Income Taxes	3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company's Provision for Income Taxes was $7,821 and $4,938 for the three months ended March 31, 2019 and 2018, respectively. The effective tax rate was 9% and 4% for the three months ended March 31, 2019 and 2018, respectively. The effective tax rate reflects excess tax benefits from the delivery of Class A common stock under share-based payment arrangements of $12,161 and $21,864 being recognized in the Company's Provision for Income Taxes for the three months ended March 31, 2019 and 2018, respectively, and resulted in a reduction in the effective tax rate of 14 and 19 percentage points for the three months ended March 31, 2019 and 2018, respectively. The effective tax rate for the three months ended March 31, 2019 and 2018 also reflects the effect of certain nondeductible expenses, including expenses related to Class J, I-P and K-P LP Units, as well as the noncontrolling interest associated with LP Units and other adjustments. Additionally, the Company expects to recognize the income tax effects associated with the new global intangible low-taxed income ("GILTI") provisions in the period incurred. For three months ended March 31, 2019, no additional income tax expense associated with the GILTI provisions has been reported and it is not expected to be material to the Company’s effective tax rate for the year. The Company reported an increase in deferred tax assets of $185 associated with changes in Unrealized Gain (Loss) on Marketable Securities and a decrease of $890 associated with changes in Foreign Currency Translation Adjustment Gain (Loss), in Accumulated Other Comprehensive Income (Loss) for the three months ended March 31, 2019. The Company reported an increase in deferred tax assets of $166 associated with changes in Unrealized Gain (Loss) on Marketable Securities and a decrease of $1,095 associated with changes in Foreign Currency Translation Adjustment Gain (Loss), in Accumulated Other Comprehensive Income (Loss) for the three months ended March 31, 2018. As of March 31, 2019, the Company had no unrecognized tax benefits. The Company classifies interest relating to tax matters and tax penalties as a component of income tax expense in its Unaudited Condensed Consolidated Statements of Operations.

Income Taxes

The Company's Provision for Income Taxes was $7,821 and $4,938 for the three months ended March 31, 2019 and 2018, respectively. The effective tax rate was 9% and 4% for the three months ended March 31, 2019 and 2018, respectively. The effective tax rate reflects excess tax benefits from the delivery of Class A common stock under share-based payment arrangements of $12,161 and $21,864 being recognized in the Company's Provision for Income Taxes for the three months ended March 31, 2019 and 2018, respectively, and resulted in a reduction in the effective tax rate of 14 and 19 percentage points for the three months ended March 31, 2019 and 2018, respectively. The effective tax rate for the three months ended March 31, 2019 and 2018 also reflects the effect of certain nondeductible expenses, including expenses related to Class J, I-P and K-P LP Units, as well as the noncontrolling interest associated with LP Units and other adjustments.

Additionally, the Company expects to recognize the income tax effects associated with the new global intangible low-taxed income ("GILTI") provisions in the period incurred. For three months ended March 31, 2019, no additional income tax expense associated with the GILTI provisions has been reported and it is not expected to be material to the Company’s effective tax rate for the year.

The Company reported an increase in deferred tax assets of $185 associated with changes in Unrealized Gain (Loss) on Marketable Securities and a decrease of $890 associated with changes in Foreign Currency Translation Adjustment Gain (Loss), in Accumulated Other Comprehensive Income (Loss) for the three months ended March 31, 2019. The Company reported an increase in deferred tax assets of $166 associated with changes in Unrealized Gain (Loss) on Marketable Securities and a decrease of $1,095 associated with changes in Foreign Currency Translation Adjustment Gain (Loss), in Accumulated Other Comprehensive Income (Loss) for the three months ended March 31, 2018.

As of March 31, 2019, the Company had no unrecognized tax benefits.

The Company classifies interest relating to tax matters and tax penalties as a component of income tax expense in its Unaudited Condensed Consolidated Statements of Operations.