$CSGP
COSTAR GROUP, INC. Stock $csgp

$csgp Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-Q Financial Statement

#000105735217000075 Filed on October 26, 2017

Income Statement

Concept	2017 Q4	2017 Q3	2016 Q3
Revenue	$254.0M	$247.5M	$212.7M
YoY Change	16.34%	16.37%	12.5%
Cost Of Revenue	$58.30M	$55.48M	$42.22M
YoY Change	26.71%	31.41%	-21.42%
Gross Profit	$195.7M	$192.1M	$170.5M
YoY Change	13.58%	12.65%	25.96%
Gross Profit Margin	77.05%	77.59%	80.15%
Selling, General & Admin	$119.1M	$108.7M	$106.0M
YoY Change	18.63%	2.56%	-5.01%
% of Gross Profit	60.86%	56.6%	62.17%
Research & Development	$21.80M	$21.54M	$19.36M
YoY Change	9.55%	11.26%	13.54%
% of Gross Profit	11.14%	11.21%	11.35%
Depreciation & Amortization	$15.30M	$15.10M	$6.794M
YoY Change	-70.75%	122.25%	25.74%
% of Gross Profit	7.82%	7.86%	3.99%
Operating Expenses	$144.9M	$134.5M	$130.9M
YoY Change	15.57%	2.78%	-3.6%
Operating Profit	$50.76M	$57.51M	$39.60M
YoY Change	8.25%	45.25%	-9287.01%
Interest Expense	$734.0K	$2.901M	$2.498M
YoY Change	-71.26%	16.13%	5.71%
% of Operating Profit	1.45%	5.04%	6.31%
Other Income/Expense, Net	-$700.0K	-$2.200M	-$1.700M
YoY Change	-56.25%	29.41%	13.33%
Pretax Income	$48.69M	$55.17M	$37.44M
YoY Change	6.96%	47.34%	69.51%
Income Tax	$4.487M	$20.99M	$14.24M
% Of Pretax Income	9.22%	38.05%	38.03%
Net Earnings	$44.20M	$34.18M	$23.20M
YoY Change	49.47%	47.31%	-532.69%
Net Earnings / Revenue	17.4%	13.81%	10.91%
Basic Earnings Per Share	$1.24	$1.05	$0.72
Diluted Earnings Per Share	$1.22	$1.04	$0.72
COMMON SHARES
Basic Shares Outstanding	36.15M shares	32.44M shares	32.19M shares
Diluted Shares Outstanding		32.81M shares	32.44M shares

Balance Sheet

Concept	2017 Q4	2017 Q3	2016 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.212B	$623.0M	$523.3M
YoY Change	113.59%	19.05%	39.36%
Cash & Equivalents	$1.211B	$623.0M	$522.1M
Short-Term Investments			$1.200M
Other Short-Term Assets	$15.60M	$16.20M	$11.70M
YoY Change	34.48%	38.46%	-76.07%
Inventory
Prepaid Expenses
Receivables	$60.90M	$60.87M	$47.46M
Other Receivables	$0.00	$0.00	$1.000M
Total Short-Term Assets	$1.288B	$700.1M	$583.4M
YoY Change	105.25%	19.99%	22.45%
LONG-TERM ASSETS
Property, Plant & Equipment	$84.50M	$84.33M	$85.37M
YoY Change	-3.51%	-1.22%	-2.58%
Goodwill	$1.283B	$1.283B	$1.256B
YoY Change	2.28%	2.14%	0.51%
Intangibles	$182.9M	$191.2M	$207.1M
YoY Change	-6.67%	-7.69%	-17.42%
Long-Term Investments	$10.10M	$10.00M	$9.900M
YoY Change	1.0%	1.01%	-36.13%
Other Assets	$11.60M	$11.90M	$10.40M
YoY Change	26.09%	14.42%	0.0%
Total Long-Term Assets	$1.586B	$1.581B	$1.569B
YoY Change	1.79%	0.72%	-2.79%
TOTAL ASSETS
Total Short-Term Assets	$1.288B	$700.1M	$583.4M
Total Long-Term Assets	$1.586B	$1.581B	$1.569B
Total Assets	$2.873B	$2.281B	$2.153B
YoY Change	31.5%	5.95%	2.96%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$9.262M	$11.32M	$9.861M
YoY Change	-19.31%	14.83%	-30.61%
Accrued Expenses	$22.19M	$33.07M	$33.25M
YoY Change	-28.62%	-0.54%	-15.33%
Deferred Revenue	$45.69M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$36.91M	$21.83M
YoY Change	-100.0%	69.12%	9.13%
Total Short-Term Liabilities	$146.7M	$176.6M	$153.5M
YoY Change	-5.34%	15.07%	-5.81%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$268.6M	$315.7M
YoY Change	-100.0%	-14.92%	-9.8%
Other Long-Term Liabilities	$63.50M	$50.90M	$55.60M
YoY Change	24.51%	-8.45%	-1.77%
Total Long-Term Liabilities	$0.00	$268.6M	$315.7M
YoY Change	-100.0%	-14.92%	-9.8%
TOTAL LIABILITIES
Total Short-Term Liabilities	$146.7M	$176.6M	$153.5M
Total Long-Term Liabilities	$0.00	$268.6M	$315.7M
Total Liabilities	$222.2M	$518.2M	$533.9M
YoY Change	-58.14%	-2.94%	-8.07%
SHAREHOLDERS EQUITY
Retained Earnings	$320.7M
YoY Change	63.77%
Common Stock	$361.0K
YoY Change	10.74%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.651B	$1.762B	$1.619B
YoY Change
Total Liabilities & Shareholders Equity	$2.873B	$2.281B	$2.153B
YoY Change	31.5%	5.95%	2.96%

Cashflow Statement

Concept	2017 Q4	2017 Q3	2016 Q3
OPERATING ACTIVITIES
Net Income	$44.20M	$34.18M	$23.20M
YoY Change	49.47%	47.31%	-532.69%
Depreciation, Depletion And Amortization	$15.30M	$15.10M	$6.794M
YoY Change	-70.75%	122.25%	25.74%
Cash From Operating Activities	$71.40M	$67.90M	$57.00M
YoY Change	25.48%	19.12%	33.49%
INVESTING ACTIVITIES
Capital Expenditures	-$4.700M	-$7.100M	-$4.300M
YoY Change	-33.8%	65.12%	-57.43%
Acquisitions
YoY Change
Other Investing Activities	$0.00	-$2.700M	$400.0K
YoY Change	-100.0%	-775.0%	-109.3%
Cash From Investing Activities	-$4.800M	-$9.800M	-$3.900M
YoY Change	-18.64%	151.28%	-72.73%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$834.0M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	521.3M	-100.0K	5.000M
YoY Change	-9578.18%	-102.0%	-213.64%
NET CHANGE
Cash From Operating Activities	71.40M	67.90M	57.00M
Cash From Investing Activities	-4.800M	-9.800M	-3.900M
Cash From Financing Activities	521.3M	-100.0K	5.000M
Net Change In Cash	587.9M	58.00M	58.10M
YoY Change	1192.09%	-0.17%	142.08%
FREE CASH FLOW
Cash From Operating Activities	$71.40M	$67.90M	$57.00M
Capital Expenditures	-$4.700M	-$7.100M	-$4.300M
Free Cash Flow	$76.10M	$75.00M	$61.30M
YoY Change	18.91%	22.35%	16.1%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2014Q2	csgp	Libor Maturity Period LiborMaturityPeriod	P1M
CY2014Q2	csgp	Maximum Total Leverage Ratio After Eight Fiscal Quarters MaximumTotalLeverageRatioAfterEightFiscalQuarters	4.50
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	COSTAR GROUP INC
CY2014Q2	csgp	Default Interest Rate Spread Per Annum DefaultInterestRateSpreadPerAnnum	0.02
CY2016Q4	csgp	Deferredgainonthesaleofbuildingcurrent Deferredgainonthesaleofbuildingcurrent	2523000	USD
CY2017Q3	csgp	Deferredgainonthesaleofbuildingcurrent Deferredgainonthesaleofbuildingcurrent	2523000	USD
CY2014Q2	csgp	Maximumfirstliensecuredleverageratioaftereightquartersafterclosingdate Maximumfirstliensecuredleverageratioaftereightquartersafterclosingdate	3.50
CY2016Q3	csgp	Netincomelossbeforeinterestandotherincomeexpenseincometaxesdepreciationandamortization Ebitda NetincomelossbeforeinterestandotherincomeexpenseincometaxesdepreciationandamortizationEBITDA	57676000	USD
	csgp	Netincomelossbeforeinterestandotherincomeexpenseincometaxesdepreciationandamortization Ebitda NetincomelossbeforeinterestandotherincomeexpenseincometaxesdepreciationandamortizationEBITDA	151057000	USD
CY2017Q3	csgp	Netincomelossbeforeinterestandotherincomeexpenseincometaxesdepreciationandamortization Ebitda NetincomelossbeforeinterestandotherincomeexpenseincometaxesdepreciationandamortizationEBITDA	72632000	USD
	csgp	Netincomelossbeforeinterestandotherincomeexpenseincometaxesdepreciationandamortization Ebitda NetincomelossbeforeinterestandotherincomeexpenseincometaxesdepreciationandamortizationEBITDA	171335000	USD
	csgp	Proceeds From Exercise Of Stock Options And Espp ProceedsFromExerciseOfStockOptionsAndEspp	4791000	USD
	csgp	Proceeds From Exercise Of Stock Options And Espp ProceedsFromExerciseOfStockOptionsAndEspp	9058000	USD
	csgp	Subscription Based Licensing Agreement Minimum Term Years SubscriptionBasedLicensingAgreementMinimumTermYears	P1Y
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
	dei	Document Period End Date DocumentPeriodEndDate	2017-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0001057352
CY2017Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	36145490	shares
CY2016Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	11478000	USD
CY2017Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	11323000	USD
CY2016Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	48537000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2157000	USD
	us-gaap	Interest Paid InterestPaid	5000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	24078	shares
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3992000	USD
CY2017Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	60871000	USD
CY2016Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	3814000	USD
CY2017Q3	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	9328000	USD
CY2016Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	741000	USD
CY2017Q3	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	3982000	USD
CY2016Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	31092000	USD
CY2017Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	33073000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-848000	USD
CY2017Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-848000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-12191000	USD
CY2017Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-8759000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-13039000	USD
CY2017Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-9607000	USD
CY2016Q3	us-gaap	Advertising Expense AdvertisingExpense	27000000	USD
	us-gaap	Advertising Expense AdvertisingExpense	95000000	USD
CY2017Q3	us-gaap	Advertising Expense AdvertisingExpense	25000000	USD
	us-gaap	Advertising Expense AdvertisingExpense	87000000	USD
CY2016Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9311000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26981000	USD
CY2017Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9743000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	29203000	USD
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	6344000	USD
CY2017Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	6370000	USD
CY2016Q3	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	797000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2000000	USD
CY2017Q3	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	670000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2000000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2407000	USD
CY2016Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5550000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	17602000	USD
CY2017Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4298000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	13642000	USD
CY2016Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	73000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	73000	shares
CY2017Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	86000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	86000	shares
CY2016Q4	us-gaap	Assets Assets	2185063000	USD
CY2017Q3	us-gaap	Assets Assets	2280596000	USD
CY2016Q4	us-gaap	Assets Current AssetsCurrent	627491000	USD
CY2017Q3	us-gaap	Assets Current AssetsCurrent	700081000	USD
CY2016Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	9952000	USD
CY2017Q3	us-gaap	Available For Sale Securities AvailableForSaleSecurities	9952000	USD
CY2016Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	0	USD
CY2017Q3	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	0	USD
CY2016Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	848000	USD
CY2017Q3	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	848000	USD
CY2016Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	10800000	USD
CY2017Q3	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	10800000	USD
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	848000	USD
CY2017Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	848000	USD
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	USD
CY2017Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	USD
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	9952000	USD
CY2017Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	9952000	USD
CY2017Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	0	USD
CY2017Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	0	USD
CY2017Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	9952000	USD
CY2017Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	0	USD
CY2016Q3	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	0	USD
	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	0	USD
CY2017Q3	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	0	USD
	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	0	USD
CY2016Q3	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	0	USD
	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	0	USD
CY2017Q3	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	0	USD
	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	0	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	421818000	USD
CY2016Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	522099000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	567223000	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	622995000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	100281000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	55772000	USD
CY2016Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	22651000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	52719000	USD
CY2017Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	35367000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	81923000	USD
CY2016Q3	us-gaap	Cost Of Goods Sold Amortization CostOfGoodsSoldAmortization	5736000	USD
	us-gaap	Cost Of Goods Sold Amortization CostOfGoodsSoldAmortization	17119000	USD
CY2017Q3	us-gaap	Cost Of Goods Sold Amortization CostOfGoodsSoldAmortization	4200000	USD
	us-gaap	Cost Of Goods Sold Amortization CostOfGoodsSoldAmortization	15089000	USD
CY2016Q3	us-gaap	Cost Of Revenue CostOfRevenue	42222000	USD
	us-gaap	Cost Of Revenue CostOfRevenue	127801000	USD
CY2017Q3	us-gaap	Cost Of Revenue CostOfRevenue	55483000	USD
	us-gaap	Cost Of Revenue CostOfRevenue	162102000	USD
CY2016Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	345000000	USD
CY2017Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	310000000	USD
CY2017Q1	us-gaap	Debt Instrument Periodic Payment Principal DebtInstrumentPeriodicPaymentPrincipal	30000000	USD
CY2016Q4	us-gaap	Deferred Finance Costs Current Net DeferredFinanceCostsCurrentNet	3134000	USD
CY2017Q3	us-gaap	Deferred Finance Costs Current Net DeferredFinanceCostsCurrentNet	3090000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.73
CY2014Q2	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	10000000	USD
CY2016Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	7000000	USD
CY2016Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	6661000	USD
CY2017Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	4504000	USD
CY2017Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	5000000	USD
CY2016Q4	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	18715000	USD
CY2017Q3	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	16823000	USD
CY2016Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	7273000	USD
CY2017Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	6477000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5554000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6087000	USD
CY2016Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	18386000	USD
CY2017Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	22101000	USD
CY2016Q4	us-gaap	Deferred Rent Credit Current DeferredRentCreditCurrent	1206000	USD
CY2017Q3	us-gaap	Deferred Rent Credit Current DeferredRentCreditCurrent	3201000	USD
CY2016Q4	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	31589000	USD
CY2017Q3	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	30090000	USD
CY2016Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	39164000	USD
CY2017Q3	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	45568000	USD
CY2016Q4	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	1948000	USD
CY2017Q3	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	5392000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	53041000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	48277000	USD
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.72
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.05
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.42
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.72
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.71
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.04
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.40
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-962000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	880000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.39
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.33
CY2016Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	33803000	USD
CY2017Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	34661000	USD
CY2016Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	46000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	275000	USD
CY2017Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2016Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	4700000	USD
CY2017Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	0	USD
CY2015Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	15507000	USD
CY2016Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	11036000	USD
CY2016Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	11082000	USD
CY2016Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	9952000	USD
CY2017Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	9952000	USD
CY2017Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	9952000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	195965000	USD
CY2017Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	191178000	USD
CY2016Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	0	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	0	USD
CY2017Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	0	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	0	USD
CY2016Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	30572000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	88275000	USD
CY2017Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	35998000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	104550000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	1252945000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	1254866000	USD
CY2017Q3	us-gaap	Goodwill Goodwill	1283190000	USD
CY2016	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	6400000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	25717000	USD
CY2016	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-4479000	USD
	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	2607000	USD
CY2016Q3	us-gaap	Gross Profit GrossProfit	170489000	USD
	us-gaap	Gross Profit GrossProfit	491518000	USD
CY2017Q3	us-gaap	Gross Profit GrossProfit	192050000	USD
	us-gaap	Gross Profit GrossProfit	549137000	USD
CY2016Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	37442000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	91141000	USD
CY2017Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	55167000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	116367000	USD
CY2016Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14241000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35643000	USD
CY2017Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20990000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37876000	USD
CY2016Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	129000	USD
CY2017Q3	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	0	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	12864000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	11888000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	13808000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	15809000	USD
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	386000	USD
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	5969000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	473000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-3387000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1398000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3561000	USD
CY2016Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	254000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	271000	shares
CY2017Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	370000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	330000	shares
CY2016Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	195965000	USD
CY2017Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	191178000	USD
CY2016Q3	us-gaap	Interest Expense InterestExpense	2498000	USD
	us-gaap	Interest Expense InterestExpense	7462000	USD
CY2017Q3	us-gaap	Interest Expense InterestExpense	2901000	USD
	us-gaap	Interest Expense InterestExpense	8280000	USD
CY2016Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	2000000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	7000000	USD
CY2017Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	3000000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	8000000	USD
CY2016Q3	us-gaap	Interest Paid InterestPaid	2000000	USD
CY2016Q3	us-gaap	Interest Paid InterestPaid	2000000	USD
	us-gaap	Interest Paid InterestPaid	5000000	USD
	us-gaap	Interest Paid InterestPaid	5000000	USD
CY2017Q3	us-gaap	Interest Paid InterestPaid	2000000	USD
CY2016Q4	us-gaap	Liabilities Liabilities	530850000	USD
CY2017Q3	us-gaap	Liabilities Liabilities	518169000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2185063000	USD
CY2017Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2280596000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	154946000	USD
CY2017Q3	us-gaap	Liabilities Current LiabilitiesCurrent	176587000	USD
	us-gaap	Line Of Credit Facility Collateral LineOfCreditFacilityCollateral	The obligations under the 2014 Credit Agreement are guaranteed by all material subsidiaries of the Company and are secured by a lien on substantially all of the assets of the Company and those of its material subsidiaries, in each case subject to certain exceptions, pursuant to security and guarantee documents entered into on the Closing Date.
CY2016Q4	us-gaap	Long Term Debt LongTermDebt	338339000	USD
CY2017Q3	us-gaap	Long Term Debt LongTermDebt	305496000	USD
CY2016Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	31866000	USD
CY2017Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	36910000	USD
CY2016Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	306473000	USD
CY2017Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	268586000	USD
CY2016Q4	us-gaap	Long Term Investments LongTermInvestments	9952000	USD
CY2017Q3	us-gaap	Long Term Investments LongTermInvestments	9952000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-29782000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-40894000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-17435000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-67521000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	148460000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	163307000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	23201000	USD
	us-gaap	Net Income Loss NetIncomeLoss	55498000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	34177000	USD
	us-gaap	Net Income Loss NetIncomeLoss	78491000	USD
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	operating_segments
CY2016Q3	us-gaap	Operating Expenses OperatingExpenses	130893000	USD
	us-gaap	Operating Expenses OperatingExpenses	393502000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
CY2017Q3	us-gaap	Operating Expenses OperatingExpenses	134537000	USD
	us-gaap	Operating Expenses OperatingExpenses	426079000	USD
CY2016Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	39596000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	98016000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	57513000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	123058000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-596000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-3054000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1190000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	3432000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-550000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2779000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1190000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3432000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
CY2016Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	46000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	275000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2016Q3	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	6794000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	18320000	USD
CY2017Q3	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	6621000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	19546000	USD
CY2016Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	35000000	USD
CY2017Q3	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	40000000	USD
CY2016Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	344000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	587000	USD
CY2017Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	555000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1589000	USD
	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	0	USD
	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	643000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	14573000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	14309000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	10443000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	47767000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	11692000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	19754000	USD
CY2016Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	11602000	USD
CY2017Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	16215000	USD
	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	4700000	USD
	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	0	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	87568000	USD
CY2017Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	84326000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	6462000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	20000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	35000000	USD
CY2016Q3	us-gaap	Research And Development Expense Software Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseSoftwareExcludingAcquiredInProcessCost	19357000	USD
	us-gaap	Research And Development Expense Software Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseSoftwareExcludingAcquiredInProcessCost	56539000	USD
CY2017Q3	us-gaap	Research And Development Expense Software Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseSoftwareExcludingAcquiredInProcessCost	21536000	USD
	us-gaap	Research And Development Expense Software Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseSoftwareExcludingAcquiredInProcessCost	67054000	USD
CY2016Q3	us-gaap	Revenues Revenues	212711000	USD
	us-gaap	Revenues Revenues	619319000	USD
CY2017Q3	us-gaap	Revenues Revenues	247533000	USD
	us-gaap	Revenues Revenues	711239000	USD
CY2016Q3	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	75414000	USD
	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	231086000	USD
CY2017Q3	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	72705000	USD
	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	240833000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	26981000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	29203000	USD
CY2016Q3	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	3367	shares
CY2017Q3	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	3532	shares
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	81815	shares
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	1654213000	USD
CY2017Q3	us-gaap	Stockholders Equity StockholdersEquity	1762427000	USD
CY2016Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32440000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32423000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32814000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32705000	shares
CY2016Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32186000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32152000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32444000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32375000	shares
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Concentration of Credit Risk and Financial Instruments</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:justify;text-indent:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company maintains reserves for estimated inherent credit losses, and such losses have been within management’s expectations. The large size and widespread nature of the Company’s customer base and the Company’s lack of dependence on any individual customer mitigates the risk of nonpayment of the Company’s accounts receivable. The carrying amount of the accounts receivable approximates the net realizable value. The carrying value of the accounts receivable, accounts payable, accrued expenses and long-term debt approximates fair value.</font></div><div style="line-height:120%;text-align:justify;text-indent:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;text-indent:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company holds cash at major financial institutions in amounts that often exceed Federal Deposit Insurance Corporation insured limits. The Company manages its credit risk associated with cash concentrations by concentrating its cash deposits in high quality financial institutions and by periodically evaluating the credit quality of the primary financial institutions holding such deposits. The carrying value of cash approximates fair value. Historically, the Company has not experienced any losses due to such cash concentrations. </font></div></div>
	us-gaap	Nature Of Operations NatureOfOperations	<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-weight:bold;">ORGANIZATION</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:justify;text-indent:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">CoStar Group, Inc. (the “Company” or “CoStar”) provides information, analytics and online marketplace services to the commercial real estate and related business community through its comprehensive, proprietary database of commercial real estate information covering the United States (“U.S.”), the United Kingdom (“U.K.”), and parts of Canada, Spain, Germany and France. The Company provides online marketplaces for commercial real estate, apartment rentals, lands for sale and businesses for sale. The Company operates within </font><font style="font-family:inherit;font-size:10pt;">two</font><font style="font-family:inherit;font-size:10pt;"> operating segments, North America and International, and its services are typically distributed to its clients under subscription-based license agreements that renew automatically, a majority of which have a term of </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">one year</font><font style="font-family:inherit;font-size:10pt;">.</font></div></div>
	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;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:justify;text-indent:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. On an ongoing basis, the Company evaluates its estimates and assumptions, including those related to revenue recognition, allowance for doubtful accounts, credit reserves, useful lives of property and equipment and intangible assets, recoverability of long-lived assets and intangible assets with definite lives, goodwill, income taxes, fair value of equity instruments, fair value of auction rate securities ("ARS"), accounting for business combinations and contingencies, among others. The Company bases these estimates on historical and anticipated results, trends, and various other assumptions that it believes are reasonable, including assumptions as to future events. These estimates form the basis for making judgments about the carrying values of assets and liabilities and recorded revenues and expenses. Actual results could differ from these estimates.</font></div></div>

Files In Submission

Name	View Source	Status
0001057352-17-000075-index-headers.html	Edgar Link	pending
0001057352-17-000075-index.html	Edgar Link	pending
0001057352-17-000075.txt	Edgar Link	pending
0001057352-17-000075-xbrl.zip	Edgar Link	pending
csgp-20170930.xml	Edgar Link	completed
csgp-20170930.xsd	Edgar Link	pending
csgp-20170930_cal.xml	Edgar Link	unprocessable
csgp-20170930_def.xml	Edgar Link	unprocessable
csgp-20170930_lab.xml	Edgar Link	unprocessable
csgp-20170930_pre.xml	Edgar Link	unprocessable
csgp-9302017x10q.htm	Edgar Link	pending
csgp-9302017xex311.htm	Edgar Link	pending
csgp-9302017xex312.htm	Edgar Link	pending
csgp-9302017xex321.htm	Edgar Link	pending
csgp-9302017xex322.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
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$CSGP
COSTAR GROUP, INC. Stock $csgp

2017 Q4 Form 10-Q Financial Statement

#000105735217000075 Filed on October 26, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CSGP COSTAR GROUP, INC. Stock $csgp

2017 Q4 Form 10-Q Financial Statement

#000105735217000075 Filed on October 26, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CSGP
COSTAR GROUP, INC. Stock $csgp