

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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.18) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.22) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 + Details
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- Definition Other expenses or losses included in net income that result in no cash outflows or inflows in the period and are not separately disclosed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The value of the noncash (or part noncash) consideration received in a transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of a transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition Amount of cash inflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash inflow from sales of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash outflow associated with security instruments that either represent a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes repayments of (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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