Related Party Transactions	9 Months Ended
Sep. 30, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party TransactionsIn September 2018, certain third-party investment funds purchased 8,909,092 shares of common stock from certain of the Company’s founders for a total purchase price of $98.0 million. Since the purchasing investment funds are entities affiliated with holders of economic interests in the Company and the funds acquired shares from the founders at a price in excess of the fair value of such shares, the amount paid in excess of the fair value of the shares at the time of the purchase was recorded as stock-based compensation expense. The Company recorded $23.3 million of stock-based compensation expense to general and administrative expense in the condensed consolidated statement of operations during the three and nine months ended September 30, 2018 related to the purchases. There were no such transactions in the three and nine months ended September 30, 2019.

Related Party Transactions

9 Months Ended

Sep. 30, 2019

Related Party TransactionsIn September 2018, certain third-party investment funds purchased 8,909,092 shares of common stock from certain of the Company’s founders for a total purchase price of $98.0 million. Since the purchasing investment funds are entities affiliated with holders of economic interests in the Company and the funds acquired shares from the founders at a price in excess of the fair value of such shares, the amount paid in excess of the fair value of the shares at the time of the purchase was recorded as stock-based compensation expense. The Company recorded $23.3 million of stock-based compensation expense to general and administrative expense in the condensed consolidated statement of operations during the three and nine months ended September 30, 2018 related to the purchases. There were no such transactions in the three and nine months ended September 30, 2019.