Summary of Significant Accounting Policies (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Sep. 30, 2019 employee	Mar. 31, 2020 USD ($)
Summary Of Accounting Policies [Line Items]
Number of employees to be terminated | employee	86
Maximum
Cash, Cash Equivalents and Restricted Cash
Probability of success of achieving regulatory and sales milestones		15.00%
Minimum
Cash, Cash Equivalents and Restricted Cash
Probability of success of achieving regulatory and sales milestones		4.00%
EPI Health, LLC
Cash, Cash Equivalents and Restricted Cash
Cash deposited in escrow | $		$ 1,750