$CHGG
CHEGG, INC Stock $chgg

$chgg Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-K Financial Statement

#000136495418000039 Filed on February 26, 2018

Income Statement

Concept	2017 Q4	2017 Q3	2017
Revenue	$73.51M	$62.64M	$255.1M
YoY Change	16.57%	-12.2%	0.38%
Cost Of Revenue	$19.40M	$22.36M	$80.18M
YoY Change	-5.83%	-42.23%	-32.96%
Gross Profit	$54.13M	$40.28M	$174.9M
YoY Change	27.4%	23.4%	30.04%
Gross Profit Margin	73.63%	64.31%	68.57%
Selling, General & Admin	$28.20M	$31.50M	$115.7M
YoY Change	5.62%	8.03%	5.79%
% of Gross Profit	52.1%	78.2%	66.13%
Research & Development	$22.80M	$19.88M	$81.93M
YoY Change	33.33%	22.38%	23.51%
% of Gross Profit	42.12%	49.34%	46.84%
Depreciation & Amortization	$5.000M	$5.200M	$13.80M
YoY Change	2.04%	-7.14%	39.39%
% of Gross Profit	9.24%	12.91%	7.89%
Operating Expenses	$51.10M	$51.44M	$193.9M
YoY Change	16.67%	7.23%	11.06%
Operating Profit	$3.026M	-$11.16M	-$18.97M
YoY Change	-330.11%	-27.21%	-52.67%
Interest Expense	$0.00	$0.00	-$100.0K
YoY Change			-50.0%
% of Operating Profit	0.0%
Other Income/Expense, Net	$500.0K	$242.0K	$486.0K
YoY Change	-350.0%	-235.96%	-203.85%
Pretax Income	$3.500M	-$10.92M	-$20.98M
YoY Change	-391.67%	-29.6%	-50.84%
Income Tax	$100.0K	$598.0K	$1.802M
% Of Pretax Income	2.86%
Net Earnings	$3.659M	-$11.52M	-$20.28M
YoY Change	-345.74%	-28.31%	-51.99%
Net Earnings / Revenue	4.98%	-18.38%	-7.95%
Basic Earnings Per Share	$0.03	-$0.11
Diluted Earnings Per Share	$0.03	-$0.11	-$203.0K
COMMON SHARES
Basic Shares Outstanding	109.0M shares	103.0M shares
Diluted Shares Outstanding	121.6M shares	103.0M shares

Balance Sheet

Concept	2017 Q4	2017 Q3	2017
SHORT-TERM ASSETS
Cash & Short-Term Investments	$208.2M	$203.1M	$208.2M
YoY Change	169.34%	125.17%	169.34%
Cash & Equivalents	$126.5M	$122.2M	$126.5M
Short-Term Investments	$81.70M	$80.90M	$81.70M
Other Short-Term Assets	$7.845M	$23.96M	$9.800M
YoY Change	-62.67%	-32.65%	-60.64%
Inventory
Prepaid Expenses	$2.043M	$3.865M
Receivables	$10.86M	$9.843M	$10.90M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$228.9M	$240.8M	$228.9M
YoY Change	105.56%	72.89%	105.48%
LONG-TERM ASSETS
Property, Plant & Equipment	$47.49M	$45.08M	$47.50M
YoY Change	34.52%	46.52%	25.33%
Goodwill	$125.3M	$116.2M
YoY Change	7.77%	1.09%
Intangibles	$21.15M	$16.60M
YoY Change	1.95%	-23.36%
Long-Term Investments	$20.30M	$17.00M	$20.30M
YoY Change
Other Assets	$3.765M	$4.419M	$3.800M
YoY Change	-14.66%	-20.59%	-13.64%
Total Long-Term Assets	$218.0M	$199.3M	$218.0M
YoY Change	21.59%	12.67%	21.58%
TOTAL ASSETS
Total Short-Term Assets	$228.9M	$240.8M	$228.9M
Total Long-Term Assets	$218.0M	$199.3M	$218.0M
Total Assets	$446.9M	$440.2M	$446.9M
YoY Change	53.77%	39.2%	53.73%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$7.049M	$2.109M	$7.000M
YoY Change	36.21%	-73.61%	34.62%
Accrued Expenses	$31.07M	$41.94M	$27.70M
YoY Change	-29.89%	-28.96%	-33.09%
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	$51.60M
YoY Change	-19.85%	-32.03%	-19.75%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$4.305M	$5.200M	$4.300M
YoY Change	-2.16%	26.83%	-2.27%
Total Long-Term Liabilities	$4.305M	$5.243M	$4.300M
YoY Change	-1.78%	28.66%	-2.27%
TOTAL LIABILITIES
Total Short-Term Liabilities	$51.56M	$65.96M	$51.60M
Total Long-Term Liabilities	$4.305M	$5.243M	$4.300M
Total Liabilities	$55.87M	$71.20M	$55.90M
YoY Change	-18.69%	-29.58%	-18.63%
SHAREHOLDERS EQUITY
Retained Earnings	-$391.6M	-$395.3M
YoY Change	5.46%	6.88%
Common Stock	$783.0M	$764.2M
YoY Change	31.93%	30.61%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$391.1M	$369.0M	$391.1M
YoY Change
Total Liabilities & Shareholders Equity	$446.9M	$440.2M	$446.9M
YoY Change	53.77%	39.2%	53.73%

Cashflow Statement

Concept	2017 Q4	2017 Q3	2017
OPERATING ACTIVITIES
Net Income	$3.659M	-$11.52M	-$20.28M
YoY Change	-345.74%	-28.31%	-51.99%
Depreciation, Depletion And Amortization	$5.000M	$5.200M	$13.80M
YoY Change	2.04%	-7.14%	39.39%
Cash From Operating Activities	$21.80M	$13.30M	$51.55M
YoY Change	-440.63%	-64.81%	112.47%
INVESTING ACTIVITIES
Capital Expenditures	-$6.200M	-$7.400M	$26.14M
YoY Change	-11.43%	94.74%	5.89%
Acquisitions			$14.93M
YoY Change			-44.81%
Other Investing Activities	-$19.10M	-$97.90M	-$110.1M
YoY Change	-3283.33%	-1441.1%	-661.73%
Cash From Investing Activities	-$25.30M	-$105.3M	-$136.2M
YoY Change	295.31%	-3108.57%	2184.66%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$147.6M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	7.800M	148.2M	$134.2M
YoY Change	-1075.0%	-18625.0%	-1647.14%
NET CHANGE
Cash From Operating Activities	21.80M	13.30M	$51.55M
Cash From Investing Activities	-25.30M	-105.3M	-$136.2M
Cash From Financing Activities	7.800M	148.2M	$134.2M
Net Change In Cash	4.300M	56.20M	$49.53M
YoY Change	-131.62%	38.77%	414.65%
FREE CASH FLOW
Cash From Operating Activities	$21.80M	$13.30M	$51.55M
Capital Expenditures	-$6.200M	-$7.400M	$26.14M
Free Cash Flow	$28.00M	$20.70M	$25.41M
YoY Change	4566.67%	-50.24%	-6050.35%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2016Q4	chgg	Accrued Deferred Cash Consideration Acquisition AccruedDeferredCashConsiderationAcquisition	17378000	USD
CY2017Q4	chgg	Accrued Deferred Cash Consideration Acquisition AccruedDeferredCashConsiderationAcquisition	0	USD
CY2016Q4	chgg	Accrued Purchases Of Long Lived Assets AccruedPurchasesOfLongLivedAssets	2333000	USD
CY2017Q4	chgg	Accrued Purchases Of Long Lived Assets AccruedPurchasesOfLongLivedAssets	3573000	USD
CY2017	chgg	Available For Sale Securities Weighted Average Maturity AvailableForSaleSecuritiesWeightedAverageMaturity	P5M
CY2017Q4	chgg	Availableforsale Securities Debt Maturities Year One Through Two Amortized Cost Basis AvailableforsaleSecuritiesDebtMaturitiesYearOneThroughTwoAmortizedCostBasis	20405000	USD
CY2017Q4	chgg	Availableforsale Securities Debt Maturities Year One Through Two Fair Value AvailableforsaleSecuritiesDebtMaturitiesYearOneThroughTwoFairValue	20305000	USD
CY2016Q4	chgg	Deferred Tax Assets Property Plantand Equipment Inventoryand Intangible Assets DeferredTaxAssetsPropertyPlantandEquipmentInventoryandIntangibleAssets	5168000	USD
CY2017Q4	chgg	Deferred Tax Assets Property Plantand Equipment Inventoryand Intangible Assets DeferredTaxAssetsPropertyPlantandEquipmentInventoryandIntangibleAssets	3905000	USD
CY2015	chgg	Depreciation Textbook Library DepreciationTextbookLibrary	43553000	USD
CY2016	chgg	Depreciation Textbook Library DepreciationTextbookLibrary	9267000	USD
CY2017	chgg	Depreciation Textbook Library DepreciationTextbookLibrary	0	USD
CY2016	chgg	Employee Stock Purchase Plan Espp Weighted Average Purchase Priceof Shares Purchased EmployeeStockPurchasePlanESPPWeightedAveragePurchasePriceofSharesPurchased	3.76
CY2017	chgg	Employee Stock Purchase Plan Espp Weighted Average Purchase Priceof Shares Purchased EmployeeStockPurchasePlanESPPWeightedAveragePurchasePriceofSharesPurchased	7.88
CY2017	chgg	Finite Lived And Indefinite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedAndIndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	6000	USD
CY2015	chgg	Issuance Of Common Stock And Options Related To Acquisition IssuanceOfCommonStockAndOptionsRelatedToAcquisition	825000	USD
CY2016	chgg	Issuance Of Common Stock And Options Related To Acquisition IssuanceOfCommonStockAndOptionsRelatedToAcquisition	0	USD
CY2017	chgg	Issuance Of Common Stock And Options Related To Acquisition IssuanceOfCommonStockAndOptionsRelatedToAcquisition	0	USD
CY2015	chgg	Loss From Write Offs Of Textbooks LossFromWriteOffsOfTextbooks	5297000	USD
CY2016	chgg	Loss From Write Offs Of Textbooks LossFromWriteOffsOfTextbooks	1090000	USD
CY2017	chgg	Loss From Write Offs Of Textbooks LossFromWriteOffsOfTextbooks	314000	USD
CY2015	chgg	Payments For Repurchase Of Common Stock And Vested Stock Options PaymentsForRepurchaseOfCommonStockAndVestedStockOptions	2263000	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
CY2015	chgg	Payments To Acquire Textbooks PaymentsToAcquireTextbooks	32297000	USD
CY2016	chgg	Payments To Acquire Textbooks PaymentsToAcquireTextbooks	886000	USD
CY2017	chgg	Payments To Acquire Textbooks PaymentsToAcquireTextbooks	0	USD
CY2015	chgg	Proceeds From Issuance Of Employee Stock Purchase Plan ProceedsFromIssuanceOfEmployeeStockPurchasePlan	13696000	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
CY2015	chgg	Proceeds From Sale Of Textbooks ProceedsFromSaleOfTextbooks	38260000	USD
CY2016	chgg	Proceeds From Sale Of Textbooks ProceedsFromSaleOfTextbooks	25646000	USD
CY2017	chgg	Proceeds From Sale Of Textbooks ProceedsFromSaleOfTextbooks	6943000	USD
CY2015	chgg	Rental Revenue Net RentalRevenueNet	120365000	USD
CY2016	chgg	Rental Revenue Net RentalRevenueNet	39837000	USD
CY2017	chgg	Rental Revenue Net RentalRevenueNet	0	USD
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CY2015	chgg	Stock Issued During Period Value Common Warrants Exercised StockIssuedDuringPeriodValueCommonWarrantsExercised	0	USD
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CY2015	chgg	Stock Issued During Period Value Employee Stock Purchase Planand Stock Options Exercised StockIssuedDuringPeriodValueEmployeeStockPurchasePlanandStockOptionsExercised	13696000	USD
CY2016	chgg	Stock Issued During Period Value Employee Stock Purchase Planand Stock Options Exercised StockIssuedDuringPeriodValueEmployeeStockPurchasePlanandStockOptionsExercised	2104000	USD
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CY2017	dei	Amendment Flag AmendmentFlag	false
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CY2017	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2017	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
CY2017	dei	Document Period End Date DocumentPeriodEndDate	2017-12-31
CY2017	dei	Document Type DocumentType	10-K
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CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
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CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-176000	USD
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CY2015	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	38775000	USD
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CY2017Q4	us-gaap	Customer Refund Liability Current CustomerRefundLiabilityCurrent	2457000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	484000	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
CY2015	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-102000	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
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	438000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	445000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	282000	USD
CY2016Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1413000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	2869000	USD
CY2016Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	14836000	USD
CY2017Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	13440000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	56000	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
CY2016Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	1085000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	0	USD
CY2016Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	110301000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	92613000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	256000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1430000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	73708000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	71653000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1407000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	960000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	23864000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	14430000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	5069000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	1665000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	110045000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	91183000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1157000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1439000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1413000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2869000	USD
CY2015	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	800000	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
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6800000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	9900000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	13800000	USD
CY2015	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	98162000	USD
CY2016	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	28637000	USD
CY2017	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	0	USD
CY2016Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.18
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.10
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.17
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.02
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
CY2015	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.68
CY2016	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.47
CY2017	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.20
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
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.026
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.042
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.098
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.331
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.000
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.002
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	-0.002
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.070
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.012
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.037
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.014
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
CY2015	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	0	USD
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
CY2017Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	100000	USD
CY2016	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P51M
CY2017	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P57M
CY2016Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	16170000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	21701000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	2428000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	5311000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1075000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1518000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2874000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	4347000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	17553000	USD
CY2015	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	4326000	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
CY2015	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-967000	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
CY2015	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	0	USD
CY2016	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	11000	USD
CY2017	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	-21000	USD
CY2015	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	45209000	USD
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	55372000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	64411000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	91301000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	116239000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	125272000	USD
CY2016	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	24938000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	9024000	USD
CY2016	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	0	USD
CY2017	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	9000	USD
CY2015	us-gaap	Gross Profit GrossProfit	111524000	USD
CY2016Q1	us-gaap	Gross Profit GrossProfit	27731000	USD
CY2016Q2	us-gaap	Gross Profit GrossProfit	31629000	USD
CY2016Q3	us-gaap	Gross Profit GrossProfit	32644000	USD
CY2016Q4	us-gaap	Gross Profit GrossProfit	42485000	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
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-59376000	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
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1645000	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
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-57731000	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
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1479000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1707000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1802000	USD
CY2015	us-gaap	Income Taxes Paid IncomeTaxesPaid	827000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	1094000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	1790000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-4236000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-728000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	2649000	USD
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-712000	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	127000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	175000	USD
CY2015	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	5237000	USD
CY2016	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-9499000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	2087000	USD
CY2015	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-9620000	USD
CY2016	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-272000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-1396000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	592000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1437000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-647000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-346000	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
CY2015	us-gaap	Increase Decrease In Prepaid Expenses Other IncreaseDecreaseInPrepaidExpensesOther	27878000	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
CY2016Q4	us-gaap	Indefinite Lived Trade Names IndefiniteLivedTradeNames	3600000	USD
CY2017Q4	us-gaap	Indefinite Lived Trade Names IndefiniteLivedTradeNames	3600000	USD
CY2016Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	36918000	USD
CY2017Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	42854000	USD
CY2016Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	20748000	USD
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	21153000	USD
CY2015	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-247000	USD
CY2016	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-171000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-74000	USD
CY2015	us-gaap	Interest Paid InterestPaid	95000	USD
CY2016	us-gaap	Interest Paid InterestPaid	50000	USD
CY2017	us-gaap	Interest Paid InterestPaid	85000	USD
CY2016Q4	us-gaap	Liabilities Liabilities	68713000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	55868000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	290652000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	446930000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	64330000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	51563000	USD
CY2016Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	4383000	USD
CY2017Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	4305000	USD
CY2016Q4	us-gaap	Long Term Investments LongTermInvestments	0	USD
CY2017Q4	us-gaap	Long Term Investments LongTermInvestments	20305000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2723000	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
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	8271000	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
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-82000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	24938000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	51148000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	-59210000	USD
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	-15685000	USD
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	-9008000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	-16063000	USD
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	-1489000	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
CY2015	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	1771000	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
CY2015	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-31000	USD
CY2016	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-468000	USD
CY2017	us-gaap	Payments For Restructuring PaymentsForRestructuring	1068000	USD
CY2015	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	8710000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	486000	USD
CY2017	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2017	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2015	us-gaap	Operating Expenses OperatingExpenses	169224000	USD
CY2016	us-gaap	Operating Expenses OperatingExpenses	174559000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	193858000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	-57700000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	-40070000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	-18967000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	6626000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	2934000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	230000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	485000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	939000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	2038000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	0	USD
CY2015	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2500000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1900000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2700000	USD
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	21014000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	7845000	USD
CY2016Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	2255000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	3626000	USD
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	4412000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	3765000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-8000	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
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-151000	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
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-159000	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
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-159000	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
CY2015	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	11511000	USD
CY2016	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	14520000	USD
CY2017	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	19337000	USD
CY2016Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	11103000	USD
CY2017Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	13706000	USD
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	216000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-297000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	560000	USD
CY2016Q4	us-gaap	Payables To Customers PayablesToCustomers	8237000	USD
CY2017Q4	us-gaap	Payables To Customers PayablesToCustomers	8001000	USD
CY2015	us-gaap	Payments For Previous Acquisition PaymentsForPreviousAcquisition	0	USD
CY2016	us-gaap	Payments For Previous Acquisition PaymentsForPreviousAcquisition	0	USD
CY2017	us-gaap	Payments For Previous Acquisition PaymentsForPreviousAcquisition	16939000	USD
CY2016	us-gaap	Payments For Restructuring PaymentsForRestructuring	1789000	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
CY2015	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	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
CY2015	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	2019000	USD
CY2016	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1020000	USD
CY2017	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	0	USD
CY2015	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	35610000	USD
CY2016	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	7633000	USD
CY2017	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	128247000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	8253000	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
CY2016Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2016Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2016Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2016Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2016Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2016Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	2579000	USD
CY2017Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	2043000	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	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
CY2015	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	47840000	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
CY2015	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	350000	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
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	63136000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	87923000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	35305000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	47493000	USD
CY2015	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-77000	USD
CY2016	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	58000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	47000	USD
CY2016Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	18759000	USD
CY2017Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	4219000	USD
CY2015	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	59391000	USD
CY2016	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	66331000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	81926000	USD
CY2015	us-gaap	Restructuring Charges RestructuringCharges	4868000	USD
CY2016Q1	us-gaap	Restructuring Charges RestructuringCharges	-44000	USD
CY2016Q2	us-gaap	Restructuring Charges RestructuringCharges	-200000	USD
CY2016Q3	us-gaap	Restructuring Charges RestructuringCharges	-100000	USD
CY2016Q4	us-gaap	Restructuring Charges RestructuringCharges	-100000	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
CY2015Q4	us-gaap	Restructuring Reserve RestructuringReserve	2518000	USD
CY2016Q4	us-gaap	Restructuring Reserve RestructuringReserve	306000	USD
CY2017	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	20000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-371328000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-391611000	USD
CY2015	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	47913000	USD
CY2016	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	31854000	USD
CY2017	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	0	USD
CY2015	us-gaap	Sales Revenue Net SalesRevenueNet	301373000	USD
CY2016Q1	us-gaap	Sales Revenue Net SalesRevenueNet	66654000	USD
CY2016Q2	us-gaap	Sales Revenue Net SalesRevenueNet	53036000	USD
CY2016Q3	us-gaap	Sales Revenue Net SalesRevenueNet	71343000	USD
CY2016Q4	us-gaap	Sales Revenue Net SalesRevenueNet	63057000	USD
CY2016	us-gaap	Sales Revenue Net SalesRevenueNet	254090000	USD
CY2017Q1	us-gaap	Sales Revenue Net SalesRevenueNet	62602000	USD
CY2017Q2	us-gaap	Sales Revenue Net SalesRevenueNet	56317000	USD
CY2017Q3	us-gaap	Sales Revenue Net SalesRevenueNet	62640000	USD
CY2017Q4	us-gaap	Sales Revenue Net SalesRevenueNet	73507000	USD
CY2017	us-gaap	Sales Revenue Net SalesRevenueNet	255066000	USD
CY2015	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	133095000	USD
CY2016	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	182399000	USD
CY2017	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	255066000	USD
CY2015	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	64082000	USD
CY2016	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	53949000	USD
CY2017	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	51240000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	38775000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	41785000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	38359000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	8033749	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	8.98
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	3200000	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 Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	6608611	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	16800000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	364375	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	59318983	USD
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	11333624	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	8066846	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.60
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	8.97
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	59299650	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	8064829	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	8.97
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	7.13
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	12.23
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0.00
CY2017Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	59002312	USD
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P4Y7M17D
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y2M19D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y7M21D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P4Y7M21D
CY2016Q4	us-gaap	Short Term Investments ShortTermInvestments	0	USD
CY2017Q4	us-gaap	Short Term Investments ShortTermInvestments	81742000	USD
CY2016	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	467979	shares
CY2017	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	377530	shares
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2902403	shares
CY2015	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	825000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	147609000	USD
CY2015	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	-8710000	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
CY2015	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1185000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	247043000	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
CY2016Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	2927000	USD
CY2017Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	3337000	USD
CY2016Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	6000000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4272000	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
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	-24000	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
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	416000	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
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	61000	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
CY2016Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	600000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	800000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	100000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	200000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	948000	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
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	82000	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
CY2015	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	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
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1200000	USD
CY2016	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	11800000	USD
CY2017	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-18900000	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
CY2015	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	86818000	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
CY2016Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	89118000	shares
CY2016Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	90416000	shares
CY2016Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91059000	shares
CY2016Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91526000	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
CY2017	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 financial institutions 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 financial institutions 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 recognized financial institutions 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>
CY2017	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-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Revenues are recognized when the four basic criteria for revenue recognition have been met as follows: persuasive evidence of an arrangement exists, delivery has occurred and title has transferred, the sale price is fixed or determinable, and collection is reasonably assured. 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, or charge backs from our payment processors who process payments from credit cards, debit cards, and PayPal, are recorded as a reduction to revenues. </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;">We generate revenues from our Chegg Services product line including our </font><font style="font-family:inherit;font-size:10pt;">Chegg Study service, our Chegg Writing service, our Chegg Tutors service, Test Prep, through our partnership with Kaplan, Internship services, Brand Partnership services that we offer to brands and Enrollment Marketing services to colleges, through our strategic partnership with NRCCUA.</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">Chegg Services are offered to students through weekly, monthly or annual subscriptions, and we recognize revenues ratably over the respective subscription period.</font><font style="font-family:inherit;font-size:10pt;"> </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-align:left;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Enrollment Marketing services and Brand Partnership services are offered either on a subscription or on an a la carte basis. Revenues are recognized ratably or as earned over the subscription service period, generally one year. Revenues from Enrollment Marketing services or Brand Partnership services delivered on an a la carte basis, without a subscription, are recognized when delivery of the respective lead or service has occurred. For these services, we bill the customer at the inception, over the term of the customer arrangement or as the services are performed. Upon satisfactory assessment of creditworthiness, we generally grant credit to our Enrollment Marketing and Brand Partnership customers with normal credit terms, typically 30 days. </font><font style="font-family:inherit;font-size:10pt;"> </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;">Some of our customer arrangements for Enrollment Marketing and Brand Partnership services include multiple deliverables, which include the delivery of student leads as well as other services to the end customer. We have determined these deliverables qualify as separate units of accounting, as they have value to the customer on a standalone basis and our arrangements do not contain a right of return. For these arrangements that contain multiple deliverables, we allocate the arrangement consideration based on the relative selling price method in accordance with the selling price hierarchy, which includes: (1) vendor-specific objective evidence of fair value (VSOE), when available; (2) third-party evidence of selling price (TPE), if VSOE does not exist; and (3) estimated selling price (ESP), if neither VSOE nor TPE is available.</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;">We determine VSOE based on our historical pricing and discounting practices for the specific solution when sold separately and when a substantial majority of the selling prices for these services fall within a narrow range. TPE is determined based on competitor prices for similar deliverables when sold separately. Generally, our go-to-market strategy differs from that of our peers, and our offerings contain a significant level of differentiation such that the comparable pricing of services with similar functionality cannot be obtained. If we have not established VSOE or TPE for our Enrollment Marketing services, we have used ESP in our allocation of arrangement consideration. Additionally, we limit the amount of revenues recognized for delivered elements to the amount that is not contingent on future delivery of services or other future performance obligations.<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;">Deferred revenue primarily consists of advanced payments from students related to rentals and subscriptions that have not been recognized, and marketing services that have yet to be performed. Deferred revenue is recognized as revenues ratably over the term or when the services are provided and all other revenue recognition criteria have been met.</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;">We historically generated revenues from the rental of print textbooks and to a lesser extent, through the sales of print textbooks through our website on a just-in-time basis. Rental revenues for textbooks that we owned were previously recognized ratably over the term of the rental period, generally two to five months. Commissions earned on rental textbooks owned by Ingram and other partners are recognized immediately when a book ships to the student.</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">We did not recognize any revenues from the rental or sale of our own print textbooks during the year ended December 31, 2017</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">reflecting our transition of print textbook rentals to Ingram and the increasing growth in our Chegg Services.</font><font style="font-family:inherit;font-size:10pt;"> Revenues from selling textbooks on a just-in-time basis were historically recognized upon shipment. </font><font style="font-family:inherit;font-size:10pt;">During the year ended December 31, 2017, revenues from selling textbooks on a just-in-time basis are commission based as a result of the transition to Ingram and other partners.</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">Revenues from the rental or sale of eTextbooks is recognized ratably over the contractual period, generally two to five months or at time of the sale, respectively</font><font style="font-family:inherit;font-size:10pt;">.</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;">We evaluate whether we are acting as a principal or an agent in a transaction, and therefore would record the gross sales amount and related costs as revenues or the net amount earned as commissions from the sale of third-party products. Our determination is based on our evaluation of certain indicators including whether we are the principal in the transaction, are subject to inventory risk, have latitude in establishing prices and selecting suppliers, none of which is presumptive or determinative. We generally operate as the principal and so in those instances revenues are recorded at the gross sale price. We generally record the net amounts as commissions earned when such amounts are determined using a fixed percentage of the transaction price, we are not subject to inventory risk or responsible for the fulfillment of the textbooks. We operate as an agent in our strategic partnership with Ingram and agreements with other partners and therefore </font><font style="font-family:inherit;font-size:10pt;">our revenues include a commission on the total transaction amount that we earn upon Ingram's fulfillment of a rental transaction using print textbooks for which Ingram or the other partner has title and risk of loss, as opposed to the total rental transaction amount. </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;">We also present our revenues separately for rental, services and sales. Rental revenues historically included the rental of print textbooks for which we take title and bear the risk of loss, service revenues includes Chegg Study, Chegg Writing, Chegg Tutors, Enrollment Marketing, Brand Partnership, eTextbooks, and commissions we earn from Ingram, other partners, and e-commerce partners; sales revenues includes just-in-time sale of print textbooks and the sale of other required materials. </font><font style="font-family:inherit;font-size:10pt;">As a result of our strategic partnership with Ingram and other partners, we no longer recognize rental revenues or sales revenues from the rental or sale of a print textbook. Instead, our services revenues includes a commission on the total transaction amount that we earn from Ingram and other partners upon Ingram's fulfillment of a rental transaction using books for which Ingram or other partner has title and risk of loss, as opposed to the total rental transaction amount. </font><font style="font-family:inherit;font-size:10pt;"> </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;">C</font></div></div>
CY2017	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, and the valuation of acquired intangible assets. 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>

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$CHGG
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2017 Q4 Form 10-K Financial Statement

#000136495418000039 Filed on February 26, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CHGG CHEGG, INC Stock $chgg

2017 Q4 Form 10-K Financial Statement

#000136495418000039 Filed on February 26, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CHGG
CHEGG, INC Stock $chgg