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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net income | $ 1,314 us-gaap_NetIncomeLoss | $ 4,022 us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |
Amortization of deferred revenue | (1,177)us-gaap_RecognitionOfDeferredRevenue | (1,127)us-gaap_RecognitionOfDeferredRevenue
Depreciation | 702 us-gaap_Depreciation | 501 us-gaap_Depreciation
Amortization of intangibles | 2,750 us-gaap_AmortizationOfIntangibleAssets | 2,750 us-gaap_AmortizationOfIntangibleAssets
Amortization of premium and discount on investments, net | (135)us-gaap_AmortizationOfDebtDiscountPremium | (136)us-gaap_AmortizationOfDebtDiscountPremium
Stock-based compensation to employees | 1,715 us-gaap_ShareBasedCompensation | 1,899 us-gaap_ShareBasedCompensation
Stock-based compensation to Board of Directors and Scientific Advisory Board | 366 oled_StockBasedCompensationToBoardOfDirectorsAndScientificAdvisoryBoard | 203 oled_StockBasedCompensationToBoardOfDirectorsAndScientificAdvisoryBoard
Deferred income tax benefit | 334 us-gaap_DeferredIncomeTaxExpenseBenefit | 1,773 us-gaap_DeferredIncomeTaxExpenseBenefit
Retirement plan benefit expense | 592 us-gaap_PensionAndOtherPostretirementBenefitExpense | 419 us-gaap_PensionAndOtherPostretirementBenefitExpense
Decrease (increase) in assets: |  |
Accounts receivable | 3,911 us-gaap_IncreaseDecreaseInAccountsReceivable | (8,851)us-gaap_IncreaseDecreaseInAccountsReceivable
Inventories | (1,858)us-gaap_IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories | (3,997)us-gaap_IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories
Other current assets | 703 us-gaap_IncreaseDecreaseInOtherCurrentAssets | (4,887)us-gaap_IncreaseDecreaseInOtherCurrentAssets
Other assets | 20 us-gaap_IncreaseDecreaseInOtherNoncurrentAssets | 0 us-gaap_IncreaseDecreaseInOtherNoncurrentAssets
(Decrease) increase in liabilities: |  |
Accounts payable and accrued expenses | (8,584)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities | (4,598)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Other current liabilities | (55)us-gaap_IncreaseDecreaseInOtherCurrentLiabilities | 1,017 us-gaap_IncreaseDecreaseInOtherCurrentLiabilities
Deferred revenue | 46,382 us-gaap_IncreaseDecreaseInDeferredRevenue | 3,692 us-gaap_IncreaseDecreaseInDeferredRevenue
Net cash provided by (used in) operating activities | 46,980 us-gaap_NetCashProvidedByUsedInOperatingActivities | (7,320)us-gaap_NetCashProvidedByUsedInOperatingActivities
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchases of property and equipment | (1,950)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (917)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchases of investments | (51,957)us-gaap_PaymentsToAcquireShortTermInvestments | (127,244)us-gaap_PaymentsToAcquireShortTermInvestments
Proceeds from sale of investments | 90,876 us-gaap_ProceedsFromSaleOfShortTermInvestments | 102,823 us-gaap_ProceedsFromSaleOfShortTermInvestments
Net cash provided by (used in) investing activities | 36,969 us-gaap_NetCashProvidedByUsedInInvestingActivities | (25,338)us-gaap_NetCashProvidedByUsedInInvestingActivities
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Proceeds from issuance of common stock | 90 us-gaap_ProceedsFromIssuanceOfCommonStock | 86 us-gaap_ProceedsFromIssuanceOfCommonStock
Proceeds from the exercise of common stock options | 702 oled_ProceedsFromStockOptionsAndWarrantsExercised | 616 oled_ProceedsFromStockOptionsAndWarrantsExercised
Payment of withholding taxes related to stock-based employee compensation | (4,970)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation | (2,699)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Net cash used in financing activities | (4,178)us-gaap_NetCashProvidedByUsedInFinancingActivities | (1,997)us-gaap_NetCashProvidedByUsedInFinancingActivities
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | 79,771 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (34,655)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD | 45,418 us-gaap_CashAndCashEquivalentsAtCarryingValue | 70,586 us-gaap_CashAndCashEquivalentsAtCarryingValue
CASH AND CASH EQUIVALENTS, END OF PERIOD | $ 125,189 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 35,931 us-gaap_CashAndCashEquivalentsAtCarryingValue

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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: 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=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3044-108585 + Details
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- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49171198&loc=d3e33268-110906 + Details
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- Definition The amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for (1) defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss) on assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments) and for (2) defined contribution plans (to the extent that a plan's defined contributions to an individual's account are to be made for periods in which that individual renders services, the net cost for a period is the contribution called for in that period; if a plan calls for contributions for periods after an individual retires or terminates, the estimated cost is accrued during the employee's service period). + 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=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + 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 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 + 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=56944662&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 amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. For cash flows, this element primarily pertains to amortization of deferred credits on long-term arrangements. As a noncash item, it is deducted from net income when calculating cash provided by or used in operations using the indirect method. + 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=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A -Subsection 1 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + 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 (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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