Convertible Notes and Term Loan - Components of Term Loan (Details) - Term Loan - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Principal amount of the Term Loan	$ 75,000	$ 75,000
Unamortized debt discount and debt issuance costs	(941)	(1,337)
Net carrying amount	$ 74,059	$ 73,663

Face (par) amount of debt instrument at time of issuance.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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