v3.10.0.1

Convertible Notes - Debt issuance costs and interest expense (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Oct. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Convertible Notes
Debt issuance costs incurred		$ 695	$ 0	$ 124
Convertible Notes
Convertible Notes
Debt issuance costs incurred	$ 6,169
Additional paid-in capital	1,442
Amortizaton of remaining financing costs	$ 4,727
Interest expense related to the Convertible Notes
Contractual interest expense		2,677
Amortization of debt issuance costs		205
Amortization of debt discount		1,992
Total		$ 4,874
Effective interest rate of the liability component		7.10%
Amortization and interest expense capitalized		$ 508
Convertible Notes | interest and other expense, net
Interest expense related to the Convertible Notes
Amortization of debt issuance costs		$ 205

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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