$CHGG
CHEGG, INC Stock $chgg

$chgg Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-K Financial Statement

#000136495419000027 Filed on February 25, 2019

Income Statement

Concept	2017 Q4	2017 Q3	2017 Q2
Revenue	$73.51M	$62.64M	$56.32M
YoY Change	16.57%	-12.2%	6.19%
Cost Of Revenue	$19.40M	$22.36M	$17.04M
YoY Change	-5.83%	-42.23%	-20.39%
Gross Profit	$54.13M	$40.28M	$39.28M
YoY Change	27.4%	23.4%	24.17%
Gross Profit Margin	73.63%	64.31%	69.74%
Selling, General & Admin	$28.20M	$31.50M	$24.60M
YoY Change	5.62%	8.03%	-6.52%
% of Gross Profit	52.1%	78.2%	62.63%
Research & Development	$22.80M	$19.88M	$19.90M
YoY Change	33.33%	22.38%	24.11%
% of Gross Profit	42.12%	49.34%	50.67%
Depreciation & Amortization	$5.000M	$5.200M	$4.700M
YoY Change	2.04%	-7.14%	-24.19%
% of Gross Profit	9.24%	12.91%	11.97%
Operating Expenses	$51.10M	$51.44M	$44.56M
YoY Change	16.67%	7.23%	11.38%
Operating Profit	$3.026M	-$11.16M	-$5.282M
YoY Change	-330.11%	-27.21%	-36.93%
Interest Expense	$0.00	$0.00	$0.00
YoY Change			-100.0%
% of Operating Profit	0.0%
Other Income/Expense, Net	$500.0K	$242.0K	-$27.00K
YoY Change	-350.0%	-235.96%	-78.23%
Pretax Income	$3.500M	-$10.92M	-$5.309M
YoY Change	-391.67%	-29.6%	-37.53%
Income Tax	$100.0K	$598.0K	$716.0K
% Of Pretax Income	2.86%
Net Earnings	$3.659M	-$11.52M	-$6.025M
YoY Change	-345.74%	-28.31%	-33.12%
Net Earnings / Revenue	4.98%	-18.38%	-10.7%
Basic Earnings Per Share	$0.03	-$0.11	-$0.06
Diluted Earnings Per Share	$0.03	-$0.11	-$0.06
COMMON SHARES
Basic Shares Outstanding	109.0M shares	103.0M shares	95.05M shares
Diluted Shares Outstanding	121.6M shares	103.0M shares	95.05M shares

Balance Sheet

Concept	2017 Q4	2017 Q3	2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$208.2M	$203.1M	$66.10M
YoY Change	169.34%	125.17%	33.0%
Cash & Equivalents	$126.5M	$122.2M	$66.09M
Short-Term Investments	$81.70M	$80.90M
Other Short-Term Assets	$7.845M	$23.96M	$7.571M
YoY Change	-62.67%	-32.65%	-81.18%
Inventory
Prepaid Expenses	$2.043M	$3.865M	$6.950M
Receivables	$10.86M	$9.843M	$8.750M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$228.9M	$240.8M	$89.36M
YoY Change	105.56%	72.89%	-17.59%
LONG-TERM ASSETS
Property, Plant & Equipment	$47.49M	$45.08M	$40.29M
YoY Change	34.52%	46.52%	37.26%
Goodwill	$125.3M	$116.2M	$116.2M
YoY Change	7.77%	1.09%	1.09%
Intangibles	$21.15M	$16.60M	$17.97M
YoY Change	1.95%	-23.36%	-22.08%
Long-Term Investments	$20.30M	$17.00M
YoY Change
Other Assets	$3.765M	$4.419M	$4.297M
YoY Change	-14.66%	-20.59%	-17.79%
Total Long-Term Assets	$218.0M	$199.3M	$178.8M
YoY Change	21.59%	12.67%	-3.07%
TOTAL ASSETS
Total Short-Term Assets	$228.9M	$240.8M	$89.36M
Total Long-Term Assets	$218.0M	$199.3M	$178.8M
Total Assets	$446.9M	$440.2M	$268.2M
YoY Change	53.77%	39.2%	-8.44%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$7.049M	$2.109M	$809.0K
YoY Change	36.21%	-73.61%	-87.08%
Accrued Expenses	$31.07M	$41.94M	$27.86M
YoY Change	-29.89%	-28.96%	-39.99%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$51.56M	$65.96M	$41.13M
YoY Change	-19.85%	-32.03%	-38.75%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$4.305M	$5.200M	$5.000M
YoY Change	-2.16%	26.83%	25.0%
Total Long-Term Liabilities	$4.305M	$5.243M	$4.974M
YoY Change	-1.78%	28.66%	24.04%
TOTAL LIABILITIES
Total Short-Term Liabilities	$51.56M	$65.96M	$41.13M
Total Long-Term Liabilities	$4.305M	$5.243M	$4.974M
Total Liabilities	$55.87M	$71.20M	$46.10M
YoY Change	-18.69%	-29.58%	-35.21%
SHAREHOLDERS EQUITY
Retained Earnings	-$391.6M	-$395.3M	-$383.8M
YoY Change	5.46%	6.88%	8.47%
Common Stock	$783.0M	$764.2M	$605.7M
YoY Change	31.93%	30.61%	5.22%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$391.1M	$369.0M	$222.1M
YoY Change
Total Liabilities & Shareholders Equity	$446.9M	$440.2M	$268.2M
YoY Change	53.77%	39.2%	-8.44%

Cashflow Statement

Concept	2017 Q4	2017 Q3	2017 Q2
OPERATING ACTIVITIES
Net Income	$3.659M	-$11.52M	-$6.025M
YoY Change	-345.74%	-28.31%	-33.12%
Depreciation, Depletion And Amortization	$5.000M	$5.200M	$4.700M
YoY Change	2.04%	-7.14%	-24.19%
Cash From Operating Activities	$21.80M	$13.30M	$15.70M
YoY Change	-440.63%	-64.81%	29.75%
INVESTING ACTIVITIES
Capital Expenditures	-$6.200M	-$7.400M	-$7.700M
YoY Change	-11.43%	94.74%	-19.79%
Acquisitions
YoY Change
Other Investing Activities	-$19.10M	-$97.90M	$100.0K
YoY Change	-3283.33%	-1441.1%	-98.44%
Cash From Investing Activities	-$25.30M	-$105.3M	-$7.600M
YoY Change	295.31%	-3108.57%	145.16%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	7.800M	148.2M	-11.90M
YoY Change	-1075.0%	-18625.0%	1387.5%
NET CHANGE
Cash From Operating Activities	21.80M	13.30M	15.70M
Cash From Investing Activities	-25.30M	-105.3M	-7.600M
Cash From Financing Activities	7.800M	148.2M	-11.90M
Net Change In Cash	4.300M	56.20M	-3.800M
YoY Change	-131.62%	38.77%	-146.34%
FREE CASH FLOW
Cash From Operating Activities	$21.80M	$13.30M	$15.70M
Capital Expenditures	-$6.200M	-$7.400M	-$7.700M
Free Cash Flow	$28.00M	$20.70M	$23.40M
YoY Change	4566.67%	-50.24%	7.83%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2017Q4	chgg	Accrued Purchases Of Long Lived Assets AccruedPurchasesOfLongLivedAssets	3573000	USD
CY2018Q4	chgg	Accrued Purchases Of Long Lived Assets AccruedPurchasesOfLongLivedAssets	1210000	USD
CY2017Q4	chgg	Acquisition Related Compensation Liability AcquisitionRelatedCompensationLiability	623000	USD
CY2018Q4	chgg	Acquisition Related Compensation Liability AcquisitionRelatedCompensationLiability	8536000	USD
CY2018	chgg	Adjustments To Additional Paid In Capital Purchase Of Capped Call AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCall	39227000	USD
CY2018	chgg	Available For Sale Securities Weighted Average Maturity AvailableForSaleSecuritiesWeightedAverageMaturity	P5M
CY2018Q4	chgg	Availableforsale Securities Debt Maturities Year One Through Two Amortized Cost Basis AvailableforsaleSecuritiesDebtMaturitiesYearOneThroughTwoAmortizedCostBasis	16059000	USD
CY2018Q4	chgg	Availableforsale Securities Debt Maturities Year One Through Two Fair Value AvailableforsaleSecuritiesDebtMaturitiesYearOneThroughTwoFairValue	16052000	USD
CY2016	chgg	Deferred Income Tax Expense Benefit Acquisitions DeferredIncomeTaxExpenseBenefitAcquisitions	0	USD
CY2017	chgg	Deferred Income Tax Expense Benefit Acquisitions DeferredIncomeTaxExpenseBenefitAcquisitions	0	USD
CY2018	chgg	Deferred Income Tax Expense Benefit Acquisitions DeferredIncomeTaxExpenseBenefitAcquisitions	-323000	USD
CY2017Q4	chgg	Deferred Tax Assets Property Plantand Equipment Inventoryand Intangible Assets DeferredTaxAssetsPropertyPlantandEquipmentInventoryandIntangibleAssets	3905000	USD
CY2018Q4	chgg	Deferred Tax Assets Property Plantand Equipment Inventoryand Intangible Assets DeferredTaxAssetsPropertyPlantandEquipmentInventoryandIntangibleAssets	3745000	USD
CY2016	chgg	Depreciation Textbook Library DepreciationTextbookLibrary	9267000	USD
CY2017	chgg	Depreciation Textbook Library DepreciationTextbookLibrary	0	USD
CY2018	chgg	Depreciation Textbook Library DepreciationTextbookLibrary	0	USD
CY2016	chgg	Effective Income Tax Rate Reconciliation Acquisition Percent EffectiveIncomeTaxRateReconciliationAcquisitionPercent	0.000
CY2017	chgg	Effective Income Tax Rate Reconciliation Acquisition Percent EffectiveIncomeTaxRateReconciliationAcquisitionPercent	0.000
CY2018	chgg	Effective Income Tax Rate Reconciliation Acquisition Percent EffectiveIncomeTaxRateReconciliationAcquisitionPercent	0.152
CY2017	chgg	Employee Stock Purchase Plan Espp Weighted Average Purchase Priceof Shares Purchased EmployeeStockPurchasePlanESPPWeightedAveragePurchasePriceofSharesPurchased	7.88
CY2018	chgg	Employee Stock Purchase Plan Espp Weighted Average Purchase Priceof Shares Purchased EmployeeStockPurchasePlanESPPWeightedAveragePurchasePriceofSharesPurchased	15.77
CY2017	chgg	Finite Lived And Indefinite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedAndIndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	6000	USD
CY2018	chgg	Finite Lived And Indefinite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedAndIndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	-271000	USD
CY2018	chgg	Increase Decrease In Accounts Receivable Net IncreaseDecreaseInAccountsReceivableNet	1878000	USD
CY2018	chgg	Increase Decrease In Deferred Revenue Percent IncreaseDecreaseInDeferredRevenuePercent	0.30
CY2018	chgg	Increase Decreasein Accounts Receivable Percent IncreaseDecreaseinAccountsReceivablePercent	0.17
CY2016	chgg	Loss From Write Offs Of Textbooks LossFromWriteOffsOfTextbooks	1090000	USD
CY2017	chgg	Loss From Write Offs Of Textbooks LossFromWriteOffsOfTextbooks	314000	USD
CY2018	chgg	Loss From Write Offs Of Textbooks LossFromWriteOffsOfTextbooks	0	USD
CY2018Q4	chgg	Number Of Strategic Investments NumberOfStrategicInvestments	2	investment
CY2016	chgg	Payments For Convertible Senior Notes Capped Call PaymentsForConvertibleSeniorNotesCappedCall	0	USD
CY2017	chgg	Payments For Convertible Senior Notes Capped Call PaymentsForConvertibleSeniorNotesCappedCall	0	USD
CY2018	chgg	Payments For Convertible Senior Notes Capped Call PaymentsForConvertibleSeniorNotesCappedCall	39227000	USD
CY2016	chgg	Payments For Repurchase Of Common Stock And Vested Stock Options PaymentsForRepurchaseOfCommonStockAndVestedStockOptions	0	USD
CY2017	chgg	Payments For Repurchase Of Common Stock And Vested Stock Options PaymentsForRepurchaseOfCommonStockAndVestedStockOptions	0	USD
CY2018	chgg	Payments For Repurchase Of Common Stock And Vested Stock Options PaymentsForRepurchaseOfCommonStockAndVestedStockOptions	20000000	USD
CY2016	chgg	Payments To Acquire Textbooks PaymentsToAcquireTextbooks	886000	USD
CY2017	chgg	Payments To Acquire Textbooks PaymentsToAcquireTextbooks	0	USD
CY2018	chgg	Payments To Acquire Textbooks PaymentsToAcquireTextbooks	0	USD
CY2016	chgg	Proceeds From Issuance Of Employee Stock Purchase Plan ProceedsFromIssuanceOfEmployeeStockPurchasePlan	2104000	USD
CY2017	chgg	Proceeds From Issuance Of Employee Stock Purchase Plan ProceedsFromIssuanceOfEmployeeStockPurchasePlan	23659000	USD
CY2018	chgg	Proceeds From Issuance Of Employee Stock Purchase Plan ProceedsFromIssuanceOfEmployeeStockPurchasePlan	29116000	USD
CY2016	chgg	Proceeds From Sale Of Textbooks ProceedsFromSaleOfTextbooks	25646000	USD
CY2017	chgg	Proceeds From Sale Of Textbooks ProceedsFromSaleOfTextbooks	6943000	USD
CY2018	chgg	Proceeds From Sale Of Textbooks ProceedsFromSaleOfTextbooks	0	USD
CY2018	chgg	Restructuring And Related Cost Required Employee Continuing Service Period RestructuringAndRelatedCostRequiredEmployeeContinuingServicePeriod	P60D
CY2017	chgg	Revenuefrom Contractwith Customer Including Assessed Tax Increase Decrease RevenuefromContractwithCustomerIncludingAssessedTaxIncreaseDecrease	976000	USD
CY2018	chgg	Revenuefrom Contractwith Customer Including Assessed Tax Increase Decrease RevenuefromContractwithCustomerIncludingAssessedTaxIncreaseDecrease	66018000	USD
CY2017	chgg	Revenuefrom Contractwith Customer Including Assessed Tax Increase Decrease Percent RevenuefromContractwithCustomerIncludingAssessedTaxIncreaseDecreasePercent	0.00
CY2018	chgg	Revenuefrom Contractwith Customer Including Assessed Tax Increase Decrease Percent RevenuefromContractwithCustomerIncludingAssessedTaxIncreaseDecreasePercent	0.26
CY2017	chgg	Stock Issued During Period Value Common Warrants Exercised StockIssuedDuringPeriodValueCommonWarrantsExercised	0	USD
CY2018	chgg	Stock Issued During Period Value Common Warrants Exercised StockIssuedDuringPeriodValueCommonWarrantsExercised	0	USD
CY2016	chgg	Stock Issued During Period Value Employee Stock Purchase Planand Stock Options Exercised StockIssuedDuringPeriodValueEmployeeStockPurchasePlanandStockOptionsExercised	2104000	USD
CY2017	chgg	Stock Issued During Period Value Employee Stock Purchase Planand Stock Options Exercised StockIssuedDuringPeriodValueEmployeeStockPurchasePlanandStockOptionsExercised	23656000	USD
CY2018	chgg	Stock Issued During Period Value Employee Stock Purchase Planand Stock Options Exercised StockIssuedDuringPeriodValueEmployeeStockPurchasePlanandStockOptionsExercised	29113000	USD
CY2017	chgg	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpense	-100000	USD
CY2017	chgg	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Withholding Tax TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsWithholdingTax	1200000	USD
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0001364954
CY2019Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	115871582	shares
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2018Q2	dei	Entity Public Float EntityPublicFloat	3021627153	USD
CY2018	dei	Entity Registrant Name EntityRegistrantName	CHEGG, INC
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	7049000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	8177000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	10855000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	12733000	USD
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	31074000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	34077000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	40430000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	55174000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-282000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1019000	USD
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	782845000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	818113000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	62444000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	41785000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	38359000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	52030000	USD
CY2016	us-gaap	Advertising Expense AdvertisingExpense	18400000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	16500000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	17900000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	41785000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	38359000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	52030000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	259000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	229000	USD
CY2016	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	0	USD
CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	0	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	10494000	USD
CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	12253000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3203000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	11991000	shares
CY2017Q4	us-gaap	Assets Assets	446930000	USD
CY2018Q4	us-gaap	Assets Assets	760938000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	228942000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	494925000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	132827000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	111716000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	111612000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	5052000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	5052000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	132716000	USD
CY2016	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
CY2017	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-626000	USD
CY2018	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	77329000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	126457000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	374664000	USD
CY2015Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	67809000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	77433000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	126963000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	375945000	USD
CY2016	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	9624000	USD
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CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	39230067	shares
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000.0	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	109667640	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	115500418	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	109667640	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	115500418	shares
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	110000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	116000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-42249000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-20389000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-15625000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	11700000	USD
CY2016	us-gaap	Cost Of Revenue CostOfRevenue	119601000	USD
CY2017	us-gaap	Cost Of Revenue CostOfRevenue	80175000	USD
CY2018	us-gaap	Cost Of Revenue CostOfRevenue	79996000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-18000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-103000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-91000	USD
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	959000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1523000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1374000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1262000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1520000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1210000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	321000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	100000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-73000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	503000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-992000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	155000	USD
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-106000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1199000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-11000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	445000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	282000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	220000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	2869000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	5943000	USD
CY2017Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	13440000	USD
CY2018Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	17418000	USD
CY2018	us-gaap	Deferred Revenue Period Increase Decrease DeferredRevenuePeriodIncreaseDecrease	3978000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	48000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	75000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	76000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	2075000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	92613000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	130128000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1430000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	4284000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	71653000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	106659000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	960000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2905000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	14430000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	13083000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	1665000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	1661000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	91183000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	125844000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1439000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1659000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2869000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	5943000	USD
CY2016	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	900000	USD
CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1100000	USD
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1400000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	9900000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	13800000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	16800000	USD
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.07
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.06
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.11
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.03
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.02
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.03
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.12
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.05
CY2016	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.47
CY2017	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.20
CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.13
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.07
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.06
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.11
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.03
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.02
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.03
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.12
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.04
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.042
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.098
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.106
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.292
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	1.266
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-2.575
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-2.202
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.000
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.003
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.038
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.030
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	-0.002
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	-0.011
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	-0.044
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.091
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.382
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	1.787
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.007
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.004
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.021
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.017
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.083
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.148
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.004
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.078
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.267
CY2016	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	0	USD
CY2017	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	0	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	0	USD
CY2018Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	10000000	USD
CY2017	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P57M
CY2018	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P61M
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	20671000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	27182000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	2409000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	6448000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	2276000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	2943000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	3423000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	4816000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	22315000	USD
CY2016	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	670000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	4766000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	0	USD
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-1368000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-93000	USD
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	55372000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	64411000	USD
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	77714000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	116239000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	125272000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	149524000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	9024000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	24673000	USD
CY2017	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	9000	USD
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-421000	USD
CY2016	us-gaap	Gross Profit GrossProfit	134489000	USD
CY2017Q1	us-gaap	Gross Profit GrossProfit	41206000	USD
CY2017Q2	us-gaap	Gross Profit GrossProfit	39275000	USD
CY2017Q3	us-gaap	Gross Profit GrossProfit	40284000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	54126000	USD
CY2017	us-gaap	Gross Profit GrossProfit	174891000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	56725000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	56438000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	54319000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	73606000	USD
CY2018	us-gaap	Gross Profit GrossProfit	241088000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-42687000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-20983000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-18617000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	2149000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	2502000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	5159000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-40538000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-18481000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-13458000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1707000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1802000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1430000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	1094000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	1790000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	2097000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-728000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	2649000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	893000	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	127000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	175000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1538000	USD
CY2016	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-9499000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	2087000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	3838000	USD
CY2016	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-272000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-1396000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	3978000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-761000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1049000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-48000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	189000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	15000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2539000	USD
CY2016	us-gaap	Increase Decrease In Prepaid Expenses Other IncreaseDecreaseInPrepaidExpensesOther	-10039000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Expenses Other IncreaseDecreaseInPrepaidExpensesOther	-13550000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Expenses Other IncreaseDecreaseInPrepaidExpensesOther	4921000	USD
CY2017Q4	us-gaap	Indefinite Lived Trade Names IndefiniteLivedTradeNames	3600000	USD
CY2018Q4	us-gaap	Indefinite Lived Trade Names IndefiniteLivedTradeNames	3600000	USD
CY2017Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	41824000	USD
CY2018Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	53097000	USD
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	21153000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	25915000	USD
CY2016	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-171000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-74000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-11225000	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	50000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	85000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	605000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	55868000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	350304000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	446930000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	760938000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	51563000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	59672000	USD
CY2017Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	4305000	USD
CY2018Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	290632000	USD
CY2017Q4	us-gaap	Long Term Investments LongTermInvestments	20305000	USD
CY2018Q4	us-gaap	Long Term Investments LongTermInvestments	16052000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-8675000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	134214000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	256418000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5963000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-136234000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-82549000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	24262000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	51550000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	75113000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	-42245000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	-6401000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	-6025000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	-11516000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	3659000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-20283000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	-2617000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	-3909000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	-13709000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	5347000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-14888000	USD
CY2016	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	2333000	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	3573000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	1210000	USD
CY2016	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-468000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	486000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-7238000	USD
CY2018	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2016	us-gaap	Operating Expenses OperatingExpenses	174559000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	193858000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	247308000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	-40070000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	-18967000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-6220000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	23456000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	5222000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	3421000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	3999000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	4775000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	5251000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	788000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1900000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2700000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	3200000	USD
CY2016	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	105000	USD
CY2017	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	0	USD
CY2018	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	0	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	7845000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	9510000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	3626000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	5725000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	3765000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	14618000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	25000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-187000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	76000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-29000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	81000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-813000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-106000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-737000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-4000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-106000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-737000	USD
CY2016	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	14520000	USD
CY2017	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	19337000	USD
CY2016	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	0	USD
CY2018	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	22805000	USD
CY2017Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	15540000	USD
CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	14047000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	4305000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	6964000	USD
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-47000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-68000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-65000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-297000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	560000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3987000	USD
CY2017Q4	us-gaap	Payables To Customers PayablesToCustomers	8001000	USD
CY2018Q4	us-gaap	Payables To Customers PayablesToCustomers	6420000	USD
CY2016	us-gaap	Payments For Previous Acquisition PaymentsForPreviousAcquisition	0	USD
CY2017	us-gaap	Payments For Previous Acquisition PaymentsForPreviousAcquisition	16939000	USD
CY2018	us-gaap	Payments For Previous Acquisition PaymentsForPreviousAcquisition	0	USD
CY2017	us-gaap	Payments For Restructuring PaymentsForRestructuring	1068000	USD
CY2018	us-gaap	Payments For Restructuring PaymentsForRestructuring	388000	USD
CY2016	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	10779000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	20115000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	49089000	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	27055000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	14931000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	34650000	USD
CY2016	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1020000	USD
CY2017	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	0	USD
CY2018	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	10000000	USD
CY2016	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	7633000	USD
CY2017	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	128247000	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	146856000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	24689000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	26142000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	31223000	USD
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2017Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	2043000	USD
CY2018Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	4673000	USD
CY2017	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	0	USD
CY2018	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	335618000	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	147609000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2016	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	6844000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	9750000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	138380000	USD
CY2016	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	22830000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	16393000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	1800000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	87923000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	115078000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	47493000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	59904000	USD
CY2017Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	4219000	USD
CY2018Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	3785000	USD
CY2016	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	66331000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	81926000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	114291000	USD
CY2016Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	84000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	84000	USD
CY2016Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	104000	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	422000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1197000	USD
CY2016	us-gaap	Restructuring Charges RestructuringCharges	-423000	USD
CY2017Q1	us-gaap	Restructuring Charges RestructuringCharges	900000	USD
CY2017Q2	us-gaap	Restructuring Charges RestructuringCharges	59000	USD
CY2017Q3	us-gaap	Restructuring Charges RestructuringCharges	64000	USD
CY2017Q4	us-gaap	Restructuring Charges RestructuringCharges	24000	USD
CY2017	us-gaap	Restructuring Charges RestructuringCharges	1047000	USD
CY2018Q1	us-gaap	Restructuring Charges RestructuringCharges	200000	USD
CY2018Q2	us-gaap	Restructuring Charges RestructuringCharges	15000	USD
CY2018Q3	us-gaap	Restructuring Charges RestructuringCharges	17000	USD
CY2018Q4	us-gaap	Restructuring Charges RestructuringCharges	300000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	589000	USD
CY2016Q4	us-gaap	Restructuring Reserve RestructuringReserve	306000	USD
CY2017Q4	us-gaap	Restructuring Reserve RestructuringReserve	265000	USD
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	448000	USD
CY2017	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	20000	USD
CY2018	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	18000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-391611000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-406576000	USD
CY2016	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	254090000	USD
CY2017Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	62602000	USD
CY2017Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	56317000	USD
CY2017Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	62640000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	255066000	USD
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	76949000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	74222000	USD
CY2017Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	73507000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	74237000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	95676000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	321084000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	20600000	USD
CY2016	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	53949000	USD
CY2017	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	51240000	USD
CY2018	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	54714000	USD
CY2017Q4	us-gaap	Senior Long Term Notes SeniorLongTermNotes	0	USD
CY2018Q4	us-gaap	Senior Long Term Notes SeniorLongTermNotes	283668000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	41785000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	38359000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	52030000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	600000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	16800000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	57200000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	59318983	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	90848450	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	8066846	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4776481	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.97
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.40
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.34
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y7M21D
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y3M
CY2017Q4	us-gaap	Short Term Investments ShortTermInvestments	81742000	USD
CY2018Q4	us-gaap	Short Term Investments ShortTermInvestments	93345000	USD
CY2017	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	377530	shares
CY2018	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	253301	shares
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	3290365	shares
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	147609000	USD
CY2016	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	-10776000	USD
CY2017	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	-20112000	USD
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	-49086000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	20000000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	231075000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	221939000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	391062000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	410634000	USD
CY2017Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	3337000	USD
CY2018Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	3864000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4849000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4882000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5772000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	8771000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	77000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	-74000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	50000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	855000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	101000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	569000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	32000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	172000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	149000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	800000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	73000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	18000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	200000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	700000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	595000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	978000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3112000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	478000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	280000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	758000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	76000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	169000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	103000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1200000	USD
CY2017	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-18900000	USD
CY2018	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	34700000	USD
CY2017Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92830000	shares
CY2017Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	95047000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	103041000	shares
CY2017Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	121557000	shares
CY2018Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	110904000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112738000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	114184000	shares
CY2018Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	125610000	shares
CY2016	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	90534000	shares
CY2017	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	100022000	shares
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	113251000	shares
CY2017Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	92830000	shares
CY2017Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	95047000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	103041000	shares
CY2017Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	108968000	shares
CY2018Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	110904000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112738000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	114184000	shares
CY2018Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	115123000	shares
CY2018	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Concentration of Credit Risk<br clear="none"/> <br clear="none"/></font></div><div style="line-height:120%;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash and cash equivalents, restricted cash, and marketable securities invested in highly liquid instruments in accordance with our investment policy. We place the majority of our cash and cash equivalents and restricted cash with a financial institution in the United States that we believe to be of high credit quality, and accordingly minimal credit risk exists with respect to these instruments. Certain of our cash balances held with a financial institution are in excess of Federal Deposit Insurance Corporation limits. Our investment portfolio consists of investment-grade marketable securities diversified among security types, industries and issuers. Our investments were held and managed by a recognized financial institution that followed our investment policy with the main objective of preserving capital and maintaining liquidity.<br clear="none"/> <br clear="none"/></font></div><div style="line-height:120%;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">C</font></div></div>
CY2018	us-gaap	Revenue Recognition Deferred Revenue RevenueRecognitionDeferredRevenue	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Revenue Recognition and Deferred Revenue<br clear="none"/> <br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We recognize revenues from our Chegg Services and Required Materials offerings when control of the goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services.</font></div><div style="line-height:120%;text-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We determine revenue recognition through the following steps:</font></div><div style="line-height:120%;text-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;padding-left:48px;text-align:left;text-indent:36px;"><font style="text-align:left;font-family:inherit;font-size:10pt;padding-right:12px;">•</font><font style="font-family:inherit;font-size:10pt;">Identification of the contract, or contracts, with a customer</font></div><div style="line-height:120%;padding-left:48px;text-align:left;text-indent:36px;"><font style="text-align:left;font-family:inherit;font-size:10pt;padding-right:12px;">•</font><font style="font-family:inherit;font-size:10pt;">Identification of the performance obligations in the contract</font></div><div style="line-height:120%;padding-left:48px;text-align:left;text-indent:36px;"><font style="text-align:left;font-family:inherit;font-size:10pt;padding-right:12px;">•</font><font style="font-family:inherit;font-size:10pt;">Determination of the transaction price</font></div><div style="line-height:120%;padding-left:48px;text-align:left;text-indent:36px;"><font style="text-align:left;font-family:inherit;font-size:10pt;padding-right:12px;">•</font><font style="font-family:inherit;font-size:10pt;">Allocation of the transaction price to the performance obligations in the contract</font></div><div style="line-height:120%;padding-left:48px;text-align:left;text-indent:36px;"><font style="text-align:left;font-family:inherit;font-size:10pt;padding-right:12px;">•</font><font style="font-family:inherit;font-size:10pt;">Recognition of revenue when, or as, we satisfy a performance obligation</font></div><div style="line-height:120%;text-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We generate revenues from our Chegg Services product line including </font><font style="font-family:inherit;font-size:10pt;">Chegg Study, Chegg Writing, Chegg Tutors, and Chegg Math Solver</font><font style="font-family:inherit;font-size:10pt;">. </font><font style="font-family:inherit;font-size:10pt;">Chegg Services are offered to students primarily through weekly or monthly subscriptions, and we recognize revenues ratably over the respective subscription period.</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;background-color:#ffffff;">Revenues from our</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">Required Materials product line includes </font><font style="font-family:inherit;font-size:10pt;">a revenue share on the rental and sale of print textbooks, as well as revenues from eTextbooks</font><font style="font-family:inherit;font-size:10pt;">. </font><font style="font-family:inherit;font-size:10pt;">The revenue share on the rental and sale of print textbooks is recognized immediately when a book ships to the student. Revenues from the rental of eTextbooks is recognized ratably over the contractual period, generally two to five months. Revenues from the sale of eTextbooks is recognized immediately when the eTextbook sale occurs.</font><font style="font-family:inherit;font-size:10pt;"> Revenues are presented net of sales tax collected from customers to be remitted to governmental authorities and net of allowances for estimated cancellations and customer returns, which are based on historical data. Customer refunds from cancellations and returns are recorded as a reduction to revenues.</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Some of our customer arrangements include multiple performance obligations. We have determined these performance obligations qualify as distinct performance obligations, as the customer can benefit from the service on its own or together with other resources that are readily available to the customer and our promise to transfer the service is separately identifiable from other promises in the contract. For these arrangements that contain multiple performance obligations, we allocate the transaction price based on the relative standalone selling price method by comparing the standalone selling price (SSP) of each distinct performance obligation to the total value of the contract. We determine the SSP based on our historical pricing and discounting practices for the distinct performance obligation when sold separately. If the SSP is not directly observable, we estimate the SSP by considering information such as market conditions, and information about the customer. </font><font style="font-family:inherit;font-size:10pt;">Additionally, we limit the amount of revenues recognized for delivered promises to the amount that is not contingent on future delivery of services or other future performance obligations.</font></div><div style="line-height:120%;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Our agreements with print textbook partners may include an amount of variable consideration in addition to a fixed revenue share that we earn. This variable consideration can either increase or decrease the total transaction price depending on the nature of the variable consideration. We estimate the amount of variable consideration that we will earn at the inception of the contract, adjusted during each period, and include an estimated amount each period.</font></div><div style="line-height:120%;text-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">For sales of third-party products, we evaluate whether we are acting as a principal or an agent, and therefore would record the gross sales amount as revenues and related costs or the net amount earned as a revenue share from the sale of third-party products. Our determination is based on our evaluation of whether we control the specified goods or services prior to transferring them to the customer.</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">In relation to print textbook rental and sale agreements with our partners, we recognize revenues on a net basis based on our role in the transaction as an agent</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">as we have concluded that we do not control the use of the print textbooks, and therefore record only the revenue share we earn upon the shipment of a print textbook to a student. For the rental or sale of eTextbooks, we have concluded that we control the service, therefore we recognize revenue and cost of revenue on a gross basis ratably over the term the student has access to the eTextbook.</font></div><div style="line-height:120%;text-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Contract assets are contained within other current assets on our consolidated balance sheets. Contract assets represent the goods or services that we have transferred to a customer before invoicing the customer. Contract receivables are contained within accounts receivable, net on our consolidated balance sheets and represent unconditional consideration that will be received solely due to the passage of time. Contract liabilities are contained within deferred revenue on our consolidated balance sheets. Deferred revenue primarily consists of advanced payments from students related to rental and subscription performance obligations that have not been satisfied and estimated variable consideration. Deferred revenue related to rental and subscription performance obligations is recognized as revenues ratably over the term for subscriptions or when the services are provided and all other revenue recognition criteria have been met. Deferred revenue related to variable consideration is recognized as revenues during each reporting period based on the estimated amount we believe we will earn over the life of the contract.</font></div><div style="line-height:120%;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;"></font></div></div>
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with generally accepted accounting principles in the United States (U.S. GAAP) requires management to make estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities; the disclosure of contingent liabilities at the date of the financial statements; and the reported amounts of revenues and expenses during the reporting periods. Significant estimates, assumptions, and judgments are used for, but not limited to: revenue recognition, recoverability of accounts receivable, restructuring charges (credits), share-based compensation expense including estimated forfeitures, accounting for income taxes, useful lives assigned to long-lived assets for depreciation and amortization, impairment of goodwill and long-lived assets, the valuation of acquired intangible assets, and the valuation of our convertible senior notes. We base our estimates on historical experience, knowledge of current business conditions, and various other factors we believe to be reasonable under the circumstances. These estimates are based on management’s knowledge about current events and expectations about actions we may undertake in the future. Actual results could differ from these estimates, and such differences could be material to our financial position and results of operations.</font></div></div>

Files In Submission

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0001364954-19-000027.txt	Edgar Link	pending
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$CHGG
CHEGG, INC Stock $chgg

2017 Q4 Form 10-K Financial Statement

#000136495419000027 Filed on February 25, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CHGG CHEGG, INC Stock $chgg

2017 Q4 Form 10-K Financial Statement

#000136495419000027 Filed on February 25, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CHGG
CHEGG, INC Stock $chgg