Stock-Based Compensation - Summary Of Changes In CSEs Outstanding (Details) - Common stock equivalents	6 Months Ended
	Jun. 30, 2019 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Right to receive, shares	1
Base fee percentage (up to)	50.00%
Common Stock Equivalents (CSEs) [Roll Forward]
Outstanding beginning balance (in shares)	109,780
Granted (in shares)	2,179
Converted to common shares upon grant (in shares)	(1,544)
Outstanding ending balance (in shares)	110,415
Per Share Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding beginning balance (in dollars per share) | $ / shares	$ 24.96
Granted (in dollars per share) | $ / shares	159.20
Converted to common shares upon grant (in dollars per share) | $ / shares	138.90
Outstanding ending balance (in dollars per share) | $ / shares	$ 26.02