Debt (Tables)

3 Months Ended

Mar. 31, 2019

Debt

Schedule of long-term debt

	As of		As of
	December 31		March 31
(in thousands)	2018		2019
Term loan payable	$	25,000	$	25,000
End of term fee		—		109
Unamortized debt issuance costs		(1,990)		(1,871)
Carrying value of term loan		23,010		23,238
Other long-term debt		708		707
Total long-term debt	$	23,718	$	23,945

Schedule of maturities of long-term debt

Maturities of long-term debt as of March 31, 2019 were as follows:

(in thousands)
2019	$	—
2020		3,656
2021		8,592
2022		8,704
2023		4,756